public unsafe void CalculateLossy(IDeviceContext context, ITexture2D target, ITexture2D previous, ITexture2D temporalDiff, int mostDetailedMip)
{
var mipInfo = new MipInfo { MipLevel = mostDetailedMip, CoordDivisor = 1 << mostDetailedMip };
var map = context.Map(mipInfoBuffer, 0, MapType.WriteDiscard, MapFlags.None);
*(MipInfo*)map.Data = mipInfo;
context.Unmap(mipInfoBuffer, 0);
// todo: try doing everything using MostDetailedMip of SRV
context.ShaderForDispatching = computeShader;
context.ComputeStage.UniformBuffers[0] = mipInfoBuffer;
context.ComputeStage.ShaderResources[0] = previous.ViewAsShaderResource(formatId, 0, previous.MipLevels);
context.ComputeStage.ShaderResources[1] = temporalDiff.ViewAsShaderResource(formatId, 0, temporalDiff.MipLevels);
context.ComputeStage.UnorderedAccessResources[0] = target.ViewAsUnorderedAccessResource(formatId, 0);
context.Dispatch(RavcMath.DivideAndCeil(target.Width, 16), RavcMath.DivideAndCeil(target.Height, 16), 1);
}
public unsafe void CalculateDiff(IDeviceContext context, ITexture2D target, ITexture2D current, ITexture2D parentTexture, int colorDiffThreshold)
{
context.ShaderForDispatching = computeShader;
var map = context.Map(frameInfoBuffer, 0, MapType.WriteDiscard, MapFlags.None);
*(Vector4*)map.Data = new Vector4(colorDiffThreshold, 0, 0, 0);
context.Unmap(frameInfoBuffer, 0);
context.ComputeStage.UniformBuffers[0] = frameInfoBuffer;
for (int i = 0; i < EncodingConstants.MipLevels; i++)
{
var uav = target.ViewAsUnorderedAccessResource(formatId, i);
var currentSrv = current.ViewAsShaderResource(formatId, i, 1);
var parentSrv = parentTexture.ViewAsShaderResource(formatId, i, 1);
context.ComputeStage.UnorderedAccessResources[0] = uav;
context.ComputeStage.ShaderResources[0] = currentSrv;
context.ComputeStage.ShaderResources[1] = parentSrv;
context.Dispatch(RavcMath.DivideAndCeil(target.Width >> i, 16), RavcMath.DivideAndCeil(target.Height >> i, 16), 1);
}
}