SkANGLEGLContext::SkANGLEGLContext()
: fContext(EGL_NO_CONTEXT)
, fDisplay(EGL_NO_DISPLAY)
, fSurface(EGL_NO_SURFACE) {
EGLint numConfigs;
static const EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_NONE
};
fDisplay = GetD3DEGLDisplay(EGL_DEFAULT_DISPLAY);
if (EGL_NO_DISPLAY == fDisplay) {
SkDebugf("Could not create EGL display!");
return;
}
EGLint majorVersion;
EGLint minorVersion;
eglInitialize(fDisplay, &majorVersion, &minorVersion);
EGLConfig surfaceConfig;
eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs);
static const EGLint contextAttribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
fContext = eglCreateContext(fDisplay, surfaceConfig, NULL, contextAttribs);
static const EGLint surfaceAttribs[] = {
EGL_WIDTH, 1,
EGL_HEIGHT, 1,
EGL_NONE
};
fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, surfaceAttribs);
eglMakeCurrent(fDisplay, fSurface, fSurface, fContext);
SkAutoTUnref<const GrGLInterface> gl(GrGLCreateANGLEInterface());
if (NULL == gl.get()) {
SkDebugf("Could not create ANGLE GL interface!\n");
this->destroyGLContext();
return;
}
if (!gl->validate()) {
SkDebugf("Could not validate ANGLE GL interface!\n");
this->destroyGLContext();
return;
}
this->init(gl.detach());
}
void SkOSWindow::presentANGLE() {
SkAutoTUnref<const GrGLInterface> intf(GrGLCreateANGLEInterface());
if (intf) {
ANGLE_GL_CALL(intf, Flush());
}
eglSwapBuffers(fDisplay, fSurface);
}
const GrGLInterface* SkANGLEGLContext::createGLContext() {
fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
EGLint majorVersion;
EGLint minorVersion;
eglInitialize(fDisplay, &majorVersion, &minorVersion);
EGLint numConfigs;
static const EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_NONE
};
EGLConfig surfaceConfig;
eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs);
static const EGLint contextAttribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
fContext = eglCreateContext(fDisplay, surfaceConfig, NULL, contextAttribs);
static const EGLint surfaceAttribs[] = {
EGL_WIDTH, 1,
EGL_HEIGHT, 1,
EGL_NONE
};
fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, surfaceAttribs);
eglMakeCurrent(fDisplay, fSurface, fSurface, fContext);
const GrGLInterface* interface = GrGLCreateANGLEInterface();
if (NULL == interface) {
SkDebugf("Could not create ANGLE GL interface!\n");
this->destroyGLContext();
return NULL;
}
return interface;
}
