std::vector<DXGI_SAMPLE_DESC> EnumAAModes(IDXGIAdapter* adapter)
{
std::vector<DXGI_SAMPLE_DESC> aa_modes;
// NOTE: D3D 10.0 doesn't support multisampled resources which are bound as depth buffers AND shader resources.
// Thus, we can't have MSAA with 10.0 level hardware.
ID3D11Device* device;
ID3D11DeviceContext* context;
D3D_FEATURE_LEVEL feat_level;
HRESULT hr = PD3D11CreateDevice(adapter, D3D_DRIVER_TYPE_UNKNOWN, nullptr, D3D11_CREATE_DEVICE_SINGLETHREADED, supported_feature_levels, NUM_SUPPORTED_FEATURE_LEVELS, D3D11_SDK_VERSION, &device, &feat_level, &context);
if (FAILED(hr) || feat_level == D3D_FEATURE_LEVEL_10_0)
{
DXGI_SAMPLE_DESC desc;
desc.Count = 1;
desc.Quality = 0;
aa_modes.push_back(desc);
SAFE_RELEASE(context);
SAFE_RELEASE(device);
}
else
{
for (int samples = 0; samples < D3D11_MAX_MULTISAMPLE_SAMPLE_COUNT; ++samples)
{
UINT quality_levels = 0;
device->CheckMultisampleQualityLevels(DXGI_FORMAT_R8G8B8A8_UNORM, samples, &quality_levels);
if (quality_levels > 0)
{
DXGI_SAMPLE_DESC desc;
desc.Count = samples;
for (desc.Quality = 0; desc.Quality < quality_levels; ++desc.Quality)
aa_modes.push_back(desc);
}
}
context->Release();
device->Release();
}
return aa_modes;
}
