59 lines
1.9 KiB
GLSL
59 lines
1.9 KiB
GLSL
// Exclusive to SSAO for now
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#version 450
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#ifdef GL_ES
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precision mediump float;
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#endif
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#include "../compiled.glsl"
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#include "../std/gbuffer.glsl"
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uniform sampler2D tex;
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uniform sampler2D gbuffer0;
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uniform vec2 dirInv; // texStep
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in vec2 texCoord;
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out vec4 fragColor;
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const float blurWeights[5] = float[] (0.227027, 0.1945946, 0.1216216, 0.054054, 0.016216);
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// const float blurWeights[10] = float[] (0.132572, 0.125472, 0.106373, 0.08078, 0.05495, 0.033482, 0.018275, 0.008934, 0.003912, 0.001535);
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const float discardThreshold = 0.95;
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float doBlur(const float blurWeight, const int pos, const vec3 nor, const vec2 texCoord) {
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const float posadd = pos + 0.5;
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vec3 nor2 = getNor(texture(gbuffer0, texCoord + pos * dirInv).rg);
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float influenceFactor = step(discardThreshold, dot(nor2, nor));
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vec4 col = texture(tex, texCoord + posadd * dirInv);
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fragColor += col * blurWeight * influenceFactor;
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float weight = blurWeight * influenceFactor;
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nor2 = getNor(texture(gbuffer0, texCoord - pos * dirInv).rg);
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influenceFactor = step(discardThreshold, dot(nor2, nor));
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col = texture(tex, texCoord - posadd * dirInv);
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fragColor += col * blurWeight * influenceFactor;
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weight += blurWeight * influenceFactor;
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return weight;
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}
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void main() {
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vec3 nor = getNor(texture(gbuffer0, texCoord).rg);
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fragColor = texture(tex, texCoord) * blurWeights[0];
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float weight = blurWeights[0];
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// for (int i = 1; i < 10; i++) {
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weight += doBlur(blurWeights[1], 1, nor, texCoord);
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weight += doBlur(blurWeights[2], 2, nor, texCoord);
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weight += doBlur(blurWeights[3], 3, nor, texCoord);
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weight += doBlur(blurWeights[4], 4, nor, texCoord);
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// weight += doBlur(blurWeights[5], 5, nor, texCoord);
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// weight += doBlur(blurWeights[6], 6, nor, texCoord);
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// weight += doBlur(blurWeights[7], 7, nor, texCoord);
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// weight += doBlur(blurWeights[8], 8, nor, texCoord);
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// weight += doBlur(blurWeights[9], 9, nor, texCoord);
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// }
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fragColor = vec4(fragColor / weight);
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} |