mirror of
https://github.com/X0nk/Bliss-Shader.git
synced 2024-12-22 17:47:34 +08:00
51 lines
2.0 KiB
GLSL
51 lines
2.0 KiB
GLSL
#version 120
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//downsample 1st pass (half res) for bloom
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#include "lib/settings.glsl"
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uniform sampler2D colortex5;
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// uniform sampler2D colortex8;
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uniform vec2 texelSize;
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uniform float viewWidth;
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uniform float viewHeight;
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#include "lib/res_params.glsl"
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void main() {
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/* DRAWBUFFERS:3 */
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vec2 resScale = max(vec2(viewWidth,viewHeight),vec2(1920.0,1080.))/vec2(1920.,1080.);
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vec2 quarterResTC = gl_FragCoord.xy*texelSize*2.*resScale/BLOOM_QUALITY;
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// float emissives1 = texture2D(colortex8,quarterResTC).a;
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// float emissives2 = emissives1 < 1.0 ? emissives1 : 0.0;
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// 0.5
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gl_FragData[0] = texture2D(colortex5,quarterResTC-1.0*vec2(texelSize.x,texelSize.y))/4.*0.5;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+1.0*vec2(texelSize.x,texelSize.y))/4.*0.5;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+vec2(-1.0*texelSize.x,1.0*texelSize.y))/4.*0.5;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+vec2(1.0*texelSize.x,-1.0*texelSize.y))/4.*0.5;
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//0.25
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gl_FragData[0] += texture2D(colortex5,quarterResTC-2.0*vec2(texelSize.x,0.0))/2.*0.125;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+2.0*vec2(0.0,texelSize.y))/2.*0.125;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+2.0*vec2(0,-texelSize.y))/2*0.125;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+2.0*vec2(-texelSize.x,0.0))/2*0.125;
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//0.125
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gl_FragData[0] += texture2D(colortex5,quarterResTC-2.0*vec2(texelSize.x,texelSize.y))/4.*0.125;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+2.0*vec2(texelSize.x,texelSize.y))/4.*0.125;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+vec2(-2.0*texelSize.x,2.0*texelSize.y))/4.*0.125;
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gl_FragData[0] += texture2D(colortex5,quarterResTC+vec2(2.0*texelSize.x,-2.0*texelSize.y))/4.*0.125;
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//0.125
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gl_FragData[0] += texture2D(colortex5,quarterResTC)*0.125;
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gl_FragData[0].rgb = clamp(gl_FragData[0].rgb,0.0,65000.);
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if (quarterResTC.x > 1.0 - 3.5*texelSize.x || quarterResTC.y > 1.0 -3.5*texelSize.y || quarterResTC.x < 3.5*texelSize.x || quarterResTC.y < 3.5*texelSize.y) gl_FragData[0].rgb = vec3(0.0);
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}
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