The Tor Browser: gfx/layers/opengl/TextureClientOGL.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2 //  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef MOZILLA_GFX_TEXTURECLIENTOGL_H

     7 #define MOZILLA_GFX_TEXTURECLIENTOGL_H

     9 #include "GLContextTypes.h"             // for SharedTextureHandle, etc

    10 #include "gfxTypes.h"

    11 #include "mozilla/Attributes.h"         // for MOZ_OVERRIDE

    12 #include "mozilla/gfx/Point.h"          // for IntSize

    13 #include "mozilla/layers/CompositorTypes.h"

    14 #include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor

    15 #include "mozilla/layers/TextureClient.h"  // for TextureClient, etc

    17 namespace mozilla {

    18 namespace gfx {

    19 class SurfaceStream;

    20 }

    21 }

    23 namespace mozilla {

    24 namespace layers {

    26 class CompositableForwarder;

    28 /**

    29  * A TextureClient implementation to share TextureMemory that is already

    30  * on the GPU, for the OpenGL backend.

    31  */

    32 class SharedTextureClientOGL : public TextureClient

    33 {

    34 public:

    35   SharedTextureClientOGL(TextureFlags aFlags);

    37   ~SharedTextureClientOGL();

    39   virtual bool IsAllocated() const MOZ_OVERRIDE;

    41   virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;

    43   virtual bool Lock(OpenMode mode) MOZ_OVERRIDE;

    45   virtual void Unlock() MOZ_OVERRIDE;

    47   virtual bool IsLocked() const MOZ_OVERRIDE { return mIsLocked; }

    49   virtual bool HasInternalBuffer() const MOZ_OVERRIDE { return false; }

    51   void InitWith(gl::SharedTextureHandle aHandle,

    52                 gfx::IntSize aSize,

    53                 gl::SharedTextureShareType aShareType,

    54                 bool aInverted = false);

    56   virtual gfx::IntSize GetSize() const { return mSize; }

    58   virtual TextureClientData* DropTextureData() MOZ_OVERRIDE

    59   {

    60     // XXX - right now the code paths using this are managing the shared texture

    61     // data, although they should use a TextureClientData for this to ensure that

    62     // the destruction sequence is race-free.

    63     MarkInvalid();

    64     return nullptr;

    65   }

    67   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE

    68   {

    69     return gfx::SurfaceFormat::UNKNOWN;

    70   }

    72   virtual bool AllocateForSurface(gfx::IntSize aSize, TextureAllocationFlags aFlags) MOZ_OVERRIDE

    73   {

    74     return false;

    75   }

    77 protected:

    78   gl::SharedTextureHandle mHandle;

    79   gfx::IntSize mSize;

    80   gl::SharedTextureShareType mShareType;

    81   bool mInverted;

    82   bool mIsLocked;

    83 };

    85 /**

    86  * A TextureClient implementation to share SurfaceStream.

    87  */

    88 class StreamTextureClientOGL : public TextureClient

    89 {

    90 public:

    91   StreamTextureClientOGL(TextureFlags aFlags);

    93   ~StreamTextureClientOGL();

    95   virtual bool IsAllocated() const MOZ_OVERRIDE;

    97   virtual bool Lock(OpenMode mode) MOZ_OVERRIDE;

    99   virtual void Unlock() MOZ_OVERRIDE;

   101   virtual bool IsLocked() const MOZ_OVERRIDE { return mIsLocked; }

   103   virtual bool ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor) MOZ_OVERRIDE;

   105   virtual TextureClientData* DropTextureData() MOZ_OVERRIDE { return nullptr; }

   107   virtual bool HasInternalBuffer() const MOZ_OVERRIDE { return false; }

   109   void InitWith(gfx::SurfaceStream* aStream);

   111   virtual gfx::IntSize GetSize() const { return gfx::IntSize(); }

   113   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE

   114   {

   115     return gfx::SurfaceFormat::UNKNOWN;

   116   }

   118   virtual bool AllocateForSurface(gfx::IntSize aSize, TextureAllocationFlags aFlags) MOZ_OVERRIDE

   119   {

   120     return false;

   121   }

   123 protected:

   124   bool mIsLocked;

   125   RefPtr<gfx::SurfaceStream> mStream;

   126   RefPtr<gl::GLContext> mGL;

   127 };

   129 } // namespace

   130 } // namespace

   132 #endif

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