/* * Mesa 3-D graphics library * * Copyright (C) 2010 LunarG Inc. * * 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, sublicense, * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS 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. * * Authors: * Chia-I Wu */ #include "main/mtypes.h" #include "main/extensions.h" #include "main/context.h" #include "main/debug_output.h" #include "main/framebuffer.h" #include "main/glthread.h" #include "main/texobj.h" #include "main/teximage.h" #include "main/texstate.h" #include "main/errors.h" #include "main/framebuffer.h" #include "main/fbobject.h" #include "main/renderbuffer.h" #include "main/version.h" #include "util/hash_table.h" #include "st_texture.h" #include "st_context.h" #include "st_debug.h" #include "st_extensions.h" #include "st_format.h" #include "st_cb_bitmap.h" #include "st_cb_flush.h" #include "st_manager.h" #include "st_sampler_view.h" #include "st_util.h" #include "pipe/p_context.h" #include "pipe/p_screen.h" #include "util/format/u_format.h" #include "util/u_helpers.h" #include "util/u_pointer.h" #include "util/u_inlines.h" #include "util/u_atomic.h" #include "util/u_surface.h" #include "util/list.h" #include "util/u_memory.h" #include "util/perf/cpu_trace.h" struct hash_table; struct st_screen { struct hash_table *drawable_ht; /* pipe_frontend_drawable objects hash table */ simple_mtx_t st_mutex; }; /** * Cast wrapper to convert a struct gl_framebuffer to an gl_framebuffer. * Return NULL if the struct gl_framebuffer is a user-created framebuffer. * We'll only return non-null for window system framebuffers. * Note that this function may fail. */ static inline struct gl_framebuffer * st_ws_framebuffer(struct gl_framebuffer *fb) { /* FBO cannot be casted. See st_new_framebuffer */ if (fb && _mesa_is_winsys_fbo(fb) && fb != _mesa_get_incomplete_framebuffer()) return fb; return NULL; } /** * Map an attachment to a buffer index. */ static inline gl_buffer_index attachment_to_buffer_index(enum st_attachment_type statt) { gl_buffer_index index; switch (statt) { case ST_ATTACHMENT_FRONT_LEFT: index = BUFFER_FRONT_LEFT; break; case ST_ATTACHMENT_BACK_LEFT: index = BUFFER_BACK_LEFT; break; case ST_ATTACHMENT_FRONT_RIGHT: index = BUFFER_FRONT_RIGHT; break; case ST_ATTACHMENT_BACK_RIGHT: index = BUFFER_BACK_RIGHT; break; case ST_ATTACHMENT_DEPTH_STENCIL: index = BUFFER_DEPTH; break; case ST_ATTACHMENT_ACCUM: index = BUFFER_ACCUM; break; default: index = BUFFER_COUNT; break; } return index; } /** * Map a buffer index to an attachment. */ static inline enum st_attachment_type buffer_index_to_attachment(gl_buffer_index index) { enum st_attachment_type statt; switch (index) { case BUFFER_FRONT_LEFT: statt = ST_ATTACHMENT_FRONT_LEFT; break; case BUFFER_BACK_LEFT: statt = ST_ATTACHMENT_BACK_LEFT; break; case BUFFER_FRONT_RIGHT: statt = ST_ATTACHMENT_FRONT_RIGHT; break; case BUFFER_BACK_RIGHT: statt = ST_ATTACHMENT_BACK_RIGHT; break; case BUFFER_DEPTH: statt = ST_ATTACHMENT_DEPTH_STENCIL; break; case BUFFER_ACCUM: statt = ST_ATTACHMENT_ACCUM; break; default: statt = ST_ATTACHMENT_INVALID; break; } return statt; } /** * Make sure a context picks up the latest cached state of the * drawables it binds to. */ static void st_context_validate(struct st_context *st, struct gl_framebuffer *stdraw, struct gl_framebuffer *stread) { if (stdraw && stdraw->stamp != st->draw_stamp) { st->ctx->NewDriverState |= ST_NEW_FRAMEBUFFER; _mesa_resize_framebuffer(st->ctx, stdraw, stdraw->Width, stdraw->Height); st->draw_stamp = stdraw->stamp; } if (stread && stread->stamp != st->read_stamp) { if (stread != stdraw) { st->ctx->NewDriverState |= ST_NEW_FRAMEBUFFER; _mesa_resize_framebuffer(st->ctx, stread, stread->Width, stread->Height); } st->read_stamp = stread->stamp; } } void st_set_ws_renderbuffer_surface(struct gl_renderbuffer *rb, struct pipe_surface *surf) { pipe_surface_reference(&rb->surface_srgb, NULL); pipe_surface_reference(&rb->surface_linear, NULL); if (util_format_is_srgb(surf->format)) pipe_surface_reference(&rb->surface_srgb, surf); else pipe_surface_reference(&rb->surface_linear, surf); rb->surface = surf; /* just assign, don't ref */ pipe_resource_reference(&rb->texture, surf->texture); rb->Width = surf->width; rb->Height = surf->height; } /** * Validate a framebuffer to make sure up-to-date pipe_textures are used. * The context is only used for creating pipe surfaces and for calling * _mesa_resize_framebuffer(). * (That should probably be rethought, since those surfaces become * drawable state, not context state, and can be freed by another pipe * context). */ static void st_framebuffer_validate(struct gl_framebuffer *stfb, struct st_context *st) { struct pipe_resource *textures[ST_ATTACHMENT_COUNT]; struct pipe_resource *resolve = NULL; uint width, height; unsigned i; bool changed = false; int32_t new_stamp; new_stamp = p_atomic_read(&stfb->drawable->stamp); if (stfb->drawable_stamp == new_stamp) return; memset(textures, 0, stfb->num_statts * sizeof(textures[0])); /* validate the fb */ do { if (!stfb->drawable->validate(st, stfb->drawable, stfb->statts, stfb->num_statts, textures, &resolve)) return; stfb->drawable_stamp = new_stamp; new_stamp = p_atomic_read(&stfb->drawable->stamp); } while(stfb->drawable_stamp != new_stamp); width = stfb->Width; height = stfb->Height; for (i = 0; i < stfb->num_statts; i++) { struct gl_renderbuffer *rb; struct pipe_surface *ps, surf_tmpl; gl_buffer_index idx; if (!textures[i]) continue; idx = attachment_to_buffer_index(stfb->statts[i]); if (idx >= BUFFER_COUNT) { pipe_resource_reference(&textures[i], NULL); continue; } rb = stfb->Attachment[idx].Renderbuffer; assert(rb); if (rb->texture == textures[i] && rb->Width == textures[i]->width0 && rb->Height == textures[i]->height0) { pipe_resource_reference(&textures[i], NULL); continue; } u_surface_default_template(&surf_tmpl, textures[i]); ps = st->pipe->create_surface(st->pipe, textures[i], &surf_tmpl); if (ps) { st_set_ws_renderbuffer_surface(rb, ps); pipe_surface_reference(&ps, NULL); changed = true; width = rb->Width; height = rb->Height; } pipe_resource_reference(&textures[i], NULL); } changed |= resolve != stfb->resolve; /* ref is removed here */ pipe_resource_reference(&stfb->resolve, NULL); /* ref is taken here */ stfb->resolve = resolve; if (changed) { ++stfb->stamp; _mesa_resize_framebuffer(st->ctx, stfb, width, height); } } /** * Return true if the visual has the specified buffers. */ static inline bool st_visual_have_buffers(const struct st_visual *visual, unsigned mask) { return ((visual->buffer_mask & mask) == mask); } /** * Update the attachments to validate by looping the existing renderbuffers. */ static void st_framebuffer_update_attachments(struct gl_framebuffer *stfb) { gl_buffer_index idx; stfb->num_statts = 0; for (enum st_attachment_type i = 0; i < ST_ATTACHMENT_COUNT; i++) stfb->statts[i] = ST_ATTACHMENT_INVALID; for (idx = 0; idx < BUFFER_COUNT; idx++) { struct gl_renderbuffer *rb; enum st_attachment_type statt; rb = stfb->Attachment[idx].Renderbuffer; if (!rb || rb->software) continue; statt = buffer_index_to_attachment(idx); if (statt != ST_ATTACHMENT_INVALID && st_visual_have_buffers(stfb->drawable->visual, 1 << statt)) stfb->statts[stfb->num_statts++] = statt; } stfb->stamp++; } /** * Allocate a renderbuffer for an on-screen window (not a user-created * renderbuffer). The window system code determines the format. */ static struct gl_renderbuffer * st_new_renderbuffer_fb(enum pipe_format format, unsigned samples, bool sw) { struct gl_renderbuffer *rb; rb = CALLOC_STRUCT(gl_renderbuffer); if (!rb) { _mesa_error(NULL, GL_OUT_OF_MEMORY, "creating renderbuffer"); return NULL; } _mesa_init_renderbuffer(rb, 0); rb->NumSamples = samples; rb->NumStorageSamples = samples; rb->Format = st_pipe_format_to_mesa_format(format); rb->_BaseFormat = _mesa_get_format_base_format(rb->Format); rb->software = sw; switch (format) { case PIPE_FORMAT_B10G10R10A2_UNORM: case PIPE_FORMAT_R10G10B10A2_UNORM: rb->InternalFormat = GL_RGB10_A2; break; case PIPE_FORMAT_R10G10B10X2_UNORM: case PIPE_FORMAT_B10G10R10X2_UNORM: rb->InternalFormat = GL_RGB10; break; case PIPE_FORMAT_R8G8B8A8_UNORM: case PIPE_FORMAT_B8G8R8A8_UNORM: case PIPE_FORMAT_A8R8G8B8_UNORM: rb->InternalFormat = GL_RGBA8; break; case PIPE_FORMAT_R8G8B8X8_UNORM: case PIPE_FORMAT_B8G8R8X8_UNORM: case PIPE_FORMAT_X8R8G8B8_UNORM: case PIPE_FORMAT_R8G8B8_UNORM: rb->InternalFormat = GL_RGB8; break; case PIPE_FORMAT_R8G8B8A8_SRGB: case PIPE_FORMAT_B8G8R8A8_SRGB: case PIPE_FORMAT_A8R8G8B8_SRGB: rb->InternalFormat = GL_SRGB8_ALPHA8; break; case PIPE_FORMAT_R8G8B8X8_SRGB: case PIPE_FORMAT_B8G8R8X8_SRGB: case PIPE_FORMAT_X8R8G8B8_SRGB: rb->InternalFormat = GL_SRGB8; break; case PIPE_FORMAT_B5G5R5A1_UNORM: rb->InternalFormat = GL_RGB5_A1; break; case PIPE_FORMAT_B4G4R4A4_UNORM: rb->InternalFormat = GL_RGBA4; break; case PIPE_FORMAT_B5G6R5_UNORM: rb->InternalFormat = GL_RGB565; break; case PIPE_FORMAT_Z16_UNORM: rb->InternalFormat = GL_DEPTH_COMPONENT16; break; case PIPE_FORMAT_Z32_UNORM: rb->InternalFormat = GL_DEPTH_COMPONENT32; break; case PIPE_FORMAT_Z24_UNORM_S8_UINT: case PIPE_FORMAT_S8_UINT_Z24_UNORM: rb->InternalFormat = GL_DEPTH24_STENCIL8_EXT; break; case PIPE_FORMAT_Z24X8_UNORM: case PIPE_FORMAT_X8Z24_UNORM: rb->InternalFormat = GL_DEPTH_COMPONENT24; break; case PIPE_FORMAT_S8_UINT: rb->InternalFormat = GL_STENCIL_INDEX8_EXT; break; case PIPE_FORMAT_R16G16B16A16_SNORM: /* accum buffer */ rb->InternalFormat = GL_RGBA16_SNORM; break; case PIPE_FORMAT_R16G16B16A16_UNORM: rb->InternalFormat = GL_RGBA16; break; case PIPE_FORMAT_R16G16B16_UNORM: rb->InternalFormat = GL_RGB16; break; case PIPE_FORMAT_R8_UNORM: rb->InternalFormat = GL_R8; break; case PIPE_FORMAT_R8G8_UNORM: rb->InternalFormat = GL_RG8; break; case PIPE_FORMAT_R16_UNORM: rb->InternalFormat = GL_R16; break; case PIPE_FORMAT_R16G16_UNORM: rb->InternalFormat = GL_RG16; break; case PIPE_FORMAT_R32G32B32A32_FLOAT: rb->InternalFormat = GL_RGBA32F; break; case PIPE_FORMAT_R32G32B32X32_FLOAT: case PIPE_FORMAT_R32G32B32_FLOAT: rb->InternalFormat = GL_RGB32F; break; case PIPE_FORMAT_R16G16B16A16_FLOAT: rb->InternalFormat = GL_RGBA16F; break; case PIPE_FORMAT_R16G16B16X16_FLOAT: rb->InternalFormat = GL_RGB16F; break; default: _mesa_problem(NULL, "Unexpected format %s in st_new_renderbuffer_fb", util_format_name(format)); FREE(rb); return NULL; } rb->surface = NULL; return rb; } /** * Add a renderbuffer to the framebuffer. The framebuffer is one that * corresponds to a window and is not a user-created FBO. */ static bool st_framebuffer_add_renderbuffer(struct gl_framebuffer *stfb, gl_buffer_index idx, bool prefer_srgb) { struct gl_renderbuffer *rb; enum pipe_format format; bool sw; assert(_mesa_is_winsys_fbo(stfb)); /* do not distinguish depth/stencil buffers */ if (idx == BUFFER_STENCIL) idx = BUFFER_DEPTH; switch (idx) { case BUFFER_DEPTH: format = stfb->drawable->visual->depth_stencil_format; sw = false; break; case BUFFER_ACCUM: format = stfb->drawable->visual->accum_format; sw = true; break; default: format = stfb->drawable->visual->color_format; if (prefer_srgb) format = util_format_srgb(format); sw = false; break; } if (format == PIPE_FORMAT_NONE) return false; rb = st_new_renderbuffer_fb(format, stfb->drawable->visual->samples, sw); if (!rb) return false; if (idx != BUFFER_DEPTH) { _mesa_attach_and_own_rb(stfb, idx, rb); return true; } bool rb_ownership_taken = false; if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0)) { _mesa_attach_and_own_rb(stfb, BUFFER_DEPTH, rb); rb_ownership_taken = true; } if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) { if (rb_ownership_taken) _mesa_attach_and_reference_rb(stfb, BUFFER_STENCIL, rb); else _mesa_attach_and_own_rb(stfb, BUFFER_STENCIL, rb); } return true; } /** * Intialize a struct gl_config from a visual. */ static void st_visual_to_context_mode(const struct st_visual *visual, struct gl_config *mode) { memset(mode, 0, sizeof(*mode)); if (st_visual_have_buffers(visual, ST_ATTACHMENT_BACK_LEFT_MASK)) mode->doubleBufferMode = GL_TRUE; if (st_visual_have_buffers(visual, ST_ATTACHMENT_FRONT_RIGHT_MASK | ST_ATTACHMENT_BACK_RIGHT_MASK)) mode->stereoMode = GL_TRUE; if (visual->color_format != PIPE_FORMAT_NONE) { mode->redBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 0); mode->greenBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 1); mode->blueBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 2); mode->alphaBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 3); mode->rgbBits = mode->redBits + mode->greenBits + mode->blueBits + mode->alphaBits; mode->sRGBCapable = util_format_is_srgb(visual->color_format); mode->floatMode = util_format_is_float(visual->color_format); } if (visual->depth_stencil_format != PIPE_FORMAT_NONE) { mode->depthBits = util_format_get_component_bits(visual->depth_stencil_format, UTIL_FORMAT_COLORSPACE_ZS, 0); mode->stencilBits = util_format_get_component_bits(visual->depth_stencil_format, UTIL_FORMAT_COLORSPACE_ZS, 1); } if (visual->accum_format != PIPE_FORMAT_NONE) { mode->accumRedBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 0); mode->accumGreenBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 1); mode->accumBlueBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 2); mode->accumAlphaBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 3); } if (visual->samples > 1) { mode->samples = visual->samples; } } /** * Create a framebuffer from a manager interface. */ static struct gl_framebuffer * st_framebuffer_create(struct st_context *st, struct pipe_frontend_drawable *drawable) { struct gl_framebuffer *stfb; struct gl_config mode; gl_buffer_index idx; bool prefer_srgb = false; if (!drawable) return NULL; stfb = CALLOC_STRUCT(gl_framebuffer); if (!stfb) return NULL; st_visual_to_context_mode(drawable->visual, &mode); /* * For desktop GL, sRGB framebuffer write is controlled by both the * capability of the framebuffer and GL_FRAMEBUFFER_SRGB. We should * advertise the capability when the pipe driver (and core Mesa) supports * it so that applications can enable sRGB write when they want to. * * This is not to be confused with GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB. When * the attribute is GLX_TRUE, it tells the st manager to pick a color * format such that util_format_srgb(visual->color_format) can be supported * by the pipe driver. We still need to advertise the capability here. * * For GLES, however, sRGB framebuffer write is initially only controlled * by the capability of the framebuffer, with GL_EXT_sRGB_write_control * control is given back to the applications, but GL_FRAMEBUFFER_SRGB is * still enabled by default since this is the behaviour when * EXT_sRGB_write_control is not available. Since GL_EXT_sRGB_write_control * brings GLES on par with desktop GLs EXT_framebuffer_sRGB, in mesa this * is also expressed by using the same extension flag */ if (_mesa_has_EXT_framebuffer_sRGB(st->ctx)) { struct pipe_screen *screen = st->screen; const enum pipe_format srgb_format = util_format_srgb(drawable->visual->color_format); if (srgb_format != PIPE_FORMAT_NONE && st_pipe_format_to_mesa_format(srgb_format) != MESA_FORMAT_NONE && screen->is_format_supported(screen, srgb_format, PIPE_TEXTURE_2D, drawable->visual->samples, drawable->visual->samples, (PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_RENDER_TARGET))) { mode.sRGBCapable = GL_TRUE; /* Since GL_FRAMEBUFFER_SRGB is enabled by default on GLES we must not * create renderbuffers with an sRGB format derived from the * visual->color_format, but we still want sRGB for desktop GL. */ prefer_srgb = _mesa_is_desktop_gl(st->ctx); } } _mesa_initialize_window_framebuffer(stfb, &mode); stfb->drawable = drawable; stfb->drawable_ID = drawable->ID; stfb->drawable_stamp = p_atomic_read(&drawable->stamp) - 1; /* add the color buffer */ idx = stfb->_ColorDrawBufferIndexes[0]; if (!st_framebuffer_add_renderbuffer(stfb, idx, prefer_srgb)) { FREE(stfb); return NULL; } st_framebuffer_add_renderbuffer(stfb, BUFFER_DEPTH, false); st_framebuffer_add_renderbuffer(stfb, BUFFER_ACCUM, false); stfb->stamp = 0; st_framebuffer_update_attachments(stfb); return stfb; } static uint32_t drawable_hash(const void *key) { return (uintptr_t)key; } static bool drawable_equal(const void *a, const void *b) { return (struct pipe_frontend_drawable *)a == (struct pipe_frontend_drawable *)b; } static bool drawable_lookup(struct pipe_frontend_screen *fscreen, const struct pipe_frontend_drawable *drawable) { struct st_screen *screen = (struct st_screen *)fscreen->st_screen; struct hash_entry *entry; assert(screen); assert(screen->drawable_ht); simple_mtx_lock(&screen->st_mutex); entry = _mesa_hash_table_search(screen->drawable_ht, drawable); simple_mtx_unlock(&screen->st_mutex); return entry != NULL; } static bool drawable_insert(struct pipe_frontend_screen *fscreen, struct pipe_frontend_drawable *drawable) { struct st_screen *screen = (struct st_screen *)fscreen->st_screen; struct hash_entry *entry; assert(screen); assert(screen->drawable_ht); simple_mtx_lock(&screen->st_mutex); entry = _mesa_hash_table_insert(screen->drawable_ht, drawable, drawable); simple_mtx_unlock(&screen->st_mutex); return entry != NULL; } static void drawable_remove(struct pipe_frontend_screen *fscreen, struct pipe_frontend_drawable *drawable) { struct st_screen *screen = (struct st_screen *)fscreen->st_screen; struct hash_entry *entry; if (!screen || !screen->drawable_ht) return; simple_mtx_lock(&screen->st_mutex); entry = _mesa_hash_table_search(screen->drawable_ht, drawable); if (!entry) goto unlock; _mesa_hash_table_remove(screen->drawable_ht, entry); unlock: simple_mtx_unlock(&screen->st_mutex); } /** * The framebuffer interface object is no longer valid. * Remove the object from the framebuffer interface hash table. */ void st_api_destroy_drawable(struct pipe_frontend_drawable *drawable) { if (!drawable) return; drawable_remove(drawable->fscreen, drawable); } /** * Purge the winsys buffers list to remove any references to * non-existing framebuffer interface objects. */ static void st_framebuffers_purge(struct st_context *st) { struct pipe_frontend_screen *fscreen = st->frontend_screen; struct gl_framebuffer *stfb, *next; assert(fscreen); LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) { struct pipe_frontend_drawable *drawable = stfb->drawable; assert(drawable); /** * If the corresponding framebuffer interface object no longer exists, * remove the framebuffer object from the context's winsys buffers list, * and unreference the framebuffer object, so its resources can be * deleted. */ if (!drawable_lookup(fscreen, drawable)) { list_del(&stfb->head); _mesa_reference_framebuffer(&stfb, NULL); } } } void st_context_flush(struct st_context *st, unsigned flags, struct pipe_fence_handle **fence, void (*before_flush_cb) (void*), void* args) { unsigned pipe_flags = 0; MESA_TRACE_FUNC(); if (flags & ST_FLUSH_END_OF_FRAME) pipe_flags |= PIPE_FLUSH_END_OF_FRAME; if (flags & ST_FLUSH_FENCE_FD) pipe_flags |= PIPE_FLUSH_FENCE_FD; /* We can do these in any order because FLUSH_VERTICES will also flush * the bitmap cache if there are any unflushed vertices. */ st_flush_bitmap_cache(st); FLUSH_VERTICES(st->ctx, 0, 0); /* Notify the caller that we're ready to flush */ if (before_flush_cb) before_flush_cb(args); st_flush(st, fence, pipe_flags); if ((flags & ST_FLUSH_WAIT) && fence && *fence) { st->screen->fence_finish(st->screen, NULL, *fence, OS_TIMEOUT_INFINITE); st->screen->fence_reference(st->screen, fence, NULL); } if (flags & ST_FLUSH_FRONT) st_manager_flush_frontbuffer(st); } /** * Replace the texture image of a texture object at the specified level. * * This is only for GLX_EXT_texture_from_pixmap and equivalent features * in EGL and WGL. */ bool st_context_teximage(struct st_context *st, GLenum target, int level, enum pipe_format pipe_format, struct pipe_resource *tex, bool mipmap) { struct gl_context *ctx = st->ctx; struct gl_texture_object *texObj; struct gl_texture_image *texImage; GLenum internalFormat; GLuint width, height, depth; texObj = _mesa_get_current_tex_object(ctx, target); _mesa_lock_texture(ctx, texObj); /* switch to surface based */ if (!texObj->surface_based) { _mesa_clear_texture_object(ctx, texObj, NULL); texObj->surface_based = GL_TRUE; } texImage = _mesa_get_tex_image(ctx, texObj, target, level); if (tex) { mesa_format texFormat = st_pipe_format_to_mesa_format(pipe_format); if (util_format_has_alpha(tex->format)) internalFormat = GL_RGBA; else internalFormat = GL_RGB; _mesa_init_teximage_fields(ctx, texImage, tex->width0, tex->height0, 1, 0, internalFormat, texFormat); width = tex->width0; height = tex->height0; depth = tex->depth0; /* grow the image size until we hit level = 0 */ while (level > 0) { if (width != 1) width <<= 1; if (height != 1) height <<= 1; if (depth != 1) depth <<= 1; level--; } } else { _mesa_clear_texture_image(ctx, texImage); width = height = depth = 0; } _mesa_update_texture_object_swizzle(ctx, texObj); pipe_resource_reference(&texObj->pt, tex); st_texture_release_all_sampler_views(st, texObj); pipe_resource_reference(&texImage->pt, tex); texObj->surface_format = pipe_format; texObj->needs_validation = true; _mesa_dirty_texobj(ctx, texObj); ctx->Shared->HasExternallySharedImages = true; _mesa_unlock_texture(ctx, texObj); return true; } /** * Invalidate states to notify the frontend that driver states have been * changed behind its back. */ void st_context_invalidate_state(struct st_context *st, unsigned flags) { struct gl_context *ctx = st->ctx; if (flags & ST_INVALIDATE_FS_SAMPLER_VIEWS) ctx->NewDriverState |= ST_NEW_FS_SAMPLER_VIEWS; if (flags & ST_INVALIDATE_FS_CONSTBUF0) ctx->NewDriverState |= ST_NEW_FS_CONSTANTS; if (flags & ST_INVALIDATE_VS_CONSTBUF0) ctx->NewDriverState |= ST_NEW_VS_CONSTANTS; if (flags & ST_INVALIDATE_VERTEX_BUFFERS) { ctx->Array.NewVertexElements = true; ctx->NewDriverState |= ST_NEW_VERTEX_ARRAYS; } if (flags & ST_INVALIDATE_FB_STATE) ctx->NewDriverState |= ST_NEW_FB_STATE; } void st_screen_destroy(struct pipe_frontend_screen *fscreen) { struct st_screen *screen = fscreen->st_screen; if (screen && screen->drawable_ht) { _mesa_hash_table_destroy(screen->drawable_ht, NULL); simple_mtx_destroy(&screen->st_mutex); FREE(screen); fscreen->st_screen = NULL; } } /** * Create a rendering context. */ struct st_context * st_api_create_context(struct pipe_frontend_screen *fscreen, const struct st_context_attribs *attribs, enum st_context_error *error, struct st_context *shared_ctx) { struct st_context *st; struct pipe_context *pipe; struct gl_config mode, *mode_ptr = &mode; bool no_error = false; _mesa_initialize(attribs->options.mesa_extension_override); /* Create a hash table for the framebuffer interface objects * if it has not been created for this st manager. */ if (fscreen->st_screen == NULL) { struct st_screen *screen; screen = CALLOC_STRUCT(st_screen); simple_mtx_init(&screen->st_mutex, mtx_plain); screen->drawable_ht = _mesa_hash_table_create(NULL, drawable_hash, drawable_equal); fscreen->st_screen = screen; } if (attribs->flags & ST_CONTEXT_FLAG_NO_ERROR) no_error = true; /* OpenGL ES 2.0+ does not support sampler state LOD bias. If we are creating * a GLES context, communicate that to the the driver to allow optimization. */ bool is_gles = attribs->profile == API_OPENGLES2; unsigned lod_bias_flag = is_gles ? PIPE_CONTEXT_NO_LOD_BIAS : 0; pipe = fscreen->screen->context_create(fscreen->screen, NULL, PIPE_CONTEXT_PREFER_THREADED | lod_bias_flag | attribs->context_flags); if (!pipe) { *error = ST_CONTEXT_ERROR_NO_MEMORY; return NULL; } st_visual_to_context_mode(&attribs->visual, &mode); if (attribs->visual.color_format == PIPE_FORMAT_NONE) mode_ptr = NULL; st = st_create_context(attribs->profile, pipe, mode_ptr, shared_ctx, &attribs->options, no_error, !!fscreen->validate_egl_image); if (!st) { *error = ST_CONTEXT_ERROR_NO_MEMORY; pipe->destroy(pipe); return NULL; } if (attribs->flags & ST_CONTEXT_FLAG_DEBUG) { if (!_mesa_set_debug_state_int(st->ctx, GL_DEBUG_OUTPUT, GL_TRUE)) { *error = ST_CONTEXT_ERROR_NO_MEMORY; return NULL; } st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT; } if (st->ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT) { _mesa_update_debug_callback(st->ctx); } if (attribs->flags & ST_CONTEXT_FLAG_FORWARD_COMPATIBLE) st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT; if (attribs->context_flags & PIPE_CONTEXT_ROBUST_BUFFER_ACCESS) { st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB; st->ctx->Const.RobustAccess = GL_TRUE; } if (attribs->context_flags & PIPE_CONTEXT_LOSE_CONTEXT_ON_RESET) { st->ctx->Const.ResetStrategy = GL_LOSE_CONTEXT_ON_RESET_ARB; st_install_device_reset_callback(st); } if (attribs->flags & ST_CONTEXT_FLAG_RELEASE_NONE) st->ctx->Const.ContextReleaseBehavior = GL_NONE; /* need to perform version check */ if (attribs->major > 1 || attribs->minor > 0) { /* Is the actual version less than the requested version? */ if (st->ctx->Version < attribs->major * 10U + attribs->minor) { *error = ST_CONTEXT_ERROR_BAD_VERSION; st_destroy_context(st); return NULL; } } st->can_scissor_clear = !!st->screen->get_param(st->screen, PIPE_CAP_CLEAR_SCISSORED); st->ctx->invalidate_on_gl_viewport = fscreen->get_param(fscreen, ST_MANAGER_BROKEN_INVALIDATE); st->frontend_screen = fscreen; if (st->ctx->IntelBlackholeRender && st->screen->get_param(st->screen, PIPE_CAP_FRONTEND_NOOP)) st->pipe->set_frontend_noop(st->pipe, st->ctx->IntelBlackholeRender); *error = ST_CONTEXT_SUCCESS; return st; } /** * Get the currently bound context in the calling thread. */ struct st_context * st_api_get_current(void) { GET_CURRENT_CONTEXT(ctx); return ctx ? ctx->st : NULL; } static struct gl_framebuffer * st_framebuffer_reuse_or_create(struct st_context *st, struct pipe_frontend_drawable *drawable) { struct gl_framebuffer *cur = NULL, *stfb = NULL; if (!drawable) return NULL; /* Check if there is already a framebuffer object for the specified * framebuffer interface in this context. If there is one, use it. */ LIST_FOR_EACH_ENTRY(cur, &st->winsys_buffers, head) { if (cur->drawable_ID == drawable->ID) { _mesa_reference_framebuffer(&stfb, cur); break; } } /* If there is not already a framebuffer object, create one */ if (stfb == NULL) { cur = st_framebuffer_create(st, drawable); if (cur) { /* add the referenced framebuffer interface object to * the framebuffer interface object hash table. */ if (!drawable_insert(drawable->fscreen, drawable)) { _mesa_reference_framebuffer(&cur, NULL); return NULL; } /* add to the context's winsys buffers list */ list_add(&cur->head, &st->winsys_buffers); _mesa_reference_framebuffer(&stfb, cur); } } return stfb; } /** * Bind the context to the calling thread with draw and read as drawables. * * The framebuffers might be NULL, meaning the context is surfaceless. */ bool st_api_make_current(struct st_context *st, struct pipe_frontend_drawable *stdrawi, struct pipe_frontend_drawable *streadi) { struct gl_framebuffer *stdraw, *stread; bool ret; if (st) { /* reuse or create the draw fb */ stdraw = st_framebuffer_reuse_or_create(st, stdrawi); if (streadi != stdrawi) { /* do the same for the read fb */ stread = st_framebuffer_reuse_or_create(st, streadi); } else { stread = NULL; /* reuse the draw fb for the read fb */ if (stdraw) _mesa_reference_framebuffer(&stread, stdraw); } /* If framebuffers were asked for, we'd better have allocated them */ if ((stdrawi && !stdraw) || (streadi && !stread)) return false; if (stdraw && stread) { st_framebuffer_validate(stdraw, st); if (stread != stdraw) st_framebuffer_validate(stread, st); ret = _mesa_make_current(st->ctx, stdraw, stread); st->draw_stamp = stdraw->stamp - 1; st->read_stamp = stread->stamp - 1; st_context_validate(st, stdraw, stread); } else { struct gl_framebuffer *incomplete = _mesa_get_incomplete_framebuffer(); ret = _mesa_make_current(st->ctx, incomplete, incomplete); } _mesa_reference_framebuffer(&stdraw, NULL); _mesa_reference_framebuffer(&stread, NULL); /* Purge the context's winsys_buffers list in case any * of the referenced drawables no longer exist. */ st_framebuffers_purge(st); } else { GET_CURRENT_CONTEXT(ctx); if (ctx) { /* Before releasing the context, release its associated * winsys buffers first. Then purge the context's winsys buffers list * to free the resources of any winsys buffers that no longer have * an existing drawable. */ ret = _mesa_make_current(ctx, NULL, NULL); st_framebuffers_purge(ctx->st); } ret = _mesa_make_current(NULL, NULL, NULL); } return ret; } /** * Flush the front buffer if the current context renders to the front buffer. */ void st_manager_flush_frontbuffer(struct st_context *st) { struct gl_framebuffer *stfb = st_ws_framebuffer(st->ctx->DrawBuffer); struct gl_renderbuffer *rb = NULL; if (!stfb) return; /* If the context uses a doublebuffered visual, but the buffer is * single-buffered, guess that it's a pbuffer, which doesn't need * flushing. */ if (st->ctx->Visual.doubleBufferMode && !stfb->Visual.doubleBufferMode) return; /* Check front buffer used at the GL API level. */ enum st_attachment_type statt = ST_ATTACHMENT_FRONT_LEFT; rb = stfb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer; if (!rb) { /* Check back buffer redirected by EGL_KHR_mutable_render_buffer. */ statt = ST_ATTACHMENT_BACK_LEFT; rb = stfb->Attachment[BUFFER_BACK_LEFT].Renderbuffer; } /* Do we have a front color buffer and has it been drawn to since last * frontbuffer flush? */ if (rb && rb->defined && stfb->drawable->flush_front(st, stfb->drawable, statt)) { rb->defined = GL_FALSE; /* Trigger an update of rb->defined on next draw */ st->ctx->NewDriverState |= ST_NEW_FB_STATE; } } /** * Re-validate the framebuffers. */ void st_manager_validate_framebuffers(struct st_context *st) { struct gl_framebuffer *stdraw = st_ws_framebuffer(st->ctx->DrawBuffer); struct gl_framebuffer *stread = st_ws_framebuffer(st->ctx->ReadBuffer); if (stdraw) st_framebuffer_validate(stdraw, st); if (stread && stread != stdraw) st_framebuffer_validate(stread, st); st_context_validate(st, stdraw, stread); } /** * Flush any outstanding swapbuffers on the current draw framebuffer. */ void st_manager_flush_swapbuffers(void) { GET_CURRENT_CONTEXT(ctx); struct st_context *st = (ctx) ? ctx->st : NULL; struct gl_framebuffer *stfb; if (!st) return; stfb = st_ws_framebuffer(ctx->DrawBuffer); if (!stfb || !stfb->drawable->flush_swapbuffers) return; stfb->drawable->flush_swapbuffers(st, stfb->drawable); } /** * Add a color renderbuffer on demand. The FBO must correspond to a window, * not a user-created FBO. */ bool st_manager_add_color_renderbuffer(struct gl_context *ctx, struct gl_framebuffer *fb, gl_buffer_index idx) { struct gl_framebuffer *stfb = st_ws_framebuffer(fb); /* FBO */ if (!stfb) return false; assert(_mesa_is_winsys_fbo(fb)); if (stfb->Attachment[idx].Renderbuffer) return true; switch (idx) { case BUFFER_FRONT_LEFT: case BUFFER_BACK_LEFT: case BUFFER_FRONT_RIGHT: case BUFFER_BACK_RIGHT: break; default: return false; } if (!st_framebuffer_add_renderbuffer(stfb, idx, stfb->Visual.sRGBCapable)) return false; st_framebuffer_update_attachments(stfb); /* * Force a call to the frontend manager to validate the * new renderbuffer. It might be that there is a window system * renderbuffer available. */ if (stfb->drawable) stfb->drawable_stamp = p_atomic_read(&stfb->drawable->stamp) - 1; st_invalidate_buffers(st_context(ctx)); return true; } static unsigned get_version(struct pipe_screen *screen, struct st_config_options *options, gl_api api) { struct gl_constants consts = {0}; struct gl_extensions extensions = {0}; GLuint version; if (_mesa_override_gl_version_contextless(&consts, &api, &version)) { return version; } _mesa_init_constants(&consts, api); _mesa_init_extensions(&extensions); st_init_limits(screen, &consts, &extensions, api); st_init_extensions(screen, &consts, &extensions, options, api); version = _mesa_get_version(&extensions, &consts, api); free(consts.SpirVExtensions); return version; } /** * Query supported OpenGL versions. (if applicable) * The format is (major*10+minor). */ void st_api_query_versions(struct pipe_frontend_screen *fscreen, struct st_config_options *options, int *gl_core_version, int *gl_compat_version, int *gl_es1_version, int *gl_es2_version) { *gl_core_version = get_version(fscreen->screen, options, API_OPENGL_CORE); *gl_compat_version = get_version(fscreen->screen, options, API_OPENGL_COMPAT); *gl_es1_version = get_version(fscreen->screen, options, API_OPENGLES); *gl_es2_version = get_version(fscreen->screen, options, API_OPENGLES2); } void st_manager_invalidate_drawables(struct gl_context *ctx) { struct gl_framebuffer *stdraw; struct gl_framebuffer *stread; /* * Normally we'd want the frontend manager to mark the drawables * invalid only when needed. This will force the frontend manager * to revalidate the drawable, rather than just update the context with * the latest cached drawable info. */ stdraw = st_ws_framebuffer(ctx->DrawBuffer); stread = st_ws_framebuffer(ctx->ReadBuffer); if (stdraw) stdraw->drawable_stamp = p_atomic_read(&stdraw->drawable->stamp) - 1; if (stread && stread != stdraw) stread->drawable_stamp = p_atomic_read(&stread->drawable->stamp) - 1; }