I am relatively new to game programming and I have been following some tutorials online for setting up a game window, game loop and initializing the required directx components in order to start drawing some meshes and textures to the screen. I have all of it working, except I am having issues with detecting MSAA levels. At some point I would like to offer different settings but for now I am just trying to detect the highest MSAA supported and set that on the swap chain.

I'm sure this is a simple feat but below is what I am having trouble with. Any advice would be greatly appreciated!!

...other initialization code here....

....create a device...

...declare a swap chain....

swapChainDescription.SampleDesc.Quality = 0;


if (m_configuration->EnableMSAA)
{
UINT sampleCount = GetMaxMSAASupport();


swapChainDescription.SampleDesc.Count = sampleCount;
}
else
{
swapChainDescription.SampleDesc.Count = 1;
}

UINT Direct3d::GetMaxMSAASupport()
{
UINT maxQualityLevel = 0;


for (UINT sampleCount = D3D11_MAX_MULTISAMPLE_SAMPLE_COUNT; sampleCount > 0; sampleCount /= 2)
{
if (SUCCEEDED(m_device->CheckMultisampleQualityLevels(DXGI_FORMAT_R8G8B8A8_UNORM, sampleCount, &maxQualityLevel) && 
maxQualityLevel <= 0))
{
return sampleCount;
}
}
}

I seem to have resolved this w/the following fix. I am still unsure on what the sample count is vs the quality level but the below code works for detecting the max supported sample count (xMSAA level). To get the max available quality level it would simple be --&maxQualityLevel.

UINT Direct3d::GetMaxMSAASupport()
{
UINT maxQualityLevel = 0;


for (UINT sampleCount = D3D11_MAX_MULTISAMPLE_SAMPLE_COUNT; sampleCount > 0; sampleCount /= 2)
{
if (sampleCount == 1) return sampleCount; 


if (SUCCEEDED(m_device->CheckMultisampleQualityLevels(DXGI_FORMAT_R8G8B8A8_UNORM, sampleCount, &maxQualityLevel)) && 
maxQualityLevel > 0)
{
return sampleCount;
}
}
}