playcanvas/build/playcanvas.dbg/src/scene/shader-lib/glsl/chunks/standard/frag/parallax.js

Open-source WebGL/WebGPU 3D engine for the web

var parallax_default = (
  /* glsl */
  `
uniform float material_heightMapFactor;

void getParallax() {
    float parallaxScale = material_heightMapFactor;

    float height = texture2DBias({STD_HEIGHT_TEXTURE_NAME}, {STD_HEIGHT_TEXTURE_UV}, textureBias).{STD_HEIGHT_TEXTURE_CHANNEL};
    height = height * parallaxScale - parallaxScale * 0.5;
    vec3 viewDirT = dViewDirW * dTBN;

    viewDirT.z += 0.42;
    dUvOffset = height * (viewDirT.xy / viewDirT.z);
}
`
);
export {
  parallax_default as default
};