@babylonjs/viewer/dist/chunks/ssao2.fragment-BLOBpjqa.esm.min.js

The Babylon Viewer aims to simplify a specific but common Babylon.js use case: loading, viewing, and interacting with a 3D model.

import{S as e}from"./index-BPURObVq.esm.min.js";const t="ssao2PixelShader",o="precision highp float;uniform sampler2D textureSampler;varying vec2 vUV;\n#ifdef SSAO\nfloat scales[16]=float[16](\n0.1,\n0.11406250000000001,\n0.131640625,\n0.15625,\n0.187890625,\n0.2265625,\n0.272265625,\n0.325,\n0.384765625,\n0.4515625,\n0.525390625,\n0.60625,\n0.694140625,\n0.7890625,\n0.891015625,\n1.0\n);uniform float near;uniform float radius;uniform sampler2D depthSampler;uniform sampler2D randomSampler;uniform sampler2D normalSampler;uniform float randTextureTiles;uniform float samplesFactor;uniform vec3 sampleSphere[SAMPLES];uniform float totalStrength;uniform float base;\n#ifdef ORTHOGRAPHIC_CAMERA\nuniform vec4 viewport;\n#else\nuniform float xViewport;uniform float yViewport;\n#endif\nuniform mat3 depthProjection;uniform float maxZ;uniform float minZAspect;uniform vec2 texelSize;uniform mat4 projection;\n#ifdef NORMAL_WORLDSPACE\nuniform mat3 normalWorldToView;\n#endif\nvoid main()\n{vec3 random=textureLod(randomSampler,vUV*randTextureTiles,0.0).rgb;float depth=textureLod(depthSampler,vUV,0.0).r;float depthSign=sign(depth);depth=depth*depthSign;vec3 normal=normalize(textureLod(normalSampler,vUV,0.0).rgb);\n#ifdef NORMAL_WORLDSPACE\nnormal=normalize(normalWorldToView*normal);\n#endif\nfloat occlusion=0.0;float correctedRadius=min(radius,minZAspect*depth/near);\n#ifdef ORTHOGRAPHIC_CAMERA\nvec3 vViewRay=vec3(mix(viewport.x,viewport.y,vUV.x),mix(viewport.z,viewport.w,vUV.y),depthSign);\n#else\nvec3 vViewRay=vec3((vUV.x*2.0-1.0)*xViewport,(vUV.y*2.0-1.0)*yViewport,depthSign);\n#endif\nvec3 vDepthFactor=depthProjection*vec3(1.0,1.0,depth);vec3 origin=vViewRay*vDepthFactor;vec3 rvec=random*2.0-1.0;rvec.z=0.0;float dotProduct=dot(rvec,normal);rvec=1.0-abs(dotProduct)>1e-2 ? rvec : vec3(-rvec.y,0.0,rvec.x);vec3 tangent=normalize(rvec-normal*dot(rvec,normal));vec3 bitangent=cross(normal,tangent);mat3 tbn=mat3(tangent,bitangent,normal);float difference;for (int i=0; i<SAMPLES; ++i) {vec3 samplePosition=scales[(i+int(random.x*16.0)) % 16]*tbn*sampleSphere[(i+int(random.y*16.0)) % 16];samplePosition=samplePosition*correctedRadius+origin;vec4 offset=vec4(samplePosition,1.0);offset=projection*offset;offset.xyz/=offset.w;offset.xy=offset.xy*0.5+0.5;if (offset.x<0.0 || offset.y<0.0 || offset.x>1.0 || offset.y>1.0) {continue;}\nfloat sampleDepth=abs(textureLod(depthSampler,offset.xy,0.0).r);difference=depthSign*samplePosition.z-sampleDepth;float rangeCheck=1.0-smoothstep(correctedRadius*0.5,correctedRadius,difference);occlusion+=step(EPSILON,difference)*rangeCheck;}\nocclusion=occlusion*(1.0-smoothstep(maxZ*0.75,maxZ,depth));float ao=1.0-totalStrength*occlusion*samplesFactor;float result=clamp(ao+base,0.0,1.0);gl_FragColor=vec4(vec3(result),1.0);}\n#endif\n#ifdef BLUR\nuniform float outSize;uniform float soften;uniform float tolerance;uniform int samples;\n#ifndef BLUR_BYPASS\nuniform sampler2D depthSampler;\n#ifdef BLUR_LEGACY\n#define inline\nfloat blur13Bilateral(sampler2D image,vec2 uv,vec2 step) {float result=0.0;vec2 off1=vec2(1.411764705882353)*step;vec2 off2=vec2(3.2941176470588234)*step;vec2 off3=vec2(5.176470588235294)*step;float compareDepth=abs(textureLod(depthSampler,uv,0.0).r);float sampleDepth;float weight;float weightSum=30.0;result+=textureLod(image,uv,0.0).r*30.0;sampleDepth=abs(textureLod(depthSampler,uv+off1,0.0).r);weight=clamp(1.0/( 0.003+abs(compareDepth-sampleDepth)),0.0,30.0);weightSum+= weight;result+=textureLod(image,uv+off1,0.0).r*weight;sampleDepth=abs(textureLod(depthSampler,uv-off1,0.0).r);weight=clamp(1.0/( 0.003+abs(compareDepth-sampleDepth)),0.0,30.0);weightSum+= weight;result+=textureLod(image,uv-off1,0.0).r*weight;sampleDepth=abs(textureLod(depthSampler,uv+off2,0.0).r);weight=clamp(1.0/( 0.003+abs(compareDepth-sampleDepth)),0.0,30.0);weightSum+=weight;result+=textureLod(image,uv+off2,0.0).r*weight;sampleDepth=abs(textureLod(depthSampler,uv-off2,0.0).r);weight=clamp(1.0/( 0.003+abs(compareDepth-sampleDepth)),0.0,30.0);weightSum+=weight;result+=textureLod(image,uv-off2,0.0).r*weight;sampleDepth=abs(textureLod(depthSampler,uv+off3,0.0).r);weight=clamp(1.0/( 0.003+abs(compareDepth-sampleDepth)),0.0,30.0);weightSum+=weight;result+=textureLod(image,uv+off3,0.0).r*weight;sampleDepth=abs(textureLod(depthSampler,uv-off3,0.0).r);weight=clamp(1.0/( 0.003+abs(compareDepth-sampleDepth)),0.0,30.0);weightSum+=weight;result+=textureLod(image,uv-off3,0.0).r*weight;return result/weightSum;}\n#endif\n#endif\nvoid main()\n{float result=0.0;\n#ifdef BLUR_BYPASS\nresult=textureLod(textureSampler,vUV,0.0).r;\n#else\n#ifdef BLUR_H\nvec2 step=vec2(1.0/outSize,0.0);\n#else\nvec2 step=vec2(0.0,1.0/outSize);\n#endif\n#ifdef BLUR_LEGACY\nresult=blur13Bilateral(textureSampler,vUV,step);\n#else\nfloat compareDepth=abs(textureLod(depthSampler,vUV,0.0).r);float weightSum=0.0;for (int i=-samples; i<samples; i+=2)\n{vec2 samplePos=vUV+step*(float(i)+0.5);float sampleDepth=abs(textureLod(depthSampler,samplePos,0.0).r);float falloff=smoothstep(0.0,\nfloat(samples),\nfloat(samples)-abs(float(i))*soften);float minDivider=tolerance*0.5+0.003;float weight=falloff/( minDivider+abs(compareDepth-sampleDepth));result+=textureLod(textureSampler,samplePos,0.0).r*weight;weightSum+=weight;}\nresult/=weightSum;\n#endif\n#endif\ngl_FragColor.rgb=vec3(result);gl_FragColor.a=1.0;}\n#endif\n";e.ShadersStore[t]||(e.ShadersStore[t]=o);const r={name:t,shader:o};export{r as ssao2PixelShader};
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