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comparison: gfx/gl/GLBlitHelper.h
gfx/gl/GLBlitHelper.h
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| -1:000000000000 | 0:7891fbb41a6d |
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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 GLBLITHELPER_H_ | |
| 8 #define GLBLITHELPER_H_ | |
| 9 | |
| 10 #include "GLContextTypes.h" | |
| 11 #include "GLConsts.h" | |
| 12 #include "nsSize.h" | |
| 13 #include "mozilla/Attributes.h" | |
| 14 #include "mozilla/gfx/Point.h" | |
| 15 | |
| 16 namespace mozilla { | |
| 17 namespace gl { | |
| 18 | |
| 19 class GLContext; | |
| 20 | |
| 21 /** | |
| 22 * Helper function that creates a 2D texture aSize.width x aSize.height with | |
| 23 * storage type specified by aFormats. Returns GL texture object id. | |
| 24 * | |
| 25 * See mozilla::gl::CreateTexture. | |
| 26 */ | |
| 27 GLuint CreateTextureForOffscreen(GLContext* aGL, const GLFormats& aFormats, | |
| 28 const gfx::IntSize& aSize); | |
| 29 | |
| 30 /** | |
| 31 * Helper function that creates a 2D texture aSize.width x aSize.height with | |
| 32 * storage type aInternalFormat. Returns GL texture object id. | |
| 33 * | |
| 34 * Initialize textyre parameters to: | |
| 35 * GL_TEXTURE_MIN_FILTER = GL_LINEAR | |
| 36 * GL_TEXTURE_MAG_FILTER = GL_LINEAR | |
| 37 * GL_TEXTURE_WRAP_S = GL_CLAMP_TO_EDGE | |
| 38 * GL_TEXTURE_WRAP_T = GL_CLAMP_TO_EDGE | |
| 39 */ | |
| 40 GLuint CreateTexture(GLContext* aGL, GLenum aInternalFormat, GLenum aFormat, | |
| 41 GLenum aType, const gfx::IntSize& aSize); | |
| 42 | |
| 43 /** | |
| 44 * Helper function to create, potentially, multisample render buffers suitable | |
| 45 * for offscreen rendering. Buffers of size aSize.width x aSize.height with | |
| 46 * storage specified by aFormat. returns GL render buffer object id. | |
| 47 */ | |
| 48 GLuint CreateRenderbuffer(GLContext* aGL, GLenum aFormat, GLsizei aSamples, | |
| 49 const gfx::IntSize& aSize); | |
| 50 | |
| 51 /** | |
| 52 * Helper function to create, potentially, multisample render buffers suitable | |
| 53 * for offscreen rendering. Buffers of size aSize.width x aSize.height with | |
| 54 * storage specified by aFormats. GL render buffer object ids are returned via | |
| 55 * aColorMSRB, aDepthRB, and aStencilRB | |
| 56 */ | |
| 57 void CreateRenderbuffersForOffscreen(GLContext* aGL, const GLFormats& aFormats, | |
| 58 const gfx::IntSize& aSize, bool aMultisample, | |
| 59 GLuint* aColorMSRB, GLuint* aDepthRB, | |
| 60 GLuint* aStencilRB); | |
| 61 | |
| 62 | |
| 63 /** Buffer blitting helper */ | |
| 64 class GLBlitHelper MOZ_FINAL | |
| 65 { | |
| 66 // The GLContext is the sole owner of the GLBlitHelper. | |
| 67 GLContext* mGL; | |
| 68 | |
| 69 GLuint mTexBlit_Buffer; | |
| 70 GLuint mTexBlit_VertShader; | |
| 71 GLuint mTex2DBlit_FragShader; | |
| 72 GLuint mTex2DRectBlit_FragShader; | |
| 73 GLuint mTex2DBlit_Program; | |
| 74 GLuint mTex2DRectBlit_Program; | |
| 75 | |
| 76 void UseBlitProgram(); | |
| 77 void SetBlitFramebufferForDestTexture(GLuint aTexture); | |
| 78 | |
| 79 bool UseTexQuadProgram(GLenum target, const gfx::IntSize& srcSize); | |
| 80 bool InitTexQuadProgram(GLenum target = LOCAL_GL_TEXTURE_2D); | |
| 81 void DeleteTexBlitProgram(); | |
| 82 | |
| 83 public: | |
| 84 | |
| 85 GLBlitHelper(GLContext* gl); | |
| 86 ~GLBlitHelper(); | |
| 87 | |
| 88 // If you don't have |srcFormats| for the 2nd definition, | |
| 89 // then you'll need the framebuffer_blit extensions to use | |
| 90 // the first BlitFramebufferToFramebuffer. | |
| 91 void BlitFramebufferToFramebuffer(GLuint srcFB, GLuint destFB, | |
| 92 const gfx::IntSize& srcSize, | |
| 93 const gfx::IntSize& destSize); | |
| 94 void BlitFramebufferToFramebuffer(GLuint srcFB, GLuint destFB, | |
| 95 const gfx::IntSize& srcSize, | |
| 96 const gfx::IntSize& destSize, | |
| 97 const GLFormats& srcFormats); | |
| 98 void BlitTextureToFramebuffer(GLuint srcTex, GLuint destFB, | |
| 99 const gfx::IntSize& srcSize, | |
| 100 const gfx::IntSize& destSize, | |
| 101 GLenum srcTarget = LOCAL_GL_TEXTURE_2D); | |
| 102 void BlitFramebufferToTexture(GLuint srcFB, GLuint destTex, | |
| 103 const gfx::IntSize& srcSize, | |
| 104 const gfx::IntSize& destSize, | |
| 105 GLenum destTarget = LOCAL_GL_TEXTURE_2D); | |
| 106 void BlitTextureToTexture(GLuint srcTex, GLuint destTex, | |
| 107 const gfx::IntSize& srcSize, | |
| 108 const gfx::IntSize& destSize, | |
| 109 GLenum srcTarget = LOCAL_GL_TEXTURE_2D, | |
| 110 GLenum destTarget = LOCAL_GL_TEXTURE_2D); | |
| 111 }; | |
| 112 | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 #endif // GLBLITHELPER_H_ |
