// Do not edit.
import { ShaderStore } from "../Engines/shaderStore.js";
const name = "ssaoPixelShader";
const shader = `uniform sampler2D textureSampler;varying vec2 vUV;
#ifdef SSAO
uniform sampler2D randomSampler;uniform float randTextureTiles;uniform float samplesFactor;uniform vec3 sampleSphere[SAMPLES];uniform float totalStrength;uniform float radius;uniform float area;uniform float fallOff;uniform float base;vec3 normalFromDepth(float depth,vec2 coords)
{vec2 offset1=vec2(0.0,radius);vec2 offset2=vec2(radius,0.0);float depth1=texture2D(textureSampler,coords+offset1).r;float depth2=texture2D(textureSampler,coords+offset2).r;vec3 p1=vec3(offset1,depth1-depth);vec3 p2=vec3(offset2,depth2-depth);vec3 normal=cross(p1,p2);normal.z=-normal.z;return normalize(normal);}
void main()
{vec3 random=normalize(texture2D(randomSampler,vUV*randTextureTiles).rgb);float depth=texture2D(textureSampler,vUV).r;vec3 position=vec3(vUV,depth);vec3 normal=normalFromDepth(depth,vUV);float radiusDepth=radius/depth;float occlusion=0.0;vec3 ray;vec3 hemiRay;float occlusionDepth;float difference;for (int i=0; i<SAMPLES; i++)
{ray=radiusDepth*reflect(sampleSphere[i],random);hemiRay=position+sign(dot(ray,normal))*ray;occlusionDepth=texture2D(textureSampler,clamp(hemiRay.xy,vec2(0.001,0.001),vec2(0.999,0.999))).r;difference=depth-occlusionDepth;occlusion+=step(fallOff,difference)*(1.0-smoothstep(fallOff,area,difference));}
float ao=1.0-totalStrength*occlusion*samplesFactor;float result=clamp(ao+base,0.0,1.0);gl_FragColor.r=result;gl_FragColor.g=result;gl_FragColor.b=result;gl_FragColor.a=1.0;}
#endif
`;
// Sideeffect
ShaderStore.ShadersStore[name] = shader;
/** @internal */
export const ssaoPixelShader = { name, shader };
//# sourceMappingURL=ssao.fragment.js.map