Bug 1764477 - Fix propagation of video bit depth changes to the output. r=aosmond

Previously, AsyncImagePipelineManager::UpdateImageKeys did not check bit depth when updating image keys, and WebRenderTextureHost did not correctly wrap GetColorDepth(). This caused the configuration not to correctly update.

Differential Revision: https://phabricator.services.mozilla.com/D143558

gfx/layers/wr/AsyncImagePipelineManager.cpp

@@ -251,13 +251,14 @@ Maybe<TextureHost::ResourceUpdateOp> AsyncImagePipelineManager::UpdateImageKeys(
   // If we already had a texture and the format hasn't changed, better to reuse
   // the image keys than create new ones.
   auto backend = aSceneBuilderTxn.GetBackendType();
-  bool canUpdate = !!previousTexture &&
-                   previousTexture->GetSize() == texture->GetSize() &&
-                   previousTexture->GetFormat() == texture->GetFormat() &&
-                   previousTexture->NeedsYFlip() == texture->NeedsYFlip() &&
-                   previousTexture->SupportsExternalCompositing(backend) ==
-                       texture->SupportsExternalCompositing(backend) &&
-                   aPipeline->mKeys.Length() == numKeys;
+  bool canUpdate =
+      !!previousTexture && previousTexture->GetSize() == texture->GetSize() &&
+      previousTexture->GetFormat() == texture->GetFormat() &&
+      previousTexture->GetColorDepth() == texture->GetColorDepth() &&
+      previousTexture->NeedsYFlip() == texture->NeedsYFlip() &&
+      previousTexture->SupportsExternalCompositing(backend) ==
+          texture->SupportsExternalCompositing(backend) &&
+      aPipeline->mKeys.Length() == numKeys;
 
   if (!canUpdate) {
     for (auto key : aPipeline->mKeys) {

gfx/layers/wr/WebRenderTextureHost.cpp

@@ -79,6 +79,10 @@ already_AddRefed<gfx::DataSourceSurface> WebRenderTextureHost::GetAsSurface() {
   return mWrappedTextureHost->GetAsSurface();
 }
 
+gfx::ColorDepth WebRenderTextureHost::GetColorDepth() const {
+  return mWrappedTextureHost->GetColorDepth();
+}
+
 gfx::YUVColorSpace WebRenderTextureHost::GetYUVColorSpace() const {
   return mWrappedTextureHost->GetYUVColorSpace();
 }

gfx/layers/wr/WebRenderTextureHost.h

@@ -46,6 +46,7 @@ class WebRenderTextureHost : public TextureHost {
 
   already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override;
 
+  gfx::ColorDepth GetColorDepth() const override;
   gfx::YUVColorSpace GetYUVColorSpace() const override;
   gfx::ColorRange GetColorRange() const override;