37 lines
1.1 KiB
GLSL
37 lines
1.1 KiB
GLSL
#version 430 core
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layout(location = 0) out vec4 color_out;
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layout(binding = 0) uniform sampler2D framebuffer;
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layout(binding = 1) uniform sampler2D depthbuffer;
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uniform uint windowWidth;
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uniform uint windowHeight;
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uniform float time;
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const float chomatic_abberation_r = 0.0;
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const float chomatic_abberation_g = 0.025;
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const float chomatic_abberation_b = 0.05;
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void main() {
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vec2 dx = vec2(1,0) * 1.0/windowWidth;
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vec2 dy = vec2(0,1) * 1.0/windowHeight;
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vec2 UV = gl_FragCoord.xy / vec2(windowWidth, windowHeight);
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float z = pow(texture(depthbuffer, UV).r , 0x800);
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z = abs(z*2-1)*1.2;
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int radius = int(5*z);
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vec3 color = vec3(0);
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for (int x = -radius; x <= radius; x++)
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for (int y = -radius; y <= radius; y++){
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vec2 p = UV + x*dx + y*dy;
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color.r += texture(framebuffer, (p-0.5)*(1+z*chomatic_abberation_r) + 0.5).r;
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color.g += texture(framebuffer, (p-0.5)*(1+z*chomatic_abberation_g) + 0.5).g;
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color.b += texture(framebuffer, (p-0.5)*(1+z*chomatic_abberation_b) + 0.5).b;
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}
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color /= pow(2*radius+1, 2);
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color_out = vec4(color * (1-pow(length((UV-0.5)*1.2), 3)), 1.0); // vignette
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}
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