| // Copyright 2014 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/renderer/rasterizer/skia/hardware_rasterizer.h" |
| |
| #include <algorithm> |
| |
| #include "base/containers/linked_hash_map.h" |
| #include "base/debug/trace_event.h" |
| #include "cobalt/renderer/backend/egl/graphics_context.h" |
| #include "cobalt/renderer/backend/egl/graphics_system.h" |
| #include "cobalt/renderer/backend/egl/texture.h" |
| #include "cobalt/renderer/backend/egl/utils.h" |
| #include "cobalt/renderer/rasterizer/common/surface_cache.h" |
| #include "cobalt/renderer/rasterizer/egl/textured_mesh_renderer.h" |
| #include "cobalt/renderer/rasterizer/skia/cobalt_skia_type_conversions.h" |
| #include "cobalt/renderer/rasterizer/skia/hardware_mesh.h" |
| #include "cobalt/renderer/rasterizer/skia/hardware_resource_provider.h" |
| #include "cobalt/renderer/rasterizer/skia/render_tree_node_visitor.h" |
| #include "cobalt/renderer/rasterizer/skia/scratch_surface_cache.h" |
| #include "cobalt/renderer/rasterizer/skia/surface_cache_delegate.h" |
| #include "cobalt/renderer/rasterizer/skia/vertex_buffer_object.h" |
| #include "third_party/glm/glm/gtc/matrix_inverse.hpp" |
| #include "third_party/glm/glm/gtx/transform.hpp" |
| #include "third_party/glm/glm/mat3x3.hpp" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkSurface.h" |
| #include "third_party/skia/include/gpu/GrContext.h" |
| #include "third_party/skia/include/gpu/GrTexture.h" |
| #include "third_party/skia/include/gpu/SkGrPixelRef.h" |
| #include "third_party/skia/src/gpu/SkGpuDevice.h" |
| |
| namespace { |
| // Some clients call Submit() multiple times with up to 2 different render |
| // targets each frame, so the max must be at least 2 to avoid constantly |
| // generating new surfaces. |
| static const size_t kMaxSkSurfaceCount = 2; |
| } |
| |
| namespace cobalt { |
| namespace renderer { |
| namespace rasterizer { |
| namespace skia { |
| |
| class HardwareRasterizer::Impl { |
| public: |
| Impl(backend::GraphicsContext* graphics_context, int skia_atlas_width, |
| int skia_atlas_height, int skia_cache_size_in_bytes, |
| int scratch_surface_cache_size_in_bytes, int surface_cache_size_in_bytes, |
| bool purge_skia_font_caches_on_destruction); |
| ~Impl(); |
| |
| void AdvanceFrame(); |
| |
| void Submit(const scoped_refptr<render_tree::Node>& render_tree, |
| const scoped_refptr<backend::RenderTarget>& render_target, |
| const Options& options); |
| |
| void SubmitOffscreen(const scoped_refptr<render_tree::Node>& render_tree, |
| SkCanvas* canvas); |
| |
| void SubmitOffscreenToRenderTarget( |
| const scoped_refptr<render_tree::Node>& render_tree, |
| const scoped_refptr<backend::RenderTarget>& render_target); |
| |
| SkCanvas* GetCanvasFromRenderTarget( |
| const scoped_refptr<backend::RenderTarget>& render_target); |
| |
| render_tree::ResourceProvider* GetResourceProvider(); |
| GrContext* GetGrContext(); |
| |
| void MakeCurrent(); |
| |
| private: |
| // Note: We cannot store a SkAutoTUnref<SkSurface> in the map because it is |
| // not copyable; so we must manually manage our references when adding / |
| // removing SkSurfaces from it. |
| typedef base::linked_hash_map<int32_t, SkSurface*> SkSurfaceMap; |
| class CachedScratchSurfaceHolder |
| : public RenderTreeNodeVisitor::ScratchSurface { |
| public: |
| CachedScratchSurfaceHolder(ScratchSurfaceCache* cache, |
| const math::Size& size) |
| : cached_scratch_surface_(cache, size) {} |
| SkSurface* GetSurface() OVERRIDE { |
| return cached_scratch_surface_.GetSurface(); |
| } |
| |
| private: |
| CachedScratchSurface cached_scratch_surface_; |
| }; |
| |
| SkSurface* CreateSkSurface(const math::Size& size); |
| scoped_ptr<RenderTreeNodeVisitor::ScratchSurface> CreateScratchSurface( |
| const math::Size& size); |
| |
| void RasterizeRenderTreeToCanvas( |
| const scoped_refptr<render_tree::Node>& render_tree, SkCanvas* canvas, |
| GrSurfaceOrigin origin); |
| |
| void ResetSkiaState(); |
| |
| void RenderTextureEGL(const render_tree::ImageNode* image_node, |
| RenderTreeNodeVisitorDrawState* draw_state); |
| void RenderTextureWithMeshFilterEGL( |
| const render_tree::ImageNode* image_node, |
| const render_tree::MapToMeshFilter& mesh_filter, |
| RenderTreeNodeVisitorDrawState* draw_state); |
| |
| base::ThreadChecker thread_checker_; |
| |
| backend::GraphicsContextEGL* graphics_context_; |
| scoped_ptr<render_tree::ResourceProvider> resource_provider_; |
| |
| SkAutoTUnref<GrContext> gr_context_; |
| |
| SkSurfaceMap sk_output_surface_map_; |
| |
| base::optional<ScratchSurfaceCache> scratch_surface_cache_; |
| |
| base::optional<SurfaceCacheDelegate> surface_cache_delegate_; |
| base::optional<common::SurfaceCache> surface_cache_; |
| |
| base::optional<egl::TexturedMeshRenderer> textured_mesh_renderer_; |
| |
| // Valid only for the duration of a call to RasterizeRenderTreeToCanvas(). |
| // Useful for directing textured_mesh_renderer_ on whether to flip its y-axis |
| // or not since Skia does not let us pull that information out of the |
| // SkCanvas object (which Skia would internally use to get this information). |
| base::optional<GrSurfaceOrigin> current_surface_origin_; |
| }; |
| |
| namespace { |
| |
| SkSurfaceProps GetRenderTargetSurfaceProps() { |
| return SkSurfaceProps(SkSurfaceProps::kUseDistanceFieldFonts_Flag, |
| SkSurfaceProps::kLegacyFontHost_InitType); |
| } |
| |
| SkSurface* CreateSkiaRenderTargetSurface(GrRenderTarget* render_target) { |
| SkSurfaceProps surface_props = GetRenderTargetSurfaceProps(); |
| return SkSurface::NewRenderTargetDirect(render_target, &surface_props); |
| } |
| |
| // Takes meta-data from a Cobalt RenderTarget object and uses it to fill out |
| // a Skia backend render target descriptor. Additionally, it also references |
| // the actual render target object as well so that Skia can then recover |
| // the Cobalt render target object. |
| GrBackendRenderTargetDesc CobaltRenderTargetToSkiaBackendRenderTargetDesc( |
| cobalt::renderer::backend::RenderTarget* cobalt_render_target) { |
| const math::Size& size = cobalt_render_target->GetSize(); |
| |
| GrBackendRenderTargetDesc skia_desc; |
| skia_desc.fWidth = size.width(); |
| skia_desc.fHeight = size.height(); |
| skia_desc.fConfig = kRGBA_8888_GrPixelConfig; |
| skia_desc.fOrigin = kBottomLeft_GrSurfaceOrigin; |
| skia_desc.fSampleCnt = 0; |
| skia_desc.fStencilBits = 0; |
| skia_desc.fRenderTargetHandle = |
| static_cast<GrBackendObject>(cobalt_render_target->GetPlatformHandle()); |
| |
| return skia_desc; |
| } |
| |
| glm::mat4 ModelViewMatrixSurfaceOriginAdjustment( |
| GrSurfaceOrigin origin) { |
| if (origin == kTopLeft_GrSurfaceOrigin) { |
| return glm::scale(glm::vec3(1.0f, -1.0f, 1.0f)); |
| } else { |
| return glm::mat4(1.0f); |
| } |
| } |
| |
| glm::mat4 GetFallbackTextureModelViewProjectionMatrix( |
| GrSurfaceOrigin origin, |
| const SkISize& canvas_size, const SkMatrix& total_matrix, |
| const math::RectF& destination_rect) { |
| // We define a transformation from GLES normalized device coordinates (e.g. |
| // [-1.0, 1.0]) into Skia coordinates (e.g. [0, canvas_size.width()]). This |
| // lets us apply Skia's transform inside of Skia's coordinate space. |
| glm::mat4 gl_norm_coords_to_skia_canvas_coords( |
| canvas_size.width() * 0.5f, 0, 0, 0, 0, -canvas_size.height() * 0.5f, 0, |
| 0, 0, 0, 1, 0, canvas_size.width() * 0.5f, canvas_size.height() * 0.5f, 0, |
| 1); |
| |
| // Convert Skia's current transform from the 3x3 row-major Skia matrix to a |
| // 4x4 column-major GLSL matrix. This is in Skia's coordinate system. |
| glm::mat4 skia_transform_matrix( |
| total_matrix[0], total_matrix[3], 0, total_matrix[6], total_matrix[1], |
| total_matrix[4], 0, total_matrix[7], 0, 0, 1, 0, total_matrix[2], |
| total_matrix[5], 0, total_matrix[8]); |
| |
| // Finally construct a matrix to map from full screen coordinates into the |
| // destination rectangle. This is in Skia's coordinate system. |
| glm::mat4 dest_rect_matrix( |
| destination_rect.width() / canvas_size.width(), 0, 0, 0, 0, |
| destination_rect.height() / canvas_size.height(), 0, 0, 0, 0, 1, 0, |
| destination_rect.x(), destination_rect.y(), 0, 1); |
| |
| // Since these matrices are applied in LIFO order, read the followin inlined |
| // comments in reverse order. |
| glm::mat4 result = |
| // Flip the y axis depending on the destination surface's origin. |
| ModelViewMatrixSurfaceOriginAdjustment(origin) * |
| // Finally transform back into normalized device coordinates so that |
| // GL can digest the results. |
| glm::affineInverse(gl_norm_coords_to_skia_canvas_coords) * |
| // Apply Skia's transformation matrix to the resulting coordinates. |
| skia_transform_matrix * |
| // Apply a matrix to transform from a quad that maps to the entire screen |
| // into a quad that maps to the destination rectangle. |
| dest_rect_matrix * |
| // First transform from normalized device coordinates which the VBO |
| // referenced by the RenderQuad() function will have its positions defined |
| // within (e.g. [-1, 1]). |
| gl_norm_coords_to_skia_canvas_coords; |
| |
| return result; |
| } |
| |
| // Accommodate for the fact that for some image formats, like UYVY, our texture |
| // pixel width is actually half the size specified because there are two Y |
| // values in each pixel. |
| math::Rect AdjustContentRegionForImageType( |
| const base::optional<AlternateRgbaFormat>& alternate_rgba_format, |
| const math::Rect& content_region) { |
| if (!alternate_rgba_format) { |
| return content_region; |
| } |
| |
| switch (*alternate_rgba_format) { |
| case AlternateRgbaFormat_UYVY: { |
| math::Rect adjusted_content_region = content_region; |
| adjusted_content_region.set_width(content_region.width() / 2); |
| return adjusted_content_region; |
| } break; |
| default: { |
| NOTREACHED(); |
| return content_region; |
| } |
| } |
| } |
| |
| // For stereoscopic video, the actual video is split (either horizontally or |
| // vertically) in two, one video for the left eye and one for the right eye. |
| // This function will adjust the content region rectangle to match only the |
| // left eye's video region, since we are ultimately presenting to a monoscopic |
| // display. |
| math::Rect AdjustContentRegionForStereoMode(render_tree::StereoMode stereo_mode, |
| const math::Rect& content_region) { |
| switch (stereo_mode) { |
| case render_tree::kLeftRight: { |
| // Use the left half (left eye) of the video only. |
| math::Rect adjusted_content_region(content_region); |
| adjusted_content_region.set_width(content_region.width() / 2); |
| return adjusted_content_region; |
| } |
| |
| case render_tree::kTopBottom: { |
| // Use the top half (left eye) of the video only. |
| math::Rect adjusted_content_region(content_region); |
| adjusted_content_region.set_height(content_region.height() / 2); |
| return adjusted_content_region; |
| } |
| |
| case render_tree::kMono: |
| case render_tree::kLeftRightUnadjustedTextureCoords: |
| // No modifications needed here, pass content region through unchanged. |
| return content_region; |
| } |
| |
| NOTREACHED(); |
| return content_region; |
| } |
| |
| egl::TexturedMeshRenderer::Image::Texture GetTextureFromHardwareFrontendImage( |
| HardwareFrontendImage* image, render_tree::StereoMode stereo_mode) { |
| egl::TexturedMeshRenderer::Image::Texture result; |
| |
| if (image->GetContentRegion()) { |
| result.content_region = *image->GetContentRegion(); |
| } else { |
| // If no content region is explicitly provided, we take this to mean that |
| // the image was created from render_tree::ImageData in which case image |
| // data is defined to be specified top-to-bottom, and so we must flip the |
| // y-axis before passing it on to a GL renderer. |
| math::Size image_size(image->GetSize()); |
| result.content_region = math::Rect( |
| 0, image_size.height(), image_size.width(), -image_size.height()); |
| } |
| |
| result.content_region = AdjustContentRegionForStereoMode( |
| stereo_mode, AdjustContentRegionForImageType( |
| image->alternate_rgba_format(), result.content_region)); |
| |
| result.texture = image->GetTextureEGL(); |
| |
| return result; |
| } |
| |
| egl::TexturedMeshRenderer::Image SkiaImageToTexturedMeshRendererImage( |
| Image* image, render_tree::StereoMode stereo_mode) { |
| egl::TexturedMeshRenderer::Image result; |
| |
| if (image->GetTypeId() == base::GetTypeId<SinglePlaneImage>()) { |
| HardwareFrontendImage* hardware_image = |
| base::polymorphic_downcast<HardwareFrontendImage*>(image); |
| |
| if (!hardware_image->alternate_rgba_format()) { |
| result.type = egl::TexturedMeshRenderer::Image::RGBA; |
| } else { |
| switch (*hardware_image->alternate_rgba_format()) { |
| case AlternateRgbaFormat_UYVY: { |
| result.type = egl::TexturedMeshRenderer::Image::YUV_UYVY_422_BT709; |
| } break; |
| default: { NOTREACHED(); } |
| } |
| } |
| |
| result.textures[0] = |
| GetTextureFromHardwareFrontendImage(hardware_image, stereo_mode); |
| } else if (image->GetTypeId() == base::GetTypeId<MultiPlaneImage>()) { |
| HardwareMultiPlaneImage* hardware_image = |
| base::polymorphic_downcast<HardwareMultiPlaneImage*>(image); |
| if (hardware_image->GetFormat() == |
| render_tree::kMultiPlaneImageFormatYUV2PlaneBT709) { |
| result.type = egl::TexturedMeshRenderer::Image::YUV_2PLANE_BT709; |
| result.textures[0] = GetTextureFromHardwareFrontendImage( |
| hardware_image->GetHardwareFrontendImage(0), stereo_mode); |
| result.textures[1] = GetTextureFromHardwareFrontendImage( |
| hardware_image->GetHardwareFrontendImage(1), stereo_mode); |
| } else if (hardware_image->GetFormat() == |
| render_tree::kMultiPlaneImageFormatYUV3PlaneBT709) { |
| result.type = egl::TexturedMeshRenderer::Image::YUV_3PLANE_BT709; |
| result.textures[0] = GetTextureFromHardwareFrontendImage( |
| hardware_image->GetHardwareFrontendImage(0), stereo_mode); |
| result.textures[1] = GetTextureFromHardwareFrontendImage( |
| hardware_image->GetHardwareFrontendImage(1), stereo_mode); |
| result.textures[2] = GetTextureFromHardwareFrontendImage( |
| hardware_image->GetHardwareFrontendImage(2), stereo_mode); |
| } |
| } else { |
| NOTREACHED(); |
| } |
| |
| return result; |
| } |
| |
| enum FaceOrientation { |
| FaceOrientation_Ccw, |
| FaceOrientation_Cw, |
| }; |
| |
| void SetupGLStateForImageRender(Image* image, |
| FaceOrientation face_orientation) { |
| if (image->IsOpaque()) { |
| GL_CALL(glDisable(GL_BLEND)); |
| } else { |
| GL_CALL(glEnable(GL_BLEND)); |
| } |
| GL_CALL(glDisable(GL_DEPTH_TEST)); |
| GL_CALL(glDisable(GL_STENCIL_TEST)); |
| GL_CALL(glEnable(GL_SCISSOR_TEST)); |
| GL_CALL(glCullFace(GL_BACK)); |
| GL_CALL(glFrontFace(GL_CCW)); |
| if (face_orientation == FaceOrientation_Ccw) { |
| GL_CALL(glEnable(GL_CULL_FACE)); |
| } else { |
| // Unfortunately, some GLES implementations (like software Mesa) have a |
| // problem with flipping glCullFrace() from GL_BACK to GL_FRONT, they seem |
| // to ignore it. We need to render back faces though if the face |
| // orientation is flipped, so the only compatible solution is to disable |
| // back-face culling. |
| GL_CALL(glDisable(GL_CULL_FACE)); |
| } |
| } |
| |
| void SetupGLTextureParameters(const egl::TexturedMeshRenderer::Image& image, |
| uint32 texture_wrap_s, uint32 texture_wrap_t) { |
| for (int i = 0; i < image.num_textures(); ++i) { |
| const backend::TextureEGL* texture = image.textures[i].texture; |
| GL_CALL(glBindTexture(texture->GetTarget(), texture->gl_handle())); |
| GL_CALL(glTexParameteri(texture->GetTarget(), GL_TEXTURE_MAG_FILTER, |
| GL_LINEAR)); |
| GL_CALL(glTexParameteri(texture->GetTarget(), GL_TEXTURE_MIN_FILTER, |
| GL_LINEAR)); |
| GL_CALL(glTexParameteri(texture->GetTarget(), GL_TEXTURE_WRAP_S, |
| texture_wrap_s)); |
| GL_CALL(glTexParameteri(texture->GetTarget(), GL_TEXTURE_WRAP_T, |
| texture_wrap_t)); |
| GL_CALL(glBindTexture(texture->GetTarget(), 0)); |
| } |
| } |
| |
| FaceOrientation GetFaceOrientationFromModelViewProjectionMatrix( |
| const glm::mat4& model_view_projection_matrix) { |
| return glm::determinant(model_view_projection_matrix) >= 0 ? |
| FaceOrientation_Ccw : |
| FaceOrientation_Cw; |
| } |
| |
| } // namespace |
| |
| void HardwareRasterizer::Impl::RenderTextureEGL( |
| const render_tree::ImageNode* image_node, |
| RenderTreeNodeVisitorDrawState* draw_state) { |
| Image* image = |
| base::polymorphic_downcast<Image*>(image_node->data().source.get()); |
| if (!image) { |
| return; |
| } |
| image->EnsureInitialized(); |
| |
| // Flush the Skia draw state to ensure that all previously issued Skia calls |
| // are rendered so that the following draw command will appear in the correct |
| // order. |
| draw_state->render_target->flush(); |
| |
| SkISize canvas_size = draw_state->render_target->getBaseLayerSize(); |
| GL_CALL(glViewport(0, 0, canvas_size.width(), canvas_size.height())); |
| |
| SkIRect canvas_boundsi; |
| draw_state->render_target->getClipDeviceBounds(&canvas_boundsi); |
| // We need to translate from Skia's top-left corner origin to GL's bottom-left |
| // corner origin. |
| GL_CALL(glScissor( |
| canvas_boundsi.x(), |
| *current_surface_origin_ == kBottomLeft_GrSurfaceOrigin ? |
| canvas_size.height() - canvas_boundsi.height() - canvas_boundsi.y() : |
| canvas_boundsi.y(), |
| canvas_boundsi.width(), canvas_boundsi.height())); |
| |
| glm::mat4 model_view_projection_matrix = |
| GetFallbackTextureModelViewProjectionMatrix( |
| *current_surface_origin_, |
| canvas_size, draw_state->render_target->getTotalMatrix(), |
| image_node->data().destination_rect); |
| |
| SetupGLStateForImageRender( |
| image, |
| GetFaceOrientationFromModelViewProjectionMatrix( |
| model_view_projection_matrix)); |
| |
| if (!textured_mesh_renderer_) { |
| textured_mesh_renderer_.emplace(graphics_context_); |
| } |
| |
| // Convert our image into a format digestable by TexturedMeshRenderer. |
| egl::TexturedMeshRenderer::Image textured_mesh_renderer_image = |
| SkiaImageToTexturedMeshRendererImage(image, render_tree::kMono); |
| |
| SetupGLTextureParameters(textured_mesh_renderer_image, |
| GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE); |
| |
| // Invoke our TexturedMeshRenderer to actually perform the draw call. |
| textured_mesh_renderer_->RenderQuad( |
| textured_mesh_renderer_image, model_view_projection_matrix); |
| |
| // Let Skia know that we've modified GL state. |
| uint32_t untouched_states = |
| kMSAAEnable_GrGLBackendState | kStencil_GrGLBackendState | |
| kPixelStore_GrGLBackendState | kFixedFunction_GrGLBackendState | |
| kPathRendering_GrGLBackendState; |
| gr_context_->resetContext(~untouched_states & kAll_GrBackendState); |
| } |
| |
| void HardwareRasterizer::Impl::RenderTextureWithMeshFilterEGL( |
| const render_tree::ImageNode* image_node, |
| const render_tree::MapToMeshFilter& mesh_filter, |
| RenderTreeNodeVisitorDrawState* draw_state) { |
| Image* image = |
| base::polymorphic_downcast<Image*>(image_node->data().source.get()); |
| if (!image) { |
| return; |
| } |
| image->EnsureInitialized(); |
| |
| SkISize canvas_size = draw_state->render_target->getBaseLayerSize(); |
| |
| // Flush the Skia draw state to ensure that all previously issued Skia calls |
| // are rendered so that the following draw command will appear in the correct |
| // order. |
| draw_state->render_target->flush(); |
| |
| // We setup our viewport to fill the entire canvas. |
| GL_CALL(glViewport(0, 0, canvas_size.width(), canvas_size.height())); |
| GL_CALL(glScissor(0, 0, canvas_size.width(), canvas_size.height())); |
| |
| glm::mat4 model_view_projection_matrix = |
| ModelViewMatrixSurfaceOriginAdjustment(*current_surface_origin_) * |
| draw_state->transform_3d; |
| |
| SetupGLStateForImageRender( |
| image, |
| GetFaceOrientationFromModelViewProjectionMatrix( |
| model_view_projection_matrix)); |
| |
| if (!textured_mesh_renderer_) { |
| textured_mesh_renderer_.emplace(graphics_context_); |
| } |
| |
| const VertexBufferObject* mono_vbo = |
| base::polymorphic_downcast<HardwareMesh*>( |
| mesh_filter.mono_mesh(image->GetSize()).get()) |
| ->GetVBO(); |
| |
| // Convert our image into a format digestable by TexturedMeshRenderer. |
| egl::TexturedMeshRenderer::Image textured_mesh_renderer_image = |
| SkiaImageToTexturedMeshRendererImage(image, mesh_filter.stereo_mode()); |
| |
| SetupGLTextureParameters(textured_mesh_renderer_image, |
| GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE); |
| |
| // Invoke out TexturedMeshRenderer to actually perform the draw call. |
| textured_mesh_renderer_->RenderVBO( |
| mono_vbo->GetHandle(), mono_vbo->GetVertexCount(), |
| mono_vbo->GetDrawMode(), |
| textured_mesh_renderer_image, |
| model_view_projection_matrix); |
| |
| // Let Skia know that we've modified GL state. |
| gr_context_->resetContext(); |
| } |
| |
| HardwareRasterizer::Impl::Impl(backend::GraphicsContext* graphics_context, |
| int skia_atlas_width, int skia_atlas_height, |
| int skia_cache_size_in_bytes, |
| int scratch_surface_cache_size_in_bytes, |
| int surface_cache_size_in_bytes, |
| bool purge_skia_font_caches_on_destruction) |
| : graphics_context_( |
| base::polymorphic_downcast<backend::GraphicsContextEGL*>( |
| graphics_context)) { |
| TRACE_EVENT0("cobalt::renderer", "HardwareRasterizer::Impl::Impl()"); |
| |
| DLOG(INFO) << "skia_cache_size_in_bytes: " << skia_cache_size_in_bytes; |
| DLOG(INFO) << "scratch_surface_cache_size_in_bytes: " |
| << scratch_surface_cache_size_in_bytes; |
| DLOG(INFO) << "surface_cache_size_in_bytes: " << surface_cache_size_in_bytes; |
| |
| graphics_context_->MakeCurrent(); |
| // Create a GrContext object that wraps the passed in Cobalt GraphicsContext |
| // object. |
| gr_context_.reset(GrContext::Create( |
| kCobalt_GrBackend, reinterpret_cast<GrBackendContext>(graphics_context_), |
| skia_atlas_width, skia_atlas_height)); |
| |
| DCHECK(gr_context_); |
| // The GrContext manages a resource cache internally using GrResourceCache |
| // which by default caches 96MB of resources. This is used for helping with |
| // rendering shadow effects, gradient effects, and software rendered paths. |
| // As we have our own cache for most resources, set it to a much smaller value |
| // so Skia doesn't use too much GPU memory. |
| const int kSkiaCacheMaxResources = 128; |
| gr_context_->setResourceCacheLimits(kSkiaCacheMaxResources, |
| skia_cache_size_in_bytes); |
| |
| base::Callback<SkSurface*(const math::Size&)> create_sk_surface_function = |
| base::Bind(&HardwareRasterizer::Impl::CreateSkSurface, |
| base::Unretained(this)); |
| |
| scratch_surface_cache_.emplace(create_sk_surface_function, |
| scratch_surface_cache_size_in_bytes); |
| |
| // Setup a resource provider for resources to be used with a hardware |
| // accelerated Skia rasterizer. |
| resource_provider_.reset(new HardwareResourceProvider( |
| graphics_context_, gr_context_, |
| base::Bind(&HardwareRasterizer::Impl::SubmitOffscreenToRenderTarget, |
| base::Unretained(this)), |
| purge_skia_font_caches_on_destruction)); |
| |
| graphics_context_->ReleaseCurrentContext(); |
| |
| int max_surface_size = std::max(gr_context_->getMaxRenderTargetSize(), |
| gr_context_->getMaxTextureSize()); |
| DLOG(INFO) << "Max renderer surface size: " << max_surface_size; |
| |
| if (surface_cache_size_in_bytes > 0) { |
| surface_cache_delegate_.emplace( |
| create_sk_surface_function, |
| math::Size(max_surface_size, max_surface_size)); |
| |
| surface_cache_.emplace(&surface_cache_delegate_.value(), |
| surface_cache_size_in_bytes); |
| } |
| } |
| |
| HardwareRasterizer::Impl::~Impl() { |
| graphics_context_->MakeCurrent(); |
| textured_mesh_renderer_ = base::nullopt; |
| |
| for (SkSurfaceMap::iterator iter = sk_output_surface_map_.begin(); |
| iter != sk_output_surface_map_.end(); iter++) { |
| iter->second->unref(); |
| } |
| surface_cache_ = base::nullopt; |
| surface_cache_delegate_ = base::nullopt; |
| scratch_surface_cache_ = base::nullopt; |
| gr_context_.reset(NULL); |
| graphics_context_->ReleaseCurrentContext(); |
| } |
| |
| void HardwareRasterizer::Impl::AdvanceFrame() { |
| // Update our surface cache to do per-frame calculations such as deciding |
| // which render tree nodes are candidates for caching in this upcoming |
| // frame. |
| if (surface_cache_) { |
| surface_cache_->Frame(); |
| } |
| } |
| |
| void HardwareRasterizer::Impl::Submit( |
| const scoped_refptr<render_tree::Node>& render_tree, |
| const scoped_refptr<backend::RenderTarget>& render_target, |
| const Options& options) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| scoped_refptr<backend::RenderTargetEGL> render_target_egl( |
| base::polymorphic_downcast<backend::RenderTargetEGL*>( |
| render_target.get())); |
| |
| // Skip rendering if we lost the surface. This can happen just before suspend |
| // on Android, so now we're just waiting for the suspend to clean up. |
| if (render_target_egl->is_surface_bad()) { |
| return; |
| } |
| |
| backend::GraphicsContextEGL::ScopedMakeCurrent scoped_make_current( |
| graphics_context_, render_target_egl); |
| |
| // First reset the graphics context state for the pending render tree |
| // draw calls, in case we have modified state in between. |
| gr_context_->resetContext(); |
| |
| AdvanceFrame(); |
| |
| // Get a SkCanvas that outputs to our hardware render target. |
| SkCanvas* canvas = GetCanvasFromRenderTarget(render_target); |
| |
| canvas->save(); |
| |
| if (options.flags & Rasterizer::kSubmitFlags_Clear) { |
| canvas->clear(SkColorSetARGB(0, 0, 0, 0)); |
| } else if (options.dirty) { |
| // Only a portion of the display is dirty. Reuse the previous frame |
| // if possible. |
| if (render_target_egl->ContentWasPreservedAfterSwap()) { |
| canvas->clipRect(CobaltRectFToSkiaRect(*options.dirty)); |
| } |
| } |
| |
| // Rasterize the passed in render tree to our hardware render target. |
| RasterizeRenderTreeToCanvas(render_tree, canvas, kBottomLeft_GrSurfaceOrigin); |
| |
| { |
| TRACE_EVENT0("cobalt::renderer", "Skia Flush"); |
| canvas->flush(); |
| } |
| |
| graphics_context_->SwapBuffers(render_target_egl); |
| canvas->restore(); |
| } |
| |
| void HardwareRasterizer::Impl::SubmitOffscreen( |
| const scoped_refptr<render_tree::Node>& render_tree, SkCanvas* canvas) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| RasterizeRenderTreeToCanvas(render_tree, canvas, kBottomLeft_GrSurfaceOrigin); |
| } |
| |
| void HardwareRasterizer::Impl::SubmitOffscreenToRenderTarget( |
| const scoped_refptr<render_tree::Node>& render_tree, |
| const scoped_refptr<backend::RenderTarget>& render_target) { |
| DCHECK(thread_checker_.CalledOnValidThread()); |
| |
| scoped_refptr<backend::RenderTargetEGL> render_target_egl( |
| base::polymorphic_downcast<backend::RenderTargetEGL*>( |
| render_target.get())); |
| |
| if (render_target_egl->is_surface_bad()) { |
| return; |
| } |
| |
| backend::GraphicsContextEGL::ScopedMakeCurrent scoped_make_current( |
| graphics_context_, render_target_egl); |
| |
| // Create a canvas from the render target. |
| GrBackendRenderTargetDesc skia_desc = |
| CobaltRenderTargetToSkiaBackendRenderTargetDesc(render_target.get()); |
| skia_desc.fOrigin = kTopLeft_GrSurfaceOrigin; |
| SkAutoTUnref<GrRenderTarget> skia_render_target( |
| gr_context_->wrapBackendRenderTarget(skia_desc)); |
| SkSurface* sk_output_surface = |
| CreateSkiaRenderTargetSurface(skia_render_target); |
| SkCanvas* canvas = sk_output_surface->getCanvas(); |
| |
| canvas->clear(SkColorSetARGB(0, 0, 0, 0)); |
| |
| // Render to the canvas and clean up. |
| RasterizeRenderTreeToCanvas(render_tree, canvas, kTopLeft_GrSurfaceOrigin); |
| canvas->flush(); |
| sk_output_surface->unref(); |
| } |
| |
| render_tree::ResourceProvider* HardwareRasterizer::Impl::GetResourceProvider() { |
| return resource_provider_.get(); |
| } |
| |
| GrContext* HardwareRasterizer::Impl::GetGrContext() { |
| return gr_context_.get(); |
| } |
| |
| void HardwareRasterizer::Impl::MakeCurrent() { |
| graphics_context_->MakeCurrent(); |
| } |
| |
| SkSurface* HardwareRasterizer::Impl::CreateSkSurface(const math::Size& size) { |
| TRACE_EVENT2("cobalt::renderer", "HardwareRasterizer::CreateSkSurface()", |
| "width", size.width(), "height", size.height()); |
| |
| // Create a texture of the specified size. Then convert it to a render |
| // target and then convert that to a SkSurface which we return. |
| GrTextureDesc target_surface_desc; |
| target_surface_desc.fFlags = |
| kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit; |
| target_surface_desc.fOrigin = kBottomLeft_GrSurfaceOrigin; |
| target_surface_desc.fWidth = size.width(); |
| target_surface_desc.fHeight = size.height(); |
| target_surface_desc.fConfig = kRGBA_8888_GrPixelConfig; |
| target_surface_desc.fSampleCnt = 0; |
| |
| SkAutoTUnref<GrTexture> skia_texture( |
| gr_context_->createUncachedTexture(target_surface_desc, NULL, 0)); |
| if (!skia_texture) { |
| // If we failed at creating a texture, try again using a different texture |
| // format. |
| target_surface_desc.fConfig = kBGRA_8888_GrPixelConfig; |
| skia_texture.reset( |
| gr_context_->createUncachedTexture(target_surface_desc, NULL, 0)); |
| } |
| if (!skia_texture) { |
| return NULL; |
| } |
| |
| GrRenderTarget* skia_render_target = skia_texture->asRenderTarget(); |
| DCHECK(skia_render_target); |
| |
| SkSurfaceProps surface_props = GetRenderTargetSurfaceProps(); |
| return SkSurface::NewRenderTargetDirect(skia_render_target, &surface_props); |
| } |
| |
| scoped_ptr<RenderTreeNodeVisitor::ScratchSurface> |
| HardwareRasterizer::Impl::CreateScratchSurface(const math::Size& size) { |
| TRACE_EVENT2("cobalt::renderer", "HardwareRasterizer::CreateScratchImage()", |
| "width", size.width(), "height", size.height()); |
| |
| scoped_ptr<CachedScratchSurfaceHolder> scratch_surface( |
| new CachedScratchSurfaceHolder(&scratch_surface_cache_.value(), size)); |
| if (scratch_surface->GetSurface()) { |
| return scratch_surface.PassAs<RenderTreeNodeVisitor::ScratchSurface>(); |
| } else { |
| return scoped_ptr<RenderTreeNodeVisitor::ScratchSurface>(); |
| } |
| } |
| |
| SkCanvas* HardwareRasterizer::Impl::GetCanvasFromRenderTarget( |
| const scoped_refptr<backend::RenderTarget>& render_target) { |
| SkSurface* sk_output_surface; |
| int32_t surface_map_key = render_target->GetSerialNumber(); |
| SkSurfaceMap::iterator iter = sk_output_surface_map_.find(surface_map_key); |
| if (iter == sk_output_surface_map_.end()) { |
| // Remove the least recently used SkSurface from the map if we exceed the |
| // max allowed saved surfaces. |
| if (sk_output_surface_map_.size() > kMaxSkSurfaceCount) { |
| SkSurfaceMap::iterator iter = sk_output_surface_map_.begin(); |
| DLOG(WARNING) |
| << "Erasing the SkSurface for RenderTarget " << iter->first |
| << ". This may happen nominally during movement-triggered " |
| << "replacement of SkSurfaces or else it may indicate the surface " |
| << "map is thrashing because the total number of RenderTargets (" |
| << kMaxSkSurfaceCount << ") has been exceeded."; |
| iter->second->unref(); |
| sk_output_surface_map_.erase(iter); |
| } |
| // Setup a Skia render target that wraps the passed in Cobalt render target. |
| SkAutoTUnref<GrRenderTarget> skia_render_target( |
| gr_context_->wrapBackendRenderTarget( |
| CobaltRenderTargetToSkiaBackendRenderTargetDesc( |
| render_target.get()))); |
| |
| // Create an SkSurface from the render target so that we can acquire a |
| // SkCanvas object from it in Submit(). |
| sk_output_surface = CreateSkiaRenderTargetSurface(skia_render_target); |
| sk_output_surface_map_[surface_map_key] = sk_output_surface; |
| } else { |
| sk_output_surface = sk_output_surface_map_[surface_map_key]; |
| // Mark this RenderTarget/SkCanvas pair as the most recently used by |
| // popping it and re-adding it. |
| sk_output_surface_map_.erase(iter); |
| sk_output_surface_map_[surface_map_key] = sk_output_surface; |
| } |
| return sk_output_surface->getCanvas(); |
| } |
| |
| void HardwareRasterizer::Impl::RasterizeRenderTreeToCanvas( |
| const scoped_refptr<render_tree::Node>& render_tree, SkCanvas* canvas, |
| GrSurfaceOrigin origin) { |
| TRACE_EVENT0("cobalt::renderer", "RasterizeRenderTreeToCanvas"); |
| // TODO: This trace uses the name in the current benchmark to keep it work as |
| // expected. Remove after switching to webdriver benchmark. |
| TRACE_EVENT0("cobalt::renderer", "VisitRenderTree"); |
| |
| base::optional<GrSurfaceOrigin> old_origin = current_surface_origin_; |
| current_surface_origin_.emplace(origin); |
| |
| RenderTreeNodeVisitor::CreateScratchSurfaceFunction |
| create_scratch_surface_function = |
| base::Bind(&HardwareRasterizer::Impl::CreateScratchSurface, |
| base::Unretained(this)); |
| RenderTreeNodeVisitor visitor( |
| canvas, &create_scratch_surface_function, |
| base::Bind(&HardwareRasterizer::Impl::ResetSkiaState, |
| base::Unretained(this)), |
| base::Bind(&HardwareRasterizer::Impl::RenderTextureEGL, |
| base::Unretained(this)), |
| base::Bind(&HardwareRasterizer::Impl::RenderTextureWithMeshFilterEGL, |
| base::Unretained(this)), |
| surface_cache_delegate_ ? &surface_cache_delegate_.value() : NULL, |
| surface_cache_ ? &surface_cache_.value() : NULL); |
| DCHECK(render_tree); |
| render_tree->Accept(&visitor); |
| |
| current_surface_origin_ = old_origin; |
| } |
| |
| void HardwareRasterizer::Impl::ResetSkiaState() { gr_context_->resetContext(); } |
| |
| HardwareRasterizer::HardwareRasterizer( |
| backend::GraphicsContext* graphics_context, int skia_atlas_width, |
| int skia_atlas_height, int skia_cache_size_in_bytes, |
| int scratch_surface_cache_size_in_bytes, int surface_cache_size_in_bytes, |
| bool purge_skia_font_caches_on_destruction) |
| : impl_(new Impl( |
| graphics_context, skia_atlas_width, skia_atlas_height, |
| skia_cache_size_in_bytes, scratch_surface_cache_size_in_bytes, |
| surface_cache_size_in_bytes, purge_skia_font_caches_on_destruction)) { |
| } |
| |
| HardwareRasterizer::~HardwareRasterizer() {} |
| |
| void HardwareRasterizer::Submit( |
| const scoped_refptr<render_tree::Node>& render_tree, |
| const scoped_refptr<backend::RenderTarget>& render_target, |
| const Options& options) { |
| TRACE_EVENT0("cobalt::renderer", "Rasterizer::Submit()"); |
| TRACE_EVENT0("cobalt::renderer", "HardwareRasterizer::Submit()"); |
| impl_->Submit(render_tree, render_target, options); |
| } |
| |
| void HardwareRasterizer::SubmitOffscreen( |
| const scoped_refptr<render_tree::Node>& render_tree, SkCanvas* canvas) { |
| TRACE_EVENT0("cobalt::renderer", "HardwareRasterizer::SubmitOffscreen()"); |
| impl_->SubmitOffscreen(render_tree, canvas); |
| } |
| |
| SkCanvas* HardwareRasterizer::GetCachedCanvas( |
| const scoped_refptr<backend::RenderTarget>& render_target) { |
| return impl_->GetCanvasFromRenderTarget(render_target); |
| } |
| |
| void HardwareRasterizer::AdvanceFrame() { |
| impl_->AdvanceFrame(); |
| } |
| |
| render_tree::ResourceProvider* HardwareRasterizer::GetResourceProvider() { |
| return impl_->GetResourceProvider(); |
| } |
| |
| GrContext* HardwareRasterizer::GetGrContext() { |
| return impl_->GetGrContext(); |
| } |
| |
| void HardwareRasterizer::MakeCurrent() { return impl_->MakeCurrent(); } |
| |
| } // namespace skia |
| } // namespace rasterizer |
| } // namespace renderer |
| } // namespace cobalt |