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comparison: gfx/gl/GLUploadHelpers.h
gfx/gl/GLUploadHelpers.h
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- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:3ab075d2132f |
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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 #ifndef GLUploadHelpers_h_ | |
| 7 #define GLUploadHelpers_h_ | |
| 8 | |
| 9 #include "GLDefs.h" | |
| 10 #include "mozilla/gfx/Types.h" | |
| 11 #include "nsPoint.h" | |
| 12 | |
| 13 class nsIntRegion; | |
| 14 | |
| 15 namespace mozilla { | |
| 16 | |
| 17 namespace gfx { | |
| 18 class DataSourceSurface; | |
| 19 } | |
| 20 | |
| 21 namespace gl { | |
| 22 | |
| 23 class GLContext; | |
| 24 | |
| 25 /** | |
| 26 * Creates a RGB/RGBA texture (or uses one provided) and uploads the surface | |
| 27 * contents to it within aSrcRect. | |
| 28 * | |
| 29 * aSrcRect.x/y will be uploaded to 0/0 in the texture, and the size | |
| 30 * of the texture with be aSrcRect.width/height. | |
| 31 * | |
| 32 * If an existing texture is passed through aTexture, it is assumed it | |
| 33 * has already been initialised with glTexImage2D (or this function), | |
| 34 * and that its size is equal to or greater than aSrcRect + aDstPoint. | |
| 35 * You can alternatively set the overwrite flag to true and have a new | |
| 36 * texture memory block allocated. | |
| 37 * | |
| 38 * The aDstPoint parameter is ignored if no texture was provided | |
| 39 * or aOverwrite is true. | |
| 40 * | |
| 41 * \param aData Image data to upload. | |
| 42 * \param aDstRegion Region of texture to upload to. | |
| 43 * \param aTexture Texture to use, or 0 to have one created for you. | |
| 44 * \param aOverwrite Over an existing texture with a new one. | |
| 45 * \param aSrcPoint Offset into aSrc where the region's bound's | |
| 46 * TopLeft() sits. | |
| 47 * \param aPixelBuffer Pass true to upload texture data with an | |
| 48 * offset from the base data (generally for pixel buffer objects), | |
| 49 * otherwise textures are upload with an absolute pointer to the data. | |
| 50 * \param aTextureUnit, the texture unit used temporarily to upload the | |
| 51 * surface. This testure may be overridden, clients should not rely on | |
| 52 * the contents of this texture after this call or even on this | |
| 53 * texture unit being active. | |
| 54 * \return Surface format of this texture. | |
| 55 */ | |
| 56 gfx::SurfaceFormat | |
| 57 UploadImageDataToTexture(GLContext* gl, | |
| 58 unsigned char* aData, | |
| 59 int32_t aStride, | |
| 60 gfx::SurfaceFormat aFormat, | |
| 61 const nsIntRegion& aDstRegion, | |
| 62 GLuint& aTexture, | |
| 63 bool aOverwrite = false, | |
| 64 bool aPixelBuffer = false, | |
| 65 GLenum aTextureUnit = LOCAL_GL_TEXTURE0, | |
| 66 GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D); | |
| 67 | |
| 68 /** | |
| 69 * Convenience wrapper around UploadImageDataToTexture for gfx::DataSourceSurface's. | |
| 70 */ | |
| 71 gfx::SurfaceFormat | |
| 72 UploadSurfaceToTexture(GLContext* gl, | |
| 73 gfx::DataSourceSurface *aSurface, | |
| 74 const nsIntRegion& aDstRegion, | |
| 75 GLuint& aTexture, | |
| 76 bool aOverwrite = false, | |
| 77 const nsIntPoint& aSrcPoint = nsIntPoint(0, 0), | |
| 78 bool aPixelBuffer = false, | |
| 79 GLenum aTextureUnit = LOCAL_GL_TEXTURE0, | |
| 80 GLenum aTextureTarget = LOCAL_GL_TEXTURE_2D); | |
| 81 | |
| 82 bool CanUploadSubTextures(GLContext* gl); | |
| 83 bool CanUploadNonPowerOfTwo(GLContext* gl); | |
| 84 | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 #endif |
