Bug 1601531 - Tag image descriptors with PREFER_COMPOSITOR_SURFACE where appropriate r=gw

Differential Revision: https://phabricator.services.mozilla.com/D55922

--HG--
extra : moz-landing-system : lando

gfx/layers/composite/GPUVideoTextureHost.cpp

@@ -137,13 +137,14 @@ uint32_t GPUVideoTextureHost::NumSubTextures() {
 
 void GPUVideoTextureHost::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   MOZ_ASSERT(EnsureWrappedTextureHost());
   if (!EnsureWrappedTextureHost()) {
     return;
   }
-  EnsureWrappedTextureHost()->PushResourceUpdates(aResources, aOp, aImageKeys,
+  EnsureWrappedTextureHost()->PushResourceUpdates(
-                                                  aExtID);
+      aResources, aOp, aImageKeys, aExtID, aPreferCompositorSurface);
 }
 
 void GPUVideoTextureHost::PushDisplayItems(

gfx/layers/composite/GPUVideoTextureHost.h

@@ -56,7 +56,8 @@ class GPUVideoTextureHost : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,

gfx/layers/composite/TextureHost.cpp

@@ -605,7 +605,8 @@ uint32_t BufferTextureHost::NumSubTextures() {
 
 void BufferTextureHost::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   auto method = aOp == TextureHost::ADD_IMAGE
                     ? &wr::TransactionBuilder::AddExternalImage
                     : &wr::TransactionBuilder::UpdateExternalImage;
@@ -617,7 +618,7 @@ void BufferTextureHost::PushResourceUpdates(
     wr::ImageDescriptor descriptor(
         GetSize(),
         ImageDataSerializer::ComputeRGBStride(GetFormat(), GetSize().width),
-        GetFormat());
+        GetFormat(), aPreferCompositorSurface);
     (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
   } else {
     MOZ_ASSERT(aImageKeys.length() == 3);
@@ -625,10 +626,12 @@ void BufferTextureHost::PushResourceUpdates(
     const layers::YCbCrDescriptor& desc = mDescriptor.get_YCbCrDescriptor();
     wr::ImageDescriptor yDescriptor(
         desc.ySize(), desc.yStride(),
-        SurfaceFormatForColorDepth(desc.colorDepth()));
+        SurfaceFormatForColorDepth(desc.colorDepth()),
+        aPreferCompositorSurface);
     wr::ImageDescriptor cbcrDescriptor(
         desc.cbCrSize(), desc.cbCrStride(),
-        SurfaceFormatForColorDepth(desc.colorDepth()));
+        SurfaceFormatForColorDepth(desc.colorDepth()),
+        aPreferCompositorSurface);
     (aResources.*method)(aImageKeys[0], yDescriptor, aExtID, imageType, 0);
     (aResources.*method)(aImageKeys[1], cbcrDescriptor, aExtID, imageType, 1);
     (aResources.*method)(aImageKeys[2], cbcrDescriptor, aExtID, imageType, 2);

gfx/layers/composite/TextureHost.h

@@ -661,7 +661,8 @@ class TextureHost : public AtomicRefCountedWithFinalize<TextureHost> {
   virtual void PushResourceUpdates(wr::TransactionBuilder& aResources,
                                    ResourceUpdateOp aOp,
                                    const Range<wr::ImageKey>& aImageKeys,
-                                   const wr::ExternalImageId& aExtID) {
+                                   const wr::ExternalImageId& aExtID,
+                                   const bool aPreferCompositorSurface) {
     MOZ_ASSERT_UNREACHABLE("Unimplemented");
   }
 
@@ -792,7 +793,8 @@ class BufferTextureHost : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,

gfx/layers/d3d11/TextureD3D11.cpp

@@ -1012,7 +1012,8 @@ uint32_t DXGITextureHostD3D11::NumSubTextures() {
 
 void DXGITextureHostD3D11::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   if (!gfx::gfxVars::UseWebRenderANGLE()) {
     MOZ_ASSERT_UNREACHABLE("unexpected to be called without ANGLE");
     return;
@@ -1029,7 +1030,8 @@ void DXGITextureHostD3D11::PushResourceUpdates(
     case gfx::SurfaceFormat::B8G8R8X8: {
       MOZ_ASSERT(aImageKeys.length() == 1);
 
-      wr::ImageDescriptor descriptor(mSize, GetFormat());
+      wr::ImageDescriptor descriptor(mSize, GetFormat(),
+                                     aPreferCompositorSurface);
       auto imageType =
           wr::ExternalImageType::TextureHandle(wr::TextureTarget::External);
       (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
@@ -1042,13 +1044,16 @@ void DXGITextureHostD3D11::PushResourceUpdates(
       MOZ_ASSERT(mSize.width % 2 == 0);
       MOZ_ASSERT(mSize.height % 2 == 0);
 
-      wr::ImageDescriptor descriptor0(mSize, mFormat == gfx::SurfaceFormat::NV12
+      wr::ImageDescriptor descriptor0(mSize,
-                                                 ? gfx::SurfaceFormat::A8
+                                      mFormat == gfx::SurfaceFormat::NV12
-                                                 : gfx::SurfaceFormat::A16);
+                                          ? gfx::SurfaceFormat::A8
+                                          : gfx::SurfaceFormat::A16,
+                                      aPreferCompositorSurface);
       wr::ImageDescriptor descriptor1(mSize / 2,
                                       mFormat == gfx::SurfaceFormat::NV12
                                           ? gfx::SurfaceFormat::R8G8
-                                          : gfx::SurfaceFormat::R16G16);
+                                          : gfx::SurfaceFormat::R16G16,
+                                      aPreferCompositorSurface);
       auto imageType =
           wr::ExternalImageType::TextureHandle(wr::TextureTarget::External);
       (aResources.*method)(aImageKeys[0], descriptor0, aExtID, imageType, 0);
@@ -1259,7 +1264,8 @@ uint32_t DXGIYCbCrTextureHostD3D11::NumSubTextures() {
 
 void DXGIYCbCrTextureHostD3D11::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   if (!gfx::gfxVars::UseWebRenderANGLE()) {
     MOZ_ASSERT_UNREACHABLE("unexpected to be called without ANGLE");
     return;
@@ -1280,9 +1286,11 @@ void DXGIYCbCrTextureHostD3D11::PushResourceUpdates(
       wr::ExternalImageType::TextureHandle(wr::TextureTarget::External);
 
   // y
-  wr::ImageDescriptor descriptor0(mSize, gfx::SurfaceFormat::A8);
+  wr::ImageDescriptor descriptor0(mSize, gfx::SurfaceFormat::A8,
+                                  aPreferCompositorSurface);
   // cb and cr
-  wr::ImageDescriptor descriptor1(mSizeCbCr, gfx::SurfaceFormat::A8);
+  wr::ImageDescriptor descriptor1(mSizeCbCr, gfx::SurfaceFormat::A8,
+                                  aPreferCompositorSurface);
   (aResources.*method)(aImageKeys[0], descriptor0, aExtID, imageType, 0);
   (aResources.*method)(aImageKeys[1], descriptor1, aExtID, imageType, 1);
   (aResources.*method)(aImageKeys[2], descriptor1, aExtID, imageType, 2);

gfx/layers/d3d11/TextureD3D11.h

@@ -354,7 +354,8 @@ class DXGITextureHostD3D11 : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,
@@ -422,7 +423,8 @@ class DXGIYCbCrTextureHostD3D11 : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,

gfx/layers/opengl/MacIOSurfaceTextureHostOGL.cpp

@@ -160,7 +160,8 @@ uint32_t MacIOSurfaceTextureHostOGL::NumSubTextures() {
 
 void MacIOSurfaceTextureHostOGL::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   MOZ_ASSERT(mSurface);
 
   auto method = aOp == TextureHost::ADD_IMAGE
@@ -179,7 +180,8 @@ void MacIOSurfaceTextureHostOGL::PushResourceUpdates(
       auto format = GetFormat() == gfx::SurfaceFormat::R8G8B8A8
                         ? gfx::SurfaceFormat::B8G8R8A8
                         : gfx::SurfaceFormat::B8G8R8X8;
-      wr::ImageDescriptor descriptor(GetSize(), format);
+      wr::ImageDescriptor descriptor(GetSize(), format,
+                                     aPreferCompositorSurface);
       (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
       break;
     }
@@ -190,7 +192,8 @@ void MacIOSurfaceTextureHostOGL::PushResourceUpdates(
       // and YCbCr at OpenGL 3.1)
       MOZ_ASSERT(aImageKeys.length() == 1);
       MOZ_ASSERT(mSurface->GetPlaneCount() == 0);
-      wr::ImageDescriptor descriptor(GetSize(), gfx::SurfaceFormat::B8G8R8X8);
+      wr::ImageDescriptor descriptor(GetSize(), gfx::SurfaceFormat::B8G8R8X8,
+                                     aPreferCompositorSurface);
       (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
       break;
     }
@@ -200,11 +203,11 @@ void MacIOSurfaceTextureHostOGL::PushResourceUpdates(
       wr::ImageDescriptor descriptor0(
           gfx::IntSize(mSurface->GetDevicePixelWidth(0),
                        mSurface->GetDevicePixelHeight(0)),
-          gfx::SurfaceFormat::A8);
+          gfx::SurfaceFormat::A8, aPreferCompositorSurface);
       wr::ImageDescriptor descriptor1(
           gfx::IntSize(mSurface->GetDevicePixelWidth(1),
                        mSurface->GetDevicePixelHeight(1)),
-          gfx::SurfaceFormat::R8G8);
+          gfx::SurfaceFormat::R8G8, aPreferCompositorSurface);
       (aResources.*method)(aImageKeys[0], descriptor0, aExtID, imageType, 0);
       (aResources.*method)(aImageKeys[1], descriptor1, aExtID, imageType, 1);
       break;

gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h

@@ -71,7 +71,8 @@ class MacIOSurfaceTextureHostOGL : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,

gfx/layers/opengl/TextureHostOGL.cpp

@@ -648,7 +648,8 @@ void SurfaceTextureHost::CreateRenderTexture(
 
 void SurfaceTextureHost::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   auto method = aOp == TextureHost::ADD_IMAGE
                     ? &wr::TransactionBuilder::AddExternalImage
                     : &wr::TransactionBuilder::UpdateExternalImage;
@@ -665,7 +666,8 @@ void SurfaceTextureHost::PushResourceUpdates(
       auto format = GetFormat() == gfx::SurfaceFormat::R8G8B8A8
                         ? gfx::SurfaceFormat::B8G8R8A8
                         : gfx::SurfaceFormat::B8G8R8X8;
-      wr::ImageDescriptor descriptor(GetSize(), format);
+      wr::ImageDescriptor descriptor(GetSize(), format,
+                                     aPreferCompositorSurface);
       (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
       break;
     }
@@ -854,7 +856,8 @@ void EGLImageTextureHost::CreateRenderTexture(
 
 void EGLImageTextureHost::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   auto method = aOp == TextureHost::ADD_IMAGE
                     ? &wr::TransactionBuilder::AddExternalImage
                     : &wr::TransactionBuilder::UpdateExternalImage;
@@ -870,7 +873,8 @@ void EGLImageTextureHost::PushResourceUpdates(
   auto formatTmp = format == gfx::SurfaceFormat::R8G8B8A8
                        ? gfx::SurfaceFormat::B8G8R8A8
                        : gfx::SurfaceFormat::B8G8R8X8;
-  wr::ImageDescriptor descriptor(GetSize(), formatTmp);
+  wr::ImageDescriptor descriptor(GetSize(), formatTmp,
+                                 aPreferCompositorSurface);
   (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
 }
 

gfx/layers/opengl/TextureHostOGL.h

@@ -433,7 +433,8 @@ class SurfaceTextureHost : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,
@@ -538,7 +539,8 @@ class EGLImageTextureHost final : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,

gfx/layers/opengl/WaylandDMABUFTextureHostOGL.cpp

@@ -101,7 +101,8 @@ void WaylandDMABUFTextureHostOGL::CreateRenderTexture(
 
 void WaylandDMABUFTextureHostOGL::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   MOZ_ASSERT(mSurface);
 
   auto method = aOp == TextureHost::ADD_IMAGE
@@ -120,7 +121,8 @@ void WaylandDMABUFTextureHostOGL::PushResourceUpdates(
   auto formatTmp = format == gfx::SurfaceFormat::R8G8B8A8
                        ? gfx::SurfaceFormat::B8G8R8A8
                        : gfx::SurfaceFormat::B8G8R8X8;
-  wr::ImageDescriptor descriptor(GetSize(), formatTmp);
+  wr::ImageDescriptor descriptor(GetSize(), formatTmp,
+                                 aPreferCompositorSurface);
   (aResources.*method)(aImageKeys[0], descriptor, aExtID, imageType, 0);
 }
 

gfx/layers/opengl/WaylandDMABUFTextureHostOGL.h

@@ -58,7 +58,8 @@ class WaylandDMABUFTextureHostOGL : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,

gfx/layers/wr/AsyncImagePipelineManager.cpp

@@ -266,7 +266,8 @@ Maybe<TextureHost::ResourceUpdateOp> AsyncImagePipelineManager::UpdateImageKeys(
 
   Range<wr::ImageKey> keys(&aKeys[0], aKeys.Length());
   auto externalImageKey = wrTexture->GetExternalImageKey();
-  wrTexture->PushResourceUpdates(aMaybeFastTxn, op, keys, externalImageKey);
+  wrTexture->PushResourceUpdates(aMaybeFastTxn, op, keys, externalImageKey,
+                                 /* aPreferCompositorSurface */ true);
 
   return Some(op);
 }

gfx/layers/wr/WebRenderBridgeParent.cpp

@@ -828,7 +828,8 @@ bool WebRenderBridgeParent::PushExternalImageForTexture(
     WebRenderTextureHost* wrTexture = aTexture->AsWebRenderTextureHost();
     if (wrTexture) {
       wrTexture->PushResourceUpdates(aResources, op, keys,
-                                     wrTexture->GetExternalImageKey());
+                                     wrTexture->GetExternalImageKey(),
+                                     /* aPreferCompositorSurface */ false);
       auto it = mTextureHosts.find(wr::AsUint64(aKey));
       MOZ_ASSERT((it == mTextureHosts.end() && !aIsUpdate) ||
                  (it != mTextureHosts.end() && aIsUpdate));

gfx/layers/wr/WebRenderTextureHost.cpp

@@ -197,11 +197,13 @@ uint32_t WebRenderTextureHost::NumSubTextures() {
 
 void WebRenderTextureHost::PushResourceUpdates(
     wr::TransactionBuilder& aResources, ResourceUpdateOp aOp,
-    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID) {
+    const Range<wr::ImageKey>& aImageKeys, const wr::ExternalImageId& aExtID,
+    const bool aPreferCompositorSurface) {
   MOZ_ASSERT(mWrappedTextureHost);
   MOZ_ASSERT(mExternalImageId == aExtID);
 
-  mWrappedTextureHost->PushResourceUpdates(aResources, aOp, aImageKeys, aExtID);
+  mWrappedTextureHost->PushResourceUpdates(aResources, aOp, aImageKeys, aExtID,
+                                           aPreferCompositorSurface);
 }
 
 void WebRenderTextureHost::PushDisplayItems(

gfx/layers/wr/WebRenderTextureHost.h

@@ -75,7 +75,8 @@ class WebRenderTextureHost : public TextureHost {
   void PushResourceUpdates(wr::TransactionBuilder& aResources,
                            ResourceUpdateOp aOp,
                            const Range<wr::ImageKey>& aImageKeys,
-                           const wr::ExternalImageId& aExtID) override;
+                           const wr::ExternalImageId& aExtID,
+                           const bool aPreferCompositorSurface) override;
 
   void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                         const wr::LayoutRect& aBounds,

gfx/webrender_bindings/WebRenderTypes.h

@@ -197,34 +197,41 @@ struct ImageDescriptor : public wr::WrImageDescriptor {
     height = 0;
     stride = 0;
     opacity = OpacityType::HasAlphaChannel;
+    prefer_compositor_surface = false;
   }
 
-  ImageDescriptor(const gfx::IntSize& aSize, gfx::SurfaceFormat aFormat) {
+  ImageDescriptor(const gfx::IntSize& aSize, gfx::SurfaceFormat aFormat,
+                  bool aPreferCompositorSurface = false) {
     format = wr::SurfaceFormatToImageFormat(aFormat).value();
     width = aSize.width;
     height = aSize.height;
     stride = 0;
     opacity = gfx::IsOpaque(aFormat) ? OpacityType::Opaque
                                      : OpacityType::HasAlphaChannel;
+    prefer_compositor_surface = aPreferCompositorSurface;
   }
 
   ImageDescriptor(const gfx::IntSize& aSize, uint32_t aByteStride,
-                  gfx::SurfaceFormat aFormat) {
+                  gfx::SurfaceFormat aFormat,
+                  bool aPreferCompositorSurface = false) {
     format = wr::SurfaceFormatToImageFormat(aFormat).value();
     width = aSize.width;
     height = aSize.height;
     stride = aByteStride;
     opacity = gfx::IsOpaque(aFormat) ? OpacityType::Opaque
                                      : OpacityType::HasAlphaChannel;
+    prefer_compositor_surface = aPreferCompositorSurface;
   }
 
   ImageDescriptor(const gfx::IntSize& aSize, uint32_t aByteStride,
-                  gfx::SurfaceFormat aFormat, OpacityType aOpacity) {
+                  gfx::SurfaceFormat aFormat, OpacityType aOpacity,
+                  bool aPreferCompositorSurface = false) {
     format = wr::SurfaceFormatToImageFormat(aFormat).value();
     width = aSize.width;
     height = aSize.height;
     stride = aByteStride;
     opacity = aOpacity;
+    prefer_compositor_surface = aPreferCompositorSurface;
   }
 };
 

gfx/webrender_bindings/src/bindings.rs

@@ -352,6 +352,7 @@ pub struct WrImageDescriptor {
     pub height: i32,
     pub stride: i32,
     pub opacity: OpacityType,
+    pub prefer_compositor_surface: bool,
 }
 
 impl<'a> Into<ImageDescriptor> for &'a WrImageDescriptor {
@@ -362,6 +363,10 @@ impl<'a> Into<ImageDescriptor> for &'a WrImageDescriptor {
             flags |= ImageDescriptorFlags::IS_OPAQUE;
         }
 
+        if self.prefer_compositor_surface {
+            flags |= ImageDescriptorFlags::PREFER_COMPOSITOR_SURFACE;
+        }
+
         ImageDescriptor {
             size: DeviceIntSize::new(self.width, self.height),
             stride: if self.stride != 0 {