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comparison: gfx/gl/SharedSurface.h
gfx/gl/SharedSurface.h
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| 1 /* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */ | |
| 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/. */ | |
| 5 | |
| 6 /* SharedSurface abstracts an actual surface (can be a GL texture, but | |
| 7 * not necessarily) that handles sharing. | |
| 8 * Its specializations are: | |
| 9 * SharedSurface_Basic (client-side bitmap, does readback) | |
| 10 * SharedSurface_GLTexture | |
| 11 * SharedSurface_EGLImage | |
| 12 * SharedSurface_ANGLEShareHandle | |
| 13 */ | |
| 14 | |
| 15 #ifndef SHARED_SURFACE_H_ | |
| 16 #define SHARED_SURFACE_H_ | |
| 17 | |
| 18 #include <stdint.h> | |
| 19 #include "mozilla/Attributes.h" | |
| 20 #include "GLDefs.h" | |
| 21 #include "mozilla/gfx/Point.h" | |
| 22 #include "SurfaceTypes.h" | |
| 23 | |
| 24 namespace mozilla { | |
| 25 namespace gfx { | |
| 26 | |
| 27 class SurfaceFactory; | |
| 28 | |
| 29 class SharedSurface | |
| 30 { | |
| 31 protected: | |
| 32 const SharedSurfaceType mType; | |
| 33 const APITypeT mAPI; | |
| 34 const AttachmentType mAttachType; | |
| 35 const gfx::IntSize mSize; | |
| 36 const bool mHasAlpha; | |
| 37 bool mIsLocked; | |
| 38 | |
| 39 SharedSurface(SharedSurfaceType type, | |
| 40 APITypeT api, | |
| 41 AttachmentType attachType, | |
| 42 const gfx::IntSize& size, | |
| 43 bool hasAlpha) | |
| 44 : mType(type) | |
| 45 , mAPI(api) | |
| 46 , mAttachType(attachType) | |
| 47 , mSize(size) | |
| 48 , mHasAlpha(hasAlpha) | |
| 49 , mIsLocked(false) | |
| 50 { | |
| 51 } | |
| 52 | |
| 53 public: | |
| 54 virtual ~SharedSurface() { | |
| 55 } | |
| 56 | |
| 57 static void Copy(SharedSurface* src, SharedSurface* dest, | |
| 58 SurfaceFactory* factory); | |
| 59 | |
| 60 // This locks the SharedSurface as the production buffer for the context. | |
| 61 // This is needed by backends which use PBuffers and/or EGLSurfaces. | |
| 62 virtual void LockProd() { | |
| 63 MOZ_ASSERT(!mIsLocked); | |
| 64 LockProdImpl(); | |
| 65 mIsLocked = true; | |
| 66 } | |
| 67 | |
| 68 // Unlocking is harmless if we're already unlocked. | |
| 69 virtual void UnlockProd() { | |
| 70 if (!mIsLocked) | |
| 71 return; | |
| 72 | |
| 73 UnlockProdImpl(); | |
| 74 mIsLocked = false; | |
| 75 } | |
| 76 | |
| 77 virtual void LockProdImpl() = 0; | |
| 78 virtual void UnlockProdImpl() = 0; | |
| 79 | |
| 80 virtual void Fence() = 0; | |
| 81 virtual bool WaitSync() = 0; | |
| 82 | |
| 83 | |
| 84 SharedSurfaceType Type() const { | |
| 85 return mType; | |
| 86 } | |
| 87 | |
| 88 APITypeT APIType() const { | |
| 89 return mAPI; | |
| 90 } | |
| 91 | |
| 92 AttachmentType AttachType() const { | |
| 93 return mAttachType; | |
| 94 } | |
| 95 | |
| 96 const gfx::IntSize& Size() const { | |
| 97 return mSize; | |
| 98 } | |
| 99 | |
| 100 bool HasAlpha() const { | |
| 101 return mHasAlpha; | |
| 102 } | |
| 103 }; | |
| 104 | |
| 105 } /* namespace gfx */ | |
| 106 } /* namespace mozilla */ | |
| 107 | |
| 108 #endif /* SHARED_SURFACE_H_ */ |
