Migrate SweepGradientContents

flutter · Feb 13, 2024 · fa205f4 · fa205f4
1 parent cc002a7
commit fa205f4
Showing 1 changed file with 66 additions and 96 deletions.
diff --git a/impeller/entity/contents/sweep_gradient_contents.cc b/impeller/entity/contents/sweep_gradient_contents.cc
@@ -76,57 +76,42 @@ bool SweepGradientContents::RenderSSBO(const ContentContext& renderer,
   using VS = SweepGradientSSBOFillPipeline::VertexShader;
   using FS = SweepGradientSSBOFillPipeline::FragmentShader;
 
-  FS::FragInfo frag_info;
-  frag_info.center = center_;
-  frag_info.bias = bias_;
-  frag_info.scale = scale_;
-  frag_info.tile_mode = static_cast<Scalar>(tile_mode_);
-  frag_info.decal_border_color = decal_border_color_;
-  frag_info.alpha = GetOpacityFactor();
-
-  auto& host_buffer = renderer.GetTransientsBuffer();
-  auto colors = CreateGradientColors(colors_, stops_);
-
-  frag_info.colors_length = colors.size();
-  auto color_buffer =
-      host_buffer.Emplace(colors.data(), colors.size() * sizeof(StopData),
-                          DefaultUniformAlignment());
-
   VS::FrameInfo frame_info;
-  frame_info.depth = entity.GetShaderClipDepth();
-  frame_info.mvp = pass.GetOrthographicTransform() * entity.GetTransform();
   frame_info.matrix = GetInverseEffectTransform();
-
-  auto geometry_result =
-      GetGeometry()->GetPositionBuffer(renderer, entity, pass);
-
-  auto options = OptionsFromPassAndEntity(pass, entity);
-  if (geometry_result.prevent_overdraw) {
-    options.stencil_mode =
-        ContentContextOptions::StencilMode::kLegacyClipIncrement;
-  }
-  options.primitive_type = geometry_result.type;
-
-  pass.SetCommandLabel("SweepGradientSSBOFill");
-  pass.SetStencilReference(entity.GetClipDepth());
-  pass.SetPipeline(renderer.GetSweepGradientSSBOFillPipeline(options));
-  pass.SetVertexBuffer(std::move(geometry_result.vertex_buffer));
-  FS::BindFragInfo(pass,
-                   renderer.GetTransientsBuffer().EmplaceUniform(frag_info));
-  FS::BindColorData(pass, color_buffer);
   VS::BindFrameInfo(pass,
                     renderer.GetTransientsBuffer().EmplaceUniform(frame_info));
 
-  if (!pass.Draw().ok()) {
-    return false;
-  }
-
-  if (geometry_result.prevent_overdraw) {
-    auto restore = ClipRestoreContents();
-    restore.SetRestoreCoverage(GetCoverage(entity));
-    return restore.Render(renderer, entity, pass);
-  }
-  return true;
+  PipelineBuilderCallback pipeline_callback =
+      [&renderer](ContentContextOptions options) {
+        return renderer.GetSweepGradientSSBOFillPipeline(options);
+      };
+  return ColorSourceContents::DrawPositions<VS>(
+      renderer, entity, pass, pipeline_callback, frame_info,
+      [this, &renderer](RenderPass& pass) {
+        FS::FragInfo frag_info;
+        frag_info.center = center_;
+        frag_info.bias = bias_;
+        frag_info.scale = scale_;
+        frag_info.tile_mode = static_cast<Scalar>(tile_mode_);
+        frag_info.decal_border_color = decal_border_color_;
+        frag_info.alpha = GetOpacityFactor();
+
+        auto& host_buffer = renderer.GetTransientsBuffer();
+        auto colors = CreateGradientColors(colors_, stops_);
+
+        frag_info.colors_length = colors.size();
+        auto color_buffer =
+            host_buffer.Emplace(colors.data(), colors.size() * sizeof(StopData),
+                                DefaultUniformAlignment());
+
+        pass.SetCommandLabel("SweepGradientSSBOFill");
+
+        FS::BindFragInfo(
+            pass, renderer.GetTransientsBuffer().EmplaceUniform(frag_info));
+        FS::BindColorData(pass, color_buffer);
+
+        return true;
+      });
 }
 
 bool SweepGradientContents::RenderTexture(const ContentContext& renderer,
@@ -142,59 +127,44 @@ bool SweepGradientContents::RenderTexture(const ContentContext& renderer,
     return false;
   }
 
-  FS::FragInfo frag_info;
-  frag_info.center = center_;
-  frag_info.bias = bias_;
-  frag_info.scale = scale_;
-  frag_info.texture_sampler_y_coord_scale = gradient_texture->GetYCoordScale();
-  frag_info.tile_mode = static_cast<Scalar>(tile_mode_);
-  frag_info.decal_border_color = decal_border_color_;
-  frag_info.alpha = GetOpacityFactor();
-  frag_info.half_texel = Vector2(0.5 / gradient_texture->GetSize().width,
-                                 0.5 / gradient_texture->GetSize().height);
-
-  auto geometry_result =
-      GetGeometry()->GetPositionBuffer(renderer, entity, pass);
-
   VS::FrameInfo frame_info;
-  frame_info.depth = entity.GetShaderClipDepth();
-  frame_info.mvp = geometry_result.transform;
   frame_info.matrix = GetInverseEffectTransform();
 
-  auto options = OptionsFromPassAndEntity(pass, entity);
-  if (geometry_result.prevent_overdraw) {
-    options.stencil_mode =
-        ContentContextOptions::StencilMode::kLegacyClipIncrement;
-  }
-  options.primitive_type = geometry_result.type;
-
-  SamplerDescriptor sampler_desc;
-  sampler_desc.min_filter = MinMagFilter::kLinear;
-  sampler_desc.mag_filter = MinMagFilter::kLinear;
-
-  pass.SetCommandLabel("SweepGradientFill");
-  pass.SetStencilReference(entity.GetClipDepth());
-  pass.SetPipeline(renderer.GetSweepGradientFillPipeline(options));
-  pass.SetVertexBuffer(std::move(geometry_result.vertex_buffer));
-
-  FS::BindFragInfo(pass,
-                   renderer.GetTransientsBuffer().EmplaceUniform(frag_info));
-  VS::BindFrameInfo(pass,
-                    renderer.GetTransientsBuffer().EmplaceUniform(frame_info));
-  FS::BindTextureSampler(
-      pass, gradient_texture,
-      renderer.GetContext()->GetSamplerLibrary()->GetSampler(sampler_desc));
-
-  if (!pass.Draw().ok()) {
-    return false;
-  }
-
-  if (geometry_result.prevent_overdraw) {
-    auto restore = ClipRestoreContents();
-    restore.SetRestoreCoverage(GetCoverage(entity));
-    return restore.Render(renderer, entity, pass);
-  }
-  return true;
+  PipelineBuilderCallback pipeline_callback =
+      [&renderer](ContentContextOptions options) {
+        return renderer.GetSweepGradientFillPipeline(options);
+      };
+  return ColorSourceContents::DrawPositions<VS>(
+      renderer, entity, pass, pipeline_callback, frame_info,
+      [this, &renderer, &gradient_texture](RenderPass& pass) {
+        FS::FragInfo frag_info;
+        frag_info.center = center_;
+        frag_info.bias = bias_;
+        frag_info.scale = scale_;
+        frag_info.texture_sampler_y_coord_scale =
+            gradient_texture->GetYCoordScale();
+        frag_info.tile_mode = static_cast<Scalar>(tile_mode_);
+        frag_info.decal_border_color = decal_border_color_;
+        frag_info.alpha = GetOpacityFactor();
+        frag_info.half_texel =
+            Vector2(0.5 / gradient_texture->GetSize().width,
+                    0.5 / gradient_texture->GetSize().height);
+
+        SamplerDescriptor sampler_desc;
+        sampler_desc.min_filter = MinMagFilter::kLinear;
+        sampler_desc.mag_filter = MinMagFilter::kLinear;
+
+        pass.SetCommandLabel("SweepGradientFill");
+
+        FS::BindFragInfo(
+            pass, renderer.GetTransientsBuffer().EmplaceUniform(frag_info));
+        FS::BindTextureSampler(
+            pass, gradient_texture,
+            renderer.GetContext()->GetSamplerLibrary()->GetSampler(
+                sampler_desc));
+
+        return true;
+      });
 }
 
 bool SweepGradientContents::ApplyColorFilter(