26 lines
789 B
JavaScript
26 lines
789 B
JavaScript
|
import ShaderNode from '../shadernode/ShaderNode.js';
|
||
|
|
import { add, max, min, abs, dFdx, dFdy, normalGeometry } from '../shadernode/ShaderNodeElements.js';
|
||
|
|
|
||
|
|
export const getGeometryRoughness = new ShaderNode( () => {
|
||
|
|
|
||
|
|
const dxy = max( abs( dFdx( normalGeometry ) ), abs( dFdy( normalGeometry ) ) );
|
||
|
|
const geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );
|
||
|
|
|
||
|
|
return geometryRoughness;
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
export const getRoughness = new ShaderNode( ( inputs ) => {
|
||
|
|
|
||
|
|
const { roughness } = inputs;
|
||
|
|
|
||
|
|
const geometryRoughness = getGeometryRoughness();
|
||
|
|
|
||
|
|
let roughnessFactor = max( roughness, 0.0525 ); // 0.0525 corresponds to the base mip of a 256 cubemap.
|
||
|
|
roughnessFactor = add( roughnessFactor, geometryRoughness );
|
||
|
|
roughnessFactor = min( roughnessFactor, 1.0 );
|
||
|
|
|
||
|
|
return roughnessFactor;
|
||
|
|
|
||
|
|
} );
|