mirror of
https://github.com/X0nk/Bliss-Shader.git
synced 2024-12-23 01:59:39 +08:00
58 lines
2.5 KiB
GLSL
58 lines
2.5 KiB
GLSL
uniform sampler2D colortex6;
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uniform vec2 texelSize;
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varying vec2 texcoord;
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uniform float viewWidth;
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uniform float viewHeight;
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vec2 resScale = vec2(1920.,1080.)/max(vec2(viewWidth,viewHeight),vec2(1920.0,1080.));
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vec3 gauss1D(vec2 coord,vec2 dir,float alpha,int maxIT){
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vec4 tot = vec4(0.);
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float maxTC = 0.25*resScale.x;
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float minTC = 0.;
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for (int i = -maxIT;i<maxIT+1;i++){
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float weight = exp(-i*i*alpha*4.0);
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//here we take advantage of bilinear filtering for 2x less sample, as a side effect the gaussian won't be totally centered for small blurs
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vec2 spCoord = coord+dir*texelSize*(2.0*i+0.5);
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tot += vec4(texture2D(colortex6,spCoord).rgb,1.0)*weight*float(spCoord.x > minTC && spCoord.x < maxTC);
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}
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return tot.rgb/max(1.0,tot.a);
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}
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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void main() {
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/* DRAWBUFFERS:6 */
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vec2 texcoord = (gl_FragCoord.xy*vec2(2.0,4.0))*texelSize;
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vec2 gaussDir = vec2(1.0,0.0);
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gl_FragData[0].rgb = vec3(0.0);
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vec2 tc2 = texcoord*vec2(2.0,1.)/2.;
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if (tc2.x < 1.0*resScale.x && tc2.y <1.0*resScale.y)
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gl_FragData[0].xyz = gauss1D(tc2/2,gaussDir,0.16,0);
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vec2 tc4 = texcoord*vec2(4.0,1.)/2.-vec2(0.5*resScale.x+4.0*texelSize.x,0.)*2.0;
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if (tc4.x > 0.0 && tc4.y > 0.0 && tc4.x < 1.0*resScale.x && tc4.y <1.0*resScale.y)
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gl_FragData[0].xyz = gauss1D(tc4/2,gaussDir,0.16,3);
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vec2 tc8 = texcoord*vec2(8.0,1.)/2.-vec2(0.75*resScale.x+8.*texelSize.x,0.)*4.0;
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if (tc8.x > 0.0 && tc8.y > 0.0 && tc8.x < 1.0*resScale.x && tc8.y <1.0*resScale.y)
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gl_FragData[0].xyz = gauss1D(tc8/2,gaussDir,0.035,6);
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vec2 tc16 = texcoord*vec2(8.0,1./2.)-vec2(0.875*resScale.x+12.*texelSize.x,0.)*8.0;
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if (tc16.x > 0.0 && tc16.y > 0.0 && tc16.x < 1.0*resScale.x && tc16.y <1.0*resScale.y)
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gl_FragData[0].xyz = gauss1D(tc16/2,gaussDir,0.0085,12);
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vec2 tc32 = texcoord*vec2(16.0,1./2.)-vec2(0.9375*resScale.x+16.*texelSize.x,0.)*16.0;
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if (tc32.x > 0.0 && tc32.y > 0.0 && tc32.x < 1.0*resScale.x && tc32.y <1.0*resScale.y)
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gl_FragData[0].xyz = gauss1D(tc32/2,gaussDir,0.002,28);
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vec2 tc64 = texcoord*vec2(32.0,1./2.)-vec2(0.96875*resScale.x+20.*texelSize.x,0.)*32.0;
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if (tc64.x > 0.0 && tc64.y > 0.0 && tc64.x < 1.0*resScale.x && tc64.y <1.0*resScale.y)
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gl_FragData[0].xyz = gauss1D(tc64/2,gaussDir,0.0005,60);
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gl_FragData[0].rgb = clamp(gl_FragData[0].rgb,0.0,65000.);
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}
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