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| 1 /* | |
| 2 * Copyright 2011 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 #include "gl/SkGLContext.h" | |
| 8 | |
| 9 #include <GLES2/gl2.h> | |
| 10 | |
| 11 #define EGL_EGLEXT_PROTOTYPES | |
| 12 #include <EGL/egl.h> | |
| 13 #include <EGL/eglext.h> | |
| 14 | |
| 15 #include "gl/GrGLDefines.h" | |
| 16 #include "gl/GrGLUtil.h" | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 // TODO: Share this class with ANGLE if/when it gets support for EGL_KHR_fence_s
ync. | |
| 21 class SkEGLFenceSync : public SkGpuFenceSync { | |
| 22 public: | |
| 23 static SkEGLFenceSync* CreateIfSupported(EGLDisplay); | |
| 24 | |
| 25 SkPlatformGpuFence SK_WARN_UNUSED_RESULT insertFence() const override; | |
| 26 bool waitFence(SkPlatformGpuFence fence, bool flush) const override; | |
| 27 void deleteFence(SkPlatformGpuFence fence) const override; | |
| 28 | |
| 29 private: | |
| 30 SkEGLFenceSync(EGLDisplay display) : fDisplay(display) {} | |
| 31 | |
| 32 EGLDisplay fDisplay; | |
| 33 | |
| 34 typedef SkGpuFenceSync INHERITED; | |
| 35 }; | |
| 36 | |
| 37 class EGLGLContext : public SkGLContext { | |
| 38 public: | |
| 39 EGLGLContext(GrGLStandard forcedGpuAPI); | |
| 40 ~EGLGLContext() override; | |
| 41 | |
| 42 GrEGLImage texture2DToEGLImage(GrGLuint texID) const override; | |
| 43 void destroyEGLImage(GrEGLImage) const override; | |
| 44 GrGLuint eglImageToExternalTexture(GrEGLImage) const override; | |
| 45 SkGLContext* createNew() const override; | |
| 46 | |
| 47 private: | |
| 48 void destroyGLContext(); | |
| 49 | |
| 50 void onPlatformMakeCurrent() const override; | |
| 51 void onPlatformSwapBuffers() const override; | |
| 52 GrGLFuncPtr onPlatformGetProcAddress(const char*) const override; | |
| 53 | |
| 54 EGLContext fContext; | |
| 55 EGLDisplay fDisplay; | |
| 56 EGLSurface fSurface; | |
| 57 }; | |
| 58 | |
| 59 EGLGLContext::EGLGLContext(GrGLStandard forcedGpuAPI) | |
| 60 : fContext(EGL_NO_CONTEXT) | |
| 61 , fDisplay(EGL_NO_DISPLAY) | |
| 62 , fSurface(EGL_NO_SURFACE) { | |
| 63 static const EGLint kEGLContextAttribsForOpenGL[] = { | |
| 64 EGL_NONE | |
| 65 }; | |
| 66 | |
| 67 static const EGLint kEGLContextAttribsForOpenGLES[] = { | |
| 68 EGL_CONTEXT_CLIENT_VERSION, 2, | |
| 69 EGL_NONE | |
| 70 }; | |
| 71 | |
| 72 static const struct { | |
| 73 const EGLint* fContextAttribs; | |
| 74 EGLenum fAPI; | |
| 75 EGLint fRenderableTypeBit; | |
| 76 GrGLStandard fStandard; | |
| 77 } kAPIs[] = { | |
| 78 { // OpenGL | |
| 79 kEGLContextAttribsForOpenGL, | |
| 80 EGL_OPENGL_API, | |
| 81 EGL_OPENGL_BIT, | |
| 82 kGL_GrGLStandard | |
| 83 }, | |
| 84 { // OpenGL ES. This seems to work for both ES2 and 3 (when available)
. | |
| 85 kEGLContextAttribsForOpenGLES, | |
| 86 EGL_OPENGL_ES_API, | |
| 87 EGL_OPENGL_ES2_BIT, | |
| 88 kGLES_GrGLStandard | |
| 89 }, | |
| 90 }; | |
| 91 | |
| 92 size_t apiLimit = SK_ARRAY_COUNT(kAPIs); | |
| 93 size_t api = 0; | |
| 94 if (forcedGpuAPI == kGL_GrGLStandard) { | |
| 95 apiLimit = 1; | |
| 96 } else if (forcedGpuAPI == kGLES_GrGLStandard) { | |
| 97 api = 1; | |
| 98 } | |
| 99 SkASSERT(forcedGpuAPI == kNone_GrGLStandard || kAPIs[api].fStandard == force
dGpuAPI); | |
| 100 | |
| 101 SkAutoTUnref<const GrGLInterface> gl; | |
| 102 | |
| 103 for (; nullptr == gl.get() && api < apiLimit; ++api) { | |
| 104 fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); | |
| 105 | |
| 106 EGLint majorVersion; | |
| 107 EGLint minorVersion; | |
| 108 eglInitialize(fDisplay, &majorVersion, &minorVersion); | |
| 109 | |
| 110 #if 0 | |
| 111 SkDebugf("VENDOR: %s\n", eglQueryString(fDisplay, EGL_VENDOR)); | |
| 112 SkDebugf("APIS: %s\n", eglQueryString(fDisplay, EGL_CLIENT_APIS)); | |
| 113 SkDebugf("VERSION: %s\n", eglQueryString(fDisplay, EGL_VERSION)); | |
| 114 SkDebugf("EXTENSIONS %s\n", eglQueryString(fDisplay, EGL_EXTENSIONS)); | |
| 115 #endif | |
| 116 | |
| 117 if (!eglBindAPI(kAPIs[api].fAPI)) { | |
| 118 continue; | |
| 119 } | |
| 120 | |
| 121 EGLint numConfigs = 0; | |
| 122 const EGLint configAttribs[] = { | |
| 123 EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, | |
| 124 EGL_RENDERABLE_TYPE, kAPIs[api].fRenderableTypeBit, | |
| 125 EGL_RED_SIZE, 8, | |
| 126 EGL_GREEN_SIZE, 8, | |
| 127 EGL_BLUE_SIZE, 8, | |
| 128 EGL_ALPHA_SIZE, 8, | |
| 129 EGL_NONE | |
| 130 }; | |
| 131 | |
| 132 EGLConfig surfaceConfig; | |
| 133 if (!eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numCon
figs)) { | |
| 134 SkDebugf("eglChooseConfig failed. EGL Error: 0x%08x\n", eglGetError(
)); | |
| 135 continue; | |
| 136 } | |
| 137 | |
| 138 if (0 == numConfigs) { | |
| 139 SkDebugf("No suitable EGL config found.\n"); | |
| 140 continue; | |
| 141 } | |
| 142 | |
| 143 fContext = eglCreateContext(fDisplay, surfaceConfig, nullptr, kAPIs[api]
.fContextAttribs); | |
| 144 if (EGL_NO_CONTEXT == fContext) { | |
| 145 SkDebugf("eglCreateContext failed. EGL Error: 0x%08x\n", eglGetErro
r()); | |
| 146 continue; | |
| 147 } | |
| 148 | |
| 149 static const EGLint kSurfaceAttribs[] = { | |
| 150 EGL_WIDTH, 1, | |
| 151 EGL_HEIGHT, 1, | |
| 152 EGL_NONE | |
| 153 }; | |
| 154 | |
| 155 fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, kSurfaceAttr
ibs); | |
| 156 if (EGL_NO_SURFACE == fSurface) { | |
| 157 SkDebugf("eglCreatePbufferSurface failed. EGL Error: 0x%08x\n", eglG
etError()); | |
| 158 this->destroyGLContext(); | |
| 159 continue; | |
| 160 } | |
| 161 | |
| 162 if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) { | |
| 163 SkDebugf("eglMakeCurrent failed. EGL Error: 0x%08x\n", eglGetError(
)); | |
| 164 this->destroyGLContext(); | |
| 165 continue; | |
| 166 } | |
| 167 | |
| 168 gl.reset(GrGLCreateNativeInterface()); | |
| 169 if (nullptr == gl.get()) { | |
| 170 SkDebugf("Failed to create gl interface.\n"); | |
| 171 this->destroyGLContext(); | |
| 172 continue; | |
| 173 } | |
| 174 | |
| 175 if (!gl->validate()) { | |
| 176 SkDebugf("Failed to validate gl interface.\n"); | |
| 177 this->destroyGLContext(); | |
| 178 continue; | |
| 179 } | |
| 180 | |
| 181 this->init(gl.release(), SkEGLFenceSync::CreateIfSupported(fDisplay)); | |
| 182 break; | |
| 183 } | |
| 184 } | |
| 185 | |
| 186 EGLGLContext::~EGLGLContext() { | |
| 187 this->teardown(); | |
| 188 this->destroyGLContext(); | |
| 189 } | |
| 190 | |
| 191 void EGLGLContext::destroyGLContext() { | |
| 192 if (fDisplay) { | |
| 193 eglMakeCurrent(fDisplay, 0, 0, 0); | |
| 194 | |
| 195 if (fContext) { | |
| 196 eglDestroyContext(fDisplay, fContext); | |
| 197 fContext = EGL_NO_CONTEXT; | |
| 198 } | |
| 199 | |
| 200 if (fSurface) { | |
| 201 eglDestroySurface(fDisplay, fSurface); | |
| 202 fSurface = EGL_NO_SURFACE; | |
| 203 } | |
| 204 | |
| 205 //TODO should we close the display? | |
| 206 fDisplay = EGL_NO_DISPLAY; | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 GrEGLImage EGLGLContext::texture2DToEGLImage(GrGLuint texID) const { | |
| 211 if (!this->gl()->hasExtension("EGL_KHR_gl_texture_2D_image")) { | |
| 212 return GR_EGL_NO_IMAGE; | |
| 213 } | |
| 214 GrEGLImage img; | |
| 215 GrEGLint attribs[] = { GR_EGL_GL_TEXTURE_LEVEL, 0, GR_EGL_NONE }; | |
| 216 GrEGLClientBuffer clientBuffer = reinterpret_cast<GrEGLClientBuffer>(texID); | |
| 217 GR_GL_CALL_RET(this->gl(), img, | |
| 218 EGLCreateImage(fDisplay, fContext, GR_EGL_GL_TEXTURE_2D, clie
ntBuffer, attribs)); | |
| 219 return img; | |
| 220 } | |
| 221 | |
| 222 void EGLGLContext::destroyEGLImage(GrEGLImage image) const { | |
| 223 GR_GL_CALL(this->gl(), EGLDestroyImage(fDisplay, image)); | |
| 224 } | |
| 225 | |
| 226 GrGLuint EGLGLContext::eglImageToExternalTexture(GrEGLImage image) const { | |
| 227 GrGLClearErr(this->gl()); | |
| 228 if (!this->gl()->hasExtension("GL_OES_EGL_image_external")) { | |
| 229 return 0; | |
| 230 } | |
| 231 typedef GrGLvoid (*EGLImageTargetTexture2DProc)(GrGLenum, GrGLeglImage); | |
| 232 | |
| 233 EGLImageTargetTexture2DProc glEGLImageTargetTexture2D = | |
| 234 (EGLImageTargetTexture2DProc) eglGetProcAddress("glEGLImageTargetTexture
2DOES"); | |
| 235 if (!glEGLImageTargetTexture2D) { | |
| 236 return 0; | |
| 237 } | |
| 238 GrGLuint texID; | |
| 239 glGenTextures(1, &texID); | |
| 240 if (!texID) { | |
| 241 return 0; | |
| 242 } | |
| 243 glBindTexture(GR_GL_TEXTURE_EXTERNAL, texID); | |
| 244 if (glGetError() != GR_GL_NO_ERROR) { | |
| 245 glDeleteTextures(1, &texID); | |
| 246 return 0; | |
| 247 } | |
| 248 glEGLImageTargetTexture2D(GR_GL_TEXTURE_EXTERNAL, image); | |
| 249 if (glGetError() != GR_GL_NO_ERROR) { | |
| 250 glDeleteTextures(1, &texID); | |
| 251 return 0; | |
| 252 } | |
| 253 return texID; | |
| 254 } | |
| 255 | |
| 256 SkGLContext* EGLGLContext::createNew() const { | |
| 257 SkGLContext* ctx = SkCreatePlatformGLContext(this->gl()->fStandard); | |
| 258 if (ctx) { | |
| 259 ctx->makeCurrent(); | |
| 260 } | |
| 261 return ctx; | |
| 262 } | |
| 263 | |
| 264 void EGLGLContext::onPlatformMakeCurrent() const { | |
| 265 if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) { | |
| 266 SkDebugf("Could not set the context.\n"); | |
| 267 } | |
| 268 } | |
| 269 | |
| 270 void EGLGLContext::onPlatformSwapBuffers() const { | |
| 271 if (!eglSwapBuffers(fDisplay, fSurface)) { | |
| 272 SkDebugf("Could not complete eglSwapBuffers.\n"); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 GrGLFuncPtr EGLGLContext::onPlatformGetProcAddress(const char* procName) const { | |
| 277 return eglGetProcAddress(procName); | |
| 278 } | |
| 279 | |
| 280 static bool supports_egl_extension(EGLDisplay display, const char* extension) { | |
| 281 size_t extensionLength = strlen(extension); | |
| 282 const char* extensionsStr = eglQueryString(display, EGL_EXTENSIONS); | |
| 283 while (const char* match = strstr(extensionsStr, extension)) { | |
| 284 // Ensure the string we found is its own extension, not a substring of a
larger extension | |
| 285 // (e.g. GL_ARB_occlusion_query / GL_ARB_occlusion_query2). | |
| 286 if ((match == extensionsStr || match[-1] == ' ') && | |
| 287 (match[extensionLength] == ' ' || match[extensionLength] == '\0')) { | |
| 288 return true; | |
| 289 } | |
| 290 extensionsStr = match + extensionLength; | |
| 291 } | |
| 292 return false; | |
| 293 } | |
| 294 | |
| 295 SkEGLFenceSync* SkEGLFenceSync::CreateIfSupported(EGLDisplay display) { | |
| 296 if (!display || !supports_egl_extension(display, "EGL_KHR_fence_sync")) { | |
| 297 return nullptr; | |
| 298 } | |
| 299 return new SkEGLFenceSync(display); | |
| 300 } | |
| 301 | |
| 302 SkPlatformGpuFence SkEGLFenceSync::insertFence() const { | |
| 303 return eglCreateSyncKHR(fDisplay, EGL_SYNC_FENCE_KHR, nullptr); | |
| 304 } | |
| 305 | |
| 306 bool SkEGLFenceSync::waitFence(SkPlatformGpuFence platformFence, bool flush) con
st { | |
| 307 EGLSyncKHR eglsync = static_cast<EGLSyncKHR>(platformFence); | |
| 308 return EGL_CONDITION_SATISFIED_KHR == | |
| 309 eglClientWaitSyncKHR(fDisplay, | |
| 310 eglsync, | |
| 311 flush ? EGL_SYNC_FLUSH_COMMANDS_BIT_KHR : 0, | |
| 312 EGL_FOREVER_KHR); | |
| 313 } | |
| 314 | |
| 315 void SkEGLFenceSync::deleteFence(SkPlatformGpuFence platformFence) const { | |
| 316 EGLSyncKHR eglsync = static_cast<EGLSyncKHR>(platformFence); | |
| 317 eglDestroySyncKHR(fDisplay, eglsync); | |
| 318 } | |
| 319 | |
| 320 } // anonymous namespace | |
| 321 | |
| 322 SkGLContext* SkCreatePlatformGLContext(GrGLStandard forcedGpuAPI, SkGLContext* s
hareContext) { | |
| 323 SkASSERT(!shareContext); | |
| 324 if (shareContext) { | |
| 325 return nullptr; | |
| 326 } | |
| 327 EGLGLContext* ctx = new EGLGLContext(forcedGpuAPI); | |
| 328 if (!ctx->isValid()) { | |
| 329 delete ctx; | |
| 330 return nullptr; | |
| 331 } | |
| 332 return ctx; | |
| 333 } | |
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Chromium Code Reviews
Issue 1815823002:
Move SkGLContext and some GrGLInterface implementations to skgputest module (Closed)
Base URL: https://chromium.googlesource.com/skia.git@debugobject