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class BDRF

package h3d.shader.pbr

extends Shader

@:src({ function getAnisotropicRoughness(roughness:Float, anisotropy:Float):Vec2 { var at = max(roughness * (1.0 + anisotropy), 0.001); var ab = max(roughness * (1.0 - anisotropy), 0.001); return vec2(at, ab); }; function smithGGXCorrelatedAnisotropic(at:Float, ab:Float, TdV:Float, BdV:Float, TdL:Float, BdL:Float, NdV:Float, NdL:Float):Float { var lambdaV = NdL * length(vec3(at * TdV, ab * BdV, NdV)); var lambdaL = NdV * length(vec3(at * TdL, ab * BdL, NdL)); var v = 0.5 / (lambdaV + lambdaL); return saturate(v); }; function normalDistributionGGXAnisotropic(at:Float, ab:Float, NdH:Float, TdH:Float, BdH:Float, roughness:Float, anisotropy:Float):Float { var a2 = at * ab; var v = vec3(ab * TdH, at * BdH, a2 * NdH); var v2 = dot(v, v); var w2 = a2 / v2; return a2 * w2 * w2 * (1.0 / PI); }; function normalDistributionGGX(NdH:Float, roughness:Float):Float { var alpha = roughness * roughness; var alpha2 = alpha * alpha; var denom = NdH * NdH * (alpha2 - 1.) + 1; return alpha2 / (PI * denom * denom); }; function geometrySchlickGGX(NdV:Float, NdL:Float, roughness:Float):Float { var k = (roughness + 1); k *= k; k *= 0.125; return (1 / (NdV * (1 - k) + k)) * (1 / (NdL * (1 - k) + k)) * 0.25; }; function fresnelSchlick(VdH:Float, F0:Vec3):Vec3 { return F0 + (1. - F0) * exp2((-5.55473 * VdH - 6.98316) * VdH); }; })@:build(hxsl.Macros.buildShader())@:autoBuild(hxsl.Macros.buildShader())

Constructor

new()

Methods

Inherited Variables

Defined by Shader

@:value(0)read onlypriority:Int = 0

Inherited Methods

Defined by Shader

clone():Shader

setPriority(v:Int):Void

Shader priority should only be changed before the shader is added to a material.

toString():String