#include "CmD3D11RenderSystem.h"
#include "CmRenderSystem.h"
#include "CmException.h"

namespace CamelotEngine
{
	D3D11Device& D3D11RenderSystem::getPrimaryDevice() 
	{ 
		CM_EXCEPT(NotImplementedException, "Not implemented"); 
	}

	void D3D11RenderSystem::determineFSAASettings(UINT32 fsaa, const String& fsaaHint, DXGI_FORMAT format, DXGI_SAMPLE_DESC* outFSAASettings)
	{
		CM_EXCEPT(NotImplementedException, "Not implemented");

		/*
		bool ok = false;
		bool qualityHint = fsaaHint.find("Quality") != String::npos;
		size_t origFSAA = fsaa;
		bool tryCSAA = false;
		// NVIDIA, prefer CSAA if available for 8+
		// it would be tempting to use getCapabilities()->getVendor() == GPU_NVIDIA but
		// if this is the first window, caps will not be initialised yet
		
		if (mActiveD3DDriver->getAdapterIdentifier().VendorId == 0x10DE && 
			fsaa >= 8)
		{
			tryCSAA	 = true;
		}

		while (!ok)
		{
			// Deal with special cases
			if (tryCSAA)
			{
				// see http://developer.nvidia.com/object/coverage-sampled-aa.html
				switch(fsaa)
				{
				case 8:
					if (qualityHint)
					{
						outFSAASettings->Count = 8;
						outFSAASettings->Quality = 8;
					}
					else
					{
						outFSAASettings->Count = 4;
						outFSAASettings->Quality = 8;
					}
					break;
				case 16:
					if (qualityHint)
					{
						outFSAASettings->Count = 8;
						outFSAASettings->Quality = 16;
					}
					else
					{
						outFSAASettings->Count = 4;
						outFSAASettings->Quality = 16;
					}
					break;
				}
			}
			else // !CSAA
			{
				outFSAASettings->Count = fsaa == 0 ? 1 : fsaa;
				outFSAASettings->Quality = 0;
			}


			HRESULT hr;
			UINT outQuality;
			hr = mDevice->CheckMultisampleQualityLevels( 
				format, 
				outFSAASettings->Count, 
				&outQuality);

			if (SUCCEEDED(hr) && (!tryCSAA || outQuality > outFSAASettings->Quality))
			{
				ok = true;
			}
			else
			{
				// downgrade
				if (tryCSAA && fsaa == 8)
				{
					// for CSAA, we'll try downgrading with quality mode at all samples.
					// then try without quality, then drop CSAA
					if (qualityHint)
					{
						// drop quality first
						qualityHint = false;
					}
					else
					{
						// drop CSAA entirely 
						tryCSAA = false;
					}
					// return to original requested samples
					fsaa = static_cast<UINT32>(origFSAA);
				}
				else
				{
					// drop samples
					--fsaa;

					if (fsaa == 1)
					{
						// ran out of options, no FSAA
						fsaa = 0;
						ok = true;
					}
				}
			}

		} // while !ok
		*/
	}
}