class PanoramaToCube

import h3d.scene.pbr.Environment

@:directlyUsed@:src({ @param var texture:Sampler2D; @param var faceMatrix:Mat3; @param var threshold:Float; @param var aboveThresholdScale:Float; function getNormal():Vec3 { var d = input.uv * 2. - 1.; return (vec3(d, 1.) * faceMatrix).normalize(); }; function fragment() { var n = getNormal(); var uv = vec2(atan(n.y, n.x), asin(-n.z)); uv *= vec2(0.1591, 0.3183); uv += 0.5; pixelColor = texture.get(uv); if (max(max(pixelColor.r, pixelColor.g), pixelColor.b) > threshold) pixelColor *= aboveThresholdScale; }; })@:build(hxsl.Macros.buildShader())@:autoBuild(hxsl.Macros.buildShader())