gfx/skia/trunk/src/gpu/gl/android/SkNativeGLContext_android.cpp@deefc01c0e14
gfx/skia/trunk/src/gpu/gl/android/SkNativeGLContext_android.cpp
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
2 /*
3 * Copyright 2011 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 #include "gl/SkNativeGLContext.h"
10 SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
11 fOldEGLContext = eglGetCurrentContext();
12 fOldDisplay = eglGetCurrentDisplay();
13 fOldSurface = eglGetCurrentSurface(EGL_DRAW);
15 }
17 SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
18 if (NULL != fOldDisplay) {
19 eglMakeCurrent(fOldDisplay, fOldSurface, fOldSurface, fOldEGLContext);
20 }
21 }
23 ///////////////////////////////////////////////////////////////////////////////
25 SkNativeGLContext::SkNativeGLContext()
26 : fContext(EGL_NO_CONTEXT)
27 , fDisplay(EGL_NO_DISPLAY)
28 , fSurface(EGL_NO_SURFACE) {
29 }
31 SkNativeGLContext::~SkNativeGLContext() {
32 this->destroyGLContext();
33 }
35 void SkNativeGLContext::destroyGLContext() {
36 if (fDisplay) {
37 eglMakeCurrent(fDisplay, 0, 0, 0);
39 if (fContext) {
40 eglDestroyContext(fDisplay, fContext);
41 fContext = EGL_NO_CONTEXT;
42 }
44 if (fSurface) {
45 eglDestroySurface(fDisplay, fSurface);
46 fSurface = EGL_NO_SURFACE;
47 }
49 //TODO should we close the display?
50 fDisplay = EGL_NO_DISPLAY;
51 }
52 }
54 const GrGLInterface* SkNativeGLContext::createGLContext() {
55 static const EGLint kEGLContextAttribsForOpenGL[] = {
56 EGL_NONE
57 };
59 static const EGLint kEGLContextAttribsForOpenGLES[] = {
60 EGL_CONTEXT_CLIENT_VERSION, 2,
61 EGL_NONE
62 };
64 static const struct {
65 const EGLint* fContextAttribs;
66 EGLenum fAPI;
67 EGLint fRenderableTypeBit;
68 GrGLStandard fStandard;
69 } kAPIs[] = {
70 { // OpenGL
71 kEGLContextAttribsForOpenGL,
72 EGL_OPENGL_API,
73 EGL_OPENGL_BIT,
74 kGL_GrGLStandard
75 },
76 { // OpenGL ES. This seems to work for both ES2 and 3 (when available).
77 kEGLContextAttribsForOpenGLES,
78 EGL_OPENGL_ES_API,
79 EGL_OPENGL_ES2_BIT,
80 kGLES_GrGLStandard
81 },
82 };
84 const GrGLInterface* interface = NULL;
86 for (size_t api = 0; NULL == interface && api < SK_ARRAY_COUNT(kAPIs); ++api) {
87 fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
89 EGLint majorVersion;
90 EGLint minorVersion;
91 eglInitialize(fDisplay, &majorVersion, &minorVersion);
93 #if 0
94 SkDebugf("VENDOR: %s\n", eglQueryString(fDisplay, EGL_VENDOR));
95 SkDebugf("APIS: %s\n", eglQueryString(fDisplay, EGL_CLIENT_APIS));
96 SkDebugf("VERSION: %s\n", eglQueryString(fDisplay, EGL_VERSION));
97 SkDebugf("EXTENSIONS %s\n", eglQueryString(fDisplay, EGL_EXTENSIONS));
98 #endif
100 if (!eglBindAPI(kAPIs[api].fAPI)) {
101 continue;
102 }
104 EGLint numConfigs;
105 const EGLint configAttribs[] = {
106 EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
107 EGL_RENDERABLE_TYPE, kAPIs[api].fRenderableTypeBit,
108 EGL_RED_SIZE, 8,
109 EGL_GREEN_SIZE, 8,
110 EGL_BLUE_SIZE, 8,
111 EGL_ALPHA_SIZE, 8,
112 EGL_NONE
113 };
115 EGLConfig surfaceConfig;
116 if (!eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs)) {
117 SkDebugf("eglChooseConfig failed. EGL Error: 0x%08x\n", eglGetError());
118 continue;
119 }
121 fContext = eglCreateContext(fDisplay, surfaceConfig, NULL, kAPIs[api].fContextAttribs);
122 if (EGL_NO_CONTEXT == fContext) {
123 SkDebugf("eglCreateContext failed. EGL Error: 0x%08x\n", eglGetError());
124 continue;
125 }
127 static const EGLint kSurfaceAttribs[] = {
128 EGL_WIDTH, 1,
129 EGL_HEIGHT, 1,
130 EGL_NONE
131 };
133 fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, kSurfaceAttribs);
134 if (EGL_NO_SURFACE == fSurface) {
135 SkDebugf("eglCreatePbufferSurface failed. EGL Error: 0x%08x\n", eglGetError());
136 this->destroyGLContext();
137 continue;
138 }
140 if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
141 SkDebugf("eglMakeCurrent failed. EGL Error: 0x%08x\n", eglGetError());
142 this->destroyGLContext();
143 continue;
144 }
146 interface = GrGLCreateNativeInterface();
147 if (NULL == interface) {
148 SkDebugf("Failed to create gl interface.\n");
149 this->destroyGLContext();
150 continue;
151 }
153 if (!interface->validate()) {
154 interface->unref();
155 interface = NULL;
156 this->destroyGLContext();
157 }
158 }
160 return interface;
161 }
163 void SkNativeGLContext::makeCurrent() const {
164 if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
165 SkDebugf("Could not set the context.\n");
166 }
167 }
169 void SkNativeGLContext::swapBuffers() const {
170 if (!eglSwapBuffers(fDisplay, fSurface)) {
171 SkDebugf("Could not complete eglSwapBuffers.\n");
172 }
173 }
