wehub-resource-sync
83 lines
2.2 KiB
HLSL
83 lines
2.2 KiB
HLSL
// #include "shared/bias-functions.hlsl"
|
|
|
|
cbuffer ParamConstants : register(b0)
|
|
{
|
|
float2 Center;
|
|
float NumSamples;
|
|
float Length;
|
|
|
|
float4 RayColor;
|
|
|
|
float Decay;
|
|
float ApplyFxToBackground;
|
|
float Amount;
|
|
float RefineFactor;
|
|
float RefineSamples;
|
|
|
|
float AspectRatio;
|
|
}
|
|
|
|
// cbuffer Resolution : register(b1)
|
|
// {
|
|
// float TargetWidth;
|
|
// float TargetHeight;
|
|
// }
|
|
|
|
struct vsOutput
|
|
{
|
|
float4 position : SV_POSITION;
|
|
float2 texCoord : TEXCOORD;
|
|
};
|
|
|
|
Texture2D<float4> Image : register(t0);
|
|
Texture2D<float4> FxImage : register(t1);
|
|
Texture2D<float4> RayImage : register(t2);
|
|
|
|
sampler texSampler : register(s0);
|
|
|
|
float4 psMain(vsOutput input) : SV_TARGET
|
|
{
|
|
float2 centerproof = Center * float2(1, -1) + float2(0.5, 0.5);
|
|
|
|
float2 uv = input.texCoord;
|
|
|
|
float4 orgColor = Image.Sample(texSampler, uv) * lerp(1, FxImage.Sample(texSampler, uv), ApplyFxToBackground);
|
|
|
|
float2 delta = (uv - centerproof) * Length / NumSamples;
|
|
float4 colorSum = 0;
|
|
|
|
for (int i = 1; i < NumSamples; i++)
|
|
{
|
|
uv -= delta;
|
|
colorSum += Image.Sample(texSampler, uv) * FxImage.Sample(texSampler, uv) * pow(1 - (float)i / NumSamples, Decay);
|
|
}
|
|
|
|
return clamp(orgColor + colorSum / NumSamples * RayColor * Amount, 0, float4(1000, 1000, 1000, 1));
|
|
}
|
|
|
|
// An ill-fated attempt of a refinement pass.
|
|
// Sadly it has too many artifacts to be usable.
|
|
float4 Pass2Refine(vsOutput input) : SV_TARGET
|
|
{
|
|
|
|
float2 centerproof = Center * float2(1, -1) + float2(0.5, 0.5);
|
|
|
|
float2 uv = input.texCoord;
|
|
|
|
float4 orgColor = Image.Sample(texSampler, uv) * lerp(1, FxImage.Sample(texSampler, uv), ApplyFxToBackground);
|
|
|
|
int refineSampleCount = 20;
|
|
|
|
float extra = length((uv - centerproof) * float2(1, 1));
|
|
float2 delta = (uv - centerproof) * Length / refineSampleCount * RefineFactor * extra;
|
|
float4 colorSum = 0;
|
|
|
|
uv += delta * RefineSamples / 2;
|
|
for (int i = 1; i < RefineSamples; i++)
|
|
{
|
|
uv -= delta;
|
|
colorSum += RayImage.Sample(texSampler, uv); // * FxImage.Sample(texSampler, uv) * pow(1 - (float)i / NumSamples, Decay);
|
|
}
|
|
|
|
return clamp(orgColor + colorSum / NumSamples * RayColor * Amount, 0, float4(1000, 1000, 1000, 1));
|
|
} |