219 lines
4.8 KiB
GLSL
219 lines
4.8 KiB
GLSL
#version 450
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#include "compiled.glsl"
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#include "std/gbuffer.glsl"
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#include "std/math.glsl"
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#include "std/brdf.glsl"
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#ifdef _Irr
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#include "std/shirr.glsl"
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#endif
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#ifdef _VoxelGI
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#include "std/conetrace.glsl"
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#endif
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#ifdef _VoxelAO
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#include "std/conetrace.glsl"
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#endif
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#ifdef _DFAO
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#include "std/sdf.glsl"
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#endif
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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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#ifdef _VoxelGI
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uniform sampler3D voxels;
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#endif
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#ifdef _VoxelAO
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uniform sampler3D voxels;
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#endif
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#ifdef _VoxelGITemporal
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uniform sampler3D voxelsLast;
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uniform float voxelBlend;
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#endif
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#ifdef _VoxelGICam
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uniform vec3 eyeSnap;
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#endif
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uniform float envmapStrength;
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#ifdef _Irr
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//!uniform vec4 shirr[7];
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#endif
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#ifdef _Brdf
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uniform sampler2D senvmapBrdf;
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#endif
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#ifdef _Rad
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uniform sampler2D senvmapRadiance;
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uniform int envmapNumMipmaps;
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#endif
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#ifdef _EnvCol
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uniform vec3 backgroundCol;
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#endif
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#ifdef _SSAO
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uniform sampler2D ssaotex;
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#endif
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#ifdef _IndPos
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uniform vec2 cameraProj;
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uniform vec3 eye;
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uniform vec3 eyeLook;
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#endif
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#ifdef _DFAO
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//!uniform sampler3D sdftex;
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#endif
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in vec2 texCoord;
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#ifdef _IndPos
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in vec3 viewRay;
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#endif
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out vec4 fragColor;
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void main() {
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vec4 g0 = texture(gbuffer0, texCoord); // Normal.xy, metallic/roughness, depth
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vec3 n;
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n.z = 1.0 - abs(g0.x) - abs(g0.y);
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n.xy = n.z >= 0.0 ? g0.xy : octahedronWrap(g0.xy);
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n = normalize(n);
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vec2 metrough = unpackFloat(g0.b);
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vec4 g1 = texture(gbuffer1, texCoord); // Basecolor.rgb, spec/occ
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vec2 occspec = unpackFloat2(g1.a);
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vec3 albedo = surfaceAlbedo(g1.rgb, metrough.x); // g1.rgb - basecolor
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#ifdef _IndPos
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// #ifdef _InvY // D3D
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// float depth = texture(gbufferD, texCoord).r * 2.0 - 1.0;
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// #else
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float depth = (1.0 - g0.a) * 2.0 - 1.0;
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// #endif
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vec3 p = getPos(eye, eyeLook, viewRay, depth, cameraProj);
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#endif
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#ifdef _Brdf
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vec3 v = normalize(eye - p.xyz);
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float dotNV = max(dot(n, v), 0.0);
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vec3 f0 = surfaceF0(g1.rgb, metrough.x);
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vec2 envBRDF = texture(senvmapBrdf, vec2(metrough.y, 1.0 - dotNV)).xy;
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#endif
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#ifdef _VoxelGI
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#ifdef _VoxelGICam
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vec3 voxpos = (p - eyeSnap) / voxelgiHalfExtents;
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#else
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vec3 voxpos = p / voxelgiHalfExtents;
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#endif
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#ifdef _VoxelGITemporal
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vec4 indirectDiffuse = traceDiffuse(voxpos, n, voxels) * voxelBlend + traceDiffuse(voxpos, n, voxelsLast) * (1.0 - voxelBlend);
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#else
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vec4 indirectDiffuse = traceDiffuse(voxpos, n, voxels);
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#endif
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fragColor.rgb = indirectDiffuse.rgb * voxelgiDiff * g1.rgb;
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if (occspec.y > 0.0) {
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vec3 indirectSpecular = traceSpecular(voxels, voxpos, n, v, metrough.y);
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indirectSpecular *= f0 * envBRDF.x + envBRDF.y;
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fragColor.rgb += indirectSpecular * voxelgiSpec * occspec.y;
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}
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// if (!isInsideCube(voxpos)) fragColor = vec4(1.0); // Show bounds
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// float opacity = g2.b;
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// if (opacity < 1.0) fragColor.rgb = mix(indirectRefractiveLight(-v, n, vec3(1.0), opacity, voxpos), fragColor.rgb, opacity);
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#endif
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// Envmap
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#ifdef _Irr
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vec3 envl = shIrradiance(n);
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#ifdef _EnvTex
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envl /= PI;
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#endif
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#else
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vec3 envl = vec3(1.0);
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#endif
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#ifdef _Rad
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vec3 reflectionWorld = reflect(-v, n);
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float lod = getMipFromRoughness(metrough.y, envmapNumMipmaps);
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vec3 prefilteredColor = textureLod(senvmapRadiance, envMapEquirect(reflectionWorld), lod).rgb;
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#endif
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#ifdef _EnvLDR
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envl.rgb = pow(envl.rgb, vec3(2.2));
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#ifdef _Rad
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prefilteredColor = pow(prefilteredColor, vec3(2.2));
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#endif
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#endif
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envl.rgb *= albedo;
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#ifdef _Rad // Indirect specular
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envl.rgb += prefilteredColor * (f0 * envBRDF.x + envBRDF.y) * 1.5 * occspec.y;
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#else
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#ifdef _EnvCol
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envl.rgb += backgroundCol * surfaceF0(g1.rgb, metrough.x); // f0
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#endif
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#endif
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#ifdef _SSS
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envl.rgb *= envmapStrength * occspec.x;
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#else
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#ifndef _VoxelGIRefract
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envl.rgb *= envmapStrength * occspec.x; // Occlusion
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#endif
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#endif
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#ifdef _DFGI
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envl.rgb = dfgi(p, n) * albedo;
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#endif
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#ifdef _VoxelAO
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#ifdef _VoxelGICam
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vec3 voxpos = (p - eyeSnap) / voxelgiHalfExtents;
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#else
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vec3 voxpos = p / voxelgiHalfExtents;
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#endif
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#ifdef _VoxelGITemporal
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envl.rgb *= 1.0 - (traceAO(voxpos, n, voxels) * voxelBlend + traceAO(voxpos, n, voxelsLast) * (1.0 - voxelBlend));
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#else
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envl.rgb *= 1.0 - traceAO(voxpos, n, voxels);
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#endif
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#endif
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#ifdef _VoxelGI
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fragColor.rgb += envl * voxelgiEnv;
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#else
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fragColor.rgb = envl;
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#endif
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#ifdef _SSAO
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#ifdef _RTGI
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fragColor.rgb *= texture(ssaotex, texCoord).rgb;
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#else
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fragColor.rgb *= texture(ssaotex, texCoord).r;
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#endif
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#endif
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#ifdef _DFAO
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fragColor.rgb *= dfao(p, n);
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#endif
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// Show voxels
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// vec3 origin = vec3(texCoord * 2.0 - 1.0, 0.99);
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// vec3 direction = vec3(0.0, 0.0, -1.0);
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// vec4 color = vec4(0.0f);
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// for(uint step = 0; step < 400 && color.a < 0.99f; ++step) {
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// vec3 point = origin + 0.005 * step * direction;
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// color += (1.0f - color.a) * textureLod(voxels, point * 0.5 + 0.5, 0);
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// }
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// fragColor.rgb += color.rgb;
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// Show SSAO
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// fragColor.rgb = texture(ssaotex, texCoord).rrr;
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}
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