The Tor Browser: gfx/layers/opengl/MacIOSurfaceTextureHostOGL.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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_MACIOSURFACETEXTUREHOSTOGL_H

     7 #define MOZILLA_GFX_MACIOSURFACETEXTUREHOSTOGL_H

     9 #include "mozilla/layers/TextureHostOGL.h"

    11 class MacIOSurface;

    13 namespace mozilla {

    14 namespace layers {

    16 /**

    17  * A texture source meant for use with MacIOSurfaceTextureHostOGL.

    18  *

    19  * It does not own any GL texture, and attaches its shared handle to one of

    20  * the compositor's temporary textures when binding.

    21  */

    22 class MacIOSurfaceTextureSourceOGL : public NewTextureSource

    23                                    , public TextureSourceOGL

    24 {

    25 public:

    26   MacIOSurfaceTextureSourceOGL(CompositorOGL* aCompositor,

    27                                MacIOSurface* aSurface);

    28   virtual ~MacIOSurfaceTextureSourceOGL();

    30   virtual TextureSourceOGL* AsSourceOGL() { return this; }

    32   virtual void BindTexture(GLenum activetex, gfx::Filter aFilter) MOZ_OVERRIDE;

    34   virtual bool IsValid() const MOZ_OVERRIDE { return !!gl(); }

    36   virtual gfx::IntSize GetSize() const MOZ_OVERRIDE;

    38   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE;

    40   virtual GLenum GetTextureTarget() const { return LOCAL_GL_TEXTURE_RECTANGLE_ARB; }

    42   virtual GLenum GetWrapMode() const MOZ_OVERRIDE { return LOCAL_GL_CLAMP_TO_EDGE; }

    44   // MacIOSurfaceTextureSourceOGL doesn't own any gl texture

    45   virtual void DeallocateDeviceData() {}

    47   virtual void SetCompositor(Compositor* aCompositor) MOZ_OVERRIDE;

    49   gl::GLContext* gl() const;

    51 protected:

    52   CompositorOGL* mCompositor;

    53   RefPtr<MacIOSurface> mSurface;

    54 };

    56 /**

    57  * A TextureHost for shared MacIOSurface

    58  *

    59  * Most of the logic actually happens in MacIOSurfaceTextureSourceOGL.

    60  */

    61 class MacIOSurfaceTextureHostOGL : public TextureHost

    62 {

    63 public:

    64   MacIOSurfaceTextureHostOGL(TextureFlags aFlags,

    65                              const SurfaceDescriptorMacIOSurface& aDescriptor);

    67   // SharedTextureHostOGL doesn't own any GL texture

    68   virtual void DeallocateDeviceData() MOZ_OVERRIDE {}

    70   virtual void SetCompositor(Compositor* aCompositor) MOZ_OVERRIDE;

    72   virtual bool Lock() MOZ_OVERRIDE;

    74   virtual gfx::SurfaceFormat GetFormat() const MOZ_OVERRIDE;

    76   virtual NewTextureSource* GetTextureSources() MOZ_OVERRIDE

    77   {

    78     return mTextureSource;

    79   }

    81   virtual TemporaryRef<gfx::DataSourceSurface> GetAsSurface() MOZ_OVERRIDE

    82   {

    83     return nullptr; // XXX - implement this (for MOZ_DUMP_PAINTING)

    84   }

    86   gl::GLContext* gl() const;

    88   virtual gfx::IntSize GetSize() const MOZ_OVERRIDE;

    90 #ifdef MOZ_LAYERS_HAVE_LOG

    91   virtual const char* Name() { return "MacIOSurfaceTextureHostOGL"; }

    92 #endif

    94 protected:

    95   CompositorOGL* mCompositor;

    96   RefPtr<MacIOSurfaceTextureSourceOGL> mTextureSource;

    97   RefPtr<MacIOSurface> mSurface;

    98 };

   100 }

   101 }

   103 #endif // MOZILLA_GFX_MACIOSURFACETEXTUREHOSTOGL_H

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