55 lines
1.2 KiB
GLSL
55 lines
1.2 KiB
GLSL
#version 450
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#include "compiled.inc"
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#include "std/gbuffer.glsl"
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uniform sampler2D probeTex;
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uniform sampler2D gbufferD;
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uniform sampler2D gbuffer0;
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uniform sampler2D gbuffer1;
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uniform mat4 probeVP;
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uniform mat4 invVP;
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uniform vec3 proben;
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in vec4 wvpposition;
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out vec4 fragColor;
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void main() {
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vec2 texCoord = wvpposition.xy / wvpposition.w;
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texCoord = texCoord * 0.5 + 0.5;
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#ifdef _InvY
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texCoord.y = 1.0 - texCoord.y;
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#endif
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vec4 g0 = textureLod(gbuffer0, texCoord, 0.0); // Normal.xy, roughness, metallic/matid
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float roughness = g0.b;
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if (roughness > 0.95) {
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fragColor.rgb = vec3(0.0);
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return;
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}
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float spec = fract(textureLod(gbuffer1, texCoord, 0.0).a);
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if (spec == 0.0) {
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fragColor.rgb = vec3(0.0);
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return;
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}
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float depth = textureLod(gbufferD, texCoord, 0.0).r * 2.0 - 1.0;
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vec3 wp = getPos2(invVP, depth, texCoord);
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vec4 pp = probeVP * vec4(wp.xyz, 1.0);
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vec2 tc = (pp.xy / pp.w) * 0.5 + 0.5;
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#ifdef _InvY
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tc.y = 1.0 - tc.y;
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#endif
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vec2 enc = g0.rg;
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vec3 n;
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n.z = 1.0 - abs(enc.x) - abs(enc.y);
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n.xy = n.z >= 0.0 ? enc.xy : octahedronWrap(enc.xy);
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n = normalize(n);
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float intensity = clamp((1.0 - roughness) * dot(n, proben), 0.0, 1.0);
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fragColor.rgb = texture(probeTex, tc).rgb * intensity;
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}
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