/************************************************************************** * * Copyright 2003 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 "main/glheader.h" #include "main/context.h" #include "main/extensions.h" #include "main/fbobject.h" #include "main/framebuffer.h" #include "main/imports.h" #include "main/points.h" #include "main/renderbuffer.h" #include "swrast/swrast.h" #include "swrast_setup/swrast_setup.h" #include "tnl/tnl.h" #include "drivers/common/driverfuncs.h" #include "drivers/common/meta.h" #include "intel_chipset.h" #include "intel_buffers.h" #include "intel_tex.h" #include "intel_batchbuffer.h" #include "intel_clear.h" #include "intel_extensions.h" #include "intel_pixel.h" #include "intel_regions.h" #include "intel_buffer_objects.h" #include "intel_fbo.h" #include "intel_bufmgr.h" #include "intel_screen.h" #include "intel_mipmap_tree.h" #include "utils.h" #include "util/debug.h" #include "util/ralloc.h" int INTEL_DEBUG = (0); const char *const i915_vendor_string = "Intel Open Source Technology Center"; const char * i915_get_renderer_string(unsigned deviceID) { const char *chipset; static char buffer[128]; switch (deviceID) { #undef CHIPSET #define CHIPSET(id, symbol, str) case id: chipset = str; break; #include "pci_ids/i915_pci_ids.h" default: chipset = "Unknown Intel Chipset"; break; } (void) driGetRendererString(buffer, chipset, 0); return buffer; } static const GLubyte * intelGetString(struct gl_context * ctx, GLenum name) { const struct intel_context *const intel = intel_context(ctx); switch (name) { case GL_VENDOR: return (GLubyte *) i915_vendor_string; case GL_RENDERER: return (GLubyte *) i915_get_renderer_string(intel->intelScreen->deviceID); default: return NULL; } } #define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer) static void intel_flush_front(struct gl_context *ctx) { struct intel_context *intel = intel_context(ctx); __DRIcontext *driContext = intel->driContext; __DRIdrawable *driDrawable = driContext->driDrawablePriv; __DRIscreen *const screen = intel->intelScreen->driScrnPriv; if (intel->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { if (flushFront(screen) && driDrawable && driDrawable->loaderPrivate) { flushFront(screen)(driDrawable, driDrawable->loaderPrivate); /* We set the dirty bit in intel_prepare_render() if we're * front buffer rendering once we get there. */ intel->front_buffer_dirty = false; } } } static void intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable); static unsigned intel_bits_per_pixel(const struct intel_renderbuffer *rb) { return _mesa_get_format_bytes(intel_rb_format(rb)) * 8; } static void intel_query_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, int *count); static void intel_process_dri2_buffer(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer *buffer, struct intel_renderbuffer *rb, const char *buffer_name); static void intel_update_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable) { __DRIbuffer *buffers = NULL; int i, count; const char *region_name; struct intel_renderbuffer *rb; struct gl_framebuffer *fb = drawable->driverPrivate; intel_query_dri2_buffers(intel, drawable, &buffers, &count); if (buffers == NULL) return; for (i = 0; i < count; i++) { switch (buffers[i].attachment) { case __DRI_BUFFER_FRONT_LEFT: rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); region_name = "dri2 front buffer"; break; case __DRI_BUFFER_FAKE_FRONT_LEFT: rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); region_name = "dri2 fake front buffer"; break; case __DRI_BUFFER_BACK_LEFT: rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); region_name = "dri2 back buffer"; break; case __DRI_BUFFER_DEPTH: case __DRI_BUFFER_HIZ: case __DRI_BUFFER_DEPTH_STENCIL: case __DRI_BUFFER_STENCIL: case __DRI_BUFFER_ACCUM: default: fprintf(stderr, "unhandled buffer attach event, attachment type %d\n", buffers[i].attachment); return; } intel_process_dri2_buffer(intel, drawable, &buffers[i], rb, region_name); } } void intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable) { struct intel_context *intel = context->driverPrivate; __DRIscreen *screen = intel->intelScreen->driScrnPriv; /* Set this up front, so that in case our buffers get invalidated * while we're getting new buffers, we don't clobber the stamp and * thus ignore the invalidate. */ drawable->lastStamp = drawable->dri2.stamp; if (unlikely(INTEL_DEBUG & DEBUG_DRI)) fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable); if (screen->image.loader) intel_update_image_buffers(intel, drawable); else intel_update_dri2_buffers(intel, drawable); driUpdateFramebufferSize(&intel->ctx, drawable); } /** * intel_prepare_render should be called anywhere that curent read/drawbuffer * state is required. */ void intel_prepare_render(struct intel_context *intel) { __DRIcontext *driContext = intel->driContext; __DRIdrawable *drawable; drawable = driContext->driDrawablePriv; if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) { if (drawable->lastStamp != drawable->dri2.stamp) intel_update_renderbuffers(driContext, drawable); intel_draw_buffer(&intel->ctx); driContext->dri2.draw_stamp = drawable->dri2.stamp; } drawable = driContext->driReadablePriv; if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) { if (drawable->lastStamp != drawable->dri2.stamp) intel_update_renderbuffers(driContext, drawable); driContext->dri2.read_stamp = drawable->dri2.stamp; } /* If we're currently rendering to the front buffer, the rendering * that will happen next will probably dirty the front buffer. So * mark it as dirty here. */ if (_mesa_is_front_buffer_drawing(intel->ctx.DrawBuffer)) intel->front_buffer_dirty = true; /* Wait for the swapbuffers before the one we just emitted, so we * don't get too many swaps outstanding for apps that are GPU-heavy * but not CPU-heavy. * * We're using intelDRI2Flush (called from the loader before * swapbuffer) and glFlush (for front buffer rendering) as the * indicator that a frame is done and then throttle when we get * here as we prepare to render the next frame. At this point for * round trips for swap/copy and getting new buffers are done and * we'll spend less time waiting on the GPU. * * Unfortunately, we don't have a handle to the batch containing * the swap, and getting our hands on that doesn't seem worth it, * so we just us the first batch we emitted after the last swap. */ if (intel->need_throttle && intel->first_post_swapbuffers_batch) { if (!intel->disable_throttling) drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch); drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); intel->first_post_swapbuffers_batch = NULL; intel->need_throttle = false; } } static void intel_noninvalidate_viewport(struct gl_context *ctx) { struct intel_context *intel = intel_context(ctx); __DRIcontext *driContext = intel->driContext; intelCalcViewport(ctx); if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { dri2InvalidateDrawable(driContext->driDrawablePriv); dri2InvalidateDrawable(driContext->driReadablePriv); } } static void intel_viewport(struct gl_context *ctx) { intelCalcViewport(ctx); } static const struct debug_control debug_control[] = { { "tex", DEBUG_TEXTURE}, { "state", DEBUG_STATE}, { "blit", DEBUG_BLIT}, { "mip", DEBUG_MIPTREE}, { "fall", DEBUG_PERF}, { "perf", DEBUG_PERF}, { "bat", DEBUG_BATCH}, { "pix", DEBUG_PIXEL}, { "buf", DEBUG_BUFMGR}, { "reg", DEBUG_REGION}, { "fbo", DEBUG_FBO}, { "fs", DEBUG_WM }, { "sync", DEBUG_SYNC}, { "dri", DEBUG_DRI }, { "stats", DEBUG_STATS }, { "wm", DEBUG_WM }, { "aub", DEBUG_AUB }, { NULL, 0 } }; static void intelInvalidateState(struct gl_context * ctx, GLuint new_state) { struct intel_context *intel = intel_context(ctx); if (ctx->swrast_context) _swrast_InvalidateState(ctx, new_state); _vbo_InvalidateState(ctx, new_state); intel->NewGLState |= new_state; if (intel->vtbl.invalidate_state) intel->vtbl.invalidate_state( intel, new_state ); } void intel_flush_rendering_to_batch(struct gl_context *ctx) { struct intel_context *intel = intel_context(ctx); if (intel->Fallback) _swrast_flush(ctx); INTEL_FIREVERTICES(intel); } void _intel_flush(struct gl_context *ctx, const char *file, int line) { struct intel_context *intel = intel_context(ctx); intel_flush_rendering_to_batch(ctx); if (intel->batch.used) _intel_batchbuffer_flush(intel, file, line); } static void intel_glFlush(struct gl_context *ctx) { struct intel_context *intel = intel_context(ctx); intel_flush(ctx); intel_flush_front(ctx); if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer)) intel->need_throttle = true; } void intelFinish(struct gl_context * ctx) { struct intel_context *intel = intel_context(ctx); intel_flush(ctx); intel_flush_front(ctx); if (intel->batch.last_bo) drm_intel_bo_wait_rendering(intel->batch.last_bo); } void intelInitDriverFunctions(struct dd_function_table *functions) { _mesa_init_driver_functions(functions); functions->Flush = intel_glFlush; functions->Finish = intelFinish; functions->GetString = intelGetString; functions->UpdateState = intelInvalidateState; intelInitTextureFuncs(functions); intelInitTextureImageFuncs(functions); intelInitTextureSubImageFuncs(functions); intelInitTextureCopyImageFuncs(functions); intelInitClearFuncs(functions); intelInitBufferFuncs(functions); intelInitPixelFuncs(functions); intelInitBufferObjectFuncs(functions); intel_init_syncobj_functions(functions); } bool intelInitContext(struct intel_context *intel, int api, unsigned major_version, unsigned minor_version, uint32_t flags, const struct gl_config * mesaVis, __DRIcontext * driContextPriv, void *sharedContextPrivate, struct dd_function_table *functions, unsigned *dri_ctx_error) { struct gl_context *ctx = &intel->ctx; struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate; __DRIscreen *sPriv = driContextPriv->driScreenPriv; struct intel_screen *intelScreen = sPriv->driverPrivate; int bo_reuse_mode; /* Can't rely on invalidate events, fall back to glViewport hack */ if (!driContextPriv->driScreenPriv->dri2.useInvalidate) functions->Viewport = intel_noninvalidate_viewport; else functions->Viewport = intel_viewport; intel->intelScreen = intelScreen; if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx, functions)) { *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY; printf("%s: failed to init mesa context\n", __func__); return false; } driContextSetFlags(&intel->ctx, flags); driContextPriv->driverPrivate = intel; intel->driContext = driContextPriv; intel->gen = intelScreen->gen; const int devID = intelScreen->deviceID; intel->is_945 = IS_945(devID); intel->has_swizzling = intel->intelScreen->hw_has_swizzling; memset(&ctx->TextureFormatSupported, 0, sizeof(ctx->TextureFormatSupported)); driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache, sPriv->myNum, "i915"); intel->maxBatchSize = 4096; /* Estimate the size of the mappable aperture into the GTT. There's an * ioctl to get the whole GTT size, but not one to get the mappable subset. * It turns out it's basically always 256MB, though some ancient hardware * was smaller. */ uint32_t gtt_size = 256 * 1024 * 1024; if (intel->gen == 2) gtt_size = 128 * 1024 * 1024; /* We don't want to map two objects such that a memcpy between them would * just fault one mapping in and then the other over and over forever. So * we would need to divide the GTT size by 2. Additionally, some GTT is * taken up by things like the framebuffer and the ringbuffer and such, so * be more conservative. */ intel->max_gtt_map_object_size = gtt_size / 4; intel->bufmgr = intelScreen->bufmgr; bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse"); switch (bo_reuse_mode) { case DRI_CONF_BO_REUSE_DISABLED: break; case DRI_CONF_BO_REUSE_ALL: intel_bufmgr_gem_enable_reuse(intel->bufmgr); break; } ctx->Const.MinLineWidth = 1.0; ctx->Const.MinLineWidthAA = 1.0; ctx->Const.MaxLineWidth = 7.0; ctx->Const.MaxLineWidthAA = 7.0; ctx->Const.LineWidthGranularity = 0.5; ctx->Const.MinPointSize = 1.0; ctx->Const.MinPointSizeAA = 1.0; ctx->Const.MaxPointSize = 255.0; ctx->Const.MaxPointSizeAA = 3.0; ctx->Const.PointSizeGranularity = 1.0; ctx->Const.StripTextureBorder = GL_TRUE; /* reinitialize the context point state. * It depend on constants in __struct gl_contextRec::Const */ _mesa_init_point(ctx); ctx->Const.MaxRenderbufferSize = 2048; _swrast_CreateContext(ctx); _vbo_CreateContext(ctx); if (ctx->swrast_context) { _tnl_CreateContext(ctx); _swsetup_CreateContext(ctx); /* Configure swrast to match hardware characteristics: */ _swrast_allow_pixel_fog(ctx, false); _swrast_allow_vertex_fog(ctx, true); } _mesa_meta_init(ctx); intel->hw_stipple = 1; intel->RenderIndex = ~0; intelInitExtensions(ctx); INTEL_DEBUG = parse_debug_string(getenv("INTEL_DEBUG"), debug_control); if (INTEL_DEBUG & DEBUG_BUFMGR) dri_bufmgr_set_debug(intel->bufmgr, true); if (INTEL_DEBUG & DEBUG_PERF) intel->perf_debug = true; if (INTEL_DEBUG & DEBUG_AUB) drm_intel_bufmgr_gem_set_aub_dump(intel->bufmgr, true); intel_batchbuffer_init(intel); intel_fbo_init(intel); intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z"); intel->prim.primitive = ~0; /* Force all software fallbacks */ if (driQueryOptionb(&intel->optionCache, "no_rast")) { fprintf(stderr, "disabling 3D rasterization\n"); intel->no_rast = 1; } if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) { fprintf(stderr, "flushing batchbuffer before/after each draw call\n"); intel->always_flush_batch = 1; } if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) { fprintf(stderr, "flushing GPU caches before/after each draw call\n"); intel->always_flush_cache = 1; } if (driQueryOptionb(&intel->optionCache, "disable_throttling")) { fprintf(stderr, "disabling flush throttling\n"); intel->disable_throttling = 1; } return true; } void intelDestroyContext(__DRIcontext * driContextPriv) { struct intel_context *intel = (struct intel_context *) driContextPriv->driverPrivate; struct gl_context *ctx = &intel->ctx; assert(intel); /* should never be null */ if (intel) { INTEL_FIREVERTICES(intel); /* Dump a final BMP in case the application doesn't call SwapBuffers */ if (INTEL_DEBUG & DEBUG_AUB) { intel_batchbuffer_flush(intel); aub_dump_bmp(&intel->ctx); } _mesa_meta_free(&intel->ctx); intel->vtbl.destroy(intel); if (ctx->swrast_context) { _swsetup_DestroyContext(&intel->ctx); _tnl_DestroyContext(&intel->ctx); } _vbo_DestroyContext(&intel->ctx); if (ctx->swrast_context) _swrast_DestroyContext(&intel->ctx); intel->Fallback = 0x0; /* don't call _swrast_Flush later */ intel_batchbuffer_free(intel); free(intel->prim.vb); intel->prim.vb = NULL; drm_intel_bo_unreference(intel->prim.vb_bo); intel->prim.vb_bo = NULL; drm_intel_bo_unreference(intel->first_post_swapbuffers_batch); intel->first_post_swapbuffers_batch = NULL; driDestroyOptionCache(&intel->optionCache); /* free the Mesa context */ _mesa_free_context_data(&intel->ctx); _math_matrix_dtr(&intel->ViewportMatrix); ralloc_free(intel); driContextPriv->driverPrivate = NULL; } } GLboolean intelUnbindContext(__DRIcontext * driContextPriv) { /* Unset current context and dispath table */ _mesa_make_current(NULL, NULL, NULL); return true; } GLboolean intelMakeCurrent(__DRIcontext * driContextPriv, __DRIdrawable * driDrawPriv, __DRIdrawable * driReadPriv) { struct intel_context *intel; GET_CURRENT_CONTEXT(curCtx); if (driContextPriv) intel = (struct intel_context *) driContextPriv->driverPrivate; else intel = NULL; /* According to the glXMakeCurrent() man page: "Pending commands to * the previous context, if any, are flushed before it is released." * But only flush if we're actually changing contexts. */ if (intel_context(curCtx) && intel_context(curCtx) != intel) { _mesa_flush(curCtx); } if (driContextPriv) { struct gl_context *ctx = &intel->ctx; struct gl_framebuffer *fb, *readFb; if (driDrawPriv == NULL && driReadPriv == NULL) { fb = _mesa_get_incomplete_framebuffer(); readFb = _mesa_get_incomplete_framebuffer(); } else { fb = driDrawPriv->driverPrivate; readFb = driReadPriv->driverPrivate; driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1; driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1; } intel_prepare_render(intel); _mesa_make_current(ctx, fb, readFb); /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer * is NULL at that point. We can't call _mesa_makecurrent() * first, since we need the buffer size for the initial * viewport. So just call intel_draw_buffer() again here. */ intel_draw_buffer(ctx); } else { _mesa_make_current(NULL, NULL, NULL); } return true; } /** * \brief Query DRI2 to obtain a DRIdrawable's buffers. * * To determine which DRI buffers to request, examine the renderbuffers * attached to the drawable's framebuffer. Then request the buffers with * DRI2GetBuffers() or DRI2GetBuffersWithFormat(). * * This is called from intel_update_renderbuffers(). * * \param drawable Drawable whose buffers are queried. * \param buffers [out] List of buffers returned by DRI2 query. * \param buffer_count [out] Number of buffers returned. * * \see intel_update_renderbuffers() * \see DRI2GetBuffers() * \see DRI2GetBuffersWithFormat() */ static void intel_query_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer **buffers, int *buffer_count) { __DRIscreen *screen = intel->intelScreen->driScrnPriv; struct gl_framebuffer *fb = drawable->driverPrivate; int i = 0; unsigned attachments[8]; struct intel_renderbuffer *front_rb; struct intel_renderbuffer *back_rb; front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); memset(attachments, 0, sizeof(attachments)); if ((_mesa_is_front_buffer_drawing(fb) || _mesa_is_front_buffer_reading(fb) || !back_rb) && front_rb) { /* If a fake front buffer is in use, then querying for * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from * the real front buffer to the fake front buffer. So before doing the * query, we need to make sure all the pending drawing has landed in the * real front buffer. */ intel_flush(&intel->ctx); intel_flush_front(&intel->ctx); attachments[i++] = __DRI_BUFFER_FRONT_LEFT; attachments[i++] = intel_bits_per_pixel(front_rb); } else if (front_rb && intel->front_buffer_dirty) { /* We have pending front buffer rendering, but we aren't querying for a * front buffer. If the front buffer we have is a fake front buffer, * the X server is going to throw it away when it processes the query. * So before doing the query, make sure all the pending drawing has * landed in the real front buffer. */ intel_flush(&intel->ctx); intel_flush_front(&intel->ctx); } if (back_rb) { attachments[i++] = __DRI_BUFFER_BACK_LEFT; attachments[i++] = intel_bits_per_pixel(back_rb); } assert(i <= ARRAY_SIZE(attachments)); *buffers = screen->dri2.loader->getBuffersWithFormat(drawable, &drawable->w, &drawable->h, attachments, i / 2, buffer_count, drawable->loaderPrivate); } /** * \brief Assign a DRI buffer's DRM region to a renderbuffer. * * This is called from intel_update_renderbuffers(). * * \par Note: * DRI buffers whose attachment point is DRI2BufferStencil or * DRI2BufferDepthStencil are handled as special cases. * * \param buffer_name is a human readable name, such as "dri2 front buffer", * that is passed to intel_region_alloc_for_handle(). * * \see intel_update_renderbuffers() * \see intel_region_alloc_for_handle() */ static void intel_process_dri2_buffer(struct intel_context *intel, __DRIdrawable *drawable, __DRIbuffer *buffer, struct intel_renderbuffer *rb, const char *buffer_name) { struct intel_region *region = NULL; if (!rb) return; /* We try to avoid closing and reopening the same BO name, because the first * use of a mapping of the buffer involves a bunch of page faulting which is * moderately expensive. */ if (rb->mt && rb->mt->region && rb->mt->region->name == buffer->name) return; if (unlikely(INTEL_DEBUG & DEBUG_DRI)) { fprintf(stderr, "attaching buffer %d, at %d, cpp %d, pitch %d\n", buffer->name, buffer->attachment, buffer->cpp, buffer->pitch); } intel_miptree_release(&rb->mt); region = intel_region_alloc_for_handle(intel->intelScreen, buffer->cpp, drawable->w, drawable->h, buffer->pitch, buffer->name, buffer_name); if (!region) return; rb->mt = intel_miptree_create_for_dri2_buffer(intel, buffer->attachment, intel_rb_format(rb), region); intel_region_release(®ion); } /** * \brief Query DRI Image loader to obtain a DRIdrawable's buffers. * * To determine which DRI buffers to request, examine the renderbuffers * attached to the drawable's framebuffer. Then request the buffers with * dri3 * * This is called from intel_update_renderbuffers(). * * \param drawable Drawable whose buffers are queried. * \param buffers [out] List of buffers returned by DRI2 query. * \param buffer_count [out] Number of buffers returned. * * \see intel_update_renderbuffers() */ static void intel_update_image_buffer(struct intel_context *intel, __DRIdrawable *drawable, struct intel_renderbuffer *rb, __DRIimage *buffer, enum __DRIimageBufferMask buffer_type) { struct intel_region *region = buffer->region; if (!rb || !region) return; unsigned num_samples = rb->Base.Base.NumSamples; if (rb->mt && rb->mt->region && rb->mt->region == region) return; intel_miptree_release(&rb->mt); rb->mt = intel_miptree_create_for_image_buffer(intel, buffer_type, intel_rb_format(rb), num_samples, region); } static void intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable) { struct gl_framebuffer *fb = drawable->driverPrivate; __DRIscreen *screen = intel->intelScreen->driScrnPriv; struct intel_renderbuffer *front_rb; struct intel_renderbuffer *back_rb; struct __DRIimageList images; unsigned int format; uint32_t buffer_mask = 0; front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT); back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT); if (back_rb) format = intel_rb_format(back_rb); else if (front_rb) format = intel_rb_format(front_rb); else return; if (front_rb && (_mesa_is_front_buffer_drawing(fb) || _mesa_is_front_buffer_reading(fb) || !back_rb)) { buffer_mask |= __DRI_IMAGE_BUFFER_FRONT; } if (back_rb) buffer_mask |= __DRI_IMAGE_BUFFER_BACK; (*screen->image.loader->getBuffers) (drawable, driGLFormatToImageFormat(format), &drawable->dri2.stamp, drawable->loaderPrivate, buffer_mask, &images); if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) { drawable->w = images.front->width; drawable->h = images.front->height; intel_update_image_buffer(intel, drawable, front_rb, images.front, __DRI_IMAGE_BUFFER_FRONT); } if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) { drawable->w = images.back->width; drawable->h = images.back->height; intel_update_image_buffer(intel, drawable, back_rb, images.back, __DRI_IMAGE_BUFFER_BACK); } }