summaryrefslogtreecommitdiffstats
path: root/gfx/webrender_bindings/RenderExternalTextureHost.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--gfx/webrender_bindings/RenderExternalTextureHost.h81
1 files changed, 81 insertions, 0 deletions
diff --git a/gfx/webrender_bindings/RenderExternalTextureHost.h b/gfx/webrender_bindings/RenderExternalTextureHost.h
new file mode 100644
index 0000000000..c3b13250c1
--- /dev/null
+++ b/gfx/webrender_bindings/RenderExternalTextureHost.h
@@ -0,0 +1,81 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_GFX_RENDEREXTERNALTEXTUREHOST_H
+#define MOZILLA_GFX_RENDEREXTERNALTEXTUREHOST_H
+
+#include "mozilla/layers/TextureHostOGL.h"
+#include "RenderTextureHostSWGL.h"
+
+namespace mozilla {
+namespace wr {
+
+/**
+ * RenderExternalTextureHost manages external textures used by WebRender on Mac.
+ * The motivation for this is to be able to use Apple Client Storage OpenGL
+ * extension, which makes it possible to avoid some copies during texture
+ * upload. This is especially helpful for high resolution video.
+ */
+class RenderExternalTextureHost final : public RenderTextureHostSWGL {
+ public:
+ RenderExternalTextureHost(uint8_t* aBuffer,
+ const layers::BufferDescriptor& aDescriptor);
+
+ wr::WrExternalImage Lock(uint8_t aChannelIndex, gl::GLContext* aGL) override;
+ void Unlock() override;
+ void PrepareForUse() override;
+ size_t Bytes() override {
+ return mSize.width * mSize.height * BytesPerPixel(mFormat);
+ }
+
+ // RenderTextureHostSWGL
+ size_t GetPlaneCount() const override;
+
+ gfx::SurfaceFormat GetFormat() const override;
+
+ gfx::ColorDepth GetColorDepth() const override;
+
+ gfx::YUVRangedColorSpace GetYUVColorSpace() const override;
+
+ bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
+ PlaneInfo& aPlaneInfo) override;
+
+ void UnmapPlanes() override;
+
+ private:
+ ~RenderExternalTextureHost();
+
+ bool CreateSurfaces();
+ void DeleteSurfaces();
+ void DeleteTextures();
+
+ uint8_t* GetBuffer() const { return mBuffer; }
+ bool InitializeIfNeeded();
+ bool IsReadyForDeletion();
+ bool IsYUV() const { return mFormat == gfx::SurfaceFormat::YUV; }
+ size_t PlaneCount() const { return IsYUV() ? 3 : 1; }
+ void UpdateTexture(size_t aIndex);
+ void UpdateTextures();
+
+ uint8_t* mBuffer;
+ layers::BufferDescriptor mDescriptor;
+
+ bool mInitialized;
+ bool mTextureUpdateNeeded;
+
+ gfx::IntSize mSize;
+ gfx::SurfaceFormat mFormat;
+
+ RefPtr<gl::GLContext> mGL;
+ RefPtr<gfx::DataSourceSurface> mSurfaces[3];
+ RefPtr<layers::DirectMapTextureSource> mTextureSources[3];
+ wr::WrExternalImage mImages[3];
+};
+
+} // namespace wr
+} // namespace mozilla
+
+#endif // MOZILLA_GFX_RENDEREXTERNALTEXTUREHOST_H