IDXGIAdapter1*
DeviceManagerDx::GetDXGIAdapter()
{
if (mAdapter) {
return mAdapter;
}
nsModuleHandle dxgiModule(LoadLibrarySystem32(L"dxgi.dll"));
decltype(CreateDXGIFactory1)* createDXGIFactory1 = (decltype(CreateDXGIFactory1)*)
GetProcAddress(dxgiModule, "CreateDXGIFactory1");
if (!createDXGIFactory1) {
return nullptr;
}
// Try to use a DXGI 1.1 adapter in order to share resources
// across processes.
RefPtr<IDXGIFactory1> factory1;
HRESULT hr = createDXGIFactory1(__uuidof(IDXGIFactory1),
getter_AddRefs(factory1));
if (FAILED(hr) || !factory1) {
// This seems to happen with some people running the iZ3D driver.
// They won't get acceleration.
return nullptr;
}
if (!mDeviceStatus) {
// If we haven't created a device yet, and have no existing device status,
// then this must be the compositor device. Pick the first adapter we can.
MOZ_ASSERT(ProcessOwnsCompositor());
if (FAILED(factory1->EnumAdapters1(0, getter_AddRefs(mAdapter)))) {
return nullptr;
}
} else {
// In the UI and GPU process, we clear mDeviceStatus on device reset, so we
// should never reach here. Furthermore, the UI process does not create
// devices when using a GPU process.
//
// So, this should only ever get called on the content process.
MOZ_ASSERT(XRE_IsContentProcess());
// In the child process, we search for the adapter that matches the parent
// process. The first adapter can be mismatched on dual-GPU systems.
for (UINT index = 0; ; index++) {
RefPtr<IDXGIAdapter1> adapter;
if (FAILED(factory1->EnumAdapters1(index, getter_AddRefs(adapter)))) {
break;
}
const DxgiAdapterDesc& preferred = mDeviceStatus->adapter();
DXGI_ADAPTER_DESC desc;
if (SUCCEEDED(adapter->GetDesc(&desc)) &&
desc.AdapterLuid.HighPart == preferred.AdapterLuid.HighPart &&
desc.AdapterLuid.LowPart == preferred.AdapterLuid.LowPart &&
desc.VendorId == preferred.VendorId &&
desc.DeviceId == preferred.DeviceId)
{
mAdapter = adapter.forget();
break;
}
}
}
if (!mAdapter) {
return nullptr;
}
// We leak this module everywhere, we might as well do so here as well.
dxgiModule.disown();
return mAdapter;
}
bool
IsDX10Available()
{
DWORD isDX10Available;
if (GetDWORDRegKey(metroDX10Available, isDX10Available)) {
return isDX10Available;
}
HMODULE dxgiModule = LoadLibraryA("dxgi.dll");
if (!dxgiModule) {
SetDWORDRegKey(metroDX10Available, 0);
return false;
}
CreateDXGIFactory1Func createDXGIFactory1 =
(CreateDXGIFactory1Func) GetProcAddress(dxgiModule, "CreateDXGIFactory1");
if (!createDXGIFactory1) {
SetDWORDRegKey(metroDX10Available, 0);
return false;
}
HMODULE d3d10module = LoadLibraryA("d3d10_1.dll");
if (!d3d10module) {
SetDWORDRegKey(metroDX10Available, 0);
return false;
}
D3D10CreateDevice1Func createD3DDevice =
(D3D10CreateDevice1Func) GetProcAddress(d3d10module,
"D3D10CreateDevice1");
if (!createD3DDevice) {
SetDWORDRegKey(metroDX10Available, 0);
return false;
}
CComPtr<IDXGIFactory1> factory1;
if (FAILED(createDXGIFactory1(__uuidof(IDXGIFactory1), (void**)&factory1))) {
SetDWORDRegKey(metroDX10Available, 0);
return false;
}
CComPtr<IDXGIAdapter1> adapter1;
if (FAILED(factory1->EnumAdapters1(0, &adapter1))) {
SetDWORDRegKey(metroDX10Available, 0);
return false;
}
CComPtr<ID3D10Device1> device;
// Try for DX10.1
if (FAILED(createD3DDevice(adapter1, D3D10_DRIVER_TYPE_HARDWARE, nullptr,
D3D10_CREATE_DEVICE_BGRA_SUPPORT |
D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
D3D10_FEATURE_LEVEL_10_1,
D3D10_1_SDK_VERSION, &device))) {
// Try for DX10
if (FAILED(createD3DDevice(adapter1, D3D10_DRIVER_TYPE_HARDWARE, nullptr,
D3D10_CREATE_DEVICE_BGRA_SUPPORT |
D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
D3D10_FEATURE_LEVEL_10_0,
D3D10_1_SDK_VERSION, &device))) {
// Try for DX9.3 (we fall back to cairo and cairo has support for D3D 9.3)
if (FAILED(createD3DDevice(adapter1, D3D10_DRIVER_TYPE_HARDWARE, nullptr,
D3D10_CREATE_DEVICE_BGRA_SUPPORT |
D3D10_CREATE_DEVICE_PREVENT_INTERNAL_THREADING_OPTIMIZATIONS,
D3D10_FEATURE_LEVEL_9_3,
D3D10_1_SDK_VERSION, &device))) {
SetDWORDRegKey(metroDX10Available, 0);
return false;
}
}
}
SetDWORDRegKey(metroDX10Available, 1);
return true;
}
