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Backed out changeset 14dfa550c783 (bug 1167235)

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This commit is contained in:
Sebastian Hengst
2016-06-28 20:28:23 +02:00
parent d83be6668d
commit cf24627d37
12 changed files with 52 additions and 467 deletions
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117
gfx/layers/PersistentBufferProvider.h
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@@ -13,12 +13,6 @@
#include "mozilla/gfx/Types.h"
namespace mozilla {
namespace gfx {
class SourceSurface;
class DrawTarget;
}
namespace layers {
class CopyableCanvasLayer;
@@ -44,112 +38,43 @@ public:
*
* \param aPersistedRect This indicates the area of the DrawTarget that needs
* to have remained the same since the call to
* ReturnDrawTarget.
* ReturnAndUseDT.
*/
virtual already_AddRefed<gfx::DrawTarget> BorrowDrawTarget(const gfx::IntRect& aPersistedRect) = 0;
virtual already_AddRefed<gfx::DrawTarget> GetDT(const gfx::IntRect& aPersistedRect) = 0;
/**
* Return a DrawTarget to the PersistentBufferProvider and indicate the
* contents of this DrawTarget is to be considered current by the
* BufferProvider. The caller should forget any references to the DrawTarget.
*/
virtual bool ReturnDrawTarget(already_AddRefed<gfx::DrawTarget> aDT) = 0;
virtual bool ReturnAndUseDT(already_AddRefed<gfx::DrawTarget> aDT) = 0;
virtual already_AddRefed<gfx::SourceSurface> BorrowSnapshot() = 0;
virtual void ReturnSnapshot(already_AddRefed<gfx::SourceSurface> aSnapshot) = 0;
virtual TextureClient* GetTextureClient() { return nullptr; }
virtual already_AddRefed<gfx::SourceSurface> GetSnapshot() = 0;
protected:
};
class PersistentBufferProviderBasic : public PersistentBufferProvider
{
public:
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PersistentBufferProviderBasic, override)
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PersistentBufferProviderBasic)
static already_AddRefed<PersistentBufferProviderBasic>
Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat, gfx::BackendType aBackend);
explicit PersistentBufferProviderBasic(gfx::DrawTarget* aTarget);
virtual LayersBackend GetType() override { return LayersBackend::LAYERS_BASIC; }
virtual already_AddRefed<gfx::DrawTarget> BorrowDrawTarget(const gfx::IntRect& aPersistedRect) override;
virtual bool ReturnDrawTarget(already_AddRefed<gfx::DrawTarget> aDT) override;
virtual already_AddRefed<gfx::SourceSurface> BorrowSnapshot() override;
virtual void ReturnSnapshot(already_AddRefed<gfx::SourceSurface> aSnapshot) override;
PersistentBufferProviderBasic(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
gfx::BackendType aBackend);
explicit PersistentBufferProviderBasic(gfx::DrawTarget* aTarget) : mDrawTarget(aTarget) {}
bool IsValid() { return !!mDrawTarget; }
virtual LayersBackend GetType() { return LayersBackend::LAYERS_BASIC; }
already_AddRefed<gfx::DrawTarget> GetDT(const gfx::IntRect& aPersistedRect) {
RefPtr<gfx::DrawTarget> dt(mDrawTarget);
return dt.forget();
}
bool ReturnAndUseDT(already_AddRefed<gfx::DrawTarget> aDT) {
RefPtr<gfx::DrawTarget> dt(aDT);
MOZ_ASSERT(mDrawTarget == dt);
return true;
}
virtual already_AddRefed<gfx::SourceSurface> GetSnapshot() { return mDrawTarget->Snapshot(); }
private:
~PersistentBufferProviderBasic();
RefPtr<gfx::DrawTarget> mDrawTarget;
RefPtr<gfx::SourceSurface> mSnapshot;
};
/**
* Provides access to a buffer which can be sent to the compositor without
* requiring a copy.
*/
class PersistentBufferProviderShared : public PersistentBufferProvider
{
public:
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PersistentBufferProviderShared, override)
static already_AddRefed<PersistentBufferProviderShared>
Create(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
CompositableForwarder* aFwd);
virtual LayersBackend GetType() override { return LayersBackend::LAYERS_CLIENT; }
virtual already_AddRefed<gfx::DrawTarget> BorrowDrawTarget(const gfx::IntRect& aPersistedRect) override;
virtual bool ReturnDrawTarget(already_AddRefed<gfx::DrawTarget> aDT) override;
virtual already_AddRefed<gfx::SourceSurface> BorrowSnapshot() override;
virtual void ReturnSnapshot(already_AddRefed<gfx::SourceSurface> aSnapshot) override;
TextureClient* GetTextureClient() override {
return mFront;
}
protected:
PersistentBufferProviderShared(gfx::IntSize aSize, gfx::SurfaceFormat aFormat,
CompositableForwarder* aFwd,
RefPtr<TextureClient>& aTexture);
~PersistentBufferProviderShared();
gfx::IntSize mSize;
gfx::SurfaceFormat mFormat;
RefPtr<CompositableForwarder> mFwd;
RefPtr<TextureClient> mFront;
RefPtr<TextureClient> mBack;
RefPtr<gfx::DrawTarget> mDrawTarget;
RefPtr<gfx::SourceSurface > mSnapshot;
};
struct AutoReturnSnapshot
{
PersistentBufferProvider* mBufferProvider;
RefPtr<gfx::SourceSurface>* mSnapshot;
explicit AutoReturnSnapshot(PersistentBufferProvider* aProvider = nullptr)
: mBufferProvider(aProvider)
, mSnapshot(nullptr)
{}
~AutoReturnSnapshot()
{
if (mBufferProvider) {
mBufferProvider->ReturnSnapshot(mSnapshot ? mSnapshot->forget() : nullptr);
}
}
};
} // namespace layers