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;
}
bool GrGLContextInfo::initialize(const GrGLInterface* interface) {
this->reset();
// We haven't validated the GrGLInterface yet, so check for GetString
// function pointer
if (interface->fFunctions.fGetString) {
const GrGLubyte* verUByte;
GR_GL_CALL_RET(interface, verUByte, GetString(GR_GL_VERSION));
const char* ver = reinterpret_cast<const char*>(verUByte);
const GrGLubyte* rendererUByte;
GR_GL_CALL_RET(interface, rendererUByte, GetString(GR_GL_RENDERER));
const char* renderer = reinterpret_cast<const char*>(rendererUByte);
if (interface->validate()) {
fGLVersion = GrGLGetVersionFromString(ver);
if (GR_GL_INVALID_VER == fGLVersion) {
return false;
}
if (!GrGetGLSLGeneration(interface, &fGLSLGeneration)) {
return false;
}
fVendor = GrGLGetVendor(interface);
/*
* Qualcomm drivers have a horrendous bug with some drivers. Though they claim to
* support GLES 3.00, some perfectly valid GLSL300 shaders will only compile with
* #version 100, and will fail to compile with #version 300 es. In the long term, we
* need to lock this down to a specific driver version.
*/
if (kQualcomm_GrGLVendor == fVendor) {
fGLSLGeneration = k110_GrGLSLGeneration;
}
fRenderer = GrGLGetRendererFromString(renderer);
fIsMesa = GrGLIsMesaFromVersionString(ver);
fIsChromium = GrGLIsChromiumFromRendererString(renderer);
// This must occur before caps init.
fInterface.reset(SkRef(interface));
return fGLCaps->init(*this, interface);
}
}
return false;
}
std::unique_ptr<GrGLContext> GrGLContext::Make(sk_sp<const GrGLInterface> interface,
const GrContextOptions& options) {
if (!interface->validate()) {
return nullptr;
}
const GrGLubyte* verUByte;
GR_GL_CALL_RET(interface.get(), verUByte, GetString(GR_GL_VERSION));
const char* ver = reinterpret_cast<const char*>(verUByte);
const GrGLubyte* rendererUByte;
GR_GL_CALL_RET(interface.get(), rendererUByte, GetString(GR_GL_RENDERER));
const char* renderer = reinterpret_cast<const char*>(rendererUByte);
ConstructorArgs args;
args.fGLVersion = GrGLGetVersionFromString(ver);
if (GR_GL_INVALID_VER == args.fGLVersion) {
return nullptr;
}
if (!GrGLGetGLSLGeneration(interface.get(), &args.fGLSLGeneration)) {
return nullptr;
}
args.fVendor = GrGLGetVendor(interface.get());
args.fRenderer = GrGLGetRendererFromStrings(renderer, interface->fExtensions);
GrGLGetANGLEInfoFromString(renderer, &args.fANGLEBackend, &args.fANGLEVendor,
&args.fANGLERenderer);
/*
* Qualcomm drivers for the 3xx series have a horrendous bug with some drivers. Though they
* claim to support GLES 3.00, some perfectly valid GLSL300 shaders will only compile with
* #version 100, and will fail to compile with #version 300 es. In the long term, we
* need to lock this down to a specific driver version.
* ?????/2015 - This bug is still present in Lollipop pre-mr1
* 06/18/2015 - This bug does not affect the nexus 6 (which has an Adreno 4xx).
*/
if (kAdreno3xx_GrGLRenderer == args.fRenderer) {
args.fGLSLGeneration = k110_GrGLSLGeneration;
}
// Many ES3 drivers only advertise the ES2 image_external extension, but support the _essl3
// extension, and require that it be enabled to work with ESSL3. Other devices require the ES2
// extension to be enabled, even when using ESSL3. Some devices appear to only support the ES2
// extension. As an extreme (optional) solution, we can fallback to using ES2 shading language
// if we want to prioritize external texture support. skbug.com/7713
if (GR_IS_GR_GL_ES(interface->fStandard) &&
options.fPreferExternalImagesOverES3 &&
!options.fDisableDriverCorrectnessWorkarounds &&
interface->hasExtension("GL_OES_EGL_image_external") &&
args.fGLSLGeneration >= k330_GrGLSLGeneration &&
!interface->hasExtension("GL_OES_EGL_image_external_essl3") &&
!interface->hasExtension("OES_EGL_image_external_essl3")) {
args.fGLSLGeneration = k110_GrGLSLGeneration;
}
GrGLGetDriverInfo(interface->fStandard, args.fVendor, renderer, ver,
&args.fDriver, &args.fDriverVersion);
args.fContextOptions = &options;
args.fInterface = std::move(interface);
return std::unique_ptr<GrGLContext>(new GrGLContext(std::move(args)));
}
