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comparison: gfx/gl/TextureImageCGL.mm
gfx/gl/TextureImageCGL.mm
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| 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 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 #include "TextureImageCGL.h" | |
| 7 #include "GLContext.h" | |
| 8 #include "gfx2DGlue.h" | |
| 9 #include "gfxQuartzSurface.h" | |
| 10 #include "gfxPlatform.h" | |
| 11 #include "gfxFailure.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 | |
| 15 using namespace gfx; | |
| 16 | |
| 17 namespace gl { | |
| 18 | |
| 19 TextureImageCGL::TextureImageCGL(GLuint aTexture, | |
| 20 const nsIntSize& aSize, | |
| 21 GLenum aWrapMode, | |
| 22 ContentType aContentType, | |
| 23 GLContext* aContext, | |
| 24 TextureImage::Flags aFlags, | |
| 25 TextureImage::ImageFormat aImageFormat) | |
| 26 : BasicTextureImage(aTexture, aSize, aWrapMode, aContentType, | |
| 27 aContext, aFlags, aImageFormat) | |
| 28 , mPixelBuffer(0) | |
| 29 , mPixelBufferSize(0) | |
| 30 , mBoundPixelBuffer(false) | |
| 31 {} | |
| 32 | |
| 33 TextureImageCGL::~TextureImageCGL() | |
| 34 { | |
| 35 if (mPixelBuffer) { | |
| 36 mGLContext->MakeCurrent(); | |
| 37 mGLContext->fDeleteBuffers(1, &mPixelBuffer); | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 already_AddRefed<gfxASurface> | |
| 42 TextureImageCGL::GetSurfaceForUpdate(const gfxIntSize& aSize, ImageFormat aFmt) | |
| 43 { | |
| 44 IntSize size(aSize.width + 1, aSize.height + 1); | |
| 45 mGLContext->MakeCurrent(); | |
| 46 if (!mGLContext-> | |
| 47 IsExtensionSupported(GLContext::ARB_pixel_buffer_object)) | |
| 48 { | |
| 49 return gfxPlatform::GetPlatform()-> | |
| 50 CreateOffscreenSurface(size, | |
| 51 gfxASurface::ContentFromFormat(aFmt)); | |
| 52 } | |
| 53 | |
| 54 if (!mPixelBuffer) { | |
| 55 mGLContext->fGenBuffers(1, &mPixelBuffer); | |
| 56 } | |
| 57 mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, mPixelBuffer); | |
| 58 int32_t length = size.width * 4 * size.height; | |
| 59 | |
| 60 if (length > mPixelBufferSize) { | |
| 61 mGLContext->fBufferData(LOCAL_GL_PIXEL_UNPACK_BUFFER, length, | |
| 62 NULL, LOCAL_GL_STREAM_DRAW); | |
| 63 mPixelBufferSize = length; | |
| 64 } | |
| 65 unsigned char* data = | |
| 66 (unsigned char*)mGLContext-> | |
| 67 fMapBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, | |
| 68 LOCAL_GL_WRITE_ONLY); | |
| 69 | |
| 70 mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0); | |
| 71 | |
| 72 if (!data) { | |
| 73 nsAutoCString failure; | |
| 74 failure += "Pixel buffer binding failed: "; | |
| 75 failure.AppendPrintf("%dx%d\n", size.width, size.height); | |
| 76 gfx::LogFailure(failure); | |
| 77 | |
| 78 mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0); | |
| 79 return gfxPlatform::GetPlatform()-> | |
| 80 CreateOffscreenSurface(size, | |
| 81 gfxASurface::ContentFromFormat(aFmt)); | |
| 82 } | |
| 83 | |
| 84 nsRefPtr<gfxQuartzSurface> surf = | |
| 85 new gfxQuartzSurface(data, ThebesIntSize(size), size.width * 4, aFmt); | |
| 86 | |
| 87 mBoundPixelBuffer = true; | |
| 88 return surf.forget(); | |
| 89 } | |
| 90 | |
| 91 bool | |
| 92 TextureImageCGL::FinishedSurfaceUpdate() | |
| 93 { | |
| 94 if (mBoundPixelBuffer) { | |
| 95 mGLContext->MakeCurrent(); | |
| 96 mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, mPixelBuffer); | |
| 97 mGLContext->fUnmapBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER); | |
| 98 return true; | |
| 99 } | |
| 100 return false; | |
| 101 } | |
| 102 | |
| 103 void | |
| 104 TextureImageCGL::FinishedSurfaceUpload() | |
| 105 { | |
| 106 if (mBoundPixelBuffer) { | |
| 107 mGLContext->MakeCurrent(); | |
| 108 mGLContext->fBindBuffer(LOCAL_GL_PIXEL_UNPACK_BUFFER, 0); | |
| 109 mBoundPixelBuffer = false; | |
| 110 } | |
| 111 } | |
| 112 | |
| 113 already_AddRefed<TextureImage> | |
| 114 CreateTextureImageCGL(GLContext* gl, | |
| 115 const gfx::IntSize& aSize, | |
| 116 TextureImage::ContentType aContentType, | |
| 117 GLenum aWrapMode, | |
| 118 TextureImage::Flags aFlags, | |
| 119 TextureImage::ImageFormat aImageFormat) | |
| 120 { | |
| 121 if (!gl->IsOffscreenSizeAllowed(aSize) && | |
| 122 gfxPlatform::OffMainThreadCompositingEnabled()) { | |
| 123 NS_ASSERTION(aWrapMode == LOCAL_GL_CLAMP_TO_EDGE, "Can't support wrapping with tiles!"); | |
| 124 nsRefPtr<TextureImage> t = new gl::TiledTextureImage(gl, aSize, aContentType, | |
| 125 aFlags, aImageFormat); | |
| 126 return t.forget(); | |
| 127 } | |
| 128 | |
| 129 return CreateBasicTextureImage(gl, aSize, aContentType, aWrapMode, | |
| 130 aFlags, aImageFormat); | |
| 131 } | |
| 132 | |
| 133 already_AddRefed<TextureImage> | |
| 134 TileGenFuncCGL(GLContext *gl, | |
| 135 const nsIntSize& aSize, | |
| 136 TextureImage::ContentType aContentType, | |
| 137 TextureImage::Flags aFlags, | |
| 138 TextureImage::ImageFormat aImageFormat) | |
| 139 { | |
| 140 bool useNearestFilter = aFlags & TextureImage::UseNearestFilter; | |
| 141 gl->MakeCurrent(); | |
| 142 | |
| 143 GLuint texture; | |
| 144 gl->fGenTextures(1, &texture); | |
| 145 | |
| 146 gl->fActiveTexture(LOCAL_GL_TEXTURE0); | |
| 147 gl->fBindTexture(LOCAL_GL_TEXTURE_2D, texture); | |
| 148 | |
| 149 GLint texfilter = useNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR; | |
| 150 gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter); | |
| 151 gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter); | |
| 152 gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE); | |
| 153 gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE); | |
| 154 | |
| 155 nsRefPtr<TextureImageCGL> teximage | |
| 156 (new TextureImageCGL(texture, aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType, | |
| 157 gl, aFlags, aImageFormat)); | |
| 158 return teximage.forget(); | |
| 159 } | |
| 160 | |
| 161 } | |
| 162 } |
