// Do not edit.
import { ShaderStore } from "../Engines/shaderStore.js";
const name = "fluidRenderingBilateralBlurPixelShader";
const shader = `uniform sampler2D textureSampler;uniform int maxFilterSize;uniform vec2 blurDir;uniform float projectedParticleConstant;uniform float depthThreshold;varying vec2 vUV;void main(void) {float depth=textureLod(textureSampler,vUV,0.).x;if (depth>=1e6 || depth<=0.) {glFragColor=vec4(vec3(depth),1.);return;}
int filterSize=min(maxFilterSize,int(ceil(projectedParticleConstant/depth)));float sigma=float(filterSize)/3.0;float two_sigma2=2.0*sigma*sigma;float sigmaDepth=depthThreshold/3.0;float two_sigmaDepth2=2.0*sigmaDepth*sigmaDepth;float sum=0.;float wsum=0.;float sumVel=0.;for (int x=-filterSize; x<=filterSize; ++x) {vec2 coords=vec2(x);vec2 sampleDepthVel=textureLod(textureSampler,vUV+coords*blurDir,0.).rg;float r=dot(coords,coords);float w=exp(-r/two_sigma2);float rDepth=sampleDepthVel.r-depth;float wd=exp(-rDepth*rDepth/two_sigmaDepth2);sum+=sampleDepthVel.r*w*wd;sumVel+=sampleDepthVel.g*w*wd;wsum+=w*wd;}
glFragColor=vec4(sum/wsum,sumVel/wsum,0.,1.);}
`;
// Sideeffect
ShaderStore.ShadersStore[name] = shader;
/** @internal */
export const fluidRenderingBilateralBlurPixelShader = { name, shader };
//# sourceMappingURL=fluidRenderingBilateralBlur.fragment.js.map