/************************************************************************** * * Copyright 2008 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. * **************************************************************************/ #include "util/u_memory.h" #include "util/u_math.h" #include "util/u_prim.h" #include "pipe/p_context.h" #include "draw/draw_context.h" #include "draw/draw_private.h" #include "draw/draw_pt.h" #include "draw/draw_vs.h" #define DO_CLIP_XY 0x1 #define DO_CLIP_FULL_Z 0x2 #define DO_CLIP_HALF_Z 0x4 #define DO_CLIP_USER 0x8 #define DO_VIEWPORT 0x10 #define DO_EDGEFLAG 0x20 #define DO_CLIP_XY_GUARD_BAND 0x40 struct pt_post_vs { struct draw_context *draw; unsigned flags; bool (*run)(struct pt_post_vs *pvs, struct draw_vertex_info *info, const struct draw_prim_info *prim_info); }; static inline void initialize_vertex_header(struct vertex_header *header) { header->clipmask = 0; header->edgeflag = 1; header->pad = 0; header->vertex_id = UNDEFINED_VERTEX_ID; } static inline float dot4(const float *a, const float *b) { return (a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3]); } #define FLAGS (0) #define TAG(x) x##_none #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_XY | DO_CLIP_FULL_Z | DO_VIEWPORT) #define TAG(x) x##_xy_fullz_viewport #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_XY | DO_CLIP_HALF_Z | DO_VIEWPORT) #define TAG(x) x##_xy_halfz_viewport #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_XY_GUARD_BAND | DO_CLIP_HALF_Z | DO_VIEWPORT) #define TAG(x) x##_xy_gb_halfz_viewport #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_XY_GUARD_BAND | DO_CLIP_FULL_Z | DO_VIEWPORT) #define TAG(x) x##_xy_gb_fullz_viewport #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_FULL_Z | DO_VIEWPORT) #define TAG(x) x##_fullz_viewport #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_HALF_Z | DO_VIEWPORT) #define TAG(x) x##_halfz_viewport #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_XY | DO_CLIP_FULL_Z | DO_CLIP_USER | DO_VIEWPORT) #define TAG(x) x##_xy_fullz_user_viewport #include "draw_cliptest_tmp.h" #define FLAGS (DO_CLIP_XY | DO_CLIP_FULL_Z | DO_CLIP_USER | DO_VIEWPORT | DO_EDGEFLAG) #define TAG(x) x##_xy_fullz_user_viewport_edgeflag #include "draw_cliptest_tmp.h" /* Don't want to create 64 versions of this function, so catch the * less common ones here. This is looking like something which should * be code-generated, perhaps appended to the end of the vertex * shader. */ #define FLAGS (pvs->flags) #define TAG(x) x##_generic #include "draw_cliptest_tmp.h" bool draw_pt_post_vs_run(struct pt_post_vs *pvs, struct draw_vertex_info *info, const struct draw_prim_info *prim_info) { return pvs->run(pvs, info, prim_info); } void draw_pt_post_vs_prepare(struct pt_post_vs *pvs, bool clip_xy, bool clip_z, bool clip_user, bool guard_band, bool bypass_viewport, bool clip_halfz, bool need_edgeflags) { pvs->flags = 0; if (clip_xy && !guard_band) { pvs->flags |= DO_CLIP_XY; ASSIGN_4V(pvs->draw->plane[0], -1, 0, 0, 1); ASSIGN_4V(pvs->draw->plane[1], 1, 0, 0, 1); ASSIGN_4V(pvs->draw->plane[2], 0, -1, 0, 1); ASSIGN_4V(pvs->draw->plane[3], 0, 1, 0, 1); } else if (clip_xy && guard_band) { pvs->flags |= DO_CLIP_XY_GUARD_BAND; ASSIGN_4V(pvs->draw->plane[0], -0.5, 0, 0, 1); ASSIGN_4V(pvs->draw->plane[1], 0.5, 0, 0, 1); ASSIGN_4V(pvs->draw->plane[2], 0, -0.5, 0, 1); ASSIGN_4V(pvs->draw->plane[3], 0, 0.5, 0, 1); } if (clip_z) { if (clip_halfz) { pvs->flags |= DO_CLIP_HALF_Z; ASSIGN_4V(pvs->draw->plane[4], 0, 0, 1, 0); } else { pvs->flags |= DO_CLIP_FULL_Z; ASSIGN_4V(pvs->draw->plane[4], 0, 0, 1, 1); } } if (clip_user) pvs->flags |= DO_CLIP_USER; if (!bypass_viewport) pvs->flags |= DO_VIEWPORT; if (need_edgeflags) pvs->flags |= DO_EDGEFLAG; /* Now select the relevant function: */ switch (pvs->flags) { case 0: pvs->run = do_cliptest_none; break; case DO_CLIP_XY | DO_CLIP_FULL_Z | DO_VIEWPORT: pvs->run = do_cliptest_xy_fullz_viewport; break; case DO_CLIP_XY | DO_CLIP_HALF_Z | DO_VIEWPORT: pvs->run = do_cliptest_xy_halfz_viewport; break; case DO_CLIP_XY_GUARD_BAND | DO_CLIP_HALF_Z | DO_VIEWPORT: pvs->run = do_cliptest_xy_gb_halfz_viewport; break; case DO_CLIP_XY_GUARD_BAND | DO_CLIP_FULL_Z | DO_VIEWPORT: pvs->run = do_cliptest_xy_gb_fullz_viewport; break; case DO_CLIP_FULL_Z | DO_VIEWPORT: pvs->run = do_cliptest_fullz_viewport; break; case DO_CLIP_HALF_Z | DO_VIEWPORT: pvs->run = do_cliptest_halfz_viewport; break; case DO_CLIP_XY | DO_CLIP_FULL_Z | DO_CLIP_USER | DO_VIEWPORT: pvs->run = do_cliptest_xy_fullz_user_viewport; break; case (DO_CLIP_XY | DO_CLIP_FULL_Z | DO_CLIP_USER | DO_VIEWPORT | DO_EDGEFLAG): pvs->run = do_cliptest_xy_fullz_user_viewport_edgeflag; break; default: pvs->run = do_cliptest_generic; break; } } struct pt_post_vs * draw_pt_post_vs_create(struct draw_context *draw) { struct pt_post_vs *pvs = CALLOC_STRUCT(pt_post_vs); if (!pvs) return NULL; pvs->draw = draw; return pvs; } void draw_pt_post_vs_destroy(struct pt_post_vs *pvs) { FREE(pvs); }