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comparison: gfx/skia/trunk/src/gpu/gl/angle/SkANGLEGLContext.cpp
gfx/skia/trunk/src/gpu/gl/angle/SkANGLEGLContext.cpp
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| -1:000000000000 | 0:8e881463e5d2 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2012 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 #include "gl/SkANGLEGLContext.h" | |
| 10 | |
| 11 SkANGLEGLContext::AutoContextRestore::AutoContextRestore() { | |
| 12 fOldEGLContext = eglGetCurrentContext(); | |
| 13 fOldDisplay = eglGetCurrentDisplay(); | |
| 14 fOldSurface = eglGetCurrentSurface(EGL_DRAW); | |
| 15 | |
| 16 } | |
| 17 | |
| 18 SkANGLEGLContext::AutoContextRestore::~AutoContextRestore() { | |
| 19 if (NULL != fOldDisplay) { | |
| 20 eglMakeCurrent(fOldDisplay, fOldSurface, fOldSurface, fOldEGLContext); | |
| 21 } | |
| 22 } | |
| 23 | |
| 24 /////////////////////////////////////////////////////////////////////////////// | |
| 25 | |
| 26 SkANGLEGLContext::SkANGLEGLContext() | |
| 27 : fContext(EGL_NO_CONTEXT) | |
| 28 , fDisplay(EGL_NO_DISPLAY) | |
| 29 , fSurface(EGL_NO_SURFACE) { | |
| 30 } | |
| 31 | |
| 32 SkANGLEGLContext::~SkANGLEGLContext() { | |
| 33 this->destroyGLContext(); | |
| 34 } | |
| 35 | |
| 36 void SkANGLEGLContext::destroyGLContext() { | |
| 37 if (fDisplay) { | |
| 38 eglMakeCurrent(fDisplay, 0, 0, 0); | |
| 39 | |
| 40 if (fContext) { | |
| 41 eglDestroyContext(fDisplay, fContext); | |
| 42 fContext = EGL_NO_CONTEXT; | |
| 43 } | |
| 44 | |
| 45 if (fSurface) { | |
| 46 eglDestroySurface(fDisplay, fSurface); | |
| 47 fSurface = EGL_NO_SURFACE; | |
| 48 } | |
| 49 | |
| 50 //TODO should we close the display? | |
| 51 fDisplay = EGL_NO_DISPLAY; | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 const GrGLInterface* SkANGLEGLContext::createGLContext() { | |
| 56 | |
| 57 fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); | |
| 58 | |
| 59 EGLint majorVersion; | |
| 60 EGLint minorVersion; | |
| 61 eglInitialize(fDisplay, &majorVersion, &minorVersion); | |
| 62 | |
| 63 EGLint numConfigs; | |
| 64 static const EGLint configAttribs[] = { | |
| 65 EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, | |
| 66 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, | |
| 67 EGL_RED_SIZE, 8, | |
| 68 EGL_GREEN_SIZE, 8, | |
| 69 EGL_BLUE_SIZE, 8, | |
| 70 EGL_ALPHA_SIZE, 8, | |
| 71 EGL_NONE | |
| 72 }; | |
| 73 | |
| 74 EGLConfig surfaceConfig; | |
| 75 eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs); | |
| 76 | |
| 77 static const EGLint contextAttribs[] = { | |
| 78 EGL_CONTEXT_CLIENT_VERSION, 2, | |
| 79 EGL_NONE | |
| 80 }; | |
| 81 fContext = eglCreateContext(fDisplay, surfaceConfig, NULL, contextAttribs); | |
| 82 | |
| 83 | |
| 84 static const EGLint surfaceAttribs[] = { | |
| 85 EGL_WIDTH, 1, | |
| 86 EGL_HEIGHT, 1, | |
| 87 EGL_NONE | |
| 88 }; | |
| 89 fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, surfaceAttribs); | |
| 90 | |
| 91 eglMakeCurrent(fDisplay, fSurface, fSurface, fContext); | |
| 92 | |
| 93 const GrGLInterface* interface = GrGLCreateANGLEInterface(); | |
| 94 if (NULL == interface) { | |
| 95 SkDebugf("Could not create ANGLE GL interface!\n"); | |
| 96 this->destroyGLContext(); | |
| 97 return NULL; | |
| 98 } | |
| 99 | |
| 100 return interface; | |
| 101 } | |
| 102 | |
| 103 void SkANGLEGLContext::makeCurrent() const { | |
| 104 if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) { | |
| 105 SkDebugf("Could not set the context.\n"); | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 void SkANGLEGLContext::swapBuffers() const { | |
| 110 if (!eglSwapBuffers(fDisplay, fSurface)) { | |
| 111 SkDebugf("Could not complete eglSwapBuffers.\n"); | |
| 112 } | |
| 113 } |
