| /************************************************************************** |
| * |
| * 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 = ctx->NewState; |
| struct intel_context *intel = intel_context(ctx); |
| |
| if (ctx->swrast_context) |
| _swrast_InvalidateState(ctx, new_state); |
| |
| intel->NewGLState |= new_state; |
| |
| if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT)) |
| _mesa_update_draw_buffer_bounds(ctx, ctx->DrawBuffer); |
| |
| 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; |
| |
| if (driContextPriv) |
| intel = (struct intel_context *) driContextPriv->driverPrivate; |
| else |
| intel = NULL; |
| |
| 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; |
| int ret; |
| |
| 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; |
| |
| ret = screen->image.loader->getBuffers(drawable, |
| driGLFormatToImageFormat(format), |
| &drawable->dri2.stamp, |
| drawable->loaderPrivate, |
| buffer_mask, |
| &images); |
| if (!ret) |
| return; |
| |
| 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); |
| } |
| } |
