gfx/skia/trunk/src/gpu/gl/angle/SkANGLEGLContext.cpp@6474c204b198 (annotated)
gfx/skia/trunk/src/gpu/gl/angle/SkANGLEGLContext.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2012 Google Inc. |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "gl/SkANGLEGLContext.h" |
| michael@0 | 10 | |
| michael@0 | 11 | SkANGLEGLContext::AutoContextRestore::AutoContextRestore() { |
| michael@0 | 12 | fOldEGLContext = eglGetCurrentContext(); |
| michael@0 | 13 | fOldDisplay = eglGetCurrentDisplay(); |
| michael@0 | 14 | fOldSurface = eglGetCurrentSurface(EGL_DRAW); |
| michael@0 | 15 | |
| michael@0 | 16 | } |
| michael@0 | 17 | |
| michael@0 | 18 | SkANGLEGLContext::AutoContextRestore::~AutoContextRestore() { |
| michael@0 | 19 | if (NULL != fOldDisplay) { |
| michael@0 | 20 | eglMakeCurrent(fOldDisplay, fOldSurface, fOldSurface, fOldEGLContext); |
| michael@0 | 21 | } |
| michael@0 | 22 | } |
| michael@0 | 23 | |
| michael@0 | 24 | /////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 25 | |
| michael@0 | 26 | SkANGLEGLContext::SkANGLEGLContext() |
| michael@0 | 27 | : fContext(EGL_NO_CONTEXT) |
| michael@0 | 28 | , fDisplay(EGL_NO_DISPLAY) |
| michael@0 | 29 | , fSurface(EGL_NO_SURFACE) { |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | SkANGLEGLContext::~SkANGLEGLContext() { |
| michael@0 | 33 | this->destroyGLContext(); |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | void SkANGLEGLContext::destroyGLContext() { |
| michael@0 | 37 | if (fDisplay) { |
| michael@0 | 38 | eglMakeCurrent(fDisplay, 0, 0, 0); |
| michael@0 | 39 | |
| michael@0 | 40 | if (fContext) { |
| michael@0 | 41 | eglDestroyContext(fDisplay, fContext); |
| michael@0 | 42 | fContext = EGL_NO_CONTEXT; |
| michael@0 | 43 | } |
| michael@0 | 44 | |
| michael@0 | 45 | if (fSurface) { |
| michael@0 | 46 | eglDestroySurface(fDisplay, fSurface); |
| michael@0 | 47 | fSurface = EGL_NO_SURFACE; |
| michael@0 | 48 | } |
| michael@0 | 49 | |
| michael@0 | 50 | //TODO should we close the display? |
| michael@0 | 51 | fDisplay = EGL_NO_DISPLAY; |
| michael@0 | 52 | } |
| michael@0 | 53 | } |
| michael@0 | 54 | |
| michael@0 | 55 | const GrGLInterface* SkANGLEGLContext::createGLContext() { |
| michael@0 | 56 | |
| michael@0 | 57 | fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); |
| michael@0 | 58 | |
| michael@0 | 59 | EGLint majorVersion; |
| michael@0 | 60 | EGLint minorVersion; |
| michael@0 | 61 | eglInitialize(fDisplay, &majorVersion, &minorVersion); |
| michael@0 | 62 | |
| michael@0 | 63 | EGLint numConfigs; |
| michael@0 | 64 | static const EGLint configAttribs[] = { |
| michael@0 | 65 | EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, |
| michael@0 | 66 | EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, |
| michael@0 | 67 | EGL_RED_SIZE, 8, |
| michael@0 | 68 | EGL_GREEN_SIZE, 8, |
| michael@0 | 69 | EGL_BLUE_SIZE, 8, |
| michael@0 | 70 | EGL_ALPHA_SIZE, 8, |
| michael@0 | 71 | EGL_NONE |
| michael@0 | 72 | }; |
| michael@0 | 73 | |
| michael@0 | 74 | EGLConfig surfaceConfig; |
| michael@0 | 75 | eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs); |
| michael@0 | 76 | |
| michael@0 | 77 | static const EGLint contextAttribs[] = { |
| michael@0 | 78 | EGL_CONTEXT_CLIENT_VERSION, 2, |
| michael@0 | 79 | EGL_NONE |
| michael@0 | 80 | }; |
| michael@0 | 81 | fContext = eglCreateContext(fDisplay, surfaceConfig, NULL, contextAttribs); |
| michael@0 | 82 | |
| michael@0 | 83 | |
| michael@0 | 84 | static const EGLint surfaceAttribs[] = { |
| michael@0 | 85 | EGL_WIDTH, 1, |
| michael@0 | 86 | EGL_HEIGHT, 1, |
| michael@0 | 87 | EGL_NONE |
| michael@0 | 88 | }; |
| michael@0 | 89 | fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, surfaceAttribs); |
| michael@0 | 90 | |
| michael@0 | 91 | eglMakeCurrent(fDisplay, fSurface, fSurface, fContext); |
| michael@0 | 92 | |
| michael@0 | 93 | const GrGLInterface* interface = GrGLCreateANGLEInterface(); |
| michael@0 | 94 | if (NULL == interface) { |
| michael@0 | 95 | SkDebugf("Could not create ANGLE GL interface!\n"); |
| michael@0 | 96 | this->destroyGLContext(); |
| michael@0 | 97 | return NULL; |
| michael@0 | 98 | } |
| michael@0 | 99 | |
| michael@0 | 100 | return interface; |
| michael@0 | 101 | } |
| michael@0 | 102 | |
| michael@0 | 103 | void SkANGLEGLContext::makeCurrent() const { |
| michael@0 | 104 | if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) { |
| michael@0 | 105 | SkDebugf("Could not set the context.\n"); |
| michael@0 | 106 | } |
| michael@0 | 107 | } |
| michael@0 | 108 | |
| michael@0 | 109 | void SkANGLEGLContext::swapBuffers() const { |
| michael@0 | 110 | if (!eglSwapBuffers(fDisplay, fSurface)) { |
| michael@0 | 111 | SkDebugf("Could not complete eglSwapBuffers.\n"); |
| michael@0 | 112 | } |
| michael@0 | 113 | } |
