bool GrGLContextInfo::initialize(const GrGLInterface* interface) {
this->reset();
// We haven't validated the GrGLInterface yet, so check for GetString
// function pointer
if (interface->fGetString) {
const GrGLubyte* verUByte;
GR_GL_CALL_RET(interface, verUByte, GetString(GR_GL_VERSION));
const char* ver = reinterpret_cast<const char*>(verUByte);
GrGLBinding binding = GrGLGetBindingInUseFromString(ver);
if (0 != binding && interface->validate(binding) && fExtensions.init(binding, interface)) {
fBindingInUse = binding;
fGLVersion = GrGLGetVersionFromString(ver);
fGLSLGeneration = GrGetGLSLGeneration(fBindingInUse, interface);
fVendor = GrGLGetVendor(interface);
fIsMesa = GrGLIsMesaFromVersionString(ver);
fGLCaps->init(*this, interface);
return true;
}
}
return false;
}
const GrGLInterface* GrGLCreateNativeInterface() {
GrGLGetStringiProc getStringi = (GrGLGetStringiProc) eglGetProcAddress("glGetStringi");
const char* verStr = reinterpret_cast<const char*>(glGetString(GR_GL_VERSION));
GrGLVersion version = GrGLGetVersionFromString(verStr);
GrGLBinding binding = GrGLGetBindingInUseFromString(verStr);
GrGLExtensions extensions;
if (!extensions.init(binding, glGetString, getStringi, glGetIntegerv)) {
return NULL;
}
if (kES_GrGLBinding == binding) {
return create_es_interface(version, extensions);
} else if (kDesktop_GrGLBinding == binding) {
return create_desktop_interface(version, extensions);
} else {
return NULL;
}
}
GrGLBinding GrGLGetBindingInUse(const GrGLInterface* gl) {
const GrGLubyte* v;
GR_GL_CALL_RET(gl, v, GetString(GR_GL_VERSION));
return GrGLGetBindingInUseFromString((const char*) v);
}
