[Impeller] enable blending on RuntimeEffectsContents (#37509)

jonahwilliams · web-flow · commit a41712cec63a · 2022-11-11T04:17:14.000Z
diff --git a/impeller/entity/contents/runtime_effect_contents.cc b/impeller/entity/contents/runtime_effect_contents.cc
@@ -114,7 +114,8 @@ bool RuntimeEffectContents::Render(const ContentContext& renderer,
     VALIDATION_LOG << "Failed to set stage inputs for runtime effect pipeline.";
   }
   desc.SetVertexDescriptor(std::move(vertex_descriptor));
-  desc.SetColorAttachmentDescriptor(0u, {.format = PixelFormat::kDefaultColor});
+  desc.SetColorAttachmentDescriptor(
+      0u, {.format = PixelFormat::kDefaultColor, .blending_enabled = true});
   desc.SetStencilAttachmentDescriptors({});
   desc.SetStencilPixelFormat(PixelFormat::kDefaultStencil);
 

Original file line number	Diff line number	Diff line change
`@@ -114,7 +114,8 @@ bool RuntimeEffectContents::Render(const ContentContext& renderer,`
`114`	`114`	`VALIDATION_LOG << "Failed to set stage inputs for runtime effect pipeline.";`
`115`	`115`	`}`
`116`	`116`	`desc.SetVertexDescriptor(std::move(vertex_descriptor));`
`117`		`- desc.SetColorAttachmentDescriptor(0u, {.format = PixelFormat::kDefaultColor});`
	`117`	`+ desc.SetColorAttachmentDescriptor(`
	`118`	`+ 0u, {.format = PixelFormat::kDefaultColor, .blending_enabled = true});`
`118`	`119`	`desc.SetStencilAttachmentDescriptors({});`
`119`	`120`	`desc.SetStencilPixelFormat(PixelFormat::kDefaultStencil);`
`120`	`121`