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comparison: gfx/gl/GLReadTexImageHelper.h
gfx/gl/GLReadTexImageHelper.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:8d96d4e9e395 |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim: set ts=8 sts=4 et sw=4 tw=80: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef GLREADTEXIMAGEHELPER_H_ | |
| 8 #define GLREADTEXIMAGEHELPER_H_ | |
| 9 | |
| 10 #include "GLContextTypes.h" | |
| 11 #include "mozilla/Attributes.h" | |
| 12 #include "nsSize.h" | |
| 13 #include "nsAutoPtr.h" | |
| 14 #include "mozilla/RefPtr.h" | |
| 15 #include "mozilla/gfx/Types.h" | |
| 16 | |
| 17 class gfxImageSurface; | |
| 18 | |
| 19 namespace mozilla { | |
| 20 | |
| 21 namespace gfx { | |
| 22 class DataSourceSurface; | |
| 23 } | |
| 24 | |
| 25 namespace gl { | |
| 26 | |
| 27 void ReadPixelsIntoImageSurface(GLContext* aGL, gfxImageSurface* aSurface); | |
| 28 void ReadScreenIntoImageSurface(GLContext* aGL, gfxImageSurface* aSurface); | |
| 29 | |
| 30 TemporaryRef<gfx::DataSourceSurface> | |
| 31 ReadBackSurface(GLContext* gl, GLuint aTexture, bool aYInvert, gfx::SurfaceFormat aFormat); | |
| 32 | |
| 33 class GLReadTexImageHelper MOZ_FINAL | |
| 34 { | |
| 35 // The GLContext is the sole owner of the GLBlitHelper. | |
| 36 GLContext* mGL; | |
| 37 | |
| 38 GLuint mPrograms[4]; | |
| 39 | |
| 40 GLuint TextureImageProgramFor(GLenum aTextureTarget, int aShader); | |
| 41 | |
| 42 bool DidGLErrorOccur(const char* str); | |
| 43 | |
| 44 public: | |
| 45 | |
| 46 GLReadTexImageHelper(GLContext* gl); | |
| 47 ~GLReadTexImageHelper(); | |
| 48 | |
| 49 /** | |
| 50 * Read the image data contained in aTexture, and return it as an ImageSurface. | |
| 51 * If GL_RGBA is given as the format, a gfxImageFormat::ARGB32 surface is returned. | |
| 52 * Not implemented yet: | |
| 53 * If GL_RGB is given as the format, a gfxImageFormat::RGB24 surface is returned. | |
| 54 * If GL_LUMINANCE is given as the format, a gfxImageFormat::A8 surface is returned. | |
| 55 * | |
| 56 * THIS IS EXPENSIVE. It is ridiculously expensive. Only do this | |
| 57 * if you absolutely positively must, and never in any performance | |
| 58 * critical path. | |
| 59 * | |
| 60 * NOTE: aShaderProgram is really mozilla::layers::ShaderProgramType. It is | |
| 61 * passed as int to eliminate including LayerManagerOGLProgram.h here. | |
| 62 */ | |
| 63 TemporaryRef<gfx::DataSourceSurface> ReadTexImage(GLuint aTextureId, | |
| 64 GLenum aTextureTarget, | |
| 65 const gfx::IntSize& aSize, | |
| 66 /* ShaderProgramType */ int aShaderProgram, | |
| 67 bool aYInvert = false); | |
| 68 | |
| 69 | |
| 70 }; | |
| 71 | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 #endif |
