void createDeviceAndQueue(GR_DEVICE& device, GR_QUEUE& universalQueue) {
// Find Mantle compatible GPU handles
GR_APPLICATION_INFO appInfo = {};
appInfo.apiVersion = GR_API_VERSION;
GR_PHYSICAL_GPU gpus[GR_MAX_PHYSICAL_GPUS] = {};
GR_UINT gpuCount = 0;
grInitAndEnumerateGpus(&appInfo, nullptr, &gpuCount, gpus);
// Create device from first compatible GPU
GR_DEVICE_QUEUE_CREATE_INFO queueInfo = {};
queueInfo.queueType = GR_QUEUE_UNIVERSAL;
queueInfo.queueCount = 1;
assert(grGetExtensionSupport(gpus[0], "GR_WSI_WINDOWS") == GR_SUCCESS);
static const GR_CHAR* const ppExtensions[] = {
"GR_WSI_WINDOWS",
};
GR_DEVICE_CREATE_INFO deviceInfo = {};
deviceInfo.queueRecordCount = 1;
deviceInfo.pRequestedQueues = &queueInfo;
deviceInfo.extensionCount = 1;
deviceInfo.ppEnabledExtensionNames = ppExtensions;
deviceInfo.flags |= GR_DEVICE_CREATE_VALIDATION;
deviceInfo.maxValidationLevel = GR_VALIDATION_LEVEL_4;
grCreateDevice(gpus[0], &deviceInfo, &device);
grGetDeviceQueue(device, GR_QUEUE_UNIVERSAL, 0, &universalQueue);
}
int main() {
SetConsoleTitle(L"Mantle Example");
GR_APPLICATION_INFO appInfo = {};
appInfo.pAppName = "Example";
appInfo.apiVersion = GR_API_VERSION;
GR_UINT32 gpuCount;
GR_PYSICAL_GPU gpus[GR_MAX_PHYSICAL_GPUS];
GR_RESULT result = grInitAndEnumerateGpus(&appInfo, &gpuCount, &gpuCount, &gpus[0]);
if(result == GR_SUCCESS) {
printf("GPU Count: %d\n", gpuCount);
} else {
printf("Error: %d", result);
}
getchar();
return 0;
}
