Eye-Dome-Lighting

[taontech]

Shaders:

Potree.Shaders["edl.fs"] = [
 "// ",
 "// adapted from the EDL shader code from Christian Boucheny in cloud compare:",
 "// https://github.com/cloudcompare/trunk/tree/master/plugins/qEDL/shaders/EDL",
 "//",
 "",
 "#define NEIGHBOUR_COUNT 4",
 "",
 "uniform float screenWidth;",
 "uniform float screenHeight;",
 "uniform vec2 neighbours[NEIGHBOUR_COUNT];",
 "uniform float edlStrength;",
 "uniform float radius;",
 "uniform float opacity;",
 "",
 "uniform sampler2D colorMap;",
 "",
 "varying vec2 vUv;",
 "",
 "const float infinity = 1.0 / 0.0;",
 "",
 "float response(float depth){",
 "  vec2 uvRadius = radius / vec2(screenWidth, screenHeight);",
 "  ",
 "  float sum = 0.0;",
 "  ",
 "  for(int i = 0; i < NEIGHBOUR_COUNT; i++){",
 "      vec2 uvNeighbor = vUv + uvRadius * neighbours[i];",
 "      ",
 "      float neighbourDepth = texture2D(colorMap, uvNeighbor).a;",
 "      ",
 "      if(neighbourDepth == 0.0){",
 "          neighbourDepth = infinity;",
 "      }",
 "      ",
 "      sum += max(0.0, depth - neighbourDepth);",
 "  }",
 "  ",
 "  return sum / float(NEIGHBOUR_COUNT);",
 "}",
 "",
 "void main(){",
 "  vec4 color = texture2D(colorMap, vUv);",
 "  ",
 "  float depth = color.a;",
 "  if(depth == 0.0){",
 "      depth = infinity;",
 "  }",
 "  ",
 "  float res = response(depth);",
 "  float shade = exp(-res * 300.0 * edlStrength);",
 "  ",
 "  if(color.a == 0.0 && res == 0.0){",
 "      discard;",
 "  }",
 "  ",
 "  gl_FragColor = vec4(color.rgb * shade, opacity);",
 "}",
 "",
].join("\n");

[taontech]

尝试用metal实现edl

[taontech]

Done