@babylonjs/core/ShadersWGSL/ShadersInclude/bumpFragmentFunctions.js

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// Do not edit.
import { ShaderStore } from "../../Engines/shaderStore.js";
import "./samplerFragmentDeclaration.js";
const name = "bumpFragmentFunctions";
const shader = `#if defined(BUMP)
#include<samplerFragmentDeclaration>(_DEFINENAME_,BUMP,_VARYINGNAME_,Bump,_SAMPLERNAME_,bump)
#endif
#if defined(DETAIL)
#include<samplerFragmentDeclaration>(_DEFINENAME_,DETAIL,_VARYINGNAME_,Detail,_SAMPLERNAME_,detail)
#endif
#if defined(BUMP) && defined(PARALLAX)
const minSamples: f32=4.;const maxSamples: f32=15.;const iMaxSamples: i32=15;fn parallaxOcclusion(vViewDirCoT: vec3f,vNormalCoT: vec3f,texCoord: vec2f,parallaxScale: f32)->vec2f {var parallaxLimit: f32=length(vViewDirCoT.xy)/vViewDirCoT.z;parallaxLimit*=parallaxScale;var vOffsetDir: vec2f=normalize(vViewDirCoT.xy);var vMaxOffset: vec2f=vOffsetDir*parallaxLimit;var numSamples: f32=maxSamples+(dot(vViewDirCoT,vNormalCoT)*(minSamples-maxSamples));var stepSize: f32=1.0/numSamples;var currRayHeight: f32=1.0;var vCurrOffset: vec2f= vec2f(0,0);var vLastOffset: vec2f= vec2f(0,0);var lastSampledHeight: f32=1.0;var currSampledHeight: f32=1.0;var keepWorking: bool=true;for (var i: i32=0; i<iMaxSamples; i++)
{currSampledHeight=textureSample(bumpSampler,bumpSamplerSampler,texCoord+vCurrOffset).w;if (!keepWorking)
{}
else if (currSampledHeight>currRayHeight)
{var delta1: f32=currSampledHeight-currRayHeight;var delta2: f32=(currRayHeight+stepSize)-lastSampledHeight;var ratio: f32=delta1/(delta1+delta2);vCurrOffset=(ratio)* vLastOffset+(1.0-ratio)*vCurrOffset;keepWorking=false;}
else
{currRayHeight-=stepSize;vLastOffset=vCurrOffset;
#ifdef PARALLAX_RHS
vCurrOffset-=stepSize*vMaxOffset;
#else
vCurrOffset+=stepSize*vMaxOffset;
#endif
lastSampledHeight=currSampledHeight;}}
return vCurrOffset;}
fn parallaxOffset(viewDir: vec3f,heightScale: f32)->vec2f
{var height: f32=textureSample(bumpSampler,bumpSamplerSampler,fragmentInputs.vBumpUV).w;var texCoordOffset: vec2f=heightScale*viewDir.xy*height;
#ifdef PARALLAX_RHS
return texCoordOffset;
#else
return -texCoordOffset;
#endif
}
#endif
`;
// Sideeffect
if (!ShaderStore.IncludesShadersStoreWGSL[name]) {
    ShaderStore.IncludesShadersStoreWGSL[name] = shader;
}
/** @internal */
export const bumpFragmentFunctionsWGSL = { name, shader };
//# sourceMappingURL=bumpFragmentFunctions.js.map