gfx/gl/GLReadTexImageHelper.h@97036ab72558 (annotated)
gfx/gl/GLReadTexImageHelper.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* vim: set ts=8 sts=4 et sw=4 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef GLREADTEXIMAGEHELPER_H_ |
| michael@0 | 8 | #define GLREADTEXIMAGEHELPER_H_ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "GLContextTypes.h" |
| michael@0 | 11 | #include "mozilla/Attributes.h" |
| michael@0 | 12 | #include "nsSize.h" |
| michael@0 | 13 | #include "nsAutoPtr.h" |
| michael@0 | 14 | #include "mozilla/RefPtr.h" |
| michael@0 | 15 | #include "mozilla/gfx/Types.h" |
| michael@0 | 16 | |
| michael@0 | 17 | class gfxImageSurface; |
| michael@0 | 18 | |
| michael@0 | 19 | namespace mozilla { |
| michael@0 | 20 | |
| michael@0 | 21 | namespace gfx { |
| michael@0 | 22 | class DataSourceSurface; |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | namespace gl { |
| michael@0 | 26 | |
| michael@0 | 27 | void ReadPixelsIntoImageSurface(GLContext* aGL, gfxImageSurface* aSurface); |
| michael@0 | 28 | void ReadScreenIntoImageSurface(GLContext* aGL, gfxImageSurface* aSurface); |
| michael@0 | 29 | |
| michael@0 | 30 | TemporaryRef<gfx::DataSourceSurface> |
| michael@0 | 31 | ReadBackSurface(GLContext* gl, GLuint aTexture, bool aYInvert, gfx::SurfaceFormat aFormat); |
| michael@0 | 32 | |
| michael@0 | 33 | class GLReadTexImageHelper MOZ_FINAL |
| michael@0 | 34 | { |
| michael@0 | 35 | // The GLContext is the sole owner of the GLBlitHelper. |
| michael@0 | 36 | GLContext* mGL; |
| michael@0 | 37 | |
| michael@0 | 38 | GLuint mPrograms[4]; |
| michael@0 | 39 | |
| michael@0 | 40 | GLuint TextureImageProgramFor(GLenum aTextureTarget, int aShader); |
| michael@0 | 41 | |
| michael@0 | 42 | bool DidGLErrorOccur(const char* str); |
| michael@0 | 43 | |
| michael@0 | 44 | public: |
| michael@0 | 45 | |
| michael@0 | 46 | GLReadTexImageHelper(GLContext* gl); |
| michael@0 | 47 | ~GLReadTexImageHelper(); |
| michael@0 | 48 | |
| michael@0 | 49 | /** |
| michael@0 | 50 | * Read the image data contained in aTexture, and return it as an ImageSurface. |
| michael@0 | 51 | * If GL_RGBA is given as the format, a gfxImageFormat::ARGB32 surface is returned. |
| michael@0 | 52 | * Not implemented yet: |
| michael@0 | 53 | * If GL_RGB is given as the format, a gfxImageFormat::RGB24 surface is returned. |
| michael@0 | 54 | * If GL_LUMINANCE is given as the format, a gfxImageFormat::A8 surface is returned. |
| michael@0 | 55 | * |
| michael@0 | 56 | * THIS IS EXPENSIVE. It is ridiculously expensive. Only do this |
| michael@0 | 57 | * if you absolutely positively must, and never in any performance |
| michael@0 | 58 | * critical path. |
| michael@0 | 59 | * |
| michael@0 | 60 | * NOTE: aShaderProgram is really mozilla::layers::ShaderProgramType. It is |
| michael@0 | 61 | * passed as int to eliminate including LayerManagerOGLProgram.h here. |
| michael@0 | 62 | */ |
| michael@0 | 63 | TemporaryRef<gfx::DataSourceSurface> ReadTexImage(GLuint aTextureId, |
| michael@0 | 64 | GLenum aTextureTarget, |
| michael@0 | 65 | const gfx::IntSize& aSize, |
| michael@0 | 66 | /* ShaderProgramType */ int aShaderProgram, |
| michael@0 | 67 | bool aYInvert = false); |
| michael@0 | 68 | |
| michael@0 | 69 | |
| michael@0 | 70 | }; |
| michael@0 | 71 | |
| michael@0 | 72 | } |
| michael@0 | 73 | } |
| michael@0 | 74 | |
| michael@0 | 75 | #endif |
