playcanvas

Version:

PlayCanvas WebGL game engine

14 lines (12 loc) • 514 B

JavaScript

var lightSpecularBlinnPS = `
fn calcLightSpecular(gloss: f32, worldNormal: vec3f, h: vec3f) -> f32 {
	let nh: f32 = max( dot( h, worldNormal ), 0.0 );
	var specPow: f32 = exp2(gloss * 11.0);
	specPow = max(specPow, 0.0001);
	return pow(nh, specPow) * (specPow + 2.0) / 8.0;
}
fn getLightSpecular(h: vec3f, reflDir: vec3f, worldNormal: vec3f, viewDir: vec3f, lightDirNorm: vec3f, gloss: f32, tbn: mat3x3f) -> f32 {
	return calcLightSpecular(gloss, worldNormal, h);
}
`;

export { lightSpecularBlinnPS as default };