class Blur

@:directlyUsed@:src({ @param var inverseProj:Mat4; @param var texture:Sampler2D; @param var depthTexture:Sampler2D; @param @const var Quality:Int; @param @const var isDepth:Bool; @param var values:Array<Float,Quality>; @param var offsets:Array<Float,Quality>; @param var pixel:Vec2; @const var hasFixedColor:Bool; @const var smoothFixedColor:Bool; @param var fixedColor:Vec4; @param @const var isDepthDependant:Bool; @param var depthThreshold:Float = 1.0; @param var depthThresholdMaxDist:Float = 0.0; @param @const var isCube:Bool; @param var cubeTexture:SamplerCube; @param var cubeDir:Mat3; function scaleThreshold(z:Float):Float { var t = depthThreshold; if (depthThresholdMaxDist > 0.0) t *= 1.0 + max(z - depthThresholdMaxDist, 0.0); return t; }; function fragment() { if (isDepthDependant) { var dimensions = texture.size(); var invDimensions = 1.0 / dimensions; var coord = fragCoord.xy; var fragUV = coord.xy * invDimensions; var p = getViewPosition(fragUV); var minZ = p.z; var c = texture.get(fragUV); var color = vec4(0, 0, 0, 0); var isEdge = false; @unroll for (i in -Quality ... Quality + 1) { var curCoord = floor(coord + (pixel * dimensions) * vec2(1.0) * i) + vec2(0.5); var nearestUV = curCoord * invDimensions; var pcur = getViewPosition(nearestUV); var d = abs(pcur.z - p.z); isEdge = isEdge || (d > scaleThreshold(min(pcur.z, p.z))); }; @unroll for (i in -Quality + 1 ... Quality) { var curCoord = floor(coord + (pixel * dimensions) * offsets[i < 0 ? -i : i] * i) + vec2(0.5); var nearestUV = curCoord * invDimensions; var uv = fragUV + pixel * offsets[i < 0 ? -i : i] * i; var ccur = texture.get((isEdge) ? nearestUV : uv); var pcur = getViewPosition(nearestUV); var d = abs(pcur.z - p.z); c = (d > scaleThreshold(min(pcur.z, p.z))) ? c : ccur; color += c * values[i < 0 ? -i : i]; }; pixelColor = color; } else if (isDepth) { var val = 0.; @unroll for (i in -Quality + 1 ... Quality) { if (isCube) val += unpack(cubeTexture.get(vec3((input.uv + pixel * offsets[i < 0 ? -i : i] * i) * 2.0 - 1.0, 1) * cubeDir)) * values[i < 0 ? -i : i] else val += unpack(texture.get(input.uv + pixel * offsets[i < 0 ? -i : i] * i)) * values[i < 0 ? -i : i]; }; pixelColor = pack(val.min(0.9999999)); } else { var color = vec4(0, 0, 0, 0); @unroll for (i in -Quality + 1 ... Quality) { if (isCube) color += cubeTexture.get(vec3((input.uv + pixel * offsets[i < 0 ? -i : i] * i) * 2.0 - 1.0, 1) * cubeDir) * values[i < 0 ? -i : i] else color += texture.get(input.uv + pixel * offsets[i < 0 ? -i : i] * i) * values[i < 0 ? -i : i]; }; pixelColor = color; }; if (hasFixedColor) { if (smoothFixedColor) pixelColor.a *= fixedColor.a else pixelColor.a = fixedColor.a * float(pixelColor.a > 0); pixelColor.rgb = fixedColor.rgb * pixelColor.a; }; }; function getViewPosition(uv:Vec2):Vec3 { var depth = depthTexture.get(uv).r; var temp = vec4(uvToScreen(uv), depth, 1) * inverseProj; var originWS = temp.xyz / temp.w; return originWS; }; })@:build(hxsl.Macros.buildShader())@:autoBuild(hxsl.Macros.buildShader())