| // Copyright 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/viz/service/display/software_renderer.h" |
| |
| #include "base/trace_event/trace_event.h" |
| #include "cc/base/math_util.h" |
| #include "cc/paint/image_provider.h" |
| #include "cc/paint/render_surface_filters.h" |
| #include "components/viz/common/display/renderer_settings.h" |
| #include "components/viz/common/frame_sinks/copy_output_request.h" |
| #include "components/viz/common/frame_sinks/copy_output_util.h" |
| #include "components/viz/common/quads/debug_border_draw_quad.h" |
| #include "components/viz/common/quads/picture_draw_quad.h" |
| #include "components/viz/common/quads/render_pass_draw_quad.h" |
| #include "components/viz/common/quads/solid_color_draw_quad.h" |
| #include "components/viz/common/quads/texture_draw_quad.h" |
| #include "components/viz/common/quads/tile_draw_quad.h" |
| #include "components/viz/service/display/output_surface.h" |
| #include "components/viz/service/display/output_surface_frame.h" |
| #include "components/viz/service/display/renderer_utils.h" |
| #include "components/viz/service/display/software_output_device.h" |
| #include "skia/ext/image_operations.h" |
| #include "skia/ext/opacity_filter_canvas.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkColor.h" |
| #include "third_party/skia/include/core/SkColorSpaceXformCanvas.h" |
| #include "third_party/skia/include/core/SkImageFilter.h" |
| #include "third_party/skia/include/core/SkMatrix.h" |
| #include "third_party/skia/include/core/SkPath.h" |
| #include "third_party/skia/include/core/SkPoint.h" |
| #include "third_party/skia/include/core/SkShader.h" |
| #include "third_party/skia/include/effects/SkShaderMaskFilter.h" |
| #include "ui/gfx/geometry/axis_transform2d.h" |
| #include "ui/gfx/geometry/rect_conversions.h" |
| #include "ui/gfx/skia_util.h" |
| #include "ui/gfx/transform.h" |
| |
| namespace viz { |
| namespace { |
| class AnimatedImagesProvider : public cc::ImageProvider { |
| public: |
| AnimatedImagesProvider( |
| const PictureDrawQuad::ImageAnimationMap* image_animation_map) |
| : image_animation_map_(image_animation_map) {} |
| ~AnimatedImagesProvider() override = default; |
| |
| ScopedDecodedDrawImage GetDecodedDrawImage( |
| const cc::DrawImage& draw_image) override { |
| const auto& paint_image = draw_image.paint_image(); |
| auto it = image_animation_map_->find(paint_image.stable_id()); |
| size_t frame_index = it == image_animation_map_->end() |
| ? cc::PaintImage::kDefaultFrameIndex |
| : it->second; |
| return ScopedDecodedDrawImage(cc::DecodedDrawImage( |
| paint_image.GetSkImageForFrame( |
| frame_index, cc::PaintImage::kDefaultGeneratorClientId), |
| SkSize::Make(0, 0), SkSize::Make(1.f, 1.f), draw_image.filter_quality(), |
| true /* is_budgeted */)); |
| } |
| |
| private: |
| const PictureDrawQuad::ImageAnimationMap* image_animation_map_; |
| }; |
| |
| } // namespace |
| |
| SoftwareRenderer::SoftwareRenderer(const RendererSettings* settings, |
| OutputSurface* output_surface, |
| DisplayResourceProvider* resource_provider) |
| : DirectRenderer(settings, output_surface, resource_provider), |
| output_device_(output_surface->software_device()) {} |
| |
| SoftwareRenderer::~SoftwareRenderer() {} |
| |
| bool SoftwareRenderer::CanPartialSwap() { |
| return true; |
| } |
| |
| void SoftwareRenderer::BeginDrawingFrame() { |
| TRACE_EVENT0("viz", "SoftwareRenderer::BeginDrawingFrame"); |
| root_canvas_ = output_device_->BeginPaint(current_frame()->root_damage_rect); |
| } |
| |
| void SoftwareRenderer::FinishDrawingFrame() { |
| TRACE_EVENT0("viz", "SoftwareRenderer::FinishDrawingFrame"); |
| current_framebuffer_canvas_.reset(); |
| current_canvas_ = nullptr; |
| root_canvas_ = nullptr; |
| |
| output_device_->EndPaint(); |
| } |
| |
| void SoftwareRenderer::SwapBuffers(std::vector<ui::LatencyInfo> latency_info) { |
| DCHECK(visible_); |
| TRACE_EVENT0("viz", "SoftwareRenderer::SwapBuffers"); |
| OutputSurfaceFrame output_frame; |
| output_frame.latency_info = std::move(latency_info); |
| output_surface_->SwapBuffers(std::move(output_frame)); |
| } |
| |
| bool SoftwareRenderer::FlippedFramebuffer() const { |
| return false; |
| } |
| |
| void SoftwareRenderer::EnsureScissorTestEnabled() { |
| is_scissor_enabled_ = true; |
| } |
| |
| void SoftwareRenderer::EnsureScissorTestDisabled() { |
| is_scissor_enabled_ = false; |
| } |
| |
| void SoftwareRenderer::BindFramebufferToOutputSurface() { |
| DCHECK(!output_surface_->HasExternalStencilTest()); |
| current_framebuffer_canvas_.reset(); |
| current_canvas_ = root_canvas_; |
| } |
| |
| void SoftwareRenderer::BindFramebufferToTexture( |
| const RenderPassId render_pass_id) { |
| auto it = render_pass_bitmaps_.find(render_pass_id); |
| DCHECK(it != render_pass_bitmaps_.end()); |
| SkBitmap& bitmap = it->second; |
| |
| current_framebuffer_canvas_ = std::make_unique<SkCanvas>(bitmap); |
| current_canvas_ = current_framebuffer_canvas_.get(); |
| } |
| |
| void SoftwareRenderer::SetScissorTestRect(const gfx::Rect& scissor_rect) { |
| is_scissor_enabled_ = true; |
| scissor_rect_ = scissor_rect; |
| } |
| |
| void SoftwareRenderer::SetClipRect(const gfx::Rect& rect) { |
| if (!current_canvas_) |
| return; |
| // Skia applies the current matrix to clip rects so we reset it temporary. |
| SkMatrix current_matrix = current_canvas_->getTotalMatrix(); |
| current_canvas_->resetMatrix(); |
| // SetClipRect is assumed to be applied temporarily, on an |
| // otherwise-unclipped canvas. |
| DCHECK_EQ(current_canvas_->getDeviceClipBounds().width(), |
| current_canvas_->imageInfo().width()); |
| DCHECK_EQ(current_canvas_->getDeviceClipBounds().height(), |
| current_canvas_->imageInfo().height()); |
| current_canvas_->clipRect(gfx::RectToSkRect(rect)); |
| current_canvas_->setMatrix(current_matrix); |
| } |
| |
| void SoftwareRenderer::ClearCanvas(SkColor color) { |
| if (!current_canvas_) |
| return; |
| |
| if (is_scissor_enabled_) { |
| // The same paint used by SkCanvas::clear, but applied to the scissor rect. |
| SkPaint clear_paint; |
| clear_paint.setColor(color); |
| clear_paint.setBlendMode(SkBlendMode::kSrc); |
| current_canvas_->drawRect(gfx::RectToSkRect(scissor_rect_), clear_paint); |
| } else { |
| current_canvas_->clear(color); |
| } |
| } |
| |
| void SoftwareRenderer::ClearFramebuffer() { |
| if (current_frame()->current_render_pass->has_transparent_background) { |
| ClearCanvas(SkColorSetARGB(0, 0, 0, 0)); |
| } else { |
| #ifndef NDEBUG |
| // On DEBUG builds, opaque render passes are cleared to blue |
| // to easily see regions that were not drawn on the screen. |
| ClearCanvas(SkColorSetARGB(255, 0, 0, 255)); |
| #endif |
| } |
| } |
| |
| void SoftwareRenderer::PrepareSurfaceForPass( |
| SurfaceInitializationMode initialization_mode, |
| const gfx::Rect& render_pass_scissor) { |
| switch (initialization_mode) { |
| case SURFACE_INITIALIZATION_MODE_PRESERVE: |
| EnsureScissorTestDisabled(); |
| return; |
| case SURFACE_INITIALIZATION_MODE_FULL_SURFACE_CLEAR: |
| EnsureScissorTestDisabled(); |
| ClearFramebuffer(); |
| break; |
| case SURFACE_INITIALIZATION_MODE_SCISSORED_CLEAR: |
| SetScissorTestRect(render_pass_scissor); |
| ClearFramebuffer(); |
| break; |
| } |
| } |
| |
| bool SoftwareRenderer::IsSoftwareResource(ResourceId resource_id) const { |
| return resource_provider_->IsResourceSoftwareBacked(resource_id); |
| } |
| |
| void SoftwareRenderer::DoDrawQuad(const DrawQuad* quad, |
| const gfx::QuadF* draw_region) { |
| if (!current_canvas_) |
| return; |
| |
| TRACE_EVENT0("viz", "SoftwareRenderer::DoDrawQuad"); |
| bool do_save = draw_region || is_scissor_enabled_; |
| SkAutoCanvasRestore canvas_restore(current_canvas_, do_save); |
| if (is_scissor_enabled_) { |
| SetClipRect(scissor_rect_); |
| } |
| |
| gfx::Transform quad_rect_matrix; |
| QuadRectTransform(&quad_rect_matrix, |
| quad->shared_quad_state->quad_to_target_transform, |
| gfx::RectF(quad->rect)); |
| gfx::Transform contents_device_transform = |
| current_frame()->window_matrix * current_frame()->projection_matrix * |
| quad_rect_matrix; |
| contents_device_transform.FlattenTo2d(); |
| SkMatrix sk_device_matrix; |
| gfx::TransformToFlattenedSkMatrix(contents_device_transform, |
| &sk_device_matrix); |
| current_canvas_->setMatrix(sk_device_matrix); |
| |
| current_paint_.reset(); |
| if (settings_->force_antialiasing || |
| !IsScaleAndIntegerTranslate(sk_device_matrix)) { |
| // TODO(danakj): Until we can enable AA only on exterior edges of the |
| // layer, disable AA if any interior edges are present. crbug.com/248175 |
| bool all_four_edges_are_exterior = |
| quad->IsTopEdge() && quad->IsLeftEdge() && quad->IsBottomEdge() && |
| quad->IsRightEdge(); |
| if (settings_->allow_antialiasing && |
| (settings_->force_antialiasing || all_four_edges_are_exterior)) |
| current_paint_.setAntiAlias(true); |
| current_paint_.setFilterQuality(kLow_SkFilterQuality); |
| } |
| |
| if (quad->ShouldDrawWithBlending() || |
| quad->shared_quad_state->blend_mode != SkBlendMode::kSrcOver) { |
| current_paint_.setAlpha(quad->shared_quad_state->opacity * 255); |
| current_paint_.setBlendMode(quad->shared_quad_state->blend_mode); |
| } else { |
| current_paint_.setBlendMode(SkBlendMode::kSrc); |
| } |
| |
| if (draw_region) { |
| gfx::QuadF local_draw_region(*draw_region); |
| SkPath draw_region_clip_path; |
| local_draw_region -= |
| gfx::Vector2dF(quad->visible_rect.x(), quad->visible_rect.y()); |
| local_draw_region.Scale(1.0f / quad->visible_rect.width(), |
| 1.0f / quad->visible_rect.height()); |
| local_draw_region -= gfx::Vector2dF(0.5f, 0.5f); |
| |
| SkPoint clip_points[4]; |
| QuadFToSkPoints(local_draw_region, clip_points); |
| draw_region_clip_path.addPoly(clip_points, 4, true); |
| |
| current_canvas_->clipPath(draw_region_clip_path); |
| } |
| |
| switch (quad->material) { |
| case DrawQuad::DEBUG_BORDER: |
| DrawDebugBorderQuad(DebugBorderDrawQuad::MaterialCast(quad)); |
| break; |
| case DrawQuad::PICTURE_CONTENT: |
| DrawPictureQuad(PictureDrawQuad::MaterialCast(quad)); |
| break; |
| case DrawQuad::RENDER_PASS: |
| DrawRenderPassQuad(RenderPassDrawQuad::MaterialCast(quad)); |
| break; |
| case DrawQuad::SOLID_COLOR: |
| DrawSolidColorQuad(SolidColorDrawQuad::MaterialCast(quad)); |
| break; |
| case DrawQuad::TEXTURE_CONTENT: |
| DrawTextureQuad(TextureDrawQuad::MaterialCast(quad)); |
| break; |
| case DrawQuad::TILED_CONTENT: |
| DrawTileQuad(TileDrawQuad::MaterialCast(quad)); |
| break; |
| case DrawQuad::SURFACE_CONTENT: |
| // Surface content should be fully resolved to other quad types before |
| // reaching a direct renderer. |
| NOTREACHED(); |
| break; |
| case DrawQuad::INVALID: |
| case DrawQuad::YUV_VIDEO_CONTENT: |
| case DrawQuad::STREAM_VIDEO_CONTENT: |
| DrawUnsupportedQuad(quad); |
| NOTREACHED(); |
| break; |
| } |
| |
| current_canvas_->resetMatrix(); |
| } |
| |
| void SoftwareRenderer::DrawDebugBorderQuad(const DebugBorderDrawQuad* quad) { |
| // We need to apply the matrix manually to have pixel-sized stroke width. |
| SkPoint vertices[4]; |
| gfx::RectFToSkRect(QuadVertexRect()).toQuad(vertices); |
| SkPoint transformed_vertices[4]; |
| current_canvas_->getTotalMatrix().mapPoints(transformed_vertices, vertices, |
| 4); |
| current_canvas_->resetMatrix(); |
| |
| current_paint_.setColor(quad->color); |
| current_paint_.setAlpha(quad->shared_quad_state->opacity * |
| SkColorGetA(quad->color)); |
| current_paint_.setStyle(SkPaint::kStroke_Style); |
| current_paint_.setStrokeWidth(quad->width); |
| current_canvas_->drawPoints(SkCanvas::kPolygon_PointMode, 4, |
| transformed_vertices, current_paint_); |
| } |
| |
| void SoftwareRenderer::DrawPictureQuad(const PictureDrawQuad* quad) { |
| SkMatrix content_matrix; |
| content_matrix.setRectToRect(gfx::RectFToSkRect(quad->tex_coord_rect), |
| gfx::RectFToSkRect(QuadVertexRect()), |
| SkMatrix::kFill_ScaleToFit); |
| current_canvas_->concat(content_matrix); |
| |
| const bool needs_transparency = |
| SkScalarRoundToInt(quad->shared_quad_state->opacity * 255) < 255; |
| const bool disable_image_filtering = |
| disable_picture_quad_image_filtering_ || quad->nearest_neighbor; |
| |
| TRACE_EVENT0("viz", "SoftwareRenderer::DrawPictureQuad"); |
| |
| SkCanvas* raster_canvas = current_canvas_; |
| |
| std::unique_ptr<SkCanvas> color_transform_canvas; |
| // TODO(enne): color transform needs to be replicated in gles2_cmd_decoder |
| color_transform_canvas = SkCreateColorSpaceXformCanvas( |
| current_canvas_, gfx::ColorSpace::CreateSRGB().ToSkColorSpace()); |
| raster_canvas = color_transform_canvas.get(); |
| |
| base::Optional<skia::OpacityFilterCanvas> opacity_canvas; |
| if (needs_transparency || disable_image_filtering) { |
| // TODO(aelias): This isn't correct in all cases. We should detect these |
| // cases and fall back to a persistent bitmap backing |
| // (http://crbug.com/280374). |
| // TODO(vmpstr): Fold this canvas into playback and have raster source |
| // accept a set of settings on playback that will determine which canvas to |
| // apply. (http://crbug.com/594679) |
| opacity_canvas.emplace(raster_canvas, quad->shared_quad_state->opacity, |
| disable_image_filtering); |
| raster_canvas = &*opacity_canvas; |
| } |
| |
| // Treat all subnormal values as zero for performance. |
| cc::ScopedSubnormalFloatDisabler disabler; |
| |
| // Use an image provider to select the correct frame for animated images. |
| AnimatedImagesProvider image_provider(&quad->image_animation_map); |
| |
| raster_canvas->save(); |
| raster_canvas->translate(-quad->content_rect.x(), -quad->content_rect.y()); |
| raster_canvas->clipRect(gfx::RectToSkRect(quad->content_rect)); |
| raster_canvas->scale(quad->contents_scale, quad->contents_scale); |
| quad->display_item_list->Raster(raster_canvas, &image_provider); |
| raster_canvas->restore(); |
| } |
| |
| void SoftwareRenderer::DrawSolidColorQuad(const SolidColorDrawQuad* quad) { |
| gfx::RectF visible_quad_vertex_rect = cc::MathUtil::ScaleRectProportional( |
| QuadVertexRect(), gfx::RectF(quad->rect), gfx::RectF(quad->visible_rect)); |
| current_paint_.setColor(quad->color); |
| current_paint_.setAlpha(quad->shared_quad_state->opacity * |
| SkColorGetA(quad->color)); |
| current_canvas_->drawRect(gfx::RectFToSkRect(visible_quad_vertex_rect), |
| current_paint_); |
| } |
| |
| void SoftwareRenderer::DrawTextureQuad(const TextureDrawQuad* quad) { |
| if (!IsSoftwareResource(quad->resource_id())) { |
| DrawUnsupportedQuad(quad); |
| return; |
| } |
| |
| // TODO(skaslev): Add support for non-premultiplied alpha. |
| DisplayResourceProvider::ScopedReadLockSkImage lock(resource_provider_, |
| quad->resource_id()); |
| if (!lock.valid()) |
| return; |
| const SkImage* image = lock.sk_image(); |
| gfx::RectF uv_rect = gfx::ScaleRect( |
| gfx::BoundingRect(quad->uv_top_left, quad->uv_bottom_right), |
| image->width(), image->height()); |
| gfx::RectF visible_uv_rect = cc::MathUtil::ScaleRectProportional( |
| uv_rect, gfx::RectF(quad->rect), gfx::RectF(quad->visible_rect)); |
| SkRect sk_uv_rect = gfx::RectFToSkRect(visible_uv_rect); |
| gfx::RectF visible_quad_vertex_rect = cc::MathUtil::ScaleRectProportional( |
| QuadVertexRect(), gfx::RectF(quad->rect), gfx::RectF(quad->visible_rect)); |
| SkRect quad_rect = gfx::RectFToSkRect(visible_quad_vertex_rect); |
| |
| if (quad->y_flipped) |
| current_canvas_->scale(1, -1); |
| |
| bool blend_background = |
| quad->background_color != SK_ColorTRANSPARENT && !image->isOpaque(); |
| bool needs_layer = blend_background && (current_paint_.getAlpha() != 0xFF); |
| if (needs_layer) { |
| current_canvas_->saveLayerAlpha(&quad_rect, current_paint_.getAlpha()); |
| current_paint_.setAlpha(0xFF); |
| } |
| if (blend_background) { |
| SkPaint background_paint; |
| background_paint.setColor(quad->background_color); |
| current_canvas_->drawRect(quad_rect, background_paint); |
| } |
| current_paint_.setFilterQuality( |
| quad->nearest_neighbor ? kNone_SkFilterQuality : kLow_SkFilterQuality); |
| current_canvas_->drawImageRect(image, sk_uv_rect, quad_rect, ¤t_paint_); |
| if (needs_layer) |
| current_canvas_->restore(); |
| } |
| |
| void SoftwareRenderer::DrawTileQuad(const TileDrawQuad* quad) { |
| // |resource_provider_| can be NULL in resourceless software draws, which |
| // should never produce tile quads in the first place. |
| DCHECK(resource_provider_); |
| DCHECK(IsSoftwareResource(quad->resource_id())); |
| |
| DisplayResourceProvider::ScopedReadLockSkImage lock(resource_provider_, |
| quad->resource_id()); |
| if (!lock.valid()) |
| return; |
| |
| gfx::RectF visible_tex_coord_rect = cc::MathUtil::ScaleRectProportional( |
| quad->tex_coord_rect, gfx::RectF(quad->rect), |
| gfx::RectF(quad->visible_rect)); |
| gfx::RectF visible_quad_vertex_rect = cc::MathUtil::ScaleRectProportional( |
| QuadVertexRect(), gfx::RectF(quad->rect), gfx::RectF(quad->visible_rect)); |
| |
| SkRect uv_rect = gfx::RectFToSkRect(visible_tex_coord_rect); |
| current_paint_.setFilterQuality( |
| quad->nearest_neighbor ? kNone_SkFilterQuality : kLow_SkFilterQuality); |
| current_canvas_->drawImageRect(lock.sk_image(), uv_rect, |
| gfx::RectFToSkRect(visible_quad_vertex_rect), |
| ¤t_paint_); |
| } |
| |
| void SoftwareRenderer::DrawRenderPassQuad(const RenderPassDrawQuad* quad) { |
| auto it = render_pass_bitmaps_.find(quad->render_pass_id); |
| if (it == render_pass_bitmaps_.end()) |
| return; |
| SkBitmap& source_bitmap = it->second; |
| |
| SkRect dest_rect = gfx::RectFToSkRect(QuadVertexRect()); |
| SkRect dest_visible_rect = |
| gfx::RectFToSkRect(cc::MathUtil::ScaleRectProportional( |
| QuadVertexRect(), gfx::RectF(quad->rect), |
| gfx::RectF(quad->visible_rect))); |
| SkRect content_rect = RectFToSkRect(quad->tex_coord_rect); |
| |
| sk_sp<SkImage> filter_image; |
| const cc::FilterOperations* filters = FiltersForPass(quad->render_pass_id); |
| if (filters) { |
| DCHECK(!filters->IsEmpty()); |
| auto paint_filter = cc::RenderSurfaceFilters::BuildImageFilter( |
| *filters, gfx::SizeF(source_bitmap.width(), source_bitmap.height())); |
| auto image_filter = |
| paint_filter ? paint_filter->cached_sk_filter_ : nullptr; |
| if (image_filter) { |
| SkIRect result_rect; |
| // TODO(ajuma): Apply the filter in the same pass as the content where |
| // possible (e.g. when there's no origin offset). See crbug.com/308201. |
| filter_image = ApplyImageFilter(image_filter.get(), quad, source_bitmap, |
| &result_rect); |
| if (result_rect.isEmpty()) { |
| return; |
| } |
| if (filter_image) { |
| gfx::RectF rect = gfx::SkRectToRectF(SkRect::Make(result_rect)); |
| dest_rect = dest_visible_rect = |
| gfx::RectFToSkRect(cc::MathUtil::ScaleRectProportional( |
| QuadVertexRect(), gfx::RectF(quad->rect), rect)); |
| content_rect = |
| SkRect::MakeWH(result_rect.width(), result_rect.height()); |
| } |
| } |
| } |
| |
| SkMatrix content_mat; |
| content_mat.setRectToRect(content_rect, dest_rect, |
| SkMatrix::kFill_ScaleToFit); |
| |
| sk_sp<SkShader> shader; |
| if (!filter_image) { |
| shader = |
| SkShader::MakeBitmapShader(source_bitmap, SkShader::kClamp_TileMode, |
| SkShader::kClamp_TileMode, &content_mat); |
| } else { |
| shader = filter_image->makeShader(SkShader::kClamp_TileMode, |
| SkShader::kClamp_TileMode, &content_mat); |
| } |
| |
| if (quad->mask_resource_id()) { |
| DisplayResourceProvider::ScopedReadLockSkImage mask_lock( |
| resource_provider_, quad->mask_resource_id()); |
| if (!mask_lock.valid()) |
| return; |
| |
| // Scale normalized uv rect into absolute texel coordinates. |
| SkRect mask_rect = gfx::RectFToSkRect( |
| gfx::ScaleRect(quad->mask_uv_rect, quad->mask_texture_size.width(), |
| quad->mask_texture_size.height())); |
| |
| SkMatrix mask_mat; |
| mask_mat.setRectToRect(mask_rect, dest_rect, SkMatrix::kFill_ScaleToFit); |
| |
| current_paint_.setMaskFilter( |
| SkShaderMaskFilter::Make(mask_lock.sk_image()->makeShader( |
| SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, &mask_mat))); |
| } |
| |
| // If we have a background filter shader, render its results first. |
| sk_sp<SkShader> background_filter_shader = |
| GetBackgroundFilterShader(quad, SkShader::kClamp_TileMode); |
| if (background_filter_shader) { |
| SkPaint paint; |
| paint.setShader(std::move(background_filter_shader)); |
| paint.setMaskFilter(current_paint_.refMaskFilter()); |
| current_canvas_->drawRect(dest_visible_rect, paint); |
| } |
| current_paint_.setShader(std::move(shader)); |
| current_canvas_->drawRect(dest_visible_rect, current_paint_); |
| } |
| |
| void SoftwareRenderer::DrawUnsupportedQuad(const DrawQuad* quad) { |
| #ifdef NDEBUG |
| current_paint_.setColor(SK_ColorWHITE); |
| #else |
| current_paint_.setColor(SK_ColorMAGENTA); |
| #endif |
| current_paint_.setAlpha(quad->shared_quad_state->opacity * 255); |
| current_canvas_->drawRect(gfx::RectFToSkRect(QuadVertexRect()), |
| current_paint_); |
| } |
| |
| void SoftwareRenderer::CopyDrawnRenderPass( |
| std::unique_ptr<CopyOutputRequest> request) { |
| // Finalize the source subrect, as the entirety of the RenderPass's output |
| // optionally clamped to the requested copy area. Then, compute the result |
| // rect, which is the selection clamped to the maximum possible result bounds. |
| // If there will be zero pixels of output or the scaling ratio was not |
| // reasonable, do not proceed. |
| gfx::Rect output_rect = current_frame()->current_render_pass->output_rect; |
| if (request->has_area()) |
| output_rect.Intersect(request->area()); |
| const gfx::Rect result_bounds = |
| request->is_scaled() ? copy_output::ComputeResultRect( |
| gfx::Rect(output_rect.size()), |
| request->scale_from(), request->scale_to()) |
| : gfx::Rect(output_rect.size()); |
| gfx::Rect result_rect = result_bounds; |
| if (request->has_result_selection()) |
| result_rect.Intersect(request->result_selection()); |
| if (result_rect.IsEmpty()) |
| return; |
| |
| sk_sp<SkColorSpace> color_space = |
| current_frame()->current_render_pass->color_space.ToSkColorSpace(); |
| DCHECK(color_space); |
| |
| SkBitmap bitmap; |
| if (request->is_scaled()) { |
| // Resolve the source for the scaling input: Initialize a SkPixmap that |
| // selects the current RenderPass's output rect within the current canvas |
| // and provides access to its pixels. |
| SkPixmap render_pass_output; |
| if (!current_canvas_->peekPixels(&render_pass_output)) |
| return; |
| { |
| const gfx::Rect subrect = MoveFromDrawToWindowSpace(output_rect); |
| render_pass_output = |
| SkPixmap(render_pass_output.info() |
| .makeWH(subrect.width(), subrect.height()) |
| .makeColorSpace(std::move(color_space)), |
| render_pass_output.addr(subrect.x(), subrect.y()), |
| render_pass_output.rowBytes()); |
| } |
| |
| // Execute the scaling: For downscaling, use the RESIZE_BETTER strategy |
| // (appropriate for thumbnailing); and, for upscaling, use the RESIZE_BEST |
| // strategy. Note that processing is only done on the subset of the |
| // RenderPass output that contributes to the result. |
| using skia::ImageOperations; |
| const bool is_downscale_in_both_dimensions = |
| request->scale_to().x() < request->scale_from().x() && |
| request->scale_to().y() < request->scale_from().y(); |
| const ImageOperations::ResizeMethod method = |
| is_downscale_in_both_dimensions ? ImageOperations::RESIZE_BETTER |
| : ImageOperations::RESIZE_BEST; |
| bitmap = ImageOperations::Resize( |
| render_pass_output, method, result_bounds.width(), |
| result_bounds.height(), |
| SkIRect{result_rect.x(), result_rect.y(), result_rect.right(), |
| result_rect.bottom()}); |
| } else /* if (!request->is_scaled()) */ { |
| const gfx::Rect window_copy_rect = |
| MoveFromDrawToWindowSpace(result_rect + output_rect.OffsetFromOrigin()); |
| bitmap.allocPixels(SkImageInfo::MakeN32Premul(window_copy_rect.width(), |
| window_copy_rect.height(), |
| std::move(color_space))); |
| if (!current_canvas_->readPixels(bitmap, window_copy_rect.x(), |
| window_copy_rect.y())) |
| return; |
| } |
| |
| // Deliver the result. SoftwareRenderer supports RGBA_BITMAP and I420_PLANES |
| // only. For legacy reasons, if a RGBA_TEXTURE request is being made, clients |
| // are prepared to accept RGBA_BITMAP results. |
| // |
| // TODO(crbug/754872): Get rid of the legacy behavior and send empty results |
| // for RGBA_TEXTURE requests once tab capture is moved into VIZ. |
| const CopyOutputResult::Format result_format = |
| (request->result_format() == CopyOutputResult::Format::RGBA_TEXTURE) |
| ? CopyOutputResult::Format::RGBA_BITMAP |
| : request->result_format(); |
| // Note: The CopyOutputSkBitmapResult automatically provides I420 format |
| // conversion, if needed. |
| request->SendResult(std::make_unique<CopyOutputSkBitmapResult>( |
| result_format, result_rect, bitmap)); |
| } |
| |
| void SoftwareRenderer::SetEnableDCLayers(bool enable) { |
| NOTIMPLEMENTED(); |
| } |
| |
| void SoftwareRenderer::DidChangeVisibility() { |
| if (visible_) |
| output_surface_->EnsureBackbuffer(); |
| else |
| output_surface_->DiscardBackbuffer(); |
| } |
| |
| void SoftwareRenderer::GenerateMipmap() { |
| NOTIMPLEMENTED(); |
| } |
| |
| bool SoftwareRenderer::ShouldApplyBackgroundFilters( |
| const RenderPassDrawQuad* quad, |
| const cc::FilterOperations* backdrop_filters) const { |
| if (!backdrop_filters) |
| return false; |
| DCHECK(!backdrop_filters->IsEmpty()); |
| return true; |
| } |
| |
| // If non-null, auto_bounds will be filled with the automatically-computed |
| // destination bounds. If null, the output will be the same size as the |
| // input bitmap. |
| sk_sp<SkImage> SoftwareRenderer::ApplyImageFilter( |
| SkImageFilter* filter, |
| const RenderPassDrawQuad* quad, |
| const SkBitmap& to_filter, |
| SkIRect* auto_bounds) const { |
| if (!filter) |
| return nullptr; |
| |
| SkMatrix local_matrix; |
| local_matrix.setTranslate(quad->filters_origin.x(), quad->filters_origin.y()); |
| local_matrix.postScale(quad->filters_scale.x(), quad->filters_scale.y()); |
| SkIRect dst_rect; |
| if (auto_bounds) { |
| dst_rect = |
| filter->filterBounds(gfx::RectToSkIRect(quad->rect), local_matrix, |
| SkImageFilter::kForward_MapDirection); |
| *auto_bounds = dst_rect; |
| } else { |
| dst_rect = to_filter.bounds(); |
| } |
| |
| SkImageInfo dst_info = |
| SkImageInfo::MakeN32Premul(dst_rect.width(), dst_rect.height()); |
| sk_sp<SkSurface> surface = SkSurface::MakeRaster(dst_info); |
| |
| if (!surface) { |
| return nullptr; |
| } |
| |
| SkPaint paint; |
| // Treat subnormal float values as zero for performance. |
| cc::ScopedSubnormalFloatDisabler disabler; |
| paint.setImageFilter(filter->makeWithLocalMatrix(local_matrix)); |
| surface->getCanvas()->translate(-dst_rect.x(), -dst_rect.y()); |
| surface->getCanvas()->drawBitmap(to_filter, quad->rect.x(), quad->rect.y(), |
| &paint); |
| |
| return surface->makeImageSnapshot(); |
| } |
| |
| SkBitmap SoftwareRenderer::GetBackdropBitmap( |
| const gfx::Rect& bounding_rect) const { |
| SkBitmap bitmap; |
| bitmap.allocPixels(SkImageInfo::MakeN32Premul(bounding_rect.width(), |
| bounding_rect.height())); |
| if (!current_canvas_->readPixels(bitmap, bounding_rect.x(), |
| bounding_rect.y())) |
| bitmap.reset(); |
| return bitmap; |
| } |
| |
| gfx::Rect SoftwareRenderer::GetBackdropBoundingBoxForRenderPassQuad( |
| const RenderPassDrawQuad* quad, |
| const gfx::Transform& contents_device_transform, |
| const cc::FilterOperations* backdrop_filters, |
| gfx::Rect* unclipped_rect) const { |
| DCHECK(ShouldApplyBackgroundFilters(quad, backdrop_filters)); |
| gfx::Rect backdrop_rect = gfx::ToEnclosingRect(cc::MathUtil::MapClippedRect( |
| contents_device_transform, QuadVertexRect())); |
| |
| SkMatrix matrix; |
| matrix.setScale(quad->filters_scale.x(), quad->filters_scale.y()); |
| backdrop_rect = backdrop_filters->MapRectReverse(backdrop_rect, matrix); |
| |
| *unclipped_rect = backdrop_rect; |
| backdrop_rect.Intersect(MoveFromDrawToWindowSpace( |
| current_frame()->current_render_pass->output_rect)); |
| |
| return backdrop_rect; |
| } |
| |
| sk_sp<SkShader> SoftwareRenderer::GetBackgroundFilterShader( |
| const RenderPassDrawQuad* quad, |
| SkShader::TileMode content_tile_mode) const { |
| const cc::FilterOperations* backdrop_filters = |
| BackgroundFiltersForPass(quad->render_pass_id); |
| const cc::FilterOperations* regular_filters = |
| FiltersForPass(quad->render_pass_id); |
| if (!ShouldApplyBackgroundFilters(quad, backdrop_filters)) |
| return nullptr; |
| |
| gfx::Transform quad_rect_matrix; |
| QuadRectTransform(&quad_rect_matrix, |
| quad->shared_quad_state->quad_to_target_transform, |
| gfx::RectF(quad->rect)); |
| gfx::Transform contents_device_transform = |
| current_frame()->window_matrix * current_frame()->projection_matrix * |
| quad_rect_matrix; |
| contents_device_transform.FlattenTo2d(); |
| |
| gfx::Rect unclipped_rect; |
| gfx::Rect backdrop_rect = GetBackdropBoundingBoxForRenderPassQuad( |
| quad, contents_device_transform, backdrop_filters, &unclipped_rect); |
| |
| // Figure out the transformations to move it back to pixel space. |
| gfx::Transform contents_device_transform_inverse; |
| if (!contents_device_transform.GetInverse(&contents_device_transform_inverse)) |
| return nullptr; |
| |
| SkMatrix filter_backdrop_transform = |
| contents_device_transform_inverse.matrix(); |
| filter_backdrop_transform.preTranslate(backdrop_rect.x(), backdrop_rect.y()); |
| |
| // Draw what's behind, and apply the filter to it. |
| SkBitmap backdrop_bitmap = GetBackdropBitmap(backdrop_rect); |
| |
| gfx::Vector2dF clipping_offset = |
| (unclipped_rect.top_right() - backdrop_rect.top_right()) + |
| (backdrop_rect.bottom_left() - unclipped_rect.bottom_left()); |
| |
| // Update the backdrop filter to include "regular" filters and opacity. |
| cc::FilterOperations backdrop_filters_plus_effects = *backdrop_filters; |
| if (regular_filters) { |
| for (const auto& filter_op : regular_filters->operations()) |
| backdrop_filters_plus_effects.Append(filter_op); |
| } |
| if (quad->shared_quad_state->opacity < 1.0) { |
| backdrop_filters_plus_effects.Append( |
| cc::FilterOperation::CreateOpacityFilter( |
| quad->shared_quad_state->opacity)); |
| } |
| |
| sk_sp<SkImageFilter> filter = |
| cc::RenderSurfaceFilters::BuildImageFilter( |
| backdrop_filters_plus_effects, |
| gfx::SizeF(backdrop_bitmap.width(), backdrop_bitmap.height()), |
| clipping_offset) |
| ->cached_sk_filter_; |
| sk_sp<SkImage> filter_backdrop_image = |
| ApplyImageFilter(filter.get(), quad, backdrop_bitmap, nullptr); |
| |
| if (!filter_backdrop_image) |
| return nullptr; |
| |
| return filter_backdrop_image->makeShader(content_tile_mode, content_tile_mode, |
| &filter_backdrop_transform); |
| } |
| |
| void SoftwareRenderer::UpdateRenderPassTextures( |
| const RenderPassList& render_passes_in_draw_order, |
| const base::flat_map<RenderPassId, RenderPassRequirements>& |
| render_passes_in_frame) { |
| std::vector<RenderPassId> passes_to_delete; |
| for (const auto& pair : render_pass_bitmaps_) { |
| auto render_pass_it = render_passes_in_frame.find(pair.first); |
| if (render_pass_it == render_passes_in_frame.end()) { |
| passes_to_delete.push_back(pair.first); |
| continue; |
| } |
| |
| gfx::Size required_size = render_pass_it->second.size; |
| // The RenderPassRequirements have a hint, which is only used for gpu |
| // compositing so it is ignored here. |
| const SkBitmap& bitmap = pair.second; |
| |
| bool size_appropriate = bitmap.width() >= required_size.width() && |
| bitmap.height() >= required_size.height(); |
| if (!size_appropriate) |
| passes_to_delete.push_back(pair.first); |
| } |
| |
| // Delete RenderPass bitmaps from the previous frame that will not be used |
| // again. |
| for (const RenderPassId& id : passes_to_delete) |
| render_pass_bitmaps_.erase(id); |
| } |
| |
| void SoftwareRenderer::AllocateRenderPassResourceIfNeeded( |
| const RenderPassId& render_pass_id, |
| const RenderPassRequirements& requirements) { |
| auto it = render_pass_bitmaps_.find(render_pass_id); |
| if (it != render_pass_bitmaps_.end()) |
| return; |
| |
| // The |requirements.mipmap| is only used for gpu-based rendering, so not used |
| // here. |
| // |
| // ColorSpace correctness for software compositing is a performance nightmare, |
| // so we don't do it. If we did, then the color space of the current frame's |
| // |current_render_pass| should be stored somewhere, but we should not set it |
| // on the bitmap itself. Instead, we'd use it with a SkColorSpaceXformCanvas |
| // that wraps the SkCanvas drawing into the bitmap. |
| SkImageInfo info = |
| SkImageInfo::MakeN32(requirements.size.width(), |
| requirements.size.height(), kPremul_SkAlphaType); |
| SkBitmap bitmap; |
| bitmap.allocPixels(info); |
| render_pass_bitmaps_.emplace(render_pass_id, std::move(bitmap)); |
| } |
| |
| bool SoftwareRenderer::IsRenderPassResourceAllocated( |
| const RenderPassId& render_pass_id) const { |
| auto it = render_pass_bitmaps_.find(render_pass_id); |
| return it != render_pass_bitmaps_.end(); |
| } |
| |
| gfx::Size SoftwareRenderer::GetRenderPassBackingPixelSize( |
| const RenderPassId& render_pass_id) { |
| auto it = render_pass_bitmaps_.find(render_pass_id); |
| DCHECK(it != render_pass_bitmaps_.end()); |
| SkBitmap& bitmap = it->second; |
| return gfx::Size(bitmap.width(), bitmap.height()); |
| } |
| |
| } // namespace viz |