/************************************************************************** * * Copyright 2009 VMware, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ /** * @file * Texture sampling -- SoA. * * @author Jose Fonseca * @author Brian Paul */ #include "pipe/p_defines.h" #include "pipe/p_state.h" #include "pipe/p_shader_tokens.h" #include "util/bitset.h" #include "util/compiler.h" #include "util/u_debug.h" #include "util/u_dump.h" #include "util/u_memory.h" #include "util/u_math.h" #include "util/format/u_format.h" #include "util/u_cpu_detect.h" #include "util/format_rgb9e5.h" #include "lp_bld_debug.h" #include "lp_bld_type.h" #include "lp_bld_const.h" #include "lp_bld_conv.h" #include "lp_bld_arit.h" #include "lp_bld_bitarit.h" #include "lp_bld_logic.h" #include "lp_bld_printf.h" #include "lp_bld_swizzle.h" #include "lp_bld_flow.h" #include "lp_bld_gather.h" #include "lp_bld_format.h" #include "lp_bld_sample.h" #include "lp_bld_sample_aos.h" #include "lp_bld_struct.h" #include "lp_bld_quad.h" #include "lp_bld_pack.h" #include "lp_bld_intr.h" #include "lp_bld_misc.h" #include "lp_bld_jit_types.h" static void lp_build_gather_resident(struct lp_build_context *bld, struct lp_sampler_dynamic_state *dynamic_state, LLVMTypeRef resources_type, LLVMValueRef resources_ptr, LLVMValueRef offset, LLVMValueRef *out_resident) { struct lp_type type = lp_int_type(bld->type); struct gallivm_state *gallivm = bld->gallivm; LLVMBuilderRef builder = gallivm->builder; static_assert(sizeof(BITSET_WORD) == 4, "Unexpected BITSET_WORD size"); LLVMValueRef residency = dynamic_state->residency(gallivm, resources_type, resources_ptr, 0, NULL); LLVMValueRef tile_size_log2 = lp_build_const_int_vec(gallivm, type, util_logbase2(64 * 1024)); LLVMValueRef tile_index = LLVMBuildLShr(builder, offset, tile_size_log2, ""); LLVMValueRef dword_bitsize_log2 = lp_build_const_int_vec(gallivm, type, util_logbase2(32)); LLVMValueRef dword_index = LLVMBuildLShr(builder, tile_index, dword_bitsize_log2, ""); LLVMValueRef dword_size_log2 = lp_build_const_int_vec(gallivm, type, util_logbase2(4)); LLVMValueRef dword_offset = LLVMBuildShl(builder, dword_index, dword_size_log2, ""); residency = lp_build_gather(gallivm, type.length, type.width, lp_elem_type(type), true, residency, dword_offset, true); LLVMValueRef dword_bit_mask = lp_build_const_int_vec(gallivm, type, 31); LLVMValueRef bit_index = LLVMBuildAnd(builder, tile_index, dword_bit_mask, ""); LLVMValueRef bit_mask = LLVMBuildShl(builder, lp_build_one(gallivm, type), bit_index, ""); LLVMValueRef resident = LLVMBuildAnd(builder, residency, bit_mask, ""); resident = LLVMBuildICmp(builder, LLVMIntNE, resident, lp_build_zero(gallivm, type), ""); if (*out_resident) *out_resident = LLVMBuildAnd(builder, *out_resident, resident, ""); else *out_resident = resident; } /** * Generate code to fetch a texel from a texture at int coords (x, y, z). * The computation depends on whether the texture is 1D, 2D or 3D. * The result, texel, will be float vectors: * texel[0] = red values * texel[1] = green values * texel[2] = blue values * texel[3] = alpha values */ static void lp_build_sample_texel_soa(struct lp_build_sample_context *bld, LLVMValueRef width, LLVMValueRef height, LLVMValueRef depth, LLVMValueRef x, LLVMValueRef y, LLVMValueRef z, LLVMValueRef y_stride, LLVMValueRef z_stride, LLVMValueRef data_ptr, LLVMValueRef mipoffsets, LLVMValueRef ilevel, LLVMValueRef texel_out[4]) { const struct lp_static_sampler_state *static_state = bld->static_sampler_state; const unsigned dims = bld->dims; struct lp_build_context *int_coord_bld = &bld->int_coord_bld; LLVMBuilderRef builder = bld->gallivm->builder; LLVMValueRef offset; LLVMValueRef i, j; LLVMValueRef use_border = NULL; /* use_border = x < 0 || x >= width || y < 0 || y >= height */ if (lp_sampler_wrap_mode_uses_border_color(static_state->wrap_s, static_state->min_img_filter, static_state->mag_img_filter)) { LLVMValueRef b1, b2; b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero); b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width); use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); } if (dims >= 2 && lp_sampler_wrap_mode_uses_border_color(static_state->wrap_t, static_state->min_img_filter, static_state->mag_img_filter)) { LLVMValueRef b1, b2; b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero); b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height); if (use_border) { use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1"); use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2"); } else { use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); } } if (dims == 3 && lp_sampler_wrap_mode_uses_border_color(static_state->wrap_r, static_state->min_img_filter, static_state->mag_img_filter)) { LLVMValueRef b1, b2; b1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero); b2 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth); if (use_border) { use_border = LLVMBuildOr(builder, use_border, b1, "ub_or_b1"); use_border = LLVMBuildOr(builder, use_border, b2, "ub_or_b2"); } else { use_border = LLVMBuildOr(builder, b1, b2, "b1_or_b2"); } } /* convert x,y,z coords to linear offset from start of texture, in bytes */ if (bld->static_texture_state->tiled) { lp_build_tiled_sample_offset(&bld->int_coord_bld, bld->format_desc->format, bld->static_texture_state, x, y, z, width, height, z_stride, &offset, &i, &j); } else { lp_build_sample_offset(&bld->int_coord_bld, bld->format_desc, x, y, z, y_stride, z_stride, &offset, &i, &j); } if (mipoffsets) { offset = lp_build_add(&bld->int_coord_bld, offset, mipoffsets); } if (use_border) { /* If we can sample the border color, it means that texcoords may * lie outside the bounds of the texture image. We need to do * something to prevent reading out of bounds and causing a segfault. * * Simply AND the texture coords with !use_border. This will cause * coords which are out of bounds to become zero. Zero's guaranteed * to be inside the texture image. */ offset = lp_build_andnot(&bld->int_coord_bld, offset, use_border); } if (bld->residency) { LLVMValueRef real_offset = offset; if (!mipoffsets) { mipoffsets = lp_build_get_mip_offsets(bld, ilevel); real_offset = lp_build_add(&bld->int_coord_bld, real_offset, mipoffsets); if (use_border) real_offset = lp_build_andnot(&bld->int_coord_bld, real_offset, use_border); } lp_build_gather_resident(&bld->float_vec_bld, bld->dynamic_state, bld->resources_type, bld->resources_ptr, real_offset, &bld->resident); } lp_build_fetch_rgba_soa(bld->gallivm, bld->format_desc, bld->texel_type, true, data_ptr, offset, i, j, bld->cache, texel_out); /* * Note: if we find an app which frequently samples the texture border * we might want to implement a true conditional here to avoid sampling * the texture whenever possible (since that's quite a bit of code). * Ex: * if (use_border) { * texel = border_color; * } else { * texel = sample_texture(coord); * } * As it is now, we always sample the texture, then selectively replace * the texel color results with the border color. */ if (use_border) { /* select texel color or border color depending on use_border. */ const struct util_format_description *format_desc = bld->format_desc; struct lp_type border_type = bld->texel_type; border_type.length = 4; /* * Only replace channels which are actually present. The others should * get optimized away eventually by sampler_view swizzle anyway but it's * easier too. */ for (unsigned chan = 0; chan < 4; chan++) { unsigned chan_s; /* reverse-map channel... */ if (util_format_has_stencil(format_desc)) { if (chan == 0) chan_s = 0; else break; } else { for (chan_s = 0; chan_s < 4; chan_s++) { if (chan_s == format_desc->swizzle[chan]) { break; } } } if (chan_s <= 3) { /* use the already clamped color */ LLVMValueRef idx = lp_build_const_int32(bld->gallivm, chan); LLVMValueRef border_chan; border_chan = lp_build_extract_broadcast(bld->gallivm, border_type, bld->texel_type, bld->border_color_clamped, idx); texel_out[chan] = lp_build_select(&bld->texel_bld, use_border, border_chan, texel_out[chan]); } } } } static LLVMValueRef get_first_level(struct gallivm_state *gallivm, LLVMTypeRef resources_type, LLVMValueRef resources_ptr, unsigned texture_unit, LLVMValueRef texture_unit_offset, const struct lp_static_texture_state *static_state, struct lp_sampler_dynamic_state *dynamic_state) { if (static_state->level_zero_only) return lp_build_const_int32(gallivm, 0); else { LLVMValueRef first_level; first_level = dynamic_state->first_level(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset); first_level = LLVMBuildZExt(gallivm->builder, first_level, LLVMInt32TypeInContext(gallivm->context), ""); return first_level; } } static LLVMValueRef get_last_level(struct gallivm_state *gallivm, LLVMTypeRef resources_type, LLVMValueRef resources_ptr, unsigned texture_unit, LLVMValueRef texture_unit_offset, const struct lp_static_texture_state *static_state, struct lp_sampler_dynamic_state *dynamic_state) { if (static_state->level_zero_only) return lp_build_const_int32(gallivm, 0); else { LLVMValueRef last_level; last_level = dynamic_state->last_level(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset); last_level = LLVMBuildZExt(gallivm->builder, last_level, LLVMInt32TypeInContext(gallivm->context), ""); return last_level; } } /** * Helper to compute the mirror function for the PIPE_WRAP_MIRROR_REPEAT mode. * (Note that with pot sizes could do this much more easily post-scale * with some bit arithmetic.) */ static LLVMValueRef lp_build_coord_mirror(struct lp_build_sample_context *bld, LLVMValueRef coord, bool posOnly) { struct lp_build_context *coord_bld = &bld->coord_bld; LLVMValueRef fract; LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5); /* * We can just use 2*(x - round(0.5*x)) to do all the mirroring, * it all works out. (The result is in range [-1, 1.0], negative if * the coord is in the "odd" section, otherwise positive.) */ coord = lp_build_mul(coord_bld, coord, half); fract = lp_build_round(coord_bld, coord); fract = lp_build_sub(coord_bld, coord, fract); coord = lp_build_add(coord_bld, fract, fract); if (posOnly) { /* * Theoretically it's not quite 100% accurate because the spec says * that ultimately a scaled coord of -x.0 should map to int coord * -x + 1 with mirroring, not -x (this does not matter for bilinear * filtering). */ coord = lp_build_abs(coord_bld, coord); /* kill off NaNs */ /* XXX: not safe without arch rounding, fract can be anything. */ coord = lp_build_max_ext(coord_bld, coord, coord_bld->zero, GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); } return coord; } /** * Helper to compute the first coord and the weight for * linear wrap repeat npot textures */ void lp_build_coord_repeat_npot_linear(struct lp_build_sample_context *bld, LLVMValueRef coord_f, LLVMValueRef length_i, LLVMValueRef length_f, LLVMValueRef *coord0_i, LLVMValueRef *weight_f) { struct lp_build_context *coord_bld = &bld->coord_bld; struct lp_build_context *int_coord_bld = &bld->int_coord_bld; LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5); LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length_i, int_coord_bld->one); LLVMValueRef mask; /* wrap with normalized floats is just fract */ coord_f = lp_build_fract(coord_bld, coord_f); /* mul by size and subtract 0.5 */ coord_f = lp_build_mul(coord_bld, coord_f, length_f); coord_f = lp_build_sub(coord_bld, coord_f, half); /* * we avoided the 0.5/length division before the repeat wrap, * now need to fix up edge cases with selects */ /* * Note we do a float (unordered) compare so we can eliminate NaNs. * (Otherwise would need fract_safe above). */ mask = lp_build_compare(coord_bld->gallivm, coord_bld->type, PIPE_FUNC_LESS, coord_f, coord_bld->zero); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord_f, coord0_i, weight_f); *coord0_i = lp_build_select(int_coord_bld, mask, length_minus_one, *coord0_i); } /** * Build LLVM code for texture wrap mode for linear filtering. * \param x0_out returns first integer texcoord * \param x1_out returns second integer texcoord * \param weight_out returns linear interpolation weight */ static void lp_build_sample_wrap_linear(struct lp_build_sample_context *bld, bool is_gather, LLVMValueRef coord, LLVMValueRef length, LLVMValueRef length_f, LLVMValueRef offset, bool is_pot, unsigned wrap_mode, LLVMValueRef *x0_out, LLVMValueRef *x1_out, LLVMValueRef *weight_out) { struct lp_build_context *coord_bld = &bld->coord_bld; struct lp_build_context *int_coord_bld = &bld->int_coord_bld; LLVMBuilderRef builder = bld->gallivm->builder; LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5); LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one); LLVMValueRef coord0, coord1, weight; switch (wrap_mode) { case PIPE_TEX_WRAP_REPEAT: if (is_pot) { /* mul by size and subtract 0.5 */ coord = lp_build_mul(coord_bld, coord, length_f); coord = lp_build_sub(coord_bld, coord, half); if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); /* repeat wrap */ coord0 = LLVMBuildAnd(builder, coord0, length_minus_one, ""); coord1 = LLVMBuildAnd(builder, coord1, length_minus_one, ""); } else { LLVMValueRef mask; if (offset) { offset = lp_build_int_to_float(coord_bld, offset); offset = lp_build_div(coord_bld, offset, length_f); coord = lp_build_add(coord_bld, coord, offset); } lp_build_coord_repeat_npot_linear(bld, coord, length, length_f, &coord0, &weight); mask = lp_build_compare(int_coord_bld->gallivm, int_coord_bld->type, PIPE_FUNC_NOTEQUAL, coord0, length_minus_one); coord1 = LLVMBuildAnd(builder, lp_build_add(int_coord_bld, coord0, int_coord_bld->one), mask, ""); } break; case PIPE_TEX_WRAP_CLAMP: if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } /* * clamp to [0, length] * * Unlike some other wrap modes, this should be correct for gather * too. GL_CLAMP explicitly does this clamp on the coord prior to * actual wrapping (which is per sample). */ coord = lp_build_clamp(coord_bld, coord, coord_bld->zero, length_f); coord = lp_build_sub(coord_bld, coord, half); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); break; case PIPE_TEX_WRAP_CLAMP_TO_EDGE: { struct lp_build_context abs_coord_bld = bld->coord_bld; abs_coord_bld.type.sign = false; if (bld->static_sampler_state->normalized_coords) { /* mul by tex size */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } /* clamp to length max */ coord = lp_build_min_ext(coord_bld, coord, length_f, GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); if (!is_gather) { /* subtract 0.5 */ coord = lp_build_sub(coord_bld, coord, half); /* clamp to [0, length - 0.5] */ coord = lp_build_max(coord_bld, coord, coord_bld->zero); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(&abs_coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); } else { /* * The non-gather path will end up with coords 0, 1 if coord was * smaller than 0.5 (with corresponding weight 0.0 so it doesn't * really matter what the second coord is). But for gather, we * really need to end up with coords 0, 0. */ coord = lp_build_max(coord_bld, coord, coord_bld->zero); coord0 = lp_build_sub(coord_bld, coord, half); coord1 = lp_build_add(coord_bld, coord, half); /* Values range ([-0.5, length_f - 0.5], [0.5, length_f + 0.5] */ coord0 = lp_build_itrunc(coord_bld, coord0); coord1 = lp_build_itrunc(coord_bld, coord1); weight = coord_bld->undef; } /* coord1 = min(coord1, length-1) */ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one); break; } case PIPE_TEX_WRAP_CLAMP_TO_BORDER: if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } /* * We don't need any clamp. Technically, for very large (pos or neg) * (or infinite) values, clamp against [-length, length] would be * correct, but we don't need to guarantee any specific * result for such coords (the ifloor will be undefined, but for modes * requiring border all resulting coords are safe). */ coord = lp_build_sub(coord_bld, coord, half); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); break; case PIPE_TEX_WRAP_MIRROR_REPEAT: if (offset) { offset = lp_build_int_to_float(coord_bld, offset); offset = lp_build_div(coord_bld, offset, length_f); coord = lp_build_add(coord_bld, coord, offset); } if (!is_gather) { /* compute mirror function */ coord = lp_build_coord_mirror(bld, coord, true); /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); coord = lp_build_sub(coord_bld, coord, half); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); /* coord0 = max(coord0, 0) */ coord0 = lp_build_max(int_coord_bld, coord0, int_coord_bld->zero); /* coord1 = min(coord1, length-1) */ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one); } else { /* * This is pretty reasonable in the end, all what the tests care * about is nasty edge cases (scaled coords x.5, so the individual * coords are actually integers, which is REALLY tricky to get right * due to this working differently both for negative numbers as well * as for even/odd cases). But with enough magic it's not too complex * after all. * Maybe should try a bit arithmetic one though for POT textures... */ LLVMValueRef isNeg; /* * Wrapping just once still works, even though it means we can * get "wrong" sign due to performing mirror in the middle of the * two coords (because this can only happen very near the odd/even * edges, so both coords will actually end up as 0 or length - 1 * in the end). * For GL4 gather with per-sample offsets we'd need to the mirroring * per coord too. */ coord = lp_build_coord_mirror(bld, coord, false); coord = lp_build_mul(coord_bld, coord, length_f); /* * NaNs should be safe here, we'll do away with them with * the ones' complement plus min. */ coord0 = lp_build_sub(coord_bld, coord, half); coord0 = lp_build_ifloor(coord_bld, coord0); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); /* ones complement for neg numbers (mirror(negX) = X - 1) */ isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, coord0, int_coord_bld->zero); coord0 = lp_build_xor(int_coord_bld, coord0, isNeg); isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, coord1, int_coord_bld->zero); coord1 = lp_build_xor(int_coord_bld, coord1, isNeg); coord0 = lp_build_min(int_coord_bld, coord0, length_minus_one); coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one); weight = coord_bld->undef; } break; case PIPE_TEX_WRAP_MIRROR_CLAMP: if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } /* * XXX: probably not correct for gather, albeit I'm not * entirely sure as it's poorly specified. The wrapping looks * correct according to the spec which is against gl 1.2.1, * however negative values will be swapped - gl re-specified * wrapping with newer versions (no more pre-clamp except with * GL_CLAMP). */ coord = lp_build_abs(coord_bld, coord); /* clamp to [0, length] */ coord = lp_build_min_ext(coord_bld, coord, length_f, GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); coord = lp_build_sub(coord_bld, coord, half); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); break; case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: { struct lp_build_context abs_coord_bld = bld->coord_bld; abs_coord_bld.type.sign = false; if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } if (!is_gather) { coord = lp_build_abs(coord_bld, coord); /* clamp to length max */ coord = lp_build_min_ext(coord_bld, coord, length_f, GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); /* subtract 0.5 */ coord = lp_build_sub(coord_bld, coord, half); /* clamp to [0, length - 0.5] */ coord = lp_build_max(coord_bld, coord, coord_bld->zero); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(&abs_coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); /* coord1 = min(coord1, length-1) */ coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one); } else { /* * The non-gather path will swap coord0/1 if coord was negative, * which is ok for filtering since the filter weight matches * accordingly. Also, if coord is close to zero, coord0/1 will * be 0 and 1, instead of 0 and 0 (again ok due to filter * weight being 0.0). Both issues need to be fixed for gather. */ LLVMValueRef isNeg; /* * Actually wanted to cheat here and use: * coord1 = lp_build_iround(coord_bld, coord); * but it's not good enough for some tests (even piglit * textureGather is set up in a way so the coords area always * .5, that is right at the crossover points). * So do ordinary sub/floor, then do ones' complement * for negative numbers. * (Note can't just do sub|add/abs/itrunc per coord neither - * because the spec demands that mirror(3.0) = 3 but * mirror(-3.0) = 2.) */ coord = lp_build_sub(coord_bld, coord, half); coord0 = lp_build_ifloor(coord_bld, coord); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, coord0, int_coord_bld->zero); coord0 = lp_build_xor(int_coord_bld, isNeg, coord0); coord0 = lp_build_min(int_coord_bld, coord0, length_minus_one); isNeg = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, coord1, int_coord_bld->zero); coord1 = lp_build_xor(int_coord_bld, isNeg, coord1); coord1 = lp_build_min(int_coord_bld, coord1, length_minus_one); weight = coord_bld->undef; } } break; case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: { if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } /* * XXX: probably not correct for gather due to swapped * order if coord is negative (same rationale as for * MIRROR_CLAMP). */ coord = lp_build_abs(coord_bld, coord); /* * We don't need any clamp. Technically, for very large * (or infinite) values, clamp against length would be * correct, but we don't need to guarantee any specific * result for such coords (the ifloor will be undefined, but * for modes requiring border all resulting coords are safe). */ coord = lp_build_sub(coord_bld, coord, half); /* convert to int, compute lerp weight */ lp_build_ifloor_fract(coord_bld, coord, &coord0, &weight); coord1 = lp_build_add(int_coord_bld, coord0, int_coord_bld->one); } break; default: assert(0); coord0 = NULL; coord1 = NULL; weight = NULL; } *x0_out = coord0; *x1_out = coord1; *weight_out = weight; } /** * Build LLVM code for texture wrap mode for nearest filtering. * \param coord the incoming texcoord (nominally in [0,1]) * \param length the texture size along one dimension, as int vector * \param length_f the texture size along one dimension, as float vector * \param offset texel offset along one dimension (as int vector) * \param is_pot if TRUE, length is a power of two * \param wrap_mode one of PIPE_TEX_WRAP_x */ static LLVMValueRef lp_build_sample_wrap_nearest(struct lp_build_sample_context *bld, LLVMValueRef coord, LLVMValueRef length, LLVMValueRef length_f, LLVMValueRef offset, bool is_pot, unsigned wrap_mode) { struct lp_build_context *coord_bld = &bld->coord_bld; struct lp_build_context *int_coord_bld = &bld->int_coord_bld; LLVMBuilderRef builder = bld->gallivm->builder; LLVMValueRef length_minus_one = lp_build_sub(int_coord_bld, length, int_coord_bld->one); LLVMValueRef icoord; switch (wrap_mode) { case PIPE_TEX_WRAP_REPEAT: if (is_pot) { coord = lp_build_mul(coord_bld, coord, length_f); icoord = lp_build_ifloor(coord_bld, coord); if (offset) { icoord = lp_build_add(int_coord_bld, icoord, offset); } icoord = LLVMBuildAnd(builder, icoord, length_minus_one, ""); } else { if (offset) { offset = lp_build_int_to_float(coord_bld, offset); offset = lp_build_div(coord_bld, offset, length_f); coord = lp_build_add(coord_bld, coord, offset); } /* take fraction, unnormalize */ coord = lp_build_fract_safe(coord_bld, coord); coord = lp_build_mul(coord_bld, coord, length_f); icoord = lp_build_itrunc(coord_bld, coord); } break; case PIPE_TEX_WRAP_CLAMP: case PIPE_TEX_WRAP_CLAMP_TO_EDGE: if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } /* floor */ /* use itrunc instead since we clamp to 0 anyway */ icoord = lp_build_itrunc(coord_bld, coord); /* clamp to [0, length - 1]. */ icoord = lp_build_clamp(int_coord_bld, icoord, int_coord_bld->zero, length_minus_one); break; case PIPE_TEX_WRAP_CLAMP_TO_BORDER: if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } /* no clamp necessary, border masking will handle this */ icoord = lp_build_ifloor(coord_bld, coord); if (offset) { icoord = lp_build_add(int_coord_bld, icoord, offset); } break; case PIPE_TEX_WRAP_MIRROR_REPEAT: if (offset) { offset = lp_build_int_to_float(coord_bld, offset); offset = lp_build_div(coord_bld, offset, length_f); coord = lp_build_add(coord_bld, coord, offset); } /* compute mirror function */ coord = lp_build_coord_mirror(bld, coord, true); /* scale coord to length */ assert(bld->static_sampler_state->normalized_coords); coord = lp_build_mul(coord_bld, coord, length_f); /* itrunc == ifloor here */ icoord = lp_build_itrunc(coord_bld, coord); /* clamp to [0, length - 1] */ icoord = lp_build_min(int_coord_bld, icoord, length_minus_one); break; case PIPE_TEX_WRAP_MIRROR_CLAMP: case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE: if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } coord = lp_build_abs(coord_bld, coord); /* itrunc == ifloor here */ icoord = lp_build_itrunc(coord_bld, coord); /* * Use unsigned min due to possible undef values (NaNs, overflow) */ { struct lp_build_context abs_coord_bld = *int_coord_bld; abs_coord_bld.type.sign = false; /* clamp to [0, length - 1] */ icoord = lp_build_min(&abs_coord_bld, icoord, length_minus_one); } break; case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER: if (bld->static_sampler_state->normalized_coords) { /* scale coord to length */ coord = lp_build_mul(coord_bld, coord, length_f); } if (offset) { offset = lp_build_int_to_float(coord_bld, offset); coord = lp_build_add(coord_bld, coord, offset); } coord = lp_build_abs(coord_bld, coord); /* itrunc == ifloor here */ icoord = lp_build_itrunc(coord_bld, coord); break; default: assert(0); icoord = NULL; } return icoord; } /** * Do shadow test/comparison. * \param p shadow ref value * \param texel the texel to compare against */ static LLVMValueRef lp_build_sample_comparefunc(struct lp_build_sample_context *bld, LLVMValueRef p, LLVMValueRef texel) { struct lp_build_context *texel_bld = &bld->texel_bld; LLVMValueRef res; if (0) { //lp_build_print_value(bld->gallivm, "shadow cmp coord", p); lp_build_print_value(bld->gallivm, "shadow cmp texel", texel); } /* result = (p FUNC texel) ? 1 : 0 */ /* * honor d3d10 floating point rules here, which state that comparisons * are ordered except NOT_EQUAL which is unordered. */ if (bld->static_sampler_state->compare_func != PIPE_FUNC_NOTEQUAL) { res = lp_build_cmp_ordered(texel_bld, bld->static_sampler_state->compare_func, p, texel); } else { res = lp_build_cmp(texel_bld, bld->static_sampler_state->compare_func, p, texel); } return res; } /** * Generate code to sample a mipmap level with nearest filtering. * If sampling a cube texture, r = cube face in [0,5]. */ static void lp_build_sample_image_nearest(struct lp_build_sample_context *bld, LLVMValueRef size, LLVMValueRef row_stride_vec, LLVMValueRef img_stride_vec, LLVMValueRef data_ptr, LLVMValueRef mipoffsets, LLVMValueRef ilevel, const LLVMValueRef *coords, const LLVMValueRef *offsets, LLVMValueRef colors_out[4]) { const unsigned dims = bld->dims; LLVMValueRef width_vec; LLVMValueRef height_vec; LLVMValueRef depth_vec; LLVMValueRef flt_size; LLVMValueRef flt_width_vec; LLVMValueRef flt_height_vec; LLVMValueRef flt_depth_vec; LLVMValueRef x, y = NULL, z = NULL; lp_build_extract_image_sizes(bld, &bld->int_size_bld, bld->int_coord_type, size, &width_vec, &height_vec, &depth_vec); flt_size = lp_build_int_to_float(&bld->float_size_bld, size); lp_build_extract_image_sizes(bld, &bld->float_size_bld, bld->coord_type, flt_size, &flt_width_vec, &flt_height_vec, &flt_depth_vec); /* * Compute integer texcoords. */ x = lp_build_sample_wrap_nearest(bld, coords[0], width_vec, flt_width_vec, offsets[0], bld->static_texture_state->pot_width, bld->static_sampler_state->wrap_s); lp_build_name(x, "tex.x.wrapped"); if (dims >= 2) { y = lp_build_sample_wrap_nearest(bld, coords[1], height_vec, flt_height_vec, offsets[1], bld->static_texture_state->pot_height, bld->static_sampler_state->wrap_t); lp_build_name(y, "tex.y.wrapped"); if (dims == 3) { z = lp_build_sample_wrap_nearest(bld, coords[2], depth_vec, flt_depth_vec, offsets[2], bld->static_texture_state->pot_depth, bld->static_sampler_state->wrap_r); lp_build_name(z, "tex.z.wrapped"); } } if (has_layer_coord(bld->static_texture_state->target)) { if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) { /* add cube layer to face */ z = lp_build_add(&bld->int_coord_bld, coords[2], coords[3]); } else { z = coords[2]; } lp_build_name(z, "tex.z.layer"); } /* * Get texture colors. */ lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x, y, z, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, colors_out); if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) { LLVMValueRef cmpval; cmpval = lp_build_sample_comparefunc(bld, coords[4], colors_out[0]); /* this is really just a AND 1.0, cmpval but llvm is clever enough */ colors_out[0] = lp_build_select(&bld->texel_bld, cmpval, bld->texel_bld.one, bld->texel_bld.zero); colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0]; } } /** * Like a lerp, but inputs are 0/~0 masks, so can simplify slightly. */ static LLVMValueRef lp_build_masklerp(struct lp_build_context *bld, LLVMValueRef weight, LLVMValueRef mask0, LLVMValueRef mask1) { struct gallivm_state *gallivm = bld->gallivm; LLVMBuilderRef builder = gallivm->builder; LLVMValueRef weight2; weight2 = lp_build_sub(bld, bld->one, weight); weight = LLVMBuildBitCast(builder, weight, lp_build_int_vec_type(gallivm, bld->type), ""); weight2 = LLVMBuildBitCast(builder, weight2, lp_build_int_vec_type(gallivm, bld->type), ""); weight = LLVMBuildAnd(builder, weight, mask1, ""); weight2 = LLVMBuildAnd(builder, weight2, mask0, ""); weight = LLVMBuildBitCast(builder, weight, bld->vec_type, ""); weight2 = LLVMBuildBitCast(builder, weight2, bld->vec_type, ""); return lp_build_add(bld, weight, weight2); } /** * Like a 2d lerp, but inputs are 0/~0 masks, so can simplify slightly. */ static LLVMValueRef lp_build_masklerp2d(struct lp_build_context *bld, LLVMValueRef weight0, LLVMValueRef weight1, LLVMValueRef mask00, LLVMValueRef mask01, LLVMValueRef mask10, LLVMValueRef mask11) { LLVMValueRef val0 = lp_build_masklerp(bld, weight0, mask00, mask01); LLVMValueRef val1 = lp_build_masklerp(bld, weight0, mask10, mask11); return lp_build_lerp(bld, weight1, val0, val1, 0); } /* * this is a bit excessive code for something OpenGL just recommends * but does not require. */ #define ACCURATE_CUBE_CORNERS 1 /** * Generate code to sample a mipmap level with linear filtering. * If sampling a cube texture, r = cube face in [0,5]. * If linear_mask is present, only pixels having their mask set * will receive linear filtering, the rest will use nearest. */ static void lp_build_sample_image_linear(struct lp_build_sample_context *bld, bool is_gather, LLVMValueRef size, LLVMValueRef linear_mask, LLVMValueRef row_stride_vec, LLVMValueRef img_stride_vec, LLVMValueRef data_ptr, LLVMValueRef mipoffsets, LLVMValueRef ilevel, const LLVMValueRef *coords, const LLVMValueRef *offsets, LLVMValueRef colors_out[4]) { LLVMBuilderRef builder = bld->gallivm->builder; struct lp_build_context *ivec_bld = &bld->int_coord_bld; struct lp_build_context *coord_bld = &bld->coord_bld; struct lp_build_context *texel_bld = &bld->texel_bld; const unsigned dims = bld->dims; LLVMValueRef width_vec; LLVMValueRef height_vec; LLVMValueRef depth_vec; LLVMValueRef flt_size; LLVMValueRef flt_width_vec; LLVMValueRef flt_height_vec; LLVMValueRef flt_depth_vec; LLVMValueRef fall_off[4] = { 0 }, have_corners = NULL; LLVMValueRef z1 = NULL; LLVMValueRef z00 = NULL, z01 = NULL, z10 = NULL, z11 = NULL; LLVMValueRef x00 = NULL, x01 = NULL, x10 = NULL, x11 = NULL; LLVMValueRef y00 = NULL, y01 = NULL, y10 = NULL, y11 = NULL; LLVMValueRef s_fpart, t_fpart = NULL, r_fpart = NULL; LLVMValueRef xs[4], ys[4], zs[4]; LLVMValueRef neighbors[2][2][4]; bool seamless_cube_filter, accurate_cube_corners; unsigned chan_swiz = bld->static_texture_state->swizzle_r; if (is_gather) { switch (bld->gather_comp) { case 0: chan_swiz = bld->static_texture_state->swizzle_r; break; case 1: chan_swiz = bld->static_texture_state->swizzle_g; break; case 2: chan_swiz = bld->static_texture_state->swizzle_b; break; case 3: chan_swiz = bld->static_texture_state->swizzle_a; break; default: break; } } seamless_cube_filter = (bld->static_texture_state->target == PIPE_TEXTURE_CUBE || bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) && bld->static_sampler_state->seamless_cube_map; /* * Disable accurate cube corners for integer textures, which should only * get here in the gather path. */ accurate_cube_corners = ACCURATE_CUBE_CORNERS && seamless_cube_filter && !util_format_is_pure_integer(bld->static_texture_state->format); lp_build_extract_image_sizes(bld, &bld->int_size_bld, bld->int_coord_type, size, &width_vec, &height_vec, &depth_vec); flt_size = lp_build_int_to_float(&bld->float_size_bld, size); lp_build_extract_image_sizes(bld, &bld->float_size_bld, bld->coord_type, flt_size, &flt_width_vec, &flt_height_vec, &flt_depth_vec); LLVMTypeRef int1t = LLVMInt1TypeInContext(bld->gallivm->context); /* * Compute integer texcoords. */ if (!seamless_cube_filter) { lp_build_sample_wrap_linear(bld, is_gather, coords[0], width_vec, flt_width_vec, offsets[0], bld->static_texture_state->pot_width, bld->static_sampler_state->wrap_s, &x00, &x01, &s_fpart); lp_build_name(x00, "tex.x0.wrapped"); lp_build_name(x01, "tex.x1.wrapped"); x10 = x00; x11 = x01; if (dims >= 2) { lp_build_sample_wrap_linear(bld, is_gather, coords[1], height_vec, flt_height_vec, offsets[1], bld->static_texture_state->pot_height, bld->static_sampler_state->wrap_t, &y00, &y10, &t_fpart); lp_build_name(y00, "tex.y0.wrapped"); lp_build_name(y10, "tex.y1.wrapped"); y01 = y00; y11 = y10; if (dims == 3) { lp_build_sample_wrap_linear(bld, is_gather, coords[2], depth_vec, flt_depth_vec, offsets[2], bld->static_texture_state->pot_depth, bld->static_sampler_state->wrap_r, &z00, &z1, &r_fpart); z01 = z10 = z11 = z00; lp_build_name(z00, "tex.z0.wrapped"); lp_build_name(z1, "tex.z1.wrapped"); } } if (has_layer_coord(bld->static_texture_state->target)) { if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) { /* add cube layer to face */ z00 = z01 = z10 = z11 = z1 = lp_build_add(&bld->int_coord_bld, coords[2], coords[3]); } else { z00 = z01 = z10 = z11 = z1 = coords[2]; /* cube face or layer */ } lp_build_name(z00, "tex.z0.layer"); lp_build_name(z1, "tex.z1.layer"); } } else { struct lp_build_if_state edge_if; LLVMValueRef new_faces[4], new_xcoords[4][2], new_ycoords[4][2]; LLVMValueRef coord0, coord1, have_edge, have_corner; LLVMValueRef fall_off_ym_notxm, fall_off_ym_notxp, fall_off_x, fall_off_y; LLVMValueRef fall_off_yp_notxm, fall_off_yp_notxp; LLVMValueRef x0, x1, y0, y1, y0_clamped, y1_clamped; LLVMValueRef face = coords[2]; LLVMValueRef half = lp_build_const_vec(bld->gallivm, coord_bld->type, 0.5f); LLVMValueRef length_minus_one = lp_build_sub(ivec_bld, width_vec, ivec_bld->one); /* XXX drop height calcs. Could (should) do this without seamless filtering too */ height_vec = width_vec; flt_height_vec = flt_width_vec; /* XXX the overflow logic is actually sort of duplicated with trilinear, * since an overflow in one mip should also have a corresponding overflow * in another. */ /* should always have normalized coords, and offsets are undefined */ assert(bld->static_sampler_state->normalized_coords); /* * The coords should all be between [0,1] however we can have NaNs, * which will wreak havoc. In particular the y1_clamped value below * can be -INT_MAX (on x86) and be propagated right through (probably * other values might be bogus in the end too). * So kill off the NaNs here. */ coord0 = lp_build_max_ext(coord_bld, coords[0], coord_bld->zero, GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); coord0 = lp_build_mul(coord_bld, coord0, flt_width_vec); /* instead of clamp, build mask if overflowed */ coord0 = lp_build_sub(coord_bld, coord0, half); /* convert to int, compute lerp weight */ /* not ideal with AVX (and no AVX2) */ lp_build_ifloor_fract(coord_bld, coord0, &x0, &s_fpart); x1 = lp_build_add(ivec_bld, x0, ivec_bld->one); coord1 = lp_build_max_ext(coord_bld, coords[1], coord_bld->zero, GALLIVM_NAN_RETURN_OTHER_SECOND_NONNAN); coord1 = lp_build_mul(coord_bld, coord1, flt_height_vec); coord1 = lp_build_sub(coord_bld, coord1, half); lp_build_ifloor_fract(coord_bld, coord1, &y0, &t_fpart); y1 = lp_build_add(ivec_bld, y0, ivec_bld->one); fall_off[0] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, x0, ivec_bld->zero); fall_off[1] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, x1, length_minus_one); fall_off[2] = lp_build_cmp(ivec_bld, PIPE_FUNC_LESS, y0, ivec_bld->zero); fall_off[3] = lp_build_cmp(ivec_bld, PIPE_FUNC_GREATER, y1, length_minus_one); fall_off_x = lp_build_or(ivec_bld, fall_off[0], fall_off[1]); fall_off_y = lp_build_or(ivec_bld, fall_off[2], fall_off[3]); have_edge = lp_build_or(ivec_bld, fall_off_x, fall_off_y); have_edge = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_edge); /* needed for accurate corner filtering branch later, rely on 0 init */ have_corners = lp_build_alloca(bld->gallivm, int1t, "have_corner"); for (unsigned texel_index = 0; texel_index < 4; texel_index++) { xs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "xs"); ys[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "ys"); zs[texel_index] = lp_build_alloca(bld->gallivm, ivec_bld->vec_type, "zs"); } lp_build_if(&edge_if, bld->gallivm, have_edge); have_corner = lp_build_and(ivec_bld, fall_off_x, fall_off_y); have_corner = lp_build_any_true_range(ivec_bld, ivec_bld->type.length, have_corner); LLVMBuildStore(builder, have_corner, have_corners); /* * Need to feed clamped values here for cheap corner handling, * but only for y coord (as when falling off both edges we only * fall off the x one) - this should be sufficient. */ y0_clamped = lp_build_max(ivec_bld, y0, ivec_bld->zero); y1_clamped = lp_build_min(ivec_bld, y1, length_minus_one); /* * Get all possible new coords. */ lp_build_cube_new_coords(ivec_bld, face, x0, x1, y0_clamped, y1_clamped, length_minus_one, new_faces, new_xcoords, new_ycoords); /* handle fall off x-, x+ direction */ /* determine new coords, face (not both fall_off vars can be true at same time) */ x00 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][0], x0); y00 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][0], y0_clamped); x10 = lp_build_select(ivec_bld, fall_off[0], new_xcoords[0][1], x0); y10 = lp_build_select(ivec_bld, fall_off[0], new_ycoords[0][1], y1_clamped); x01 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][0], x1); y01 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][0], y0_clamped); x11 = lp_build_select(ivec_bld, fall_off[1], new_xcoords[1][1], x1); y11 = lp_build_select(ivec_bld, fall_off[1], new_ycoords[1][1], y1_clamped); z00 = z10 = lp_build_select(ivec_bld, fall_off[0], new_faces[0], face); z01 = z11 = lp_build_select(ivec_bld, fall_off[1], new_faces[1], face); /* handle fall off y-, y+ direction */ /* * Cheap corner logic: just hack up things so a texel doesn't fall * off both sides (which means filter weights will be wrong but we'll only * use valid texels in the filter). * This means however (y) coords must additionally be clamped (see above). * This corner handling should be fully OpenGL (but not d3d10) compliant. */ fall_off_ym_notxm = lp_build_andnot(ivec_bld, fall_off[2], fall_off[0]); fall_off_ym_notxp = lp_build_andnot(ivec_bld, fall_off[2], fall_off[1]); fall_off_yp_notxm = lp_build_andnot(ivec_bld, fall_off[3], fall_off[0]); fall_off_yp_notxp = lp_build_andnot(ivec_bld, fall_off[3], fall_off[1]); x00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_xcoords[2][0], x00); y00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_ycoords[2][0], y00); x01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_xcoords[2][1], x01); y01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_ycoords[2][1], y01); x10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_xcoords[3][0], x10); y10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_ycoords[3][0], y10); x11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_xcoords[3][1], x11); y11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_ycoords[3][1], y11); z00 = lp_build_select(ivec_bld, fall_off_ym_notxm, new_faces[2], z00); z01 = lp_build_select(ivec_bld, fall_off_ym_notxp, new_faces[2], z01); z10 = lp_build_select(ivec_bld, fall_off_yp_notxm, new_faces[3], z10); z11 = lp_build_select(ivec_bld, fall_off_yp_notxp, new_faces[3], z11); if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) { /* now can add cube layer to face (per sample) */ z00 = lp_build_add(ivec_bld, z00, coords[3]); z01 = lp_build_add(ivec_bld, z01, coords[3]); z10 = lp_build_add(ivec_bld, z10, coords[3]); z11 = lp_build_add(ivec_bld, z11, coords[3]); } LLVMBuildStore(builder, x00, xs[0]); LLVMBuildStore(builder, x01, xs[1]); LLVMBuildStore(builder, x10, xs[2]); LLVMBuildStore(builder, x11, xs[3]); LLVMBuildStore(builder, y00, ys[0]); LLVMBuildStore(builder, y01, ys[1]); LLVMBuildStore(builder, y10, ys[2]); LLVMBuildStore(builder, y11, ys[3]); LLVMBuildStore(builder, z00, zs[0]); LLVMBuildStore(builder, z01, zs[1]); LLVMBuildStore(builder, z10, zs[2]); LLVMBuildStore(builder, z11, zs[3]); lp_build_else(&edge_if); LLVMBuildStore(builder, x0, xs[0]); LLVMBuildStore(builder, x1, xs[1]); LLVMBuildStore(builder, x0, xs[2]); LLVMBuildStore(builder, x1, xs[3]); LLVMBuildStore(builder, y0, ys[0]); LLVMBuildStore(builder, y0, ys[1]); LLVMBuildStore(builder, y1, ys[2]); LLVMBuildStore(builder, y1, ys[3]); if (bld->static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) { LLVMValueRef cube_layer = lp_build_add(ivec_bld, face, coords[3]); LLVMBuildStore(builder, cube_layer, zs[0]); LLVMBuildStore(builder, cube_layer, zs[1]); LLVMBuildStore(builder, cube_layer, zs[2]); LLVMBuildStore(builder, cube_layer, zs[3]); } else { LLVMBuildStore(builder, face, zs[0]); LLVMBuildStore(builder, face, zs[1]); LLVMBuildStore(builder, face, zs[2]); LLVMBuildStore(builder, face, zs[3]); } lp_build_endif(&edge_if); LLVMTypeRef type = ivec_bld->vec_type; x00 = LLVMBuildLoad2(builder, type, xs[0], ""); x01 = LLVMBuildLoad2(builder, type, xs[1], ""); x10 = LLVMBuildLoad2(builder, type, xs[2], ""); x11 = LLVMBuildLoad2(builder, type, xs[3], ""); y00 = LLVMBuildLoad2(builder, type, ys[0], ""); y01 = LLVMBuildLoad2(builder, type, ys[1], ""); y10 = LLVMBuildLoad2(builder, type, ys[2], ""); y11 = LLVMBuildLoad2(builder, type, ys[3], ""); z00 = LLVMBuildLoad2(builder, type, zs[0], ""); z01 = LLVMBuildLoad2(builder, type, zs[1], ""); z10 = LLVMBuildLoad2(builder, type, zs[2], ""); z11 = LLVMBuildLoad2(builder, type, zs[3], ""); } if (linear_mask) { /* * Whack filter weights into place. Whatever texel had more weight is * the one which should have been selected by nearest filtering hence * just use 100% weight for it. */ struct lp_build_context *c_bld = &bld->coord_bld; LLVMValueRef w1_mask, w1_weight; LLVMValueRef half = lp_build_const_vec(bld->gallivm, c_bld->type, 0.5f); w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, s_fpart, half); /* this select is really just a "and" */ w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero); s_fpart = lp_build_select(c_bld, linear_mask, s_fpart, w1_weight); if (dims >= 2) { w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, t_fpart, half); w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero); t_fpart = lp_build_select(c_bld, linear_mask, t_fpart, w1_weight); if (dims == 3) { w1_mask = lp_build_cmp(c_bld, PIPE_FUNC_GREATER, r_fpart, half); w1_weight = lp_build_select(c_bld, w1_mask, c_bld->one, c_bld->zero); r_fpart = lp_build_select(c_bld, linear_mask, r_fpart, w1_weight); } } } /* * Get texture colors. */ /* get x0/x1 texels */ lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x00, y00, z00, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors[0][0]); lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x01, y01, z01, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors[0][1]); if (dims == 1) { assert(!is_gather); if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { lp_build_reduce_filter(texel_bld, bld->static_sampler_state->reduction_mode, 0, 4, s_fpart, neighbors[0][0], neighbors[0][1], colors_out); } else { LLVMValueRef cmpval0, cmpval1; cmpval0 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); cmpval1 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); /* simplified lerp, AND mask with weight and add */ colors_out[0] = lp_build_masklerp(texel_bld, s_fpart, cmpval0, cmpval1); colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0]; } } else { /* 2D/3D texture */ struct lp_build_if_state corner_if; LLVMValueRef colors0[4], colorss[4] = { 0 }; /* get x0/x1 texels at y1 */ lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x10, y10, z10, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors[1][0]); lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x11, y11, z11, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors[1][1]); /* * To avoid having to duplicate linear_mask / fetch code use * another branch (with corner condition though edge would work * as well) here. */ if (have_corners && accurate_cube_corners && bld->static_sampler_state->reduction_mode == PIPE_TEX_REDUCTION_WEIGHTED_AVERAGE) { LLVMValueRef c00, c01, c10, c11, c00f, c01f, c10f, c11f; LLVMValueRef have_corner, one_third; colorss[0] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs0"); colorss[1] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs1"); colorss[2] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs2"); colorss[3] = lp_build_alloca(bld->gallivm, coord_bld->vec_type, "cs3"); have_corner = LLVMBuildLoad2(builder, int1t, have_corners, ""); lp_build_if(&corner_if, bld->gallivm, have_corner); one_third = lp_build_const_vec(bld->gallivm, coord_bld->type, 1.0f/3.0f); /* find corner */ c00 = lp_build_and(ivec_bld, fall_off[0], fall_off[2]); c00f = LLVMBuildBitCast(builder, c00, coord_bld->vec_type, ""); c01 = lp_build_and(ivec_bld, fall_off[1], fall_off[2]); c01f = LLVMBuildBitCast(builder, c01, coord_bld->vec_type, ""); c10 = lp_build_and(ivec_bld, fall_off[0], fall_off[3]); c10f = LLVMBuildBitCast(builder, c10, coord_bld->vec_type, ""); c11 = lp_build_and(ivec_bld, fall_off[1], fall_off[3]); c11f = LLVMBuildBitCast(builder, c11, coord_bld->vec_type, ""); if (!is_gather) { /* * we can't use standard 2d lerp as we need per-element weight * in case of corners, so just calculate bilinear result as * w00*s00 + w01*s01 + w10*s10 + w11*s11. * (This is actually less work than using 2d lerp, 7 vs. 9 * instructions, however calculating the weights needs another 6, * so actually probably not slower than 2d lerp only for 4 channels * as weights only need to be calculated once - of course fixing * the weights has additional cost.) */ LLVMValueRef w00, w01, w10, w11, wx0, wy0, c_weight, tmp; wx0 = lp_build_sub(coord_bld, coord_bld->one, s_fpart); wy0 = lp_build_sub(coord_bld, coord_bld->one, t_fpart); w00 = lp_build_mul(coord_bld, wx0, wy0); w01 = lp_build_mul(coord_bld, s_fpart, wy0); w10 = lp_build_mul(coord_bld, wx0, t_fpart); w11 = lp_build_mul(coord_bld, s_fpart, t_fpart); /* find corner weight */ c_weight = lp_build_select(coord_bld, c00, w00, coord_bld->zero); c_weight = lp_build_select(coord_bld, c01, w01, c_weight); c_weight = lp_build_select(coord_bld, c10, w10, c_weight); c_weight = lp_build_select(coord_bld, c11, w11, c_weight); /* * add 1/3 of the corner weight to the weight of the 3 other * samples and null out corner weight. */ c_weight = lp_build_mul(coord_bld, c_weight, one_third); w00 = lp_build_add(coord_bld, w00, c_weight); w00 = lp_build_andnot(coord_bld, w00, c00f); w01 = lp_build_add(coord_bld, w01, c_weight); w01 = lp_build_andnot(coord_bld, w01, c01f); w10 = lp_build_add(coord_bld, w10, c_weight); w10 = lp_build_andnot(coord_bld, w10, c10f); w11 = lp_build_add(coord_bld, w11, c_weight); w11 = lp_build_andnot(coord_bld, w11, c11f); if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { for (unsigned chan = 0; chan < 4; chan++) { colors0[chan] = lp_build_mul(coord_bld, w00, neighbors[0][0][chan]); tmp = lp_build_mul(coord_bld, w01, neighbors[0][1][chan]); colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]); tmp = lp_build_mul(coord_bld, w10, neighbors[1][0][chan]); colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]); tmp = lp_build_mul(coord_bld, w11, neighbors[1][1][chan]); colors0[chan] = lp_build_add(coord_bld, tmp, colors0[chan]); } } else { LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11; cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]); cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]); /* * inputs to interpolation are just masks so just add * masked weights together */ cmpval00 = LLVMBuildBitCast(builder, cmpval00, coord_bld->vec_type, ""); cmpval01 = LLVMBuildBitCast(builder, cmpval01, coord_bld->vec_type, ""); cmpval10 = LLVMBuildBitCast(builder, cmpval10, coord_bld->vec_type, ""); cmpval11 = LLVMBuildBitCast(builder, cmpval11, coord_bld->vec_type, ""); colors0[0] = lp_build_and(coord_bld, w00, cmpval00); tmp = lp_build_and(coord_bld, w01, cmpval01); colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]); tmp = lp_build_and(coord_bld, w10, cmpval10); colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]); tmp = lp_build_and(coord_bld, w11, cmpval11); colors0[0] = lp_build_add(coord_bld, tmp, colors0[0]); colors0[1] = colors0[2] = colors0[3] = colors0[0]; } } else { /* * We don't have any weights to adjust, so instead calculate * the fourth texel as simply the average of the other 3. * (This would work for non-gather too, however we'd have * a boatload more of the select stuff due to there being * 4 times as many colors as weights.) */ LLVMValueRef col00, col01, col10, col11; LLVMValueRef colc, colc0, colc1; col10 = lp_build_swizzle_soa_channel(texel_bld, neighbors[1][0], chan_swiz); col11 = lp_build_swizzle_soa_channel(texel_bld, neighbors[1][1], chan_swiz); col01 = lp_build_swizzle_soa_channel(texel_bld, neighbors[0][1], chan_swiz); col00 = lp_build_swizzle_soa_channel(texel_bld, neighbors[0][0], chan_swiz); /* * The spec says for comparison filtering, the comparison * must happen before synthesizing the new value. * This means all gathered values are always 0 or 1, * except for the non-existing texel, which can be 0,1/3,2/3,1... * Seems like we'd be allowed to just return 0 or 1 too, so we * could simplify and pass down the compare mask values to the * end (using int arithmetic/compare on the mask values to * construct the fourth texel) and only there convert to floats * but it's probably not worth it (it might be easier for the cpu * but not for the code)... */ if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) { LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11; cmpval00 = lp_build_sample_comparefunc(bld, coords[4], col00); cmpval01 = lp_build_sample_comparefunc(bld, coords[4], col01); cmpval10 = lp_build_sample_comparefunc(bld, coords[4], col10); cmpval11 = lp_build_sample_comparefunc(bld, coords[4], col11); col00 = lp_build_select(texel_bld, cmpval00, texel_bld->one, texel_bld->zero); col01 = lp_build_select(texel_bld, cmpval01, texel_bld->one, texel_bld->zero); col10 = lp_build_select(texel_bld, cmpval10, texel_bld->one, texel_bld->zero); col11 = lp_build_select(texel_bld, cmpval11, texel_bld->one, texel_bld->zero); } /* * Null out corner color. */ col00 = lp_build_andnot(coord_bld, col00, c00f); col01 = lp_build_andnot(coord_bld, col01, c01f); col10 = lp_build_andnot(coord_bld, col10, c10f); col11 = lp_build_andnot(coord_bld, col11, c11f); /* * New corner texel color is all colors added / 3. */ colc0 = lp_build_add(coord_bld, col00, col01); colc1 = lp_build_add(coord_bld, col10, col11); colc = lp_build_add(coord_bld, colc0, colc1); colc = lp_build_mul(coord_bld, one_third, colc); /* * Replace the corner texel color with the new value. */ col00 = lp_build_select(coord_bld, c00, colc, col00); col01 = lp_build_select(coord_bld, c01, colc, col01); col10 = lp_build_select(coord_bld, c10, colc, col10); col11 = lp_build_select(coord_bld, c11, colc, col11); colors0[0] = col10; colors0[1] = col11; colors0[2] = col01; colors0[3] = col00; } LLVMBuildStore(builder, colors0[0], colorss[0]); LLVMBuildStore(builder, colors0[1], colorss[1]); LLVMBuildStore(builder, colors0[2], colorss[2]); LLVMBuildStore(builder, colors0[3], colorss[3]); lp_build_else(&corner_if); } if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { if (is_gather) { /* * Just assign the red channel (no component selection yet). * This is a bit hackish, we usually do the swizzle at the * end of sampling (much less values to swizzle), but this * obviously cannot work when using gather. */ colors0[0] = lp_build_swizzle_soa_channel(texel_bld, neighbors[1][0], chan_swiz); colors0[1] = lp_build_swizzle_soa_channel(texel_bld, neighbors[1][1], chan_swiz); colors0[2] = lp_build_swizzle_soa_channel(texel_bld, neighbors[0][1], chan_swiz); colors0[3] = lp_build_swizzle_soa_channel(texel_bld, neighbors[0][0], chan_swiz); } else { /* Bilinear interpolate the four samples from the 2D image / 3D slice */ lp_build_reduce_filter_2d(texel_bld, bld->static_sampler_state->reduction_mode, 0, 4, s_fpart, t_fpart, neighbors[0][0], neighbors[0][1], neighbors[1][0], neighbors[1][1], colors0); } } else { LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11; cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]); cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]); if (is_gather) { /* more hacks for swizzling, should be X, ONE or ZERO... */ colors0[0] = lp_build_select(texel_bld, cmpval10, texel_bld->one, texel_bld->zero); colors0[1] = lp_build_select(texel_bld, cmpval11, texel_bld->one, texel_bld->zero); colors0[2] = lp_build_select(texel_bld, cmpval01, texel_bld->one, texel_bld->zero); colors0[3] = lp_build_select(texel_bld, cmpval00, texel_bld->one, texel_bld->zero); } else { colors0[0] = lp_build_masklerp2d(texel_bld, s_fpart, t_fpart, cmpval00, cmpval01, cmpval10, cmpval11); colors0[1] = colors0[2] = colors0[3] = colors0[0]; } } if (have_corners && accurate_cube_corners && bld->static_sampler_state->reduction_mode == PIPE_TEX_REDUCTION_WEIGHTED_AVERAGE) { LLVMBuildStore(builder, colors0[0], colorss[0]); LLVMBuildStore(builder, colors0[1], colorss[1]); LLVMBuildStore(builder, colors0[2], colorss[2]); LLVMBuildStore(builder, colors0[3], colorss[3]); lp_build_endif(&corner_if); colors0[0] = LLVMBuildLoad2(builder, coord_bld->vec_type, colorss[0], ""); colors0[1] = LLVMBuildLoad2(builder, coord_bld->vec_type, colorss[1], ""); colors0[2] = LLVMBuildLoad2(builder, coord_bld->vec_type, colorss[2], ""); colors0[3] = LLVMBuildLoad2(builder, coord_bld->vec_type, colorss[3], ""); } if (dims == 3) { LLVMValueRef neighbors1[2][2][4]; LLVMValueRef colors1[4]; assert(!is_gather); /* get x0/x1/y0/y1 texels at z1 */ lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x00, y00, z1, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors1[0][0]); lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x01, y01, z1, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors1[0][1]); lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x10, y10, z1, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors1[1][0]); lp_build_sample_texel_soa(bld, width_vec, height_vec, depth_vec, x11, y11, z1, row_stride_vec, img_stride_vec, data_ptr, mipoffsets, ilevel, neighbors1[1][1]); if (bld->static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE) { /* Bilinear interpolate the four samples from the second Z slice */ lp_build_reduce_filter_2d(texel_bld, bld->static_sampler_state->reduction_mode, 0, 4, s_fpart, t_fpart, neighbors1[0][0], neighbors1[0][1], neighbors1[1][0], neighbors1[1][1], colors1); /* Linearly interpolate the two samples from the two 3D slices */ lp_build_reduce_filter(texel_bld, bld->static_sampler_state->reduction_mode, 0, 4, r_fpart, colors0, colors1, colors_out); } else { LLVMValueRef cmpval00, cmpval01, cmpval10, cmpval11; cmpval00 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][0][0]); cmpval01 = lp_build_sample_comparefunc(bld, coords[4], neighbors[0][1][0]); cmpval10 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][0][0]); cmpval11 = lp_build_sample_comparefunc(bld, coords[4], neighbors[1][1][0]); colors1[0] = lp_build_masklerp2d(texel_bld, s_fpart, t_fpart, cmpval00, cmpval01, cmpval10, cmpval11); /* Linearly interpolate the two samples from the two 3D slices */ colors_out[0] = lp_build_lerp(texel_bld, r_fpart, colors0[0], colors1[0], 0); colors_out[1] = colors_out[2] = colors_out[3] = colors_out[0]; } } else { /* 2D tex */ for (unsigned chan = 0; chan < 4; chan++) { colors_out[chan] = colors0[chan]; } } } if (is_gather) { /* * For gather, we can't do our usual channel swizzling done later, * so do it here. It only really matters for 0/1 swizzles in case * of comparison filtering, since in this case the results would be * wrong, without comparison it should all work out alright but it * can't hurt to do that here, since it will instantly drop all * calculations above, though it's a rather stupid idea to do * gather on a channel which will always return 0 or 1 in any case... */ if (chan_swiz == PIPE_SWIZZLE_1) { for (unsigned chan = 0; chan < 4; chan++) { colors_out[chan] = texel_bld->one; } } else if (chan_swiz == PIPE_SWIZZLE_0) { for (unsigned chan = 0; chan < 4; chan++) { colors_out[chan] = texel_bld->zero; } } } } /** * Sample the texture/mipmap using given image filter and mip filter. * ilevel0 and ilevel1 indicate the two mipmap levels to sample * from (vectors or scalars). * If we're using nearest miplevel sampling the '1' values will be null/unused. */ static void lp_build_sample_mipmap(struct lp_build_sample_context *bld, unsigned img_filter, unsigned mip_filter, bool is_gather, const LLVMValueRef *coords, const LLVMValueRef *offsets, LLVMValueRef ilevel0, LLVMValueRef ilevel1, LLVMValueRef lod_fpart, LLVMValueRef *colors_out) { LLVMBuilderRef builder = bld->gallivm->builder; LLVMValueRef size0 = NULL; LLVMValueRef size1 = NULL; LLVMValueRef row_stride0_vec = NULL; LLVMValueRef row_stride1_vec = NULL; LLVMValueRef img_stride0_vec = NULL; LLVMValueRef img_stride1_vec = NULL; LLVMValueRef data_ptr0 = NULL; LLVMValueRef data_ptr1 = NULL; LLVMValueRef mipoff0 = NULL; LLVMValueRef mipoff1 = NULL; LLVMValueRef colors0[4], colors1[4]; /* sample the first mipmap level */ lp_build_mipmap_level_sizes(bld, ilevel0, &size0, &row_stride0_vec, &img_stride0_vec); if (bld->num_mips == 1) { data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0); } else { /* This path should work for num_lods 1 too but slightly less efficient */ data_ptr0 = bld->base_ptr; mipoff0 = lp_build_get_mip_offsets(bld, ilevel0); } if (img_filter == PIPE_TEX_FILTER_NEAREST) { lp_build_sample_image_nearest(bld, size0, row_stride0_vec, img_stride0_vec, data_ptr0, mipoff0, ilevel0, coords, offsets, colors0); } else { assert(img_filter == PIPE_TEX_FILTER_LINEAR); lp_build_sample_image_linear(bld, is_gather, size0, NULL, row_stride0_vec, img_stride0_vec, data_ptr0, mipoff0, ilevel0, coords, offsets, colors0); } /* Store the first level's colors in the output variables */ for (unsigned chan = 0; chan < 4; chan++) { LLVMBuildStore(builder, colors0[chan], colors_out[chan]); } if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { struct lp_build_if_state if_ctx; LLVMValueRef need_lerp; /* need_lerp = lod_fpart > 0 */ if (bld->num_lods == 1) { need_lerp = LLVMBuildFCmp(builder, LLVMRealUGT, lod_fpart, bld->lodf_bld.zero, "need_lerp"); } else { /* * We'll do mip filtering if any of the quads (or individual * pixel in case of per-pixel lod) need it. * It might be better to split the vectors here and only fetch/filter * quads which need it (if there's one lod per quad). */ need_lerp = lp_build_compare(bld->gallivm, bld->lodf_bld.type, PIPE_FUNC_GREATER, lod_fpart, bld->lodf_bld.zero); need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, need_lerp); lp_build_name(need_lerp, "need_lerp"); } lp_build_if(&if_ctx, bld->gallivm, need_lerp); { /* * We unfortunately need to clamp lod_fpart here since we can get * negative values which would screw up filtering if not all * lod_fpart values have same sign. */ lod_fpart = lp_build_max(&bld->lodf_bld, lod_fpart, bld->lodf_bld.zero); /* sample the second mipmap level */ lp_build_mipmap_level_sizes(bld, ilevel1, &size1, &row_stride1_vec, &img_stride1_vec); if (bld->num_mips == 1) { data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1); } else { data_ptr1 = bld->base_ptr; mipoff1 = lp_build_get_mip_offsets(bld, ilevel1); } if (img_filter == PIPE_TEX_FILTER_NEAREST) { lp_build_sample_image_nearest(bld, size1, row_stride1_vec, img_stride1_vec, data_ptr1, mipoff1, ilevel1, coords, offsets, colors1); } else { lp_build_sample_image_linear(bld, false, size1, NULL, row_stride1_vec, img_stride1_vec, data_ptr1, mipoff1, ilevel1, coords, offsets, colors1); } /* interpolate samples from the two mipmap levels */ if (bld->num_lods != bld->coord_type.length) lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, bld->lodf_bld.type, bld->texel_bld.type, lod_fpart); for (unsigned chan = 0; chan < 4; chan++) { colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart, colors0[chan], colors1[chan], 0); LLVMBuildStore(builder, colors0[chan], colors_out[chan]); } } lp_build_endif(&if_ctx); } } /** * Sample the texture/mipmap using given mip filter, and using * both nearest and linear filtering at the same time depending * on linear_mask. * lod can be per quad but linear_mask is always per pixel. * ilevel0 and ilevel1 indicate the two mipmap levels to sample * from (vectors or scalars). * If we're using nearest miplevel sampling the '1' values will be null/unused. */ static void lp_build_sample_mipmap_both(struct lp_build_sample_context *bld, LLVMValueRef linear_mask, unsigned mip_filter, const LLVMValueRef *coords, const LLVMValueRef *offsets, LLVMValueRef ilevel0, LLVMValueRef ilevel1, LLVMValueRef lod_fpart, LLVMValueRef lod_positive, LLVMValueRef *colors_out) { LLVMBuilderRef builder = bld->gallivm->builder; LLVMValueRef size0 = NULL; LLVMValueRef size1 = NULL; LLVMValueRef row_stride0_vec = NULL; LLVMValueRef row_stride1_vec = NULL; LLVMValueRef img_stride0_vec = NULL; LLVMValueRef img_stride1_vec = NULL; LLVMValueRef data_ptr0 = NULL; LLVMValueRef data_ptr1 = NULL; LLVMValueRef mipoff0 = NULL; LLVMValueRef mipoff1 = NULL; LLVMValueRef colors0[4], colors1[4]; /* sample the first mipmap level */ lp_build_mipmap_level_sizes(bld, ilevel0, &size0, &row_stride0_vec, &img_stride0_vec); if (bld->num_mips == 1) { data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0); } else { /* This path should work for num_lods 1 too but slightly less efficient */ data_ptr0 = bld->base_ptr; mipoff0 = lp_build_get_mip_offsets(bld, ilevel0); } lp_build_sample_image_linear(bld, false, size0, linear_mask, row_stride0_vec, img_stride0_vec, data_ptr0, mipoff0, ilevel0, coords, offsets, colors0); /* Store the first level's colors in the output variables */ for (unsigned chan = 0; chan < 4; chan++) { LLVMBuildStore(builder, colors0[chan], colors_out[chan]); } if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { struct lp_build_if_state if_ctx; LLVMValueRef need_lerp; /* * We'll do mip filtering if any of the quads (or individual * pixel in case of per-pixel lod) need it. * Note using lod_positive here not lod_fpart since it may be the same * condition as that used in the outer "if" in the caller hence llvm * should be able to merge the branches in this case. */ need_lerp = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, lod_positive); lp_build_name(need_lerp, "need_lerp"); lp_build_if(&if_ctx, bld->gallivm, need_lerp); { /* * We unfortunately need to clamp lod_fpart here since we can get * negative values which would screw up filtering if not all * lod_fpart values have same sign. */ lod_fpart = lp_build_max(&bld->lodf_bld, lod_fpart, bld->lodf_bld.zero); /* sample the second mipmap level */ lp_build_mipmap_level_sizes(bld, ilevel1, &size1, &row_stride1_vec, &img_stride1_vec); if (bld->num_mips == 1) { data_ptr1 = lp_build_get_mipmap_level(bld, ilevel1); } else { data_ptr1 = bld->base_ptr; mipoff1 = lp_build_get_mip_offsets(bld, ilevel1); } lp_build_sample_image_linear(bld, false, size1, linear_mask, row_stride1_vec, img_stride1_vec, data_ptr1, mipoff1, ilevel1, coords, offsets, colors1); /* interpolate samples from the two mipmap levels */ if (bld->num_lods != bld->coord_type.length) lod_fpart = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, bld->lodf_bld.type, bld->texel_bld.type, lod_fpart); for (unsigned chan = 0; chan < 4; chan++) { colors0[chan] = lp_build_lerp(&bld->texel_bld, lod_fpart, colors0[chan], colors1[chan], 0); LLVMBuildStore(builder, colors0[chan], colors_out[chan]); } } lp_build_endif(&if_ctx); } } /** * Build (per-coord) layer value. * Either clamp layer to valid values or fill in optional out_of_bounds * value and just return value unclamped. */ static LLVMValueRef lp_build_layer_coord(struct lp_build_sample_context *bld, unsigned texture_unit, bool is_cube_array, LLVMValueRef layer, LLVMValueRef *out_of_bounds) { LLVMValueRef num_layers; struct lp_build_context *int_coord_bld = &bld->int_coord_bld; num_layers = bld->dynamic_state->depth(bld->gallivm, bld->resources_type, bld->resources_ptr, texture_unit, NULL); num_layers = LLVMBuildZExt(bld->gallivm->builder, num_layers, bld->int_bld.elem_type, ""); if (out_of_bounds) { LLVMValueRef out1, out; assert(!is_cube_array); num_layers = lp_build_broadcast_scalar(int_coord_bld, num_layers); out = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, layer, int_coord_bld->zero); out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, layer, num_layers); *out_of_bounds = lp_build_or(int_coord_bld, out, out1); return layer; } else { LLVMValueRef maxlayer; LLVMValueRef s = is_cube_array ? lp_build_const_int32(bld->gallivm, 6) : bld->int_bld.one; maxlayer = lp_build_sub(&bld->int_bld, num_layers, s); maxlayer = lp_build_broadcast_scalar(int_coord_bld, maxlayer); return lp_build_clamp(int_coord_bld, layer, int_coord_bld->zero, maxlayer); } } static void lp_build_sample_ms_offset(struct lp_build_context *int_coord_bld, LLVMValueRef ms_index, LLVMValueRef num_samples, LLVMValueRef sample_stride, LLVMValueRef *offset, LLVMValueRef *out_of_bounds) { LLVMValueRef out1; num_samples = lp_build_broadcast_scalar(int_coord_bld, num_samples); sample_stride = lp_build_broadcast_scalar(int_coord_bld, sample_stride); out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, ms_index, int_coord_bld->zero); *out_of_bounds = lp_build_or(int_coord_bld, *out_of_bounds, out1); out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, ms_index, num_samples); *out_of_bounds = lp_build_or(int_coord_bld, *out_of_bounds, out1); LLVMValueRef sample_offset = lp_build_mul(int_coord_bld, sample_stride, ms_index); *offset = lp_build_add(int_coord_bld, *offset, sample_offset); } #define WEIGHT_LUT_SIZE 1024 static void lp_build_sample_aniso(struct lp_build_sample_context *bld, unsigned img_filter, unsigned mip_filter, bool is_gather, const LLVMValueRef *coords, const LLVMValueRef *offsets, LLVMValueRef ilevel0, LLVMValueRef ilevel1, LLVMValueRef lod_fpart, LLVMValueRef *colors_out) { struct gallivm_state *gallivm = bld->gallivm; LLVMBuilderRef builder = gallivm->builder; struct lp_build_context *coord_bld = &bld->coord_bld; struct lp_build_context *float_size_bld = &bld->float_size_in_bld; LLVMValueRef ddx_ddy = lp_build_packed_ddx_ddy_twocoord(&bld->coord_bld, coords[0], coords[1]); LLVMValueRef float_size; LLVMTypeRef i32t = LLVMInt32TypeInContext(gallivm->context); LLVMValueRef index0 = LLVMConstInt(i32t, 0, 0); LLVMValueRef index1 = LLVMConstInt(i32t, 1, 0); const unsigned length = bld->coord_bld.type.length; const unsigned num_quads = length / 4; LLVMValueRef filter_table = bld->aniso_filter_table; LLVMValueRef size0, row_stride0_vec, img_stride0_vec; LLVMValueRef data_ptr0, mipoff0 = NULL; lp_build_mipmap_level_sizes(bld, ilevel0, &size0, &row_stride0_vec, &img_stride0_vec); if (bld->num_mips == 1) { data_ptr0 = lp_build_get_mipmap_level(bld, ilevel0); } else { /* This path should work for num_lods 1 too but slightly less efficient */ data_ptr0 = bld->base_ptr; mipoff0 = lp_build_get_mip_offsets(bld, ilevel0); } float_size = lp_build_int_to_float(&bld->float_size_in_bld, bld->int_size); LLVMValueRef float_size_lvl = lp_build_int_to_float(&bld->float_size_bld, size0); /* extract width and height into vectors for use later */ static const unsigned char swizzle15[] = { /* no-op swizzle */ 1, 1, 1, 1, 5, 5, 5, 5 }; static const unsigned char swizzle04[] = { /* no-op swizzle */ 0, 0, 0, 0, 4, 4, 4, 4 }; LLVMValueRef width_dim, height_dim; width_dim = lp_build_swizzle_aos_n(gallivm, float_size_lvl, swizzle04, bld->float_size_bld.type.length, bld->coord_bld.type.length); height_dim = lp_build_swizzle_aos_n(gallivm, float_size_lvl, swizzle15, bld->float_size_bld.type.length, bld->coord_bld.type.length); /* shuffle width/height for ddx/ddy calculations. */ LLVMValueRef shuffles[LP_MAX_VECTOR_LENGTH / 4]; for (unsigned i = 0; i < num_quads; i++) { shuffles[i*4+0] = shuffles[i*4+1] = index0; shuffles[i*4+2] = shuffles[i*4+3] = index1; } LLVMValueRef floatdim = LLVMBuildShuffleVector(builder, float_size, float_size, LLVMConstVector(shuffles, length), ""); ddx_ddy = lp_build_mul(coord_bld, ddx_ddy, floatdim); LLVMValueRef scaling = lp_build_shl(&bld->leveli_bld, bld->leveli_bld.one, ilevel0); scaling = lp_build_int_to_float(&bld->levelf_bld, scaling); scaling = lp_build_rcp(&bld->levelf_bld, scaling); if (bld->levelf_bld.type.length != length) { if (bld->levelf_bld.type.length == 1) { scaling = lp_build_broadcast_scalar(coord_bld, scaling); } else { scaling = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, bld->levelf_bld.type, coord_bld->type, scaling); } } ddx_ddy = lp_build_mul(coord_bld, ddx_ddy, scaling); static const unsigned char swizzle01[] = { /* no-op swizzle */ 0, 1, 0, 1, }; static const unsigned char swizzle23[] = { 2, 3, 2, 3, }; LLVMValueRef ddx_ddys, ddx_ddyt; ddx_ddys = lp_build_swizzle_aos(coord_bld, ddx_ddy, swizzle01); ddx_ddyt = lp_build_swizzle_aos(coord_bld, ddx_ddy, swizzle23); /* compute ellipse coefficients */ /* * A*x*x + B*x*y + C*y*y = F.*/ /* float A = vx*vx+vy*vy+1; */ LLVMValueRef A = lp_build_mul(coord_bld, ddx_ddyt, ddx_ddyt); LLVMValueRef Ay = lp_build_swizzle_aos(coord_bld, A, swizzle15); A = lp_build_add(coord_bld, A, Ay); A = lp_build_add(coord_bld, A, coord_bld->one); A = lp_build_swizzle_aos(coord_bld, A, swizzle04); /* float B = -2*(ux*vx+uy*vy); */ LLVMValueRef B = lp_build_mul(coord_bld, ddx_ddys, ddx_ddyt); LLVMValueRef By = lp_build_swizzle_aos(coord_bld, B, swizzle15); B = lp_build_add(coord_bld, B, By); B = lp_build_mul_imm(coord_bld, B, -2); B = lp_build_swizzle_aos(coord_bld, B, swizzle04); /* float C = ux*ux+uy*uy+1; */ LLVMValueRef C = lp_build_mul(coord_bld, ddx_ddys, ddx_ddys); LLVMValueRef Cy = lp_build_swizzle_aos(coord_bld, C, swizzle15); C = lp_build_add(coord_bld, C, Cy); C = lp_build_add(coord_bld, C, coord_bld->one); C = lp_build_swizzle_aos(coord_bld, C, swizzle04); /* float F = A*C-B*B/4.0f; */ LLVMValueRef F = lp_build_mul(coord_bld, B, B); F = lp_build_div(coord_bld, F, lp_build_const_vec(gallivm, coord_bld->type, 4.0)); LLVMValueRef F_p2 = lp_build_mul(coord_bld, A, C); F = lp_build_sub(coord_bld, F_p2, F); /* compute ellipse bounding box in texture space */ /* const float d = -B*B+4.0f*C*A; */ LLVMValueRef d = lp_build_sub(coord_bld, coord_bld->zero, lp_build_mul(coord_bld, B, B)); LLVMValueRef d_p2 = lp_build_mul(coord_bld, A, C); d_p2 = lp_build_mul_imm(coord_bld, d_p2, 4); d = lp_build_add(coord_bld, d, d_p2); /* const float box_u = 2.0f / d * sqrtf(d*C*F); */ /* box_u -> half of bbox with */ LLVMValueRef temp; temp = lp_build_mul(coord_bld, d, C); temp = lp_build_mul(coord_bld, temp, F); temp = lp_build_sqrt(coord_bld, temp); LLVMValueRef box_u = lp_build_div(coord_bld, lp_build_const_vec(gallivm, coord_bld->type, 2.0), d); box_u = lp_build_mul(coord_bld, box_u, temp); /* const float box_v = 2.0f / d * sqrtf(A*d*F); */ /* box_v -> half of bbox height */ temp = lp_build_mul(coord_bld, A, d); temp = lp_build_mul(coord_bld, temp, F); temp = lp_build_sqrt(coord_bld, temp); LLVMValueRef box_v = lp_build_div(coord_bld, lp_build_const_vec(gallivm, coord_bld->type, 2.0), d); box_v = lp_build_mul(coord_bld, box_v, temp); /* Scale ellipse formula to directly index the Filter Lookup Table. * i.e. scale so that F = WEIGHT_LUT_SIZE-1 */ LLVMValueRef formScale = lp_build_div(coord_bld, lp_build_const_vec(gallivm, coord_bld->type, WEIGHT_LUT_SIZE - 1), F); A = lp_build_mul(coord_bld, A, formScale); B = lp_build_mul(coord_bld, B, formScale); C = lp_build_mul(coord_bld, C, formScale); /* F *= formScale; */ /* no need to scale F as we don't use it below here */ LLVMValueRef ddq = lp_build_mul_imm(coord_bld, A, 2); /* Heckbert MS thesis, p. 59; scan over the bounding box of the ellipse * and incrementally update the value of Ax^2+Bxy*Cy^2; when this * value, q, is less than F, we're inside the ellipse */ LLVMValueRef float_size0 = lp_build_int_to_float(float_size_bld, bld->int_size); LLVMValueRef width0 = lp_build_extract_broadcast(gallivm, float_size_bld->type, coord_bld->type, float_size0, index0); LLVMValueRef height0 = lp_build_extract_broadcast(gallivm, float_size_bld->type, coord_bld->type, float_size0, index1); /* texture->width0 * scaling */ width0 = lp_build_mul(coord_bld, width0, scaling); /* texture->height0 * scaling */ height0 = lp_build_mul(coord_bld, height0, scaling); /* tex_u = -0.5f * s[j] * texture->width0 * scaling */ LLVMValueRef tex_u = lp_build_mul(coord_bld, coords[0], width0); tex_u = lp_build_add(coord_bld, tex_u, lp_build_const_vec(gallivm, coord_bld->type, -0.5f)); /* tex_v = -0.5f * t[j] * texture->height0 * scaling */ LLVMValueRef tex_v = lp_build_mul(coord_bld, coords[1], height0); tex_v = lp_build_add(coord_bld, tex_v, lp_build_const_vec(gallivm, coord_bld->type, -0.5f)); /* const int u0 = (int) floorf(tex_u - box_u); */ LLVMValueRef u0 = lp_build_itrunc(coord_bld, lp_build_floor(coord_bld, lp_build_sub(coord_bld, tex_u, box_u))); /* const int u1 = (int) ceilf(tex_u + box_u); */ LLVMValueRef u1 = lp_build_itrunc(coord_bld, lp_build_ceil(coord_bld, lp_build_add(coord_bld, tex_u, box_u))); /* const int v0 = (int) floorf(tex_v - box_v); */ LLVMValueRef v0 = lp_build_itrunc(coord_bld, lp_build_floor(coord_bld, lp_build_sub(coord_bld, tex_v, box_v))); /* const int v1 = (int) ceilf(tex_v + box_v); */ LLVMValueRef v1 = lp_build_itrunc(coord_bld, lp_build_ceil(coord_bld, lp_build_add(coord_bld, tex_v, box_v))); /* const float U = u0 - tex_u; */ LLVMValueRef U = lp_build_sub(coord_bld, lp_build_int_to_float(coord_bld, u0), tex_u); /* A * (2 * U + 1) */ LLVMValueRef dq_base = lp_build_mul_imm(coord_bld, U, 2); dq_base = lp_build_add(coord_bld, dq_base, coord_bld->one); dq_base = lp_build_mul(coord_bld, dq_base, A); /* A * U * U */ LLVMValueRef q_base = lp_build_mul(coord_bld, U, U); q_base = lp_build_mul(coord_bld, q_base, A); LLVMValueRef colors0[4]; LLVMValueRef den_store = lp_build_alloca(gallivm, bld->texel_bld.vec_type, "den"); for (unsigned chan = 0; chan < 4; chan++) colors0[chan] = lp_build_alloca(gallivm, bld->texel_bld.vec_type, "colors"); LLVMValueRef q_store, dq_store; q_store = lp_build_alloca(gallivm, bld->coord_bld.vec_type, "q"); dq_store = lp_build_alloca(gallivm, bld->coord_bld.vec_type, "dq"); LLVMValueRef v_limiter = lp_build_alloca(gallivm, bld->int_coord_bld.vec_type, "v_limiter"); LLVMValueRef u_limiter = lp_build_alloca(gallivm, bld->int_coord_bld.vec_type, "u_limiter"); LLVMBuildStore(builder, v0, v_limiter); /* create an LLVM loop block for the V iterator */ LLVMBasicBlockRef v_loop_block = lp_build_insert_new_block(gallivm, "vloop"); LLVMBuildBr(builder, v_loop_block); LLVMPositionBuilderAtEnd(builder, v_loop_block); LLVMValueRef v_val = LLVMBuildLoad2(builder, bld->int_coord_bld.vec_type, v_limiter, ""); LLVMValueRef v_mask = LLVMBuildICmp(builder, LLVMIntSLE, v_val, v1, ""); /* loop over V values. */ { /* const float V = v - tex_v; */ LLVMValueRef V = lp_build_sub(coord_bld, lp_build_int_to_float(coord_bld, v_val), tex_v); /* float dq = dq_base + B * V; */ LLVMValueRef dq = lp_build_mul(coord_bld, V, B); dq = lp_build_add(coord_bld, dq, dq_base); /* float q = (C * V + B * U) * V + q_base */ LLVMValueRef q = lp_build_mul(coord_bld, C, V); q = lp_build_add(coord_bld, q, lp_build_mul(coord_bld, B, U)); q = lp_build_mul(coord_bld, q, V); q = lp_build_add(coord_bld, q, q_base); LLVMBuildStore(builder, q, q_store); LLVMBuildStore(builder, dq, dq_store); LLVMBuildStore(builder, u0, u_limiter); /* create an LLVM loop block for the V iterator */ LLVMBasicBlockRef u_loop_block = lp_build_insert_new_block(gallivm, "uloop"); LLVMBuildBr(builder, u_loop_block); LLVMPositionBuilderAtEnd(builder, u_loop_block); LLVMValueRef u_val = LLVMBuildLoad2(builder, bld->int_coord_bld.vec_type, u_limiter, ""); LLVMValueRef u_mask = LLVMBuildICmp(builder, LLVMIntSLE, u_val, u1, ""); /* loop over U values */ { /* q = (int)q */ q = lp_build_itrunc(coord_bld, LLVMBuildLoad2(builder, bld->coord_bld.vec_type, q_store, "")); /* * avoid OOB access to filter table, generate a mask for q > 1024, * then truncate it. */ LLVMValueRef q_mask = LLVMBuildICmp(builder, LLVMIntSLE, q, lp_build_const_int_vec(gallivm, bld->int_coord_bld.type, 0x3ff), ""); q_mask = LLVMBuildSExt(builder, q_mask, bld->int_coord_bld.vec_type, ""); q = lp_build_max(&bld->int_coord_bld, q, bld->int_coord_bld.zero); q = lp_build_and(&bld->int_coord_bld, q, lp_build_const_int_vec(gallivm, bld->int_coord_bld.type, 0x3ff)); /* update the offsets to deal with float size. */ q = lp_build_mul_imm(&bld->int_coord_bld, q, 4); filter_table = LLVMBuildBitCast(gallivm->builder, filter_table, LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0), ""); /* Lookup weights in filter table */ LLVMValueRef weights = lp_build_gather(gallivm, coord_bld->type.length, coord_bld->type.width, lp_elem_type(coord_bld->type), true, filter_table, q, true); /* * Mask off the weights here which should ensure no-op for loops * where some of the u/v values are not being calculated. */ weights = LLVMBuildBitCast(builder, weights, bld->int_coord_bld.vec_type, ""); weights = lp_build_and(&bld->int_coord_bld, weights, LLVMBuildSExt(builder, u_mask, bld->int_coord_bld.vec_type, "")); weights = lp_build_and(&bld->int_coord_bld, weights, LLVMBuildSExt(builder, v_mask, bld->int_coord_bld.vec_type, "")); weights = lp_build_and(&bld->int_coord_bld, weights, q_mask); weights = LLVMBuildBitCast(builder, weights, bld->coord_bld.vec_type, ""); /* if the weights are all 0 avoid doing the sampling at all. */ struct lp_build_if_state noloadw0; LLVMValueRef wnz = LLVMBuildFCmp(gallivm->builder, LLVMRealUNE, weights, bld->coord_bld.zero, ""); wnz = LLVMBuildSExt(builder, wnz, bld->int_coord_bld.vec_type, ""); wnz = lp_build_any_true_range(&bld->coord_bld, bld->coord_bld.type.length, wnz); lp_build_if(&noloadw0, gallivm, wnz); LLVMValueRef new_coords[4]; new_coords[0] = lp_build_div(coord_bld, lp_build_int_to_float(coord_bld, u_val), width_dim); new_coords[1] = lp_build_div(coord_bld, lp_build_int_to_float(coord_bld, v_val), height_dim); new_coords[2] = coords[2]; new_coords[3] = coords[3]; /* lookup q in filter table */ LLVMValueRef temp_colors[4]; lp_build_sample_image_nearest(bld, size0, row_stride0_vec, img_stride0_vec, data_ptr0, mipoff0, ilevel0, new_coords, offsets, temp_colors); for (unsigned chan = 0; chan < 4; chan++) { LLVMValueRef tcolor = LLVMBuildLoad2(builder, bld->texel_bld.vec_type, colors0[chan], ""); tcolor = lp_build_add(&bld->texel_bld, tcolor, lp_build_mul(&bld->texel_bld, temp_colors[chan], weights)); LLVMBuildStore(builder, tcolor, colors0[chan]); } /* multiple colors by weight and add in. */ /* den += weight; */ LLVMValueRef den = LLVMBuildLoad2(builder, bld->texel_bld.vec_type, den_store, ""); den = lp_build_add(&bld->texel_bld, den, weights); LLVMBuildStore(builder, den, den_store); lp_build_endif(&noloadw0); /* q += dq; */ /* dq += ddq; */ q = LLVMBuildLoad2(builder, bld->texel_bld.vec_type, q_store, ""); dq = LLVMBuildLoad2(builder, bld->texel_bld.vec_type, dq_store, ""); q = lp_build_add(coord_bld, q, dq); dq = lp_build_add(coord_bld, dq, ddq); LLVMBuildStore(builder, q, q_store); LLVMBuildStore(builder, dq, dq_store); } /* u += 1 */ u_val = LLVMBuildLoad2(builder, bld->int_coord_bld.vec_type, u_limiter, ""); u_val = lp_build_add(&bld->int_coord_bld, u_val, bld->int_coord_bld.one); LLVMBuildStore(builder, u_val, u_limiter); u_mask = LLVMBuildICmp(builder, LLVMIntSLE, u_val, u1, ""); LLVMValueRef u_end_cond = LLVMBuildSExt(builder, u_mask, bld->int_coord_bld.vec_type, ""); u_end_cond = lp_build_any_true_range(&bld->coord_bld, bld->coord_bld.type.length, u_end_cond); LLVMBasicBlockRef u_end_loop = lp_build_insert_new_block(gallivm, "u_end_loop"); LLVMBuildCondBr(builder, u_end_cond, u_loop_block, u_end_loop); LLVMPositionBuilderAtEnd(builder, u_end_loop); } /* v += 1 */ v_val = LLVMBuildLoad2(builder, bld->int_coord_bld.vec_type, v_limiter, ""); v_val = lp_build_add(&bld->int_coord_bld, v_val, bld->int_coord_bld.one); LLVMBuildStore(builder, v_val, v_limiter); v_mask = LLVMBuildICmp(builder, LLVMIntSLE, v_val, v1, ""); LLVMValueRef v_end_cond = LLVMBuildSExt(builder, v_mask, bld->int_coord_bld.vec_type, ""); v_end_cond = lp_build_any_true_range(&bld->coord_bld, bld->coord_bld.type.length, v_end_cond); LLVMBasicBlockRef v_end_loop = lp_build_insert_new_block(gallivm, "v_end_loop"); LLVMBuildCondBr(builder, v_end_cond, v_loop_block, v_end_loop); LLVMPositionBuilderAtEnd(builder, v_end_loop); LLVMValueRef den = LLVMBuildLoad2(builder, bld->texel_bld.vec_type, den_store, ""); for (unsigned chan = 0; chan < 4; chan++) { colors0[chan] = lp_build_div(&bld->texel_bld, LLVMBuildLoad2(builder, bld->texel_bld.vec_type, colors0[chan], ""), den); } LLVMValueRef den0 = lp_build_cmp(&bld->coord_bld, PIPE_FUNC_EQUAL, den, bld->coord_bld.zero); LLVMValueRef den0_any = lp_build_any_true_range(&bld->coord_bld, bld->coord_bld.type.length, den0); struct lp_build_if_state den0_fallback; lp_build_if(&den0_fallback, gallivm, den0_any); { LLVMValueRef colors_den0[4]; lp_build_sample_image_linear(bld, false, size0, NULL, row_stride0_vec, img_stride0_vec, data_ptr0, mipoff0, ilevel0, coords, offsets, colors_den0); for (unsigned chan = 0; chan < 4; chan++) { LLVMValueRef chan_val = lp_build_select(&bld->texel_bld, den0, colors_den0[chan], colors0[chan]); LLVMBuildStore(builder, chan_val, colors_out[chan]); } } lp_build_else(&den0_fallback); { for (unsigned chan = 0; chan < 4; chan++) { LLVMBuildStore(builder, colors0[chan], colors_out[chan]); } } lp_build_endif(&den0_fallback); } /** * Calculate cube face, lod, mip levels. */ static void lp_build_sample_common(struct lp_build_sample_context *bld, bool is_lodq, unsigned texture_index, unsigned sampler_index, LLVMValueRef *coords, const struct lp_derivatives *derivs, /* optional */ LLVMValueRef lod_bias, /* optional */ LLVMValueRef explicit_lod, /* optional */ LLVMValueRef *lod_pos_or_zero, LLVMValueRef *lod, LLVMValueRef *lod_fpart, LLVMValueRef *ilevel0, LLVMValueRef *ilevel1) { const unsigned mip_filter = bld->static_sampler_state->min_mip_filter; const unsigned min_filter = bld->static_sampler_state->min_img_filter; const unsigned mag_filter = bld->static_sampler_state->mag_img_filter; const unsigned target = bld->static_texture_state->target; const bool aniso = bld->static_sampler_state->aniso; LLVMValueRef first_level, last_level; LLVMValueRef lod_ipart = NULL; struct lp_derivatives cube_derivs; /* printf("%s mip %d min %d mag %d\n", __func__, mip_filter, min_filter, mag_filter); */ first_level = get_first_level(bld->gallivm, bld->resources_type, bld->resources_ptr, texture_index, NULL, bld->static_texture_state, bld->dynamic_state); last_level = get_last_level(bld->gallivm, bld->resources_type, bld->resources_ptr, texture_index, NULL, bld->static_texture_state, bld->dynamic_state); /* * Choose cube face, recompute texcoords for the chosen face and * calculate / transform derivatives. */ if (target == PIPE_TEXTURE_CUBE || target == PIPE_TEXTURE_CUBE_ARRAY) { bool need_derivs = ((min_filter != mag_filter || mip_filter != PIPE_TEX_MIPFILTER_NONE) && !bld->static_sampler_state->min_max_lod_equal && !explicit_lod); lp_build_cube_lookup(bld, coords, derivs, &cube_derivs, need_derivs); if (need_derivs) derivs = &cube_derivs; if (target == PIPE_TEXTURE_CUBE_ARRAY && !is_lodq) { /* calculate cube layer coord now */ LLVMValueRef layer = lp_build_iround(&bld->coord_bld, coords[3]); LLVMValueRef six = lp_build_const_int_vec(bld->gallivm, bld->int_coord_type, 6); layer = lp_build_mul(&bld->int_coord_bld, layer, six); coords[3] = lp_build_layer_coord(bld, texture_index, true, layer, NULL); /* because of seamless filtering can't add it to face (coords[2]) here. */ } } else if ((target == PIPE_TEXTURE_1D_ARRAY || target == PIPE_TEXTURE_2D_ARRAY) && !is_lodq) { coords[2] = lp_build_iround(&bld->coord_bld, coords[2]); coords[2] = lp_build_layer_coord(bld, texture_index, false, coords[2], NULL); } if (bld->static_sampler_state->compare_mode != PIPE_TEX_COMPARE_NONE) { /* * Clamp p coords to [0,1] for fixed function depth texture format here. * Technically this is not entirely correct for unorm depth as the ref * value should be converted to the depth format (quantization!) and * comparison then done in texture format. This would actually help * performance (since only need to do it once and could save the * per-sample conversion of texels to floats instead), but it would need * more messy code (would need to push at least some bits down to actual * fetch so conversion could be skipped, and would have ugly interaction * with border color, would need to convert border color to that format * too or do some other tricks to make it work). */ const struct util_format_description *format_desc = bld->format_desc; /* not entirely sure we couldn't end up with non-valid swizzle here */ const enum util_format_type chan_type = format_desc->swizzle[0] <= PIPE_SWIZZLE_W ? format_desc->channel[format_desc->swizzle[0]].type : UTIL_FORMAT_TYPE_FLOAT; if (chan_type != UTIL_FORMAT_TYPE_FLOAT) { coords[4] = lp_build_clamp(&bld->coord_bld, coords[4], bld->coord_bld.zero, bld->coord_bld.one); } } /* * Compute the level of detail (float). */ if (min_filter != mag_filter || mip_filter != PIPE_TEX_MIPFILTER_NONE || is_lodq) { LLVMValueRef max_aniso = NULL; if (aniso) max_aniso = bld->dynamic_state->max_aniso(bld->gallivm, bld->resources_type, bld->resources_ptr, sampler_index); /* Need to compute lod either to choose mipmap levels or to * distinguish between minification/magnification with one mipmap level. */ LLVMValueRef first_level_vec = lp_build_broadcast_scalar(&bld->int_size_in_bld, first_level); lp_build_lod_selector(bld, is_lodq, sampler_index, first_level_vec, coords[0], coords[1], coords[2], derivs, lod_bias, explicit_lod, mip_filter, max_aniso, lod, &lod_ipart, lod_fpart, lod_pos_or_zero); if (is_lodq) { last_level = lp_build_sub(&bld->int_bld, last_level, first_level); last_level = lp_build_int_to_float(&bld->float_bld, last_level); last_level = lp_build_broadcast_scalar(&bld->lodf_bld, last_level); switch (mip_filter) { case PIPE_TEX_MIPFILTER_NONE: *lod_fpart = bld->lodf_bld.zero; break; case PIPE_TEX_MIPFILTER_NEAREST: *lod_fpart = lp_build_round(&bld->lodf_bld, *lod_fpart); FALLTHROUGH; case PIPE_TEX_MIPFILTER_LINEAR: *lod_fpart = lp_build_clamp(&bld->lodf_bld, *lod_fpart, bld->lodf_bld.zero, last_level); break; } return; } } else { lod_ipart = bld->lodi_bld.zero; *lod_pos_or_zero = bld->lodi_bld.zero; } if ((bld->num_lods != bld->num_mips || bld->num_lods == 1) && bld->lodi_bld.type.length != 1) { /* only makes sense if there's just a single mip level */ assert(bld->num_mips == 1); lod_ipart = lp_build_extract_range(bld->gallivm, lod_ipart, 0, 1); } first_level = lp_build_broadcast_scalar(&bld->leveli_bld, first_level); last_level = lp_build_broadcast_scalar(&bld->leveli_bld, last_level); /* * Compute integer mipmap level(s) to fetch texels from: ilevel0, ilevel1 */ if (aniso) { lp_build_nearest_mip_level(bld, first_level, last_level, lod_ipart, ilevel0, NULL); return; } switch (mip_filter) { default: unreachable("Bad mip_filter value in lp_build_sample_soa()"); case PIPE_TEX_MIPFILTER_NONE: /* always use mip level 0 */ *ilevel0 = first_level; break; case PIPE_TEX_MIPFILTER_NEAREST: assert(lod_ipart); lp_build_nearest_mip_level(bld, first_level, last_level, lod_ipart, ilevel0, NULL); break; case PIPE_TEX_MIPFILTER_LINEAR: assert(lod_ipart); assert(*lod_fpart); lp_build_linear_mip_levels(bld, texture_index, first_level, last_level, lod_ipart, lod_fpart, ilevel0, ilevel1); break; } } static void lp_build_clamp_border_color(struct lp_build_sample_context *bld, unsigned sampler_unit) { struct gallivm_state *gallivm = bld->gallivm; LLVMBuilderRef builder = gallivm->builder; LLVMValueRef border_color_ptr = bld->dynamic_state->border_color(gallivm, bld->resources_type, bld->resources_ptr, sampler_unit); LLVMValueRef border_color; const struct util_format_description *format_desc = bld->format_desc; struct lp_type vec4_type = bld->texel_type; struct lp_build_context vec4_bld; LLVMValueRef min_clamp = NULL; LLVMValueRef max_clamp = NULL; /* * For normalized format need to clamp border color (technically * probably should also quantize the data). Really sucks doing this * here but can't avoid at least for now since this is part of * sampler state and texture format is part of sampler_view state. * GL expects also expects clamping for uint/sint formats too so * do that as well (d3d10 can't end up here with uint/sint since it * only supports them with ld). */ vec4_type.length = 4; lp_build_context_init(&vec4_bld, gallivm, vec4_type); /* * Vectorized clamping of border color. Loading is a bit of a hack since * we just cast the pointer to float array to pointer to vec4 * (int or float). */ LLVMTypeRef border_color_type = LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4); border_color_ptr = lp_build_array_get_ptr2(gallivm, border_color_type, border_color_ptr, lp_build_const_int32(gallivm, 0)); border_color_ptr = LLVMBuildBitCast(builder, border_color_ptr, LLVMPointerType(vec4_bld.vec_type, 0), ""); border_color = LLVMBuildLoad2(builder, vec4_bld.vec_type, border_color_ptr, ""); /* we don't have aligned type in the dynamic state unfortunately */ LLVMSetAlignment(border_color, 4); /* * Instead of having some incredibly complex logic which will try to figure * out clamping necessary for each channel, simply use the first channel, * and treat mixed signed/unsigned normalized formats specially. (Mixed * non-normalized, which wouldn't work at all here, do not exist for a good * reason.) */ if (format_desc->layout == UTIL_FORMAT_LAYOUT_PLAIN) { int chan; /* d/s needs special handling because both present means just sampling depth */ if (util_format_is_depth_and_stencil(format_desc->format)) { chan = format_desc->swizzle[0]; } else { chan = util_format_get_first_non_void_channel(format_desc->format); } if (chan >= 0 && chan <= PIPE_SWIZZLE_W) { unsigned chan_type = format_desc->channel[chan].type; unsigned chan_norm = format_desc->channel[chan].normalized; unsigned chan_pure = format_desc->channel[chan].pure_integer; if (chan_type == UTIL_FORMAT_TYPE_SIGNED) { if (chan_norm) { min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F); max_clamp = vec4_bld.one; } else if (chan_pure) { /* * Border color was stored as int, hence need min/max clamp * only if chan has less than 32 bits.. */ unsigned chan_size = format_desc->channel[chan].size; if (chan_size < 32) { min_clamp = lp_build_const_int_vec(gallivm, vec4_type, 0 - (1 << (chan_size - 1))); max_clamp = lp_build_const_int_vec(gallivm, vec4_type, (1 << (chan_size - 1)) - 1); } } /* TODO: no idea about non-pure, non-normalized! */ } else if (chan_type == UTIL_FORMAT_TYPE_UNSIGNED) { if (chan_norm) { min_clamp = vec4_bld.zero; max_clamp = vec4_bld.one; } else if (chan_pure) { /* * Need a ugly hack here, because we don't have Z32_FLOAT_X8X24 * we use Z32_FLOAT_S8X24 to imply sampling depth component and * ignoring stencil, which will blow up here if we try to do a * uint clamp in a float texel build... And even if we had * that format, mesa st also thinks using z24s8 means depth * sampling ignoring stencil. */ /* * Border color was stored as uint, hence never need min clamp, * and only need max clamp if chan has less than 32 bits. */ unsigned chan_size = format_desc->channel[chan].size; if (chan_size < 32) { max_clamp = lp_build_const_int_vec(gallivm, vec4_type, (1 << chan_size) - 1); } /* TODO: no idea about non-pure, non-normalized! */ } } else if (chan_type == UTIL_FORMAT_TYPE_FIXED) { /* TODO: I have no idea what clamp this would need if any! */ } } /* mixed plain formats (or different pure size) */ switch (format_desc->format) { case PIPE_FORMAT_B10G10R10A2_UINT: case PIPE_FORMAT_R10G10B10A2_UINT: { unsigned max10 = (1 << 10) - 1; max_clamp = lp_build_const_aos(gallivm, vec4_type, max10, max10, max10, (1 << 2) - 1, NULL); } break; case PIPE_FORMAT_R10SG10SB10SA2U_NORM: min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F, -1.0F, 0.0F, NULL); max_clamp = vec4_bld.one; break; case PIPE_FORMAT_R8SG8SB8UX8U_NORM: case PIPE_FORMAT_R5SG5SB6U_NORM: min_clamp = lp_build_const_aos(gallivm, vec4_type, -1.0F, -1.0F, 0.0F, 0.0F, NULL); max_clamp = vec4_bld.one; break; default: break; } } else { /* cannot figure this out from format description */ if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) { /* s3tc formats are always unorm */ min_clamp = vec4_bld.zero; max_clamp = vec4_bld.one; } else if (format_desc->layout == UTIL_FORMAT_LAYOUT_RGTC || format_desc->layout == UTIL_FORMAT_LAYOUT_ETC || format_desc->layout == UTIL_FORMAT_LAYOUT_BPTC) { switch (format_desc->format) { case PIPE_FORMAT_RGTC1_UNORM: case PIPE_FORMAT_RGTC2_UNORM: case PIPE_FORMAT_LATC1_UNORM: case PIPE_FORMAT_LATC2_UNORM: case PIPE_FORMAT_ETC1_RGB8: case PIPE_FORMAT_BPTC_RGBA_UNORM: case PIPE_FORMAT_BPTC_SRGBA: min_clamp = vec4_bld.zero; max_clamp = vec4_bld.one; break; case PIPE_FORMAT_RGTC1_SNORM: case PIPE_FORMAT_RGTC2_SNORM: case PIPE_FORMAT_LATC1_SNORM: case PIPE_FORMAT_LATC2_SNORM: min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F); max_clamp = vec4_bld.one; break; case PIPE_FORMAT_BPTC_RGB_FLOAT: /* not sure if we should clamp to max half float? */ break; case PIPE_FORMAT_BPTC_RGB_UFLOAT: min_clamp = vec4_bld.zero; break; default: assert(0); break; } } else if (format_desc->colorspace != UTIL_FORMAT_COLORSPACE_YUV){ /* * all others from subsampled/other group, though we don't care * about yuv (and should not have any from zs here) */ switch (format_desc->format) { case PIPE_FORMAT_R8G8_B8G8_UNORM: case PIPE_FORMAT_G8R8_G8B8_UNORM: case PIPE_FORMAT_G8R8_B8R8_UNORM: case PIPE_FORMAT_R8G8_R8B8_UNORM: case PIPE_FORMAT_G8B8_G8R8_UNORM: case PIPE_FORMAT_B8G8_R8G8_UNORM: case PIPE_FORMAT_R1_UNORM: /* doesn't make sense but ah well */ min_clamp = vec4_bld.zero; max_clamp = vec4_bld.one; break; case PIPE_FORMAT_R8G8Bx_SNORM: min_clamp = lp_build_const_vec(gallivm, vec4_type, -1.0F); max_clamp = vec4_bld.one; break; /* * Note smallfloat formats usually don't need clamping * (they still have infinite range) however this is not * true for r11g11b10 and r9g9b9e5, which can't represent * negative numbers (and additionally r9g9b9e5 can't represent * very large numbers). d3d10 seems happy without clamping in * this case, but gl spec is pretty clear: "for floating * point and integer formats, border values are clamped to * the representable range of the format" so do that here. */ case PIPE_FORMAT_R11G11B10_FLOAT: min_clamp = vec4_bld.zero; break; case PIPE_FORMAT_R9G9B9E5_FLOAT: min_clamp = vec4_bld.zero; max_clamp = lp_build_const_vec(gallivm, vec4_type, MAX_RGB9E5); break; default: assert(0); break; } } } if (min_clamp) { border_color = lp_build_max(&vec4_bld, border_color, min_clamp); } if (max_clamp) { border_color = lp_build_min(&vec4_bld, border_color, max_clamp); } bld->border_color_clamped = border_color; } /** * General texture sampling codegen. * This function handles texture sampling for all texture targets (1D, * 2D, 3D, cube) and all filtering modes. */ static void lp_build_sample_general(struct lp_build_sample_context *bld, unsigned sampler_unit, bool is_gather, const LLVMValueRef *coords, const LLVMValueRef *offsets, LLVMValueRef lod_positive, LLVMValueRef lod_fpart, LLVMValueRef ilevel0, LLVMValueRef ilevel1, LLVMValueRef *colors_out) { LLVMBuilderRef builder = bld->gallivm->builder; const struct lp_static_sampler_state *sampler_state = bld->static_sampler_state; const unsigned mip_filter = sampler_state->min_mip_filter; const unsigned min_filter = sampler_state->min_img_filter; const unsigned mag_filter = sampler_state->mag_img_filter; LLVMValueRef texels[4]; unsigned chan; /* if we need border color, (potentially) clamp it now */ if (lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_s, min_filter, mag_filter) || (bld->dims > 1 && lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_t, min_filter, mag_filter)) || (bld->dims > 2 && lp_sampler_wrap_mode_uses_border_color(sampler_state->wrap_r, min_filter, mag_filter))) { lp_build_clamp_border_color(bld, sampler_unit); } /* * Get/interpolate texture colors. */ for (chan = 0; chan < 4; ++chan) { texels[chan] = lp_build_alloca(bld->gallivm, bld->texel_bld.vec_type, ""); lp_build_name(texels[chan], "sampler%u_texel_%c_var", sampler_unit, "xyzw"[chan]); } if (sampler_state->aniso) { lp_build_sample_aniso(bld, PIPE_TEX_FILTER_NEAREST, mip_filter, false, coords, offsets, ilevel0, ilevel1, lod_fpart, texels); } else if (min_filter == mag_filter) { /* no need to distinguish between minification and magnification */ lp_build_sample_mipmap(bld, min_filter, mip_filter, is_gather, coords, offsets, ilevel0, ilevel1, lod_fpart, texels); } else { /* * Could also get rid of the if-logic and always use mipmap_both, both * for the single lod and multi-lod case if nothing really uses this. */ if (bld->num_lods == 1) { /* Emit conditional to choose min image filter or mag image filter * depending on the lod being > 0 or <= 0, respectively. */ struct lp_build_if_state if_ctx; lod_positive = LLVMBuildTrunc(builder, lod_positive, LLVMInt1TypeInContext(bld->gallivm->context), "lod_pos"); lp_build_if(&if_ctx, bld->gallivm, lod_positive); { /* Use the minification filter */ lp_build_sample_mipmap(bld, min_filter, mip_filter, false, coords, offsets, ilevel0, ilevel1, lod_fpart, texels); } lp_build_else(&if_ctx); { /* Use the magnification filter */ lp_build_sample_mipmap(bld, mag_filter, PIPE_TEX_MIPFILTER_NONE, false, coords, offsets, ilevel0, NULL, NULL, texels); } lp_build_endif(&if_ctx); } else { LLVMValueRef need_linear, linear_mask; unsigned mip_filter_for_nearest; struct lp_build_if_state if_ctx; if (min_filter == PIPE_TEX_FILTER_LINEAR) { linear_mask = lod_positive; mip_filter_for_nearest = PIPE_TEX_MIPFILTER_NONE; } else { linear_mask = lp_build_not(&bld->lodi_bld, lod_positive); mip_filter_for_nearest = mip_filter; } need_linear = lp_build_any_true_range(&bld->lodi_bld, bld->num_lods, linear_mask); lp_build_name(need_linear, "need_linear"); if (bld->num_lods != bld->coord_type.length) { linear_mask = lp_build_unpack_broadcast_aos_scalars(bld->gallivm, bld->lodi_type, bld->int_coord_type, linear_mask); } lp_build_if(&if_ctx, bld->gallivm, need_linear); { /* * Do sampling with both filters simultaneously. This means using * a linear filter and doing some tricks (with weights) for the * pixels which need nearest filter. * Note that it's probably rare some pixels need nearest and some * linear filter but the fixups required for the nearest pixels * aren't all that complicated so just always run a combined path * if at least some pixels require linear. */ lp_build_sample_mipmap_both(bld, linear_mask, mip_filter, coords, offsets, ilevel0, ilevel1, lod_fpart, lod_positive, texels); } lp_build_else(&if_ctx); { /* * All pixels require just nearest filtering, which is way * cheaper than linear, hence do a separate path for that. */ lp_build_sample_mipmap(bld, PIPE_TEX_FILTER_NEAREST, mip_filter_for_nearest, false, coords, offsets, ilevel0, ilevel1, lod_fpart, texels); } lp_build_endif(&if_ctx); } } for (chan = 0; chan < 4; ++chan) { colors_out[chan] = LLVMBuildLoad2(builder, bld->texel_bld.vec_type, texels[chan], ""); lp_build_name(colors_out[chan], "sampler%u_texel_%c", sampler_unit, "xyzw"[chan]); } } /** * Texel fetch function. In contrast to general sampling there is no * filtering, no coord minification, lod (if any) is always explicit uint, * coords are uints (in terms of texel units) directly to be applied to the * selected mip level (after adding texel offsets). This function handles * texel fetch for all targets where texel fetch is supported (no cube maps, * but 1d, 2d, 3d are supported, arrays and buffers should be too). */ static void lp_build_fetch_texel(struct lp_build_sample_context *bld, unsigned texture_unit, LLVMValueRef ms_index, const LLVMValueRef *coords, LLVMValueRef explicit_lod, const LLVMValueRef *offsets, LLVMValueRef *colors_out) { struct lp_build_context *perquadi_bld = &bld->lodi_bld; struct lp_build_context *int_coord_bld = &bld->int_coord_bld; unsigned dims = bld->dims, chan; unsigned target = bld->static_texture_state->target; bool out_of_bound_ret_zero = true; LLVMValueRef size, ilevel; LLVMValueRef row_stride_vec = NULL, img_stride_vec = NULL; LLVMValueRef x = coords[0], y = coords[1], z = coords[2]; LLVMValueRef width, height, depth, i, j; LLVMValueRef offset, out_of_bounds, out1; LLVMValueRef first_level; first_level = get_first_level(bld->gallivm, bld->resources_type, bld->resources_ptr, texture_unit, NULL, bld->static_texture_state, bld->dynamic_state); out_of_bounds = int_coord_bld->zero; if (explicit_lod && bld->static_texture_state->target != PIPE_BUFFER) { if (bld->num_mips != int_coord_bld->type.length) { ilevel = lp_build_pack_aos_scalars(bld->gallivm, int_coord_bld->type, perquadi_bld->type, explicit_lod, 0); } else { ilevel = explicit_lod; } LLVMValueRef last_level; last_level = get_last_level(bld->gallivm, bld->resources_type, bld->resources_ptr, texture_unit, NULL, bld->static_texture_state, bld->dynamic_state); first_level = lp_build_broadcast_scalar(&bld->leveli_bld, first_level); last_level = lp_build_broadcast_scalar(&bld->leveli_bld, last_level); lp_build_nearest_mip_level(bld, first_level, last_level, ilevel, &ilevel, out_of_bound_ret_zero ? &out_of_bounds : NULL); } else { assert(bld->num_mips == 1); if (bld->static_texture_state->target != PIPE_BUFFER) { ilevel = first_level; } else { ilevel = lp_build_const_int32(bld->gallivm, 0); } } lp_build_mipmap_level_sizes(bld, ilevel, &size, &row_stride_vec, &img_stride_vec); lp_build_extract_image_sizes(bld, &bld->int_size_bld, int_coord_bld->type, size, &width, &height, &depth); if (target == PIPE_TEXTURE_1D_ARRAY || target == PIPE_TEXTURE_2D_ARRAY) { if (out_of_bound_ret_zero) { z = lp_build_layer_coord(bld, texture_unit, false, z, &out1); out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); } else { z = lp_build_layer_coord(bld, texture_unit, false, z, NULL); } } /* This is a lot like border sampling */ if (offsets[0]) { /* * coords are really unsigned, offsets are signed, but I don't think * exceeding 31 bits is possible */ x = lp_build_add(int_coord_bld, x, offsets[0]); } out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, x, int_coord_bld->zero); out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, x, width); out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); if (dims >= 2) { if (offsets[1]) { y = lp_build_add(int_coord_bld, y, offsets[1]); } out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, y, int_coord_bld->zero); out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, y, height); out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); if (dims >= 3) { if (offsets[2]) { z = lp_build_add(int_coord_bld, z, offsets[2]); } out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_LESS, z, int_coord_bld->zero); out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); out1 = lp_build_cmp(int_coord_bld, PIPE_FUNC_GEQUAL, z, depth); out_of_bounds = lp_build_or(int_coord_bld, out_of_bounds, out1); } } if (bld->static_texture_state->tiled) { lp_build_tiled_sample_offset(&bld->int_coord_bld, bld->format_desc->format, bld->static_texture_state, x, y, z, width, height, img_stride_vec, &offset, &i, &j); } else { lp_build_sample_offset(int_coord_bld, bld->format_desc, x, y, z, row_stride_vec, img_stride_vec, &offset, &i, &j); } if (bld->static_texture_state->target != PIPE_BUFFER) { offset = lp_build_add(int_coord_bld, offset, lp_build_get_mip_offsets(bld, ilevel)); } if (bld->fetch_ms && bld->static_texture_state->level_zero_only) { LLVMValueRef num_samples = bld->dynamic_state->last_level(bld->gallivm, bld->resources_type, bld->resources_ptr, texture_unit, NULL); num_samples = LLVMBuildZExt(bld->gallivm->builder, num_samples, bld->int_bld.elem_type, ""); LLVMValueRef sample_stride = lp_sample_load_mip_value(bld->gallivm, bld->mip_offsets_type, bld->mip_offsets, lp_build_const_int32(bld->gallivm, LP_JIT_TEXTURE_SAMPLE_STRIDE)); lp_build_sample_ms_offset(int_coord_bld, ms_index, num_samples, sample_stride, &offset, &out_of_bounds); } if (bld->residency) { lp_build_gather_resident(&bld->float_vec_bld, bld->dynamic_state, bld->resources_type, bld->resources_ptr, offset, &bld->resident); } offset = lp_build_andnot(int_coord_bld, offset, out_of_bounds); lp_build_fetch_rgba_soa(bld->gallivm, bld->format_desc, bld->texel_type, true, bld->base_ptr, offset, i, j, bld->cache, colors_out); if (out_of_bound_ret_zero) { /* * Only needed for ARB_robust_buffer_access_behavior and d3d10. * Could use min/max above instead of out-of-bounds comparisons * if we don't care about the result returned for out-of-bounds. */ LLVMValueRef oob[4] = { bld->texel_bld.zero, bld->texel_bld.zero, bld->texel_bld.zero, bld->texel_bld.zero, }; lp_build_format_swizzle_soa(bld->format_desc, &bld->texel_bld, oob, oob); for (chan = 0; chan < 4; chan++) { colors_out[chan] = lp_build_select(&bld->texel_bld, out_of_bounds, oob[chan], colors_out[chan]); } } } /** * Just set texels to white instead of actually sampling the texture. * For debugging. */ void lp_build_sample_nop(struct gallivm_state *gallivm, struct lp_type type, const LLVMValueRef *coords, LLVMValueRef texel_out[4]) { LLVMValueRef one = lp_build_one(gallivm, type); for (unsigned chan = 0; chan < 4; chan++) { texel_out[chan] = one; } } struct lp_type lp_build_texel_type(struct lp_type texel_type, const struct util_format_description *format_desc) { /* always using the first channel hopefully should be safe, * if not things WILL break in other places anyway. */ if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB && format_desc->channel[0].pure_integer) { if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) { texel_type = lp_type_int_vec(texel_type.width, texel_type.width * texel_type.length); } else if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) { texel_type = lp_type_uint_vec(texel_type.width, texel_type.width * texel_type.length); } } else if (util_format_has_stencil(format_desc) && !util_format_has_depth(format_desc)) { /* for stencil only formats, sample stencil (uint) */ texel_type = lp_type_uint_vec(texel_type.width, texel_type.width * texel_type.length); } return texel_type; } /** * Build the actual texture sampling code. * 'texel' will return a vector of four LLVMValueRefs corresponding to * R, G, B, A. * \param type vector float type to use for coords, etc. * \param sample_key * \param derivs partial derivatives of (s,t,r,q) with respect to x and y */ void lp_build_sample_soa_code(struct gallivm_state *gallivm, const struct lp_static_texture_state *static_texture_state, const struct lp_static_sampler_state *static_sampler_state, struct lp_sampler_dynamic_state *dynamic_state, struct lp_type type, unsigned sample_key, unsigned texture_index, unsigned sampler_index, LLVMTypeRef resources_type, LLVMValueRef resources_ptr, LLVMTypeRef thread_data_type, LLVMValueRef thread_data_ptr, const LLVMValueRef *coords, const LLVMValueRef *offsets, const struct lp_derivatives *derivs, /* optional */ LLVMValueRef lod, /* optional */ LLVMValueRef ms_index, /* optional */ LLVMValueRef aniso_filter_table, LLVMValueRef *texel_out) { assert(static_texture_state); assert(static_texture_state->format < PIPE_FORMAT_COUNT); assert(static_sampler_state); const enum pipe_texture_target target = static_texture_state->target; const unsigned dims = texture_dims(target); const unsigned num_quads = type.length == 1 ? 1 : type.length / 4; struct lp_build_sample_context bld; struct lp_static_sampler_state derived_sampler_state = *static_sampler_state; LLVMTypeRef i32t = LLVMInt32TypeInContext(gallivm->context); LLVMBuilderRef builder = gallivm->builder; const struct util_format_description *res_format_desc; if (0) { enum pipe_format fmt = static_texture_state->format; debug_printf("Sample from %s\n", util_format_name(fmt)); } const enum lp_sampler_lod_property lod_property = (sample_key & LP_SAMPLER_LOD_PROPERTY_MASK) >> LP_SAMPLER_LOD_PROPERTY_SHIFT; const enum lp_sampler_lod_control lod_control = (sample_key & LP_SAMPLER_LOD_CONTROL_MASK) >> LP_SAMPLER_LOD_CONTROL_SHIFT; const enum lp_sampler_op_type op_type = (sample_key & LP_SAMPLER_OP_TYPE_MASK) >> LP_SAMPLER_OP_TYPE_SHIFT; const bool fetch_ms = !!(sample_key & LP_SAMPLER_FETCH_MS); const bool op_is_tex = op_type == LP_SAMPLER_OP_TEXTURE; const bool op_is_lodq = op_type == LP_SAMPLER_OP_LODQ; const bool op_is_gather = op_type == LP_SAMPLER_OP_GATHER; LLVMValueRef lod_bias = NULL; LLVMValueRef explicit_lod = NULL; if (lod_control == LP_SAMPLER_LOD_BIAS) { lod_bias = lod; assert(lod); assert(derivs == NULL); } else if (lod_control == LP_SAMPLER_LOD_EXPLICIT) { explicit_lod = lod; assert(lod); assert(derivs == NULL); } else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) { assert(derivs); assert(lod == NULL); } else { assert(derivs == NULL); assert(lod == NULL); } if (static_texture_state->format == PIPE_FORMAT_NONE) { /* * If there's nothing bound, format is NONE, and we must return * all zero as mandated by d3d10 in this case. */ LLVMValueRef zero = lp_build_zero(gallivm, type); for (unsigned chan = 0; chan < 4; chan++) { texel_out[chan] = zero; } return; } assert(type.floating); /* Setup our build context */ memset(&bld, 0, sizeof bld); bld.gallivm = gallivm; bld.resources_type = resources_type; bld.resources_ptr = resources_ptr; bld.aniso_filter_table = aniso_filter_table; bld.static_sampler_state = &derived_sampler_state; bld.static_texture_state = static_texture_state; bld.dynamic_state = dynamic_state; bld.format_desc = util_format_description(static_texture_state->format); bld.dims = dims; res_format_desc = util_format_description(static_texture_state->res_format); if (gallivm_perf & GALLIVM_PERF_NO_QUAD_LOD || op_is_lodq) { bld.no_quad_lod = true; } if (!(gallivm_perf & GALLIVM_PERF_RHO_APPROX) || op_is_lodq) { bld.no_rho_approx = true; } if (!(gallivm_perf & GALLIVM_PERF_BRILINEAR) || op_is_lodq || lod_bias || explicit_lod) { bld.no_brilinear = true; } bld.vector_width = lp_type_width(type); bld.float_type = lp_type_float(32); bld.int_type = lp_type_int(32); bld.coord_type = type; bld.int_coord_type = lp_int_type(type); bld.float_size_in_type = lp_type_float(32); bld.float_size_in_type.length = dims > 1 ? 4 : 1; bld.int_size_in_type = lp_int_type(bld.float_size_in_type); bld.texel_type = lp_build_texel_type(type, bld.format_desc); if (!static_texture_state->level_zero_only || !static_sampler_state->max_lod_pos || op_is_lodq) { derived_sampler_state.min_mip_filter = static_sampler_state->min_mip_filter; } else { derived_sampler_state.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; } if (op_is_gather) { /* * gather4 is exactly like GL_LINEAR filtering but in the end skipping * the actual filtering. Using mostly the same paths, so cube face * selection, coord wrapping etc. all naturally uses the same code. */ derived_sampler_state.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; derived_sampler_state.min_img_filter = PIPE_TEX_FILTER_LINEAR; derived_sampler_state.mag_img_filter = PIPE_TEX_FILTER_LINEAR; } const enum pipe_tex_mipfilter mip_filter = derived_sampler_state.min_mip_filter; if (static_texture_state->target == PIPE_TEXTURE_CUBE || static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) { /* * Seamless filtering ignores wrap modes. * Setting to CLAMP_TO_EDGE is correct for nearest filtering, for * bilinear it's not correct but way better than using for instance * repeat. Note we even set this for non-seamless. Technically GL * allows any wrap mode, which made sense when supporting true borders * (can get seamless effect with border and CLAMP_TO_BORDER), but * gallium doesn't support borders and d3d9 requires wrap modes to be * ignored and it's a pain to fix up the sampler state (as it makes it * texture dependent). */ derived_sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE; derived_sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE; } /* * We could force CLAMP to CLAMP_TO_EDGE here if min/mag filter is nearest, * so AoS path could be used. Not sure it's worth the trouble... */ const enum pipe_tex_filter min_img_filter = derived_sampler_state.min_img_filter; const enum pipe_tex_filter mag_img_filter = derived_sampler_state.mag_img_filter; /* * This is all a bit complicated different paths are chosen for performance * reasons. * Essentially, there can be 1 lod per element, 1 lod per quad or 1 lod for * everything (the last two options are equivalent for 4-wide case). * If there's per-quad lod but we split to 4-wide so we can use AoS, per-quad * lod is calculated then the lod value extracted afterwards so making this * case basically the same as far as lod handling is concerned for the * further sample/filter code as the 1 lod for everything case. * Different lod handling mostly shows up when building mipmap sizes * (lp_build_mipmap_level_sizes() and friends) and also in filtering * (getting the fractional part of the lod to the right texels). */ /* * There are other situations where at least the multiple int lods could be * avoided like min and max lod being equal. */ bld.num_mips = bld.num_lods = 1; if ((mip_filter != PIPE_TEX_MIPFILTER_NONE && op_is_tex && (static_texture_state->target == PIPE_TEXTURE_CUBE || static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY)) || op_is_lodq) { /* * special case for using per-pixel lod even for implicit lod, * which is generally never required (ok by APIs) except to please * some (somewhat broken imho) tests (because per-pixel face selection * can cause derivatives to be different for pixels outside the primitive * due to the major axis division even if pre-project derivatives are * looking normal). * For lodq, we do it to simply avoid scalar pack / unpack (albeit for * cube maps we do indeed get per-pixel lod values). */ bld.num_mips = type.length; bld.num_lods = type.length; } else if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT || (explicit_lod || lod_bias || derivs)) { if ((!op_is_tex && target != PIPE_BUFFER) || (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { bld.num_mips = type.length; bld.num_lods = type.length; } else if (op_is_tex && min_img_filter != mag_img_filter) { bld.num_mips = 1; bld.num_lods = type.length; } } /* TODO: for true scalar_lod should only use 1 lod value */ else if ((!op_is_tex && explicit_lod && target != PIPE_BUFFER) || (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { bld.num_mips = num_quads; bld.num_lods = num_quads; } else if (op_is_tex && min_img_filter != mag_img_filter) { bld.num_mips = 1; bld.num_lods = num_quads; } bld.fetch_ms = fetch_ms; bld.residency = !!(sample_key & LP_SAMPLER_RESIDENCY); if (op_is_gather) bld.gather_comp = (sample_key & LP_SAMPLER_GATHER_COMP_MASK) >> LP_SAMPLER_GATHER_COMP_SHIFT; bld.lodf_type = type; /* we want native vector size to be able to use our intrinsics */ if (bld.num_lods != type.length) { /* TODO: this currently always has to be per-quad or per-element */ bld.lodf_type.length = type.length > 4 ? ((type.length + 15) / 16) * 4 : 1; } bld.lodi_type = lp_int_type(bld.lodf_type); bld.levelf_type = bld.lodf_type; if (bld.num_mips == 1) { bld.levelf_type.length = 1; } bld.leveli_type = lp_int_type(bld.levelf_type); bld.float_size_type = bld.float_size_in_type; /* Note: size vectors may not be native. They contain minified w/h/d/_ * values, with per-element lod that is w0/h0/d0/_/w1/h1/d1_/... so up to * 8x4f32 */ if (bld.num_mips > 1) { bld.float_size_type.length = bld.num_mips == type.length ? bld.num_mips * bld.float_size_in_type.length : type.length; } bld.int_size_type = lp_int_type(bld.float_size_type); lp_build_context_init(&bld.float_bld, gallivm, bld.float_type); lp_build_context_init(&bld.float_vec_bld, gallivm, type); lp_build_context_init(&bld.int_bld, gallivm, bld.int_type); lp_build_context_init(&bld.coord_bld, gallivm, bld.coord_type); lp_build_context_init(&bld.int_coord_bld, gallivm, bld.int_coord_type); lp_build_context_init(&bld.int_size_in_bld, gallivm, bld.int_size_in_type); lp_build_context_init(&bld.float_size_in_bld, gallivm, bld.float_size_in_type); lp_build_context_init(&bld.int_size_bld, gallivm, bld.int_size_type); lp_build_context_init(&bld.float_size_bld, gallivm, bld.float_size_type); lp_build_context_init(&bld.texel_bld, gallivm, bld.texel_type); lp_build_context_init(&bld.levelf_bld, gallivm, bld.levelf_type); lp_build_context_init(&bld.leveli_bld, gallivm, bld.leveli_type); lp_build_context_init(&bld.lodf_bld, gallivm, bld.lodf_type); lp_build_context_init(&bld.lodi_bld, gallivm, bld.lodi_type); /* Get the dynamic state */ LLVMValueRef tex_width = dynamic_state->width(gallivm, resources_type, resources_ptr, texture_index, NULL); bld.row_stride_array = dynamic_state->row_stride(gallivm, resources_type, resources_ptr, texture_index, NULL, &bld.row_stride_type); bld.img_stride_array = dynamic_state->img_stride(gallivm, resources_type, resources_ptr, texture_index, NULL, &bld.img_stride_type); bld.base_ptr = dynamic_state->base_ptr(gallivm, resources_type, resources_ptr, texture_index, NULL); bld.mip_offsets = dynamic_state->mip_offsets(gallivm, resources_type, resources_ptr, texture_index, NULL, &bld.mip_offsets_type); /* Note that mip_offsets is an array[level] of offsets to texture images */ if (dynamic_state->cache_ptr && thread_data_ptr) { bld.cache = dynamic_state->cache_ptr(gallivm, thread_data_type, thread_data_ptr, texture_index); } uint32_t res_bw = res_format_desc->block.width; uint32_t res_bh = res_format_desc->block.height; uint32_t bw = bld.format_desc->block.width; uint32_t bh = bld.format_desc->block.height; /* only scale if the blocksizes are different. */ if (res_bw == bw) res_bw = bw = 1; if (res_bh == bh) res_bh = bh = 1; /* width, height, depth as single int vector */ if (dims <= 1) { bld.int_size = tex_width; bld.int_tex_blocksize = LLVMConstInt(i32t, res_bw, 0); bld.int_tex_blocksize_log2 = LLVMConstInt(i32t, util_logbase2(res_bw), 0); bld.int_view_blocksize = LLVMConstInt(i32t, bw, 0); } else { bld.int_size = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef, tex_width, LLVMConstInt(i32t, 0, 0), ""); bld.int_tex_blocksize = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef, LLVMConstInt(i32t, res_bw, 0), LLVMConstInt(i32t, 0, 0), ""); bld.int_tex_blocksize_log2 = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef, LLVMConstInt(i32t, util_logbase2(res_bw), 0), LLVMConstInt(i32t, 0, 0), ""); bld.int_view_blocksize = LLVMBuildInsertElement(builder, bld.int_size_in_bld.undef, LLVMConstInt(i32t, bw, 0), LLVMConstInt(i32t, 0, 0), ""); if (dims >= 2) { LLVMValueRef tex_height = dynamic_state->height(gallivm, resources_type, resources_ptr, texture_index, NULL); tex_height = LLVMBuildZExt(gallivm->builder, tex_height, bld.int_bld.elem_type, ""); bld.int_size = LLVMBuildInsertElement(builder, bld.int_size, tex_height, LLVMConstInt(i32t, 1, 0), ""); bld.int_tex_blocksize = LLVMBuildInsertElement(builder, bld.int_tex_blocksize, LLVMConstInt(i32t, res_bh, 0), LLVMConstInt(i32t, 1, 0), ""); bld.int_tex_blocksize_log2 = LLVMBuildInsertElement(builder, bld.int_tex_blocksize_log2, LLVMConstInt(i32t, util_logbase2(res_bh), 0), LLVMConstInt(i32t, 1, 0), ""); bld.int_view_blocksize = LLVMBuildInsertElement(builder, bld.int_view_blocksize, LLVMConstInt(i32t, bh, 0), LLVMConstInt(i32t, 1, 0), ""); if (dims >= 3) { LLVMValueRef tex_depth = dynamic_state->depth(gallivm, resources_type, resources_ptr, texture_index, NULL); tex_depth = LLVMBuildZExt(gallivm->builder, tex_depth, bld.int_bld.elem_type, ""); bld.int_size = LLVMBuildInsertElement(builder, bld.int_size, tex_depth, LLVMConstInt(i32t, 2, 0), ""); bld.int_tex_blocksize = LLVMBuildInsertElement(builder, bld.int_tex_blocksize, LLVMConstInt(i32t, 1, 0), LLVMConstInt(i32t, 2, 0), ""); bld.int_tex_blocksize_log2 = LLVMBuildInsertElement(builder, bld.int_tex_blocksize_log2, LLVMConstInt(i32t, 0, 0), LLVMConstInt(i32t, 2, 0), ""); bld.int_view_blocksize = LLVMBuildInsertElement(builder, bld.int_view_blocksize, LLVMConstInt(i32t, 1, 0), LLVMConstInt(i32t, 2, 0), ""); } } } LLVMValueRef newcoords[5]; for (unsigned i = 0; i < 5; i++) { newcoords[i] = coords[i]; } if (util_format_is_pure_integer(static_texture_state->format) && !util_format_has_depth(bld.format_desc) && op_is_tex && (static_sampler_state->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR || static_sampler_state->min_img_filter == PIPE_TEX_FILTER_LINEAR || static_sampler_state->mag_img_filter == PIPE_TEX_FILTER_LINEAR)) { /* * Bail if impossible filtering is specified (the awkard additional * depth check is because it is legal in gallium to have things like * S8Z24 here which would say it's pure int despite such formats should * sample the depth component). * In GL such filters make the texture incomplete, this makes it robust * against gallium frontends which set this up regardless (we'd crash in * the lerp later otherwise). * At least in some apis it may be legal to use such filters with lod * queries and/or gather (at least for gather d3d10 says only the wrap * bits are really used hence filter bits are likely simply ignored). * For fetch, we don't get valid samplers either way here. */ LLVMValueRef zero = lp_build_zero(gallivm, type); for (unsigned chan = 0; chan < 4; chan++) { texel_out[chan] = zero; } return; } if (0) { /* For debug: no-op texture sampling */ lp_build_sample_nop(gallivm, bld.texel_type, newcoords, texel_out); } else if (op_type == LP_SAMPLER_OP_FETCH) { lp_build_fetch_texel(&bld, texture_index, ms_index, newcoords, lod, offsets, texel_out); if (bld.residency) texel_out[4] = bld.resident; } else { LLVMValueRef lod_fpart = NULL, lod_positive = NULL; LLVMValueRef ilevel0 = NULL, ilevel1 = NULL, lod = NULL; bool use_aos = util_format_fits_8unorm(bld.format_desc) && op_is_tex && /* not sure this is strictly needed or simply impossible */ derived_sampler_state.compare_mode == PIPE_TEX_COMPARE_NONE && derived_sampler_state.aniso == 0 && lp_is_simple_wrap_mode(derived_sampler_state.wrap_s); use_aos &= bld.num_lods <= num_quads || derived_sampler_state.min_img_filter == derived_sampler_state.mag_img_filter; use_aos &= !static_texture_state->tiled; if (gallivm_perf & GALLIVM_PERF_NO_AOS_SAMPLING) { use_aos = 0; } if (dims > 1) { use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_t); if (dims > 2) { use_aos &= lp_is_simple_wrap_mode(derived_sampler_state.wrap_r); } } if ((static_texture_state->target == PIPE_TEXTURE_CUBE || static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) && derived_sampler_state.seamless_cube_map && (derived_sampler_state.min_img_filter == PIPE_TEX_FILTER_LINEAR || derived_sampler_state.mag_img_filter == PIPE_TEX_FILTER_LINEAR)) { /* theoretically possible with AoS filtering but not implemented (complex!) */ use_aos = 0; } if ((gallivm_debug & GALLIVM_DEBUG_PERF) && !use_aos && util_format_fits_8unorm(bld.format_desc)) { debug_printf("%s: using floating point linear filtering for %s\n", __func__, bld.format_desc->short_name); debug_printf(" min_img %d mag_img %d mip %d target %d seamless %d" " wraps %d wrapt %d wrapr %d\n", derived_sampler_state.min_img_filter, derived_sampler_state.mag_img_filter, derived_sampler_state.min_mip_filter, static_texture_state->target, derived_sampler_state.seamless_cube_map, derived_sampler_state.wrap_s, derived_sampler_state.wrap_t, derived_sampler_state.wrap_r); } lp_build_sample_common(&bld, op_is_lodq, texture_index, sampler_index, newcoords, derivs, lod_bias, explicit_lod, &lod_positive, &lod, &lod_fpart, &ilevel0, &ilevel1); if (op_is_lodq) { texel_out[0] = lod_fpart; texel_out[1] = lod; texel_out[2] = texel_out[3] = bld.coord_bld.zero; if (bld.residency) texel_out[4] = bld.resident; return; } if (use_aos && static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) { /* The aos path doesn't do seamless filtering so simply add cube layer * to face now. */ newcoords[2] = lp_build_add(&bld.int_coord_bld, newcoords[2], newcoords[3]); } /* * we only try 8-wide sampling with soa or if we have AVX2 * as it appears to be a loss with just AVX) */ if (num_quads == 1 || !use_aos || (util_get_cpu_caps()->has_avx2 && (bld.num_lods == 1 || derived_sampler_state.min_img_filter == derived_sampler_state.mag_img_filter))) { if (use_aos) { /* do sampling/filtering with fixed pt arithmetic */ lp_build_sample_aos(&bld, newcoords[0], newcoords[1], newcoords[2], offsets, lod_positive, lod_fpart, ilevel0, ilevel1, texel_out); } else { lp_build_sample_general(&bld, sampler_index, op_type == LP_SAMPLER_OP_GATHER, newcoords, offsets, lod_positive, lod_fpart, ilevel0, ilevel1, texel_out); if (bld.residency) texel_out[4] = bld.resident; } } else { struct lp_build_sample_context bld4; struct lp_type type4 = type; LLVMValueRef texelout4[4]; LLVMValueRef texelouttmp[4][LP_MAX_VECTOR_LENGTH/16]; type4.length = 4; /* Setup our build context */ memset(&bld4, 0, sizeof bld4); bld4.no_quad_lod = bld.no_quad_lod; bld4.no_rho_approx = bld.no_rho_approx; bld4.no_brilinear = bld.no_brilinear; bld4.gallivm = bld.gallivm; bld4.resources_type = bld.resources_type; bld4.resources_ptr = bld.resources_ptr; bld4.aniso_filter_table = aniso_filter_table; bld4.static_texture_state = bld.static_texture_state; bld4.static_sampler_state = bld.static_sampler_state; bld4.dynamic_state = bld.dynamic_state; bld4.format_desc = bld.format_desc; bld4.dims = bld.dims; bld4.row_stride_type = bld.row_stride_type; bld4.row_stride_array = bld.row_stride_array; bld4.img_stride_type = bld.img_stride_type; bld4.img_stride_array = bld.img_stride_array; bld4.base_ptr = bld.base_ptr; bld4.mip_offsets_type = bld.mip_offsets_type; bld4.mip_offsets = bld.mip_offsets; bld4.int_size = bld.int_size; bld4.int_tex_blocksize = bld.int_tex_blocksize; bld4.int_tex_blocksize_log2 = bld.int_tex_blocksize_log2; bld4.int_view_blocksize = bld.int_view_blocksize; bld4.cache = bld.cache; bld4.vector_width = lp_type_width(type4); bld4.float_type = lp_type_float(32); bld4.int_type = lp_type_int(32); bld4.coord_type = type4; bld4.int_coord_type = lp_int_type(type4); bld4.float_size_in_type = lp_type_float(32); bld4.float_size_in_type.length = dims > 1 ? 4 : 1; bld4.int_size_in_type = lp_int_type(bld4.float_size_in_type); bld4.texel_type = bld.texel_type; bld4.texel_type.length = 4; bld4.num_mips = bld4.num_lods = 1; if (bld4.no_quad_lod && bld4.no_rho_approx && (static_texture_state->target == PIPE_TEXTURE_CUBE || static_texture_state->target == PIPE_TEXTURE_CUBE_ARRAY) && (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { bld4.num_mips = type4.length; bld4.num_lods = type4.length; } if (lod_property == LP_SAMPLER_LOD_PER_ELEMENT && (explicit_lod || lod_bias || derivs)) { if ((!op_is_tex && target != PIPE_BUFFER) || (op_is_tex && mip_filter != PIPE_TEX_MIPFILTER_NONE)) { bld4.num_mips = type4.length; bld4.num_lods = type4.length; } else if (op_is_tex && min_img_filter != mag_img_filter) { bld4.num_mips = 1; bld4.num_lods = type4.length; } } /* we want native vector size to be able to use our intrinsics */ bld4.lodf_type = type4; if (bld4.num_lods != type4.length) { bld4.lodf_type.length = 1; } bld4.lodi_type = lp_int_type(bld4.lodf_type); bld4.levelf_type = type4; if (bld4.num_mips != type4.length) { bld4.levelf_type.length = 1; } bld4.leveli_type = lp_int_type(bld4.levelf_type); bld4.float_size_type = bld4.float_size_in_type; if (bld4.num_mips > 1) { bld4.float_size_type.length = bld4.num_mips == type4.length ? bld4.num_mips * bld4.float_size_in_type.length : type4.length; } bld4.int_size_type = lp_int_type(bld4.float_size_type); lp_build_context_init(&bld4.float_bld, gallivm, bld4.float_type); lp_build_context_init(&bld4.float_vec_bld, gallivm, type4); lp_build_context_init(&bld4.int_bld, gallivm, bld4.int_type); lp_build_context_init(&bld4.coord_bld, gallivm, bld4.coord_type); lp_build_context_init(&bld4.int_coord_bld, gallivm, bld4.int_coord_type); lp_build_context_init(&bld4.int_size_in_bld, gallivm, bld4.int_size_in_type); lp_build_context_init(&bld4.float_size_in_bld, gallivm, bld4.float_size_in_type); lp_build_context_init(&bld4.int_size_bld, gallivm, bld4.int_size_type); lp_build_context_init(&bld4.float_size_bld, gallivm, bld4.float_size_type); lp_build_context_init(&bld4.texel_bld, gallivm, bld4.texel_type); lp_build_context_init(&bld4.levelf_bld, gallivm, bld4.levelf_type); lp_build_context_init(&bld4.leveli_bld, gallivm, bld4.leveli_type); lp_build_context_init(&bld4.lodf_bld, gallivm, bld4.lodf_type); lp_build_context_init(&bld4.lodi_bld, gallivm, bld4.lodi_type); for (unsigned i = 0; i < num_quads; i++) { LLVMValueRef s4, t4, r4; LLVMValueRef lod_positive4, lod_fpart4 = NULL; LLVMValueRef ilevel04, ilevel14 = NULL; LLVMValueRef offsets4[4] = { NULL }; unsigned num_lods = bld4.num_lods; s4 = lp_build_extract_range(gallivm, newcoords[0], 4*i, 4); t4 = lp_build_extract_range(gallivm, newcoords[1], 4*i, 4); r4 = lp_build_extract_range(gallivm, newcoords[2], 4*i, 4); if (offsets[0]) { offsets4[0] = lp_build_extract_range(gallivm, offsets[0], 4*i, 4); if (dims > 1) { offsets4[1] = lp_build_extract_range(gallivm, offsets[1], 4*i, 4); if (dims > 2) { offsets4[2] = lp_build_extract_range(gallivm, offsets[2], 4*i, 4); } } } lod_positive4 = lp_build_extract_range(gallivm, lod_positive, num_lods * i, num_lods); ilevel04 = bld.num_mips == 1 ? ilevel0 : lp_build_extract_range(gallivm, ilevel0, num_lods * i, num_lods); if (mip_filter == PIPE_TEX_MIPFILTER_LINEAR) { ilevel14 = lp_build_extract_range(gallivm, ilevel1, num_lods * i, num_lods); lod_fpart4 = lp_build_extract_range(gallivm, lod_fpart, num_lods * i, num_lods); } if (use_aos) { /* do sampling/filtering with fixed pt arithmetic */ lp_build_sample_aos(&bld4, s4, t4, r4, offsets4, lod_positive4, lod_fpart4, ilevel04, ilevel14, texelout4); } else { /* this path is currently unreachable and hence might break easily... */ LLVMValueRef newcoords4[5]; newcoords4[0] = s4; newcoords4[1] = t4; newcoords4[2] = r4; newcoords4[3] = lp_build_extract_range(gallivm, newcoords[3], 4*i, 4); newcoords4[4] = lp_build_extract_range(gallivm, newcoords[4], 4*i, 4); lp_build_sample_general(&bld4, sampler_index, op_type == LP_SAMPLER_OP_GATHER, newcoords4, offsets4, lod_positive4, lod_fpart4, ilevel04, ilevel14, texelout4); } for (unsigned j = 0; j < 4; j++) { texelouttmp[j][i] = texelout4[j]; } } for (unsigned j = 0; j < 4; j++) { texel_out[j] = lp_build_concat(gallivm, texelouttmp[j], type4, num_quads); } } } if (target != PIPE_BUFFER && op_type != LP_SAMPLER_OP_GATHER) { apply_sampler_swizzle(&bld, texel_out); } /* * texel type can be a (32bit) int/uint (for pure int formats only), * however we are expected to always return floats (storage is untyped). */ if (!bld.texel_type.floating) { unsigned chan; for (chan = 0; chan < 4; chan++) { texel_out[chan] = LLVMBuildBitCast(builder, texel_out[chan], lp_build_vec_type(gallivm, type), ""); } } } #define USE_TEX_FUNC_CALL 1 static inline void get_target_info(enum pipe_texture_target target, unsigned *num_coords, unsigned *num_derivs, unsigned *num_offsets, unsigned *layer) { unsigned dims = texture_dims(target); *num_coords = dims; *num_offsets = dims; *num_derivs = (target == PIPE_TEXTURE_CUBE || target == PIPE_TEXTURE_CUBE_ARRAY) ? 3 : dims; *layer = has_layer_coord(target) ? 2: 0; if (target == PIPE_TEXTURE_CUBE_ARRAY) { /* * dims doesn't include r coord for cubes - this is handled * by layer instead, but need to fix up for cube arrays... */ *layer = 3; *num_coords = 3; } } /** * Generate the function body for a texture sampling function. */ static void lp_build_sample_gen_func(struct gallivm_state *gallivm, const struct lp_static_texture_state *static_texture_state, const struct lp_static_sampler_state *static_sampler_state, struct lp_sampler_dynamic_state *dynamic_state, struct lp_type type, LLVMTypeRef resources_type, LLVMTypeRef thread_data_type, unsigned texture_index, unsigned sampler_index, LLVMValueRef function, unsigned num_args, unsigned sample_key, bool has_aniso_filter_table) { LLVMBuilderRef old_builder; LLVMBasicBlockRef block; LLVMValueRef coords[5]; LLVMValueRef offsets[3] = { NULL }; LLVMValueRef lod = NULL; LLVMValueRef ms_index = NULL; LLVMValueRef resources_ptr; LLVMValueRef thread_data_ptr = NULL; LLVMValueRef aniso_filter_table = NULL; LLVMValueRef texel_out[4]; struct lp_derivatives derivs; struct lp_derivatives *deriv_ptr = NULL; unsigned num_param = 0; unsigned num_coords, num_derivs, num_offsets, layer; bool need_cache = false; const enum lp_sampler_lod_control lod_control = (sample_key & LP_SAMPLER_LOD_CONTROL_MASK) >> LP_SAMPLER_LOD_CONTROL_SHIFT; const enum lp_sampler_op_type op_type = (sample_key & LP_SAMPLER_OP_TYPE_MASK) >> LP_SAMPLER_OP_TYPE_SHIFT; get_target_info(static_texture_state->target, &num_coords, &num_derivs, &num_offsets, &layer); /* lod query doesn't take a layer */ if (layer && op_type == LP_SAMPLER_OP_LODQ) layer = 0; if (dynamic_state->cache_ptr) { const struct util_format_description *format_desc; format_desc = util_format_description(static_texture_state->format); if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) { need_cache = true; } } /* "unpack" arguments */ resources_ptr = LLVMGetParam(function, num_param++); if (has_aniso_filter_table) aniso_filter_table = LLVMGetParam(function, num_param++); if (need_cache) { thread_data_ptr = LLVMGetParam(function, num_param++); } for (unsigned i = 0; i < num_coords; i++) { coords[i] = LLVMGetParam(function, num_param++); } for (unsigned i = num_coords; i < 5; i++) { /* This is rather unfortunate... */ coords[i] = lp_build_undef(gallivm, type); } if (layer) { coords[layer] = LLVMGetParam(function, num_param++); } if (sample_key & LP_SAMPLER_SHADOW) { coords[4] = LLVMGetParam(function, num_param++); } if (sample_key & LP_SAMPLER_FETCH_MS) { ms_index = LLVMGetParam(function, num_param++); } if (sample_key & LP_SAMPLER_OFFSETS) { for (unsigned i = 0; i < num_offsets; i++) { offsets[i] = LLVMGetParam(function, num_param++); } } if (lod_control == LP_SAMPLER_LOD_BIAS || lod_control == LP_SAMPLER_LOD_EXPLICIT) { lod = LLVMGetParam(function, num_param++); } else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) { for (unsigned i = 0; i < num_derivs; i++) { derivs.ddx[i] = LLVMGetParam(function, num_param++); derivs.ddy[i] = LLVMGetParam(function, num_param++); } deriv_ptr = &derivs; } assert(num_args == num_param); /* * Function body */ old_builder = gallivm->builder; block = LLVMAppendBasicBlockInContext(gallivm->context, function, "entry"); gallivm->builder = LLVMCreateBuilderInContext(gallivm->context); LLVMPositionBuilderAtEnd(gallivm->builder, block); lp_build_sample_soa_code(gallivm, static_texture_state, static_sampler_state, dynamic_state, type, sample_key, texture_index, sampler_index, resources_type, resources_ptr, thread_data_type, thread_data_ptr, coords, offsets, deriv_ptr, lod, ms_index, aniso_filter_table, texel_out); LLVMBuildAggregateRet(gallivm->builder, texel_out, 4); LLVMDisposeBuilder(gallivm->builder); gallivm->builder = old_builder; gallivm_verify_function(gallivm, function); } /** * Call the matching function for texture sampling. * If there's no match, generate a new one. */ static void lp_build_sample_soa_func(struct gallivm_state *gallivm, const struct lp_static_texture_state *static_texture_state, const struct lp_static_sampler_state *static_sampler_state, struct lp_sampler_dynamic_state *dynamic_state, const struct lp_sampler_params *params, unsigned texture_index, unsigned sampler_index, LLVMValueRef *tex_ret) { LLVMBuilderRef builder = gallivm->builder; LLVMModuleRef module = LLVMGetGlobalParent(LLVMGetBasicBlockParent( LLVMGetInsertBlock(builder))); LLVMValueRef args[LP_MAX_TEX_FUNC_ARGS]; unsigned sample_key = params->sample_key; const LLVMValueRef *coords = params->coords; const LLVMValueRef *offsets = params->offsets; const struct lp_derivatives *derivs = params->derivs; const enum lp_sampler_lod_control lod_control = (sample_key & LP_SAMPLER_LOD_CONTROL_MASK) >> LP_SAMPLER_LOD_CONTROL_SHIFT; const enum lp_sampler_op_type op_type = (sample_key & LP_SAMPLER_OP_TYPE_MASK) >> LP_SAMPLER_OP_TYPE_SHIFT; unsigned num_coords, num_derivs, num_offsets, layer; get_target_info(static_texture_state->target, &num_coords, &num_derivs, &num_offsets, &layer); /* lod query doesn't take a layer */ if (layer && op_type == LP_SAMPLER_OP_LODQ) layer = 0; bool need_cache = false; if (dynamic_state->cache_ptr) { const struct util_format_description *format_desc; format_desc = util_format_description(static_texture_state->format); if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC) { need_cache = true; } } /* * texture function matches are found by name. * Thus the name has to include both the texture and sampler unit * (which covers all static state) plus the actual texture function * (including things like offsets, shadow coord, lod control). * Additionally lod_property has to be included too. */ char func_name[64]; snprintf(func_name, sizeof(func_name), "texfunc_res_%d_sam_%d_%x", texture_index, sampler_index, sample_key); LLVMValueRef function = LLVMGetNamedFunction(module, func_name); LLVMTypeRef arg_types[LP_MAX_TEX_FUNC_ARGS]; LLVMTypeRef ret_type; LLVMTypeRef val_type[4]; unsigned num_param = 0; /* * Generate the function prototype. */ arg_types[num_param++] = LLVMTypeOf(params->resources_ptr); if (params->aniso_filter_table) arg_types[num_param++] = LLVMTypeOf(params->aniso_filter_table); if (need_cache) { arg_types[num_param++] = LLVMTypeOf(params->thread_data_ptr); } for (unsigned i = 0; i < num_coords; i++) { arg_types[num_param++] = LLVMTypeOf(coords[0]); assert(LLVMTypeOf(coords[0]) == LLVMTypeOf(coords[i])); } if (layer) { arg_types[num_param++] = LLVMTypeOf(coords[layer]); assert(LLVMTypeOf(coords[0]) == LLVMTypeOf(coords[layer])); } if (sample_key & LP_SAMPLER_SHADOW) { arg_types[num_param++] = LLVMTypeOf(coords[0]); } if (sample_key & LP_SAMPLER_FETCH_MS) { arg_types[num_param++] = LLVMTypeOf(params->ms_index); } if (sample_key & LP_SAMPLER_OFFSETS) { for (unsigned i = 0; i < num_offsets; i++) { arg_types[num_param++] = LLVMTypeOf(offsets[0]); assert(LLVMTypeOf(offsets[0]) == LLVMTypeOf(offsets[i])); } } if (lod_control == LP_SAMPLER_LOD_BIAS || lod_control == LP_SAMPLER_LOD_EXPLICIT) { arg_types[num_param++] = LLVMTypeOf(params->lod); } else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) { for (unsigned i = 0; i < num_derivs; i++) { arg_types[num_param++] = LLVMTypeOf(derivs->ddx[i]); arg_types[num_param++] = LLVMTypeOf(derivs->ddy[i]); assert(LLVMTypeOf(derivs->ddx[0]) == LLVMTypeOf(derivs->ddx[i])); assert(LLVMTypeOf(derivs->ddy[0]) == LLVMTypeOf(derivs->ddy[i])); } } val_type[0] = val_type[1] = val_type[2] = val_type[3] = lp_build_vec_type(gallivm, params->type); ret_type = LLVMStructTypeInContext(gallivm->context, val_type, 4, 0); LLVMTypeRef function_type = LLVMFunctionType(ret_type, arg_types, num_param, 0); if (!function) { function = LLVMAddFunction(module, func_name, function_type); for (unsigned i = 0; i < num_param; ++i) { if (LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind) { lp_add_function_attr(function, i + 1, LP_FUNC_ATTR_NOALIAS); } } LLVMSetFunctionCallConv(function, LLVMFastCallConv); LLVMSetLinkage(function, LLVMInternalLinkage); lp_build_sample_gen_func(gallivm, static_texture_state, static_sampler_state, dynamic_state, params->type, params->resources_type, params->thread_data_type, texture_index, sampler_index, function, num_param, sample_key, params->aniso_filter_table ? true : false); } unsigned num_args = 0; args[num_args++] = params->resources_ptr; if (params->aniso_filter_table) args[num_args++] = params->aniso_filter_table; if (need_cache) { args[num_args++] = params->thread_data_ptr; } for (unsigned i = 0; i < num_coords; i++) { args[num_args++] = coords[i]; } if (layer) { args[num_args++] = coords[layer]; } if (sample_key & LP_SAMPLER_SHADOW) { args[num_args++] = coords[4]; } if (sample_key & LP_SAMPLER_FETCH_MS) { args[num_args++] = params->ms_index; } if (sample_key & LP_SAMPLER_OFFSETS) { for (unsigned i = 0; i < num_offsets; i++) { args[num_args++] = offsets[i]; } } if (lod_control == LP_SAMPLER_LOD_BIAS || lod_control == LP_SAMPLER_LOD_EXPLICIT) { args[num_args++] = params->lod; } else if (lod_control == LP_SAMPLER_LOD_DERIVATIVES) { for (unsigned i = 0; i < num_derivs; i++) { args[num_args++] = derivs->ddx[i]; args[num_args++] = derivs->ddy[i]; } } assert(num_args <= LP_MAX_TEX_FUNC_ARGS); *tex_ret = LLVMBuildCall2(builder, function_type, function, args, num_args, ""); LLVMBasicBlockRef bb = LLVMGetInsertBlock(builder); LLVMValueRef inst = LLVMGetLastInstruction(bb); LLVMSetInstructionCallConv(inst, LLVMFastCallConv); } /** * Build texture sampling code. * Either via a function call or inline it directly. */ void lp_build_sample_soa(const struct lp_static_texture_state *static_texture_state, const struct lp_static_sampler_state *static_sampler_state, struct lp_sampler_dynamic_state *dynamic_state, struct gallivm_state *gallivm, const struct lp_sampler_params *params) { bool use_tex_func = false; /* * Do not use a function call if the sampling is "simple enough". * We define this by * a) format * b) no mips (either one level only or no mip filter) * No mips will definitely make the code smaller, though * the format requirement is a bit iffy - there's some (SoA) formats * which definitely generate less code. This does happen to catch * some important cases though which are hurt quite a bit by using * a call (though not really because of the call overhead but because * they are reusing the same texture unit with some of the same * parameters). * Ideally we'd let llvm recognize this stuff by doing IPO passes. */ if (USE_TEX_FUNC_CALL) { const struct util_format_description *format_desc = util_format_description(static_texture_state->format); const bool simple_format = (util_format_is_rgba8_variant(format_desc) && format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB); const enum lp_sampler_op_type op_type = (params->sample_key & LP_SAMPLER_OP_TYPE_MASK) >> LP_SAMPLER_OP_TYPE_SHIFT; const bool simple_tex = op_type != LP_SAMPLER_OP_TEXTURE || ((static_sampler_state->min_mip_filter == PIPE_TEX_MIPFILTER_NONE || static_texture_state->level_zero_only == true) && static_sampler_state->min_img_filter == static_sampler_state->mag_img_filter); use_tex_func = !(simple_format && simple_tex); } if (use_tex_func) { LLVMValueRef tex_ret; lp_build_sample_soa_func(gallivm, static_texture_state, static_sampler_state, dynamic_state, params, params->texture_index, params->sampler_index, &tex_ret); for (unsigned i = 0; i < 4; i++) { params->texel[i] = LLVMBuildExtractValue(gallivm->builder, tex_ret, i, ""); } } else { lp_build_sample_soa_code(gallivm, static_texture_state, static_sampler_state, dynamic_state, params->type, params->sample_key, params->texture_index, params->sampler_index, params->resources_type, params->resources_ptr, params->thread_data_type, params->thread_data_ptr, params->coords, params->offsets, params->derivs, params->lod, params->ms_index, params->aniso_filter_table, params->texel); } } void lp_build_size_query_soa(struct gallivm_state *gallivm, const struct lp_static_texture_state *static_state, struct lp_sampler_dynamic_state *dynamic_state, const struct lp_sampler_size_query_params *params) { LLVMValueRef first_level = NULL; const unsigned num_lods = 1; LLVMTypeRef resources_type = params->resources_type; LLVMValueRef resources_ptr = params->resources_ptr; const unsigned texture_unit = params->texture_unit; const enum pipe_texture_target target = params->target; LLVMValueRef texture_unit_offset = params->texture_unit_offset; const struct util_format_description *format_desc = util_format_description(static_state->format); const struct util_format_description *res_format_desc = util_format_description(static_state->res_format); if (static_state->format == PIPE_FORMAT_NONE) { /* * If there's nothing bound, format is NONE, and we must return * all zero as mandated by d3d10 in this case. */ LLVMValueRef zero = lp_build_const_vec(gallivm, params->int_type, 0.0F); for (unsigned chan = 0; chan < 4; chan++) { params->sizes_out[chan] = zero; } return; } /* * Do some sanity verification about bound texture and shader dcl target. * Not entirely sure what's possible but assume array/non-array * always compatible (probably not ok for OpenGL but d3d10 has no * distinction of arrays at the resource level). * Everything else looks bogus (though not entirely sure about rect/2d). * Currently disabled because it causes assertion failures if there's * nothing bound (or rather a dummy texture, not that this case would * return the right values). */ if (0 && static_state->target != target) { if (static_state->target == PIPE_TEXTURE_1D) assert(target == PIPE_TEXTURE_1D_ARRAY); else if (static_state->target == PIPE_TEXTURE_1D_ARRAY) assert(target == PIPE_TEXTURE_1D); else if (static_state->target == PIPE_TEXTURE_2D) assert(target == PIPE_TEXTURE_2D_ARRAY); else if (static_state->target == PIPE_TEXTURE_2D_ARRAY) assert(target == PIPE_TEXTURE_2D); else if (static_state->target == PIPE_TEXTURE_CUBE) assert(target == PIPE_TEXTURE_CUBE_ARRAY); else if (static_state->target == PIPE_TEXTURE_CUBE_ARRAY) assert(target == PIPE_TEXTURE_CUBE); else assert(0); } const unsigned dims = texture_dims(target); const bool has_array = has_layer_coord(target); assert(!params->int_type.floating); struct lp_build_context bld_int_vec4; lp_build_context_init(&bld_int_vec4, gallivm, lp_type_int_vec(32, 128)); if (params->samples_only) { LLVMValueRef num_samples; if (params->ms && static_state->level_zero_only) { /* multisample never has levels. */ num_samples = dynamic_state->last_level(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset); num_samples = LLVMBuildZExt(gallivm->builder, num_samples, bld_int_vec4.elem_type, ""); } else { num_samples = lp_build_const_int32(gallivm, 0); } params->sizes_out[0] = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, params->int_type), num_samples); return; } LLVMValueRef lod; LLVMValueRef level = 0; if (params->explicit_lod) { /* FIXME: this needs to honor per-element lod */ lod = LLVMBuildExtractElement(gallivm->builder, params->explicit_lod, lp_build_const_int32(gallivm, 0), ""); first_level = get_first_level(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset, static_state, dynamic_state); level = LLVMBuildAdd(gallivm->builder, lod, first_level, "level"); lod = lp_build_broadcast_scalar(&bld_int_vec4, level); } else { lod = bld_int_vec4.zero; } LLVMValueRef size = bld_int_vec4.undef; LLVMValueRef tex_blocksize = bld_int_vec4.undef; LLVMValueRef tex_blocksize_log2 = bld_int_vec4.undef; LLVMValueRef view_blocksize = bld_int_vec4.undef; uint32_t res_bw = res_format_desc->block.width; uint32_t res_bh = res_format_desc->block.height; uint32_t bw = format_desc->block.width; uint32_t bh = format_desc->block.height; /* only scale if the blocksizes are different. */ if (res_bw == bw) res_bw = bw = 1; if (res_bh == bh) res_bh = bh = 1; LLVMValueRef tex_width = dynamic_state->width(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset); size = LLVMBuildInsertElement(gallivm->builder, size, tex_width, lp_build_const_int32(gallivm, 0), ""); tex_blocksize = LLVMBuildInsertElement(gallivm->builder, tex_blocksize, lp_build_const_int32(gallivm, res_bw), lp_build_const_int32(gallivm, 0), ""); tex_blocksize_log2 = LLVMBuildInsertElement(gallivm->builder, tex_blocksize_log2, lp_build_const_int32(gallivm, util_logbase2(res_bw)), lp_build_const_int32(gallivm, 0), ""); view_blocksize = LLVMBuildInsertElement(gallivm->builder, view_blocksize, lp_build_const_int32(gallivm, bw), lp_build_const_int32(gallivm, 0), ""); if (dims >= 2) { LLVMValueRef tex_height = dynamic_state->height(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset); tex_height = LLVMBuildZExt(gallivm->builder, tex_height, bld_int_vec4.elem_type, ""); size = LLVMBuildInsertElement(gallivm->builder, size, tex_height, lp_build_const_int32(gallivm, 1), ""); tex_blocksize = LLVMBuildInsertElement(gallivm->builder, tex_blocksize, lp_build_const_int32(gallivm, res_bh), lp_build_const_int32(gallivm, 1), ""); tex_blocksize_log2 = LLVMBuildInsertElement(gallivm->builder, tex_blocksize_log2, lp_build_const_int32(gallivm, util_logbase2(res_bh)), lp_build_const_int32(gallivm, 1), ""); view_blocksize = LLVMBuildInsertElement(gallivm->builder, view_blocksize, lp_build_const_int32(gallivm, bh), lp_build_const_int32(gallivm, 1), ""); } if (dims >= 3) { LLVMValueRef tex_depth = dynamic_state->depth(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset); tex_depth = LLVMBuildZExt(gallivm->builder, tex_depth, bld_int_vec4.elem_type, ""); size = LLVMBuildInsertElement(gallivm->builder, size, tex_depth, lp_build_const_int32(gallivm, 2), ""); tex_blocksize = LLVMBuildInsertElement(gallivm->builder, tex_blocksize, lp_build_const_int32(gallivm, 1), lp_build_const_int32(gallivm, 2), ""); tex_blocksize_log2 = LLVMBuildInsertElement(gallivm->builder, tex_blocksize_log2, lp_build_const_int32(gallivm, 0), lp_build_const_int32(gallivm, 2), ""); view_blocksize = LLVMBuildInsertElement(gallivm->builder, view_blocksize, lp_build_const_int32(gallivm, 1), lp_build_const_int32(gallivm, 2), ""); } size = lp_build_minify(&bld_int_vec4, size, lod, true); size = lp_build_scale_view_dims(&bld_int_vec4, size, tex_blocksize, tex_blocksize_log2, view_blocksize); if (has_array) { LLVMValueRef layers = dynamic_state->depth(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset); layers = LLVMBuildZExt(gallivm->builder, layers, bld_int_vec4.elem_type, ""); if (target == PIPE_TEXTURE_CUBE_ARRAY) { /* * It looks like GL wants number of cubes, d3d10.1 has it undefined? * Could avoid this by passing in number of cubes instead of total * number of layers (might make things easier elsewhere too). */ LLVMValueRef six = lp_build_const_int32(gallivm, 6); layers = LLVMBuildSDiv(gallivm->builder, layers, six, ""); } size = LLVMBuildInsertElement(gallivm->builder, size, layers, lp_build_const_int32(gallivm, dims), ""); } /* * d3d10 requires zero for x/y/z values (but not w, i.e. mip levels) * if level is out of bounds (note this can't cover unbound texture * here, which also requires returning zero). */ if (params->explicit_lod && params->is_sviewinfo) { LLVMValueRef last_level, out, out1; struct lp_build_context leveli_bld; /* everything is scalar for now */ lp_build_context_init(&leveli_bld, gallivm, lp_type_int_vec(32, 32)); last_level = get_last_level(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset, static_state, dynamic_state); out = lp_build_cmp(&leveli_bld, PIPE_FUNC_LESS, level, first_level); out1 = lp_build_cmp(&leveli_bld, PIPE_FUNC_GREATER, level, last_level); out = lp_build_or(&leveli_bld, out, out1); if (num_lods == 1) { out = lp_build_broadcast_scalar(&bld_int_vec4, out); } else { /* TODO */ assert(0); } size = lp_build_andnot(&bld_int_vec4, size, out); } unsigned i; for (i = 0; i < dims + (has_array ? 1 : 0); i++) { params->sizes_out[i] = lp_build_extract_broadcast(gallivm, bld_int_vec4.type, params->int_type, size, lp_build_const_int32(gallivm, i)); } if (params->is_sviewinfo) { for (; i < 4; i++) { params->sizes_out[i] = lp_build_const_vec(gallivm, params->int_type, 0.0); } } /* * if there's no explicit_lod (buffers, rects) queries requiring nr of * mips would be illegal. */ if (params->is_sviewinfo && params->explicit_lod) { struct lp_build_context bld_int_scalar; lp_build_context_init(&bld_int_scalar, gallivm, lp_type_int(32)); LLVMValueRef num_levels; if (static_state->level_zero_only) { num_levels = bld_int_scalar.one; } else { LLVMValueRef last_level; last_level = get_last_level(gallivm, resources_type, resources_ptr, texture_unit, texture_unit_offset, static_state, dynamic_state); num_levels = lp_build_sub(&bld_int_scalar, last_level, first_level); num_levels = lp_build_add(&bld_int_scalar, num_levels, bld_int_scalar.one); } params->sizes_out[3] = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, params->int_type), num_levels); } if (target == PIPE_BUFFER) { struct lp_build_context bld_int; lp_build_context_init(&bld_int, gallivm, params->int_type); params->sizes_out[0] = lp_build_min(&bld_int, params->sizes_out[0], lp_build_const_int_vec(gallivm, params->int_type, LP_MAX_TEXEL_BUFFER_ELEMENTS)); } } static void lp_build_do_atomic_soa(struct gallivm_state *gallivm, const struct util_format_description *format_desc, struct lp_type type, LLVMValueRef exec_mask, LLVMValueRef base_ptr, LLVMValueRef offset, LLVMValueRef out_of_bounds, unsigned img_op, LLVMAtomicRMWBinOp op, const LLVMValueRef rgba_in[4], const LLVMValueRef rgba2_in[4], LLVMValueRef atomic_result[4]) { const enum pipe_format format = format_desc->format; bool valid = format == PIPE_FORMAT_R32_UINT || format == PIPE_FORMAT_R32_SINT || format == PIPE_FORMAT_R32_FLOAT; bool integer = format != PIPE_FORMAT_R32_FLOAT; if (img_op == LP_IMG_ATOMIC) { switch (op) { case LLVMAtomicRMWBinOpAdd: case LLVMAtomicRMWBinOpSub: case LLVMAtomicRMWBinOpAnd: case LLVMAtomicRMWBinOpNand: case LLVMAtomicRMWBinOpOr: case LLVMAtomicRMWBinOpXor: case LLVMAtomicRMWBinOpMax: case LLVMAtomicRMWBinOpMin: case LLVMAtomicRMWBinOpUMax: case LLVMAtomicRMWBinOpUMin: valid &= integer; break; case LLVMAtomicRMWBinOpFAdd: case LLVMAtomicRMWBinOpFSub: #if LLVM_VERSION_MAJOR >= 15 case LLVMAtomicRMWBinOpFMax: case LLVMAtomicRMWBinOpFMin: #endif valid &= !integer; break; default: break; } } else { valid &= integer; } if (!valid) { atomic_result[0] = lp_build_zero(gallivm, type); return; } LLVMTypeRef ref_type = (format == PIPE_FORMAT_R32_FLOAT) ? LLVMFloatTypeInContext(gallivm->context) : LLVMInt32TypeInContext(gallivm->context); LLVMTypeRef atom_res_elem_type = LLVMVectorType(ref_type, type.length); LLVMValueRef atom_res = lp_build_alloca(gallivm, atom_res_elem_type, ""); offset = LLVMBuildGEP2(gallivm->builder, LLVMInt8TypeInContext(gallivm->context), base_ptr, &offset, 1, ""); struct lp_build_loop_state loop_state; lp_build_loop_begin(&loop_state, gallivm, lp_build_const_int32(gallivm, 0)); struct lp_build_if_state ifthen; LLVMValueRef cond; LLVMValueRef packed = rgba_in[0], packed2 = rgba2_in[0]; LLVMValueRef should_store_mask = LLVMBuildAnd(gallivm->builder, exec_mask, LLVMBuildNot(gallivm->builder, out_of_bounds, ""), "store_mask"); assert(exec_mask); cond = LLVMBuildICmp(gallivm->builder, LLVMIntNE, should_store_mask, lp_build_const_int_vec(gallivm, type, 0), ""); cond = LLVMBuildExtractElement(gallivm->builder, cond, loop_state.counter, ""); lp_build_if(&ifthen, gallivm, cond); LLVMValueRef data = LLVMBuildExtractElement(gallivm->builder, packed, loop_state.counter, ""); LLVMValueRef cast_base_ptr = LLVMBuildExtractElement(gallivm->builder, offset, loop_state.counter, ""); cast_base_ptr = LLVMBuildBitCast(gallivm->builder, cast_base_ptr, LLVMPointerType(ref_type, 0), ""); data = LLVMBuildBitCast(gallivm->builder, data, ref_type, ""); if (img_op == LP_IMG_ATOMIC_CAS) { LLVMValueRef cas_src_ptr = LLVMBuildExtractElement(gallivm->builder, packed2, loop_state.counter, ""); LLVMValueRef cas_src = LLVMBuildBitCast(gallivm->builder, cas_src_ptr, ref_type, ""); data = LLVMBuildAtomicCmpXchg(gallivm->builder, cast_base_ptr, data, cas_src, LLVMAtomicOrderingSequentiallyConsistent, LLVMAtomicOrderingSequentiallyConsistent, false); data = LLVMBuildExtractValue(gallivm->builder, data, 0, ""); } else { data = LLVMBuildAtomicRMW(gallivm->builder, op, cast_base_ptr, data, LLVMAtomicOrderingSequentiallyConsistent, false); } LLVMValueRef temp_res = LLVMBuildLoad2(gallivm->builder, atom_res_elem_type, atom_res, ""); temp_res = LLVMBuildInsertElement(gallivm->builder, temp_res, data, loop_state.counter, ""); LLVMBuildStore(gallivm->builder, temp_res, atom_res); lp_build_endif(&ifthen); lp_build_loop_end_cond(&loop_state, lp_build_const_int32(gallivm, type.length), NULL, LLVMIntUGE); atomic_result[0] = LLVMBuildLoad2(gallivm->builder, atom_res_elem_type, atom_res, ""); } static void lp_build_img_op_no_format(struct gallivm_state *gallivm, const struct lp_img_params *params, LLVMValueRef outdata[4]) { /* * If there's nothing bound, format is NONE, and we must return * all zero as mandated by d3d10 in this case. */ if (params->img_op != LP_IMG_STORE) { LLVMValueRef zero = lp_build_zero(gallivm, params->type); for (unsigned chan = 0; chan < (params->img_op == LP_IMG_LOAD ? 4 : 1); chan++) { outdata[chan] = zero; } } } void lp_build_img_op_soa(const struct lp_static_texture_state *static_texture_state, struct lp_sampler_dynamic_state *dynamic_state, struct gallivm_state *gallivm, const struct lp_img_params *params, LLVMValueRef *outdata) { const enum pipe_texture_target target = params->target; const unsigned dims = texture_dims(target); const struct util_format_description *format_desc = util_format_description(static_texture_state->format); const struct util_format_description *res_format_desc = util_format_description(static_texture_state->res_format); LLVMValueRef x = params->coords[0], y = params->coords[1], z = params->coords[2]; LLVMValueRef row_stride_vec = NULL, img_stride_vec = NULL; /** regular scalar int type */ struct lp_type int_coord_type = lp_uint_type(params->type); struct lp_build_context int_coord_bld; lp_build_context_init(&int_coord_bld, gallivm, int_coord_type); if (static_texture_state->format == PIPE_FORMAT_NONE) { lp_build_img_op_no_format(gallivm, params, outdata); return; } LLVMValueRef row_stride = dynamic_state->row_stride(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL, NULL); LLVMValueRef img_stride = dynamic_state->img_stride(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL, NULL); LLVMValueRef base_ptr = dynamic_state->base_ptr(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL); LLVMValueRef width = dynamic_state->width(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL); LLVMValueRef height = dynamic_state->height(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL); height = LLVMBuildZExt(gallivm->builder, height, int_coord_bld.elem_type, ""); LLVMValueRef depth = dynamic_state->depth(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL); depth = LLVMBuildZExt(gallivm->builder, depth, int_coord_bld.elem_type, ""); bool layer_coord = has_layer_coord(target); width = lp_build_scale_view_dim(gallivm, width, res_format_desc->block.width, format_desc->block.width); width = lp_build_broadcast_scalar(&int_coord_bld, width); if (dims >= 2) { height = lp_build_scale_view_dim(gallivm, height, res_format_desc->block.height, format_desc->block.height); height = lp_build_broadcast_scalar(&int_coord_bld, height); row_stride_vec = lp_build_broadcast_scalar(&int_coord_bld, row_stride); } if (dims >= 3 || layer_coord) { depth = lp_build_broadcast_scalar(&int_coord_bld, depth); img_stride_vec = lp_build_broadcast_scalar(&int_coord_bld, img_stride); } LLVMValueRef out_of_bounds = int_coord_bld.zero; LLVMValueRef out1 = lp_build_cmp(&int_coord_bld, PIPE_FUNC_GEQUAL, x, width); out_of_bounds = lp_build_or(&int_coord_bld, out_of_bounds, out1); if (dims >= 2) { out1 = lp_build_cmp(&int_coord_bld, PIPE_FUNC_GEQUAL, y, height); out_of_bounds = lp_build_or(&int_coord_bld, out_of_bounds, out1); } if (dims >= 3 || layer_coord) { out1 = lp_build_cmp(&int_coord_bld, PIPE_FUNC_GEQUAL, z, depth); out_of_bounds = lp_build_or(&int_coord_bld, out_of_bounds, out1); } LLVMValueRef offset, i, j; if (static_texture_state->tiled) { lp_build_tiled_sample_offset(&int_coord_bld, format_desc->format, static_texture_state, x, y, z, width, height, img_stride_vec, &offset, &i, &j); } else { lp_build_sample_offset(&int_coord_bld, format_desc, x, y, z, row_stride_vec, img_stride_vec, &offset, &i, &j); } if (params->ms_index && static_texture_state->level_zero_only) { LLVMValueRef num_samples = dynamic_state->last_level(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL); num_samples = LLVMBuildZExt(gallivm->builder, num_samples, int_coord_bld.elem_type, ""); LLVMValueRef sample_stride = dynamic_state->sample_stride(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL); lp_build_sample_ms_offset(&int_coord_bld, params->ms_index, num_samples, sample_stride, &offset, &out_of_bounds); } if (params->img_op == LP_IMG_LOAD || params->img_op == LP_IMG_LOAD_SPARSE) { struct lp_type texel_type = lp_build_texel_type(params->type, format_desc); if (params->img_op == LP_IMG_LOAD_SPARSE && static_texture_state->tiled) { LLVMValueRef base_offset = dynamic_state->base_offset(gallivm, params->resources_type, params->resources_ptr, params->image_index, NULL); base_offset = lp_build_broadcast_scalar(&int_coord_bld, base_offset); LLVMValueRef full_offset = LLVMBuildAdd(gallivm->builder, base_offset, offset, ""); lp_build_gather_resident(&int_coord_bld, dynamic_state, params->resources_type, params->resources_ptr, full_offset, &outdata[4]); } offset = lp_build_andnot(&int_coord_bld, offset, out_of_bounds); struct lp_build_context texel_bld; lp_build_context_init(&texel_bld, gallivm, texel_type); lp_build_fetch_rgba_soa(gallivm, format_desc, texel_type, true, base_ptr, offset, i, j, NULL, outdata); for (unsigned chan = 0; chan < 3; chan++) { outdata[chan] = lp_build_select(&texel_bld, out_of_bounds, texel_bld.zero, outdata[chan]); } if (format_desc->swizzle[3] == PIPE_SWIZZLE_1) { outdata[3] = lp_build_select(&texel_bld, out_of_bounds, texel_bld.one, outdata[3]); } else { outdata[3] = lp_build_select(&texel_bld, out_of_bounds, texel_bld.zero, outdata[3]); } } else if (params->img_op == LP_IMG_STORE) { lp_build_store_rgba_soa(gallivm, format_desc, params->type, params->exec_mask, base_ptr, offset, out_of_bounds, params->indata); } else { lp_build_do_atomic_soa(gallivm, format_desc, params->type, params->exec_mask, base_ptr, offset, out_of_bounds, params->img_op, params->op, params->indata, params->indata2, outdata); } } /* * These functions are for indirect texture access suppoort. * * Indirect textures are implemented using a switch statement, that * takes the texture index and jumps to the sampler functions for * that texture unit. */ /* * Initialise an indexed sampler switch block. * * This sets up the switch_info state and adds the LLVM flow control pieces. */ void lp_build_sample_array_init_soa(struct lp_build_sample_array_switch *switch_info, struct gallivm_state *gallivm, const struct lp_sampler_params *params, LLVMValueRef idx, unsigned base, unsigned range) { switch_info->gallivm = gallivm; switch_info->params = *params; switch_info->base = base; switch_info->range = range; /* for generating the switch functions we don't want the texture index * offset */ switch_info->params.texture_index_offset = 0; LLVMBasicBlockRef initial_block = LLVMGetInsertBlock(gallivm->builder); switch_info->merge_ref = lp_build_insert_new_block(gallivm, "texmerge"); switch_info->switch_ref = LLVMBuildSwitch(gallivm->builder, idx, switch_info->merge_ref, range - base); LLVMTypeRef val_type[4]; val_type[0] = val_type[1] = val_type[2] = val_type[3] = lp_build_vec_type(gallivm, params->type); LLVMTypeRef ret_type = LLVMStructTypeInContext(gallivm->context, val_type, 4, 0); LLVMValueRef undef_val = LLVMGetUndef(ret_type); LLVMPositionBuilderAtEnd(gallivm->builder, switch_info->merge_ref); switch_info->phi = LLVMBuildPhi(gallivm->builder, ret_type, ""); LLVMAddIncoming(switch_info->phi, &undef_val, &initial_block, 1); } /* * Add an individual entry to the indirect texture switch. * * This builds the sample function and links a case for it into the switch * statement. */ void lp_build_sample_array_case_soa(struct lp_build_sample_array_switch *switch_info, int idx, const struct lp_static_texture_state *static_texture_state, const struct lp_static_sampler_state *static_sampler_state, struct lp_sampler_dynamic_state *dynamic_texture_state) { struct gallivm_state *gallivm = switch_info->gallivm; LLVMBasicBlockRef this_block = lp_build_insert_new_block(gallivm, "texblock"); LLVMAddCase(switch_info->switch_ref, LLVMConstInt(LLVMInt32TypeInContext(gallivm->context), idx, 0), this_block); LLVMPositionBuilderAtEnd(gallivm->builder, this_block); LLVMValueRef tex_ret; lp_build_sample_soa_func(gallivm, static_texture_state, static_sampler_state, dynamic_texture_state, &switch_info->params, idx, idx, &tex_ret); LLVMAddIncoming(switch_info->phi, &tex_ret, &this_block, 1); LLVMBuildBr(gallivm->builder, switch_info->merge_ref); } /* * Finish a switch statement. * * This handles extract the results from the switch. */ void lp_build_sample_array_fini_soa(struct lp_build_sample_array_switch *switch_info) { struct gallivm_state *gallivm = switch_info->gallivm; LLVMPositionBuilderAtEnd(gallivm->builder, switch_info->merge_ref); for (unsigned i = 0; i < 4; i++) { switch_info->params.texel[i] = LLVMBuildExtractValue(gallivm->builder, switch_info->phi, i, ""); } } void lp_build_image_op_switch_soa(struct lp_build_img_op_array_switch *switch_info, struct gallivm_state *gallivm, const struct lp_img_params *params, LLVMValueRef idx, unsigned base, unsigned range) { switch_info->gallivm = gallivm; switch_info->params = *params; switch_info->base = base; switch_info->range = range; /* for generating the switch functions we don't want the texture index * offset */ switch_info->params.image_index_offset = 0; LLVMBasicBlockRef initial_block = LLVMGetInsertBlock(gallivm->builder); switch_info->merge_ref = lp_build_insert_new_block(gallivm, "imgmerge"); switch_info->switch_ref = LLVMBuildSwitch(gallivm->builder, idx, switch_info->merge_ref, range - base); if (params->img_op != LP_IMG_STORE) { LLVMTypeRef ret_type = lp_build_vec_type(gallivm, params->type); LLVMValueRef undef_val = LLVMGetUndef(ret_type); LLVMPositionBuilderAtEnd(gallivm->builder, switch_info->merge_ref); for (unsigned i = 0; i < ((params->img_op == LP_IMG_LOAD) ? 4 : 1); i++) { switch_info->phi[i] = LLVMBuildPhi(gallivm->builder, ret_type, ""); LLVMAddIncoming(switch_info->phi[i], &undef_val, &initial_block, 1); } } } void lp_build_image_op_array_case(struct lp_build_img_op_array_switch *switch_info, int idx, const struct lp_static_texture_state *static_texture_state, struct lp_sampler_dynamic_state *dynamic_state) { struct gallivm_state *gallivm = switch_info->gallivm; LLVMBasicBlockRef this_block = lp_build_insert_new_block(gallivm, "img"); LLVMValueRef tex_ret[4]; LLVMAddCase(switch_info->switch_ref, lp_build_const_int32(gallivm, idx), this_block); LLVMPositionBuilderAtEnd(gallivm->builder, this_block); switch_info->params.image_index = idx; lp_build_img_op_soa(static_texture_state, dynamic_state, switch_info->gallivm, &switch_info->params, tex_ret); if (switch_info->params.img_op != LP_IMG_STORE) { for (unsigned i = 0; i < ((switch_info->params.img_op == LP_IMG_LOAD) ? 4 : 1); i++) { tex_ret[i] = LLVMBuildBitCast(gallivm->builder, tex_ret[i], lp_build_vec_type(gallivm, switch_info->params.type), ""); } this_block = LLVMGetInsertBlock(gallivm->builder); for (unsigned i = 0; i < ((switch_info->params.img_op == LP_IMG_LOAD) ? 4 : 1); i++) { LLVMAddIncoming(switch_info->phi[i], &tex_ret[i], &this_block, 1); } } LLVMBuildBr(gallivm->builder, switch_info->merge_ref); } void lp_build_image_op_array_fini_soa(struct lp_build_img_op_array_switch *switch_info) { struct gallivm_state *gallivm = switch_info->gallivm; LLVMPositionBuilderAtEnd(gallivm->builder, switch_info->merge_ref); if (switch_info->params.img_op != LP_IMG_STORE) { for (unsigned i = 0; i < ((switch_info->params.img_op == LP_IMG_LOAD) ? 4 : 1); i++) { switch_info->params.outdata[i] = switch_info->phi[i]; } } }