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86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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// * This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_TEXTURECLIENTOGL_H
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#define MOZILLA_GFX_TEXTURECLIENTOGL_H
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#include "GLContextTypes.h" // for SharedTextureHandle, etc
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#include "gfxTypes.h"
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#include "mozilla/Attributes.h" // for MOZ_OVERRIDE
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/layers/CompositorTypes.h"
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#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor
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#include "mozilla/layers/TextureClient.h" // for TextureClient, etc
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namespace mozilla {
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namespace gl {
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class SurfaceStream;
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}
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}
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namespace mozilla {
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namespace layers {
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class CompositableForwarder;
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/**
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* A TextureClient implementation to share TextureMemory that is already
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* on the GPU, for the OpenGL backend.
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*/
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class SharedTextureClientOGL : public TextureClient
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{
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public:
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explicit SharedTextureClientOGL(TextureFlags aFlags);
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~SharedTextureClientOGL();
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virtual bool IsAllocated() const MOZ_OVERRIDE;
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virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;
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virtual bool Lock(OpenMode mode) MOZ_OVERRIDE;
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virtual void Unlock() MOZ_OVERRIDE;
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virtual bool IsLocked() const MOZ_OVERRIDE { return mIsLocked; }
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virtual bool HasInternalBuffer() const MOZ_OVERRIDE { return false; }
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void InitWith(gl::SharedTextureHandle aHandle,
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gfx::IntSize aSize,
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gl::SharedTextureShareType aShareType,
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bool aInverted = false);
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virtual gfx::IntSize GetSize() const { return mSize; }
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virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE
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{
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return gfx::SurfaceFormat::UNKNOWN;
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}
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// This TextureClient should not be used in a context where we use CreateSimilar
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// (ex. component alpha) because the underlying texture data is always created by
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// an external producer.
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virtual TemporaryRef<TextureClient>
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CreateSimilar(TextureFlags, TextureAllocationFlags) const MOZ_OVERRIDE { return nullptr; }
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virtual bool AllocateForSurface(gfx::IntSize aSize, TextureAllocationFlags aFlags) MOZ_OVERRIDE
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{
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return false;
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}
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protected:
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gl::SharedTextureHandle mHandle;
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gfx::IntSize mSize;
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gl::SharedTextureShareType mShareType;
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bool mInverted;
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bool mIsLocked;
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};
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} // namespace
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} // namespace
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#endif
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