wehub-resource-sync
105 lines
2.6 KiB
HLSL
105 lines
2.6 KiB
HLSL
//RWTexture2D<float4> outputTexture : register(u0);
|
|
Texture2D<float4> ImageA : register(t0);
|
|
sampler texSampler : register(s0);
|
|
|
|
cbuffer ParamConstants : register(b0)
|
|
{
|
|
float2 Center;
|
|
float Size;
|
|
float Colorize;
|
|
float Distort;
|
|
float DistortOffset;
|
|
float ScaleImage;
|
|
float SampleCount;
|
|
|
|
}
|
|
|
|
|
|
cbuffer TimeConstants : register(b1)
|
|
{
|
|
float globalTime;
|
|
float time;
|
|
float runTime;
|
|
float beatTime;
|
|
}
|
|
|
|
struct vsOutput
|
|
{
|
|
float4 position : SV_POSITION;
|
|
float2 texCoord : TEXCOORD;
|
|
};
|
|
|
|
|
|
#define mod(x,y) (x-y*floor(x/y))
|
|
|
|
|
|
float3 chromaShift(float range) {
|
|
return float3(
|
|
clamp( 1.5 - abs(range + 1), 0,1) * 2,
|
|
clamp( 1.5 - abs(range ), 0,1)*1.5,
|
|
clamp( 1.5 - abs(range - 1), 0,1) * 2
|
|
);
|
|
}
|
|
|
|
|
|
float3 chromeShiftSine(float range) {
|
|
return float3(
|
|
(sin(( clamp(range,0,0.5)-0.75) * 3.1415 * 2)/ 2+0.5) * 4,
|
|
(sin((range-0.25) * 3.1415 * 2)/ 2+0.5)*2,
|
|
(sin(( clamp(range,0.5,1)-0.75) * 3.1415 * 2)/ 2+0.5)*4
|
|
);
|
|
}
|
|
|
|
|
|
// Newerer, happier, unicornsier and rainbowsier version of the above!
|
|
// (c) yupferris
|
|
// Thanks to Rune Stubbe for some math optimizations here :)
|
|
// see https://www.shadertoy.com/view/MdsyDX
|
|
float3 chromaShiftLinear(float f)
|
|
{
|
|
f = f * 3.0 - 1.5;
|
|
float3 col= saturate(float3(-f, 1.0 - abs(f), f));
|
|
return pow(col, 1.0 / 2.2);
|
|
}
|
|
|
|
|
|
float4 psMain(vsOutput psInput) : SV_TARGET
|
|
{
|
|
float clampedSampleCount = clamp( ((int)SampleCount/2)*2,1,100);
|
|
|
|
float2 p = psInput.texCoord;
|
|
float2 fromCenter = (0.5 + Center - p) / ScaleImage;
|
|
|
|
float distance = length(fromCenter);
|
|
float bulge = 1+Distort*0.5;
|
|
|
|
fromCenter *= pow(distance * DistortOffset, Distort) * bulge;
|
|
|
|
//float2 sampleDir = 0;
|
|
//float radialStrength= Size * pow( length(sampleDir),0.3);
|
|
float2 dir = Size * fromCenter * pow( length(fromCenter),0.3);
|
|
//float2 dir = sampleDir * radialStrength;
|
|
p = 0.5-fromCenter + Center;
|
|
//return float4(fromCenter,0,1);
|
|
//return ImageA.Sample(texSampler, p);
|
|
|
|
float4 blurredSum = 0;
|
|
float3 chromarizedSum = 0;
|
|
|
|
float step = 2./(clampedSampleCount+0.5);
|
|
// float2 p2 = -fromCenter+Center+0.5;
|
|
|
|
for (float f= -1.0; f <= 1; f+=step)
|
|
{
|
|
float4 col = ImageA.SampleLevel(texSampler, p + dir*f ,0);
|
|
blurredSum += col;
|
|
//chromarizedSum += col.rgb * chromeShiftSine(f/2+0.5);
|
|
//chromarizedSum += col.rgb * chromaShiftLinear(f/2 + 0.5)*2;
|
|
chromarizedSum += col.rgb * chromaShift(f);
|
|
}
|
|
|
|
chromarizedSum /= (clampedSampleCount);
|
|
blurredSum /= clampedSampleCount;
|
|
return float4(lerp(blurredSum.rgb, chromarizedSum.rgb, Colorize) , blurredSum.a);
|
|
}
|