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class Parallax

package h3d.shader

extends Shader

@:directlyUsed@:src({ @param var amount:Float; @param var heightMap:Channel; @:import BaseMesh; @const var minLayers:Int; @const var maxLayers:Int; var vertexTransformedNormal:Vec3; var transformedTangent:Vec4; var calculatedUV:Vec2; function vertex() { vertexTransformedNormal = transformedNormal; }; function fragment() { var viewWS = (camera.position - transformedPosition).normalize(); var viewNS:Vec3; { var n = vertexTransformedNormal.normalize(); var tanX = transformedTangent.xyz.normalize(); var tanY = n.cross(tanX); viewNS = vec3(viewWS.dot(tanX), viewWS.dot(tanY), viewWS.dot(n)).normalize(); }; if (maxLayers == 0) calculatedUV += viewNS.xy * heightMap.get(calculatedUV) * amount else { var numLayers = mix(float(maxLayers), float(minLayers), abs(viewNS.z)); var layerDepth = 1 / numLayers; var curLayerDepth = 0.; var delta = (viewNS.xy / viewNS.z) * amount / numLayers; var curUV = calculatedUV; var curDepth = heightMap.getLod(curUV, 0.); while (curLayerDepth < curDepth) { curUV += delta; curDepth = heightMap.getLod(curUV, 0.); curLayerDepth += layerDepth; }; var prevUV = curUV - delta; var after = curDepth - curLayerDepth; var before = heightMap.get(prevUV) - curLayerDepth + layerDepth; calculatedUV = mix(curUV, prevUV, after / (after - before)); }; }; })@:build(hxsl.Macros.buildShader())@:autoBuild(hxsl.Macros.buildShader())

Static variables

@:value(24)staticfinalread onlyMAX_LAYERS:Int = 24

@:value(6)staticfinalread onlyMIN_LAYERS:Int = 6

Constructor

new()

Variables

amount:Float

heightMap:ChannelTextureType

heightMapChannel:Channel

maxLayers:Int

minLayers:Int

Methods

Inherited Variables

Defined by Shader

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

Inherited Methods

Defined by Shader

setPriority(v:Int):Void

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

toString():String