kylawl

// Copyright Luminawesome Games Ltd. 2015
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
// and associated documentation files (the “Software”), to deal in the Software without 
// restriction, including without limitation the rights to use, copy, modify, merge, publish, 
// distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or 
// substantial portions of the Software.

sebbbi

// NOTE: Must bind 8x single mip RWTexture views, because HLSL doesn't have .mips member for RWTexture2D. (SRVs only have .mips member)
// NOTE: globallycoherent attribute is needed. Without it writes aren't guaranteed to be seen by other groups
globallycoherent RWTexture2D<float> MipTextures[8];
RWTexture2D<uint> Counters[8];
groupshared uint CounterReturnLDS;

[numthreads(16, 16, 1)]
void GenerateMipPyramid(uint3 Tid : SV_DispatchThreadID, uint3 Group : SV_GroupId, uint Gix : SV_GroupIndex)
{
	[unroll]