Initial project import

node_modules/three-stdlib/postprocessing/RenderPixelatedPass.cjs

@@ -0,0 +1,200 @@
+"use strict";
+Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
+const THREE = require("three");
+const Pass = require("./Pass.cjs");
+class RenderPixelatedPass extends Pass.Pass {
+  constructor(resolution, pixelSize, scene, camera, options = {}) {
+    var _a, _b;
+    super();
+    this.pixelSize = pixelSize;
+    this.resolution = new THREE.Vector2();
+    this.renderResolution = new THREE.Vector2();
+    this.setSize(resolution.x, resolution.y);
+    this.fsQuad = new Pass.FullScreenQuad(this.material());
+    this.scene = scene;
+    this.camera = camera;
+    this.normalEdgeStrength = (_a = options.normalEdgeStrength) != null ? _a : 0.3;
+    this.depthEdgeStrength = (_b = options.depthEdgeStrength) != null ? _b : 0.4;
+    this.rgbRenderTarget = pixelRenderTarget(this.renderResolution, THREE.RGBAFormat, true);
+    this.normalRenderTarget = pixelRenderTarget(this.renderResolution, THREE.RGBAFormat, false);
+    this.normalMaterial = new THREE.MeshNormalMaterial();
+  }
+  dispose() {
+    this.rgbRenderTarget.dispose();
+    this.normalRenderTarget.dispose();
+    this.fsQuad.dispose();
+  }
+  setSize(width, height) {
+    var _a, _b, _c;
+    this.resolution.set(width, height);
+    this.renderResolution.set(width / this.pixelSize | 0, height / this.pixelSize | 0);
+    const { x, y } = this.renderResolution;
+    (_a = this.rgbRenderTarget) == null ? void 0 : _a.setSize(x, y);
+    (_b = this.normalRenderTarget) == null ? void 0 : _b.setSize(x, y);
+    (_c = this.fsQuad) == null ? void 0 : _c.material.uniforms.resolution.value.set(x, y, 1 / x, 1 / y);
+  }
+  setPixelSize(pixelSize) {
+    this.pixelSize = pixelSize;
+    this.setSize(this.resolution.x, this.resolution.y);
+  }
+  render(renderer, writeBuffer) {
+    const uniforms = this.fsQuad.material.uniforms;
+    uniforms.normalEdgeStrength.value = this.normalEdgeStrength;
+    uniforms.depthEdgeStrength.value = this.depthEdgeStrength;
+    renderer.setRenderTarget(this.rgbRenderTarget);
+    renderer.render(this.scene, this.camera);
+    const overrideMaterial_old = this.scene.overrideMaterial;
+    renderer.setRenderTarget(this.normalRenderTarget);
+    this.scene.overrideMaterial = this.normalMaterial;
+    renderer.render(this.scene, this.camera);
+    this.scene.overrideMaterial = overrideMaterial_old;
+    uniforms.tDiffuse.value = this.rgbRenderTarget.texture;
+    uniforms.tDepth.value = this.rgbRenderTarget.depthTexture;
+    uniforms.tNormal.value = this.normalRenderTarget.texture;
+    if (this.renderToScreen) {
+      renderer.setRenderTarget(null);
+    } else {
+      renderer.setRenderTarget(writeBuffer);
+      if (this.clear)
+        renderer.clear();
+    }
+    this.fsQuad.render(renderer);
+  }
+  material() {
+    return new THREE.ShaderMaterial({
+      uniforms: {
+        tDiffuse: { value: null },
+        tDepth: { value: null },
+        tNormal: { value: null },
+        resolution: {
+          value: new THREE.Vector4(
+            this.renderResolution.x,
+            this.renderResolution.y,
+            1 / this.renderResolution.x,
+            1 / this.renderResolution.y
+          )
+        },
+        normalEdgeStrength: { value: 0 },
+        depthEdgeStrength: { value: 0 }
+      },
+      vertexShader: `
+				varying vec2 vUv;
+
+				void main() {
+
+					vUv = uv;
+					gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+
+				}
+				`,
+      fragmentShader: `
+				uniform sampler2D tDiffuse;
+				uniform sampler2D tDepth;
+				uniform sampler2D tNormal;
+				uniform vec4 resolution;
+				uniform float normalEdgeStrength;
+				uniform float depthEdgeStrength;
+				varying vec2 vUv;
+
+				float getDepth(int x, int y) {
+
+					return texture2D( tDepth, vUv + vec2(x, y) * resolution.zw ).r;
+
+				}
+
+				vec3 getNormal(int x, int y) {
+
+					return texture2D( tNormal, vUv + vec2(x, y) * resolution.zw ).rgb * 2.0 - 1.0;
+
+				}
+
+				float depthEdgeIndicator(float depth, vec3 normal) {
+
+					float diff = 0.0;
+					diff += clamp(getDepth(1, 0) - depth, 0.0, 1.0);
+					diff += clamp(getDepth(-1, 0) - depth, 0.0, 1.0);
+					diff += clamp(getDepth(0, 1) - depth, 0.0, 1.0);
+					diff += clamp(getDepth(0, -1) - depth, 0.0, 1.0);
+					return floor(smoothstep(0.01, 0.02, diff) * 2.) / 2.;
+
+				}
+
+				float neighborNormalEdgeIndicator(int x, int y, float depth, vec3 normal) {
+
+					float depthDiff = getDepth(x, y) - depth;
+					vec3 neighborNormal = getNormal(x, y);
+					
+					// Edge pixels should yield to faces who's normals are closer to the bias normal.
+					vec3 normalEdgeBias = vec3(1., 1., 1.); // This should probably be a parameter.
+					float normalDiff = dot(normal - neighborNormal, normalEdgeBias);
+					float normalIndicator = clamp(smoothstep(-.01, .01, normalDiff), 0.0, 1.0);
+					
+					// Only the shallower pixel should detect the normal edge.
+					float depthIndicator = clamp(sign(depthDiff * .25 + .0025), 0.0, 1.0);
+
+					return (1.0 - dot(normal, neighborNormal)) * depthIndicator * normalIndicator;
+
+				}
+
+				float normalEdgeIndicator(float depth, vec3 normal) {
+					
+					float indicator = 0.0;
+
+					indicator += neighborNormalEdgeIndicator(0, -1, depth, normal);
+					indicator += neighborNormalEdgeIndicator(0, 1, depth, normal);
+					indicator += neighborNormalEdgeIndicator(-1, 0, depth, normal);
+					indicator += neighborNormalEdgeIndicator(1, 0, depth, normal);
+
+					return step(0.1, indicator);
+
+				}
+
+				void main() {
+
+					vec4 texel = texture2D( tDiffuse, vUv );
+
+					float depth = 0.0;
+					vec3 normal = vec3(0.0);
+
+					if (depthEdgeStrength > 0.0 || normalEdgeStrength > 0.0) {
+
+						depth = getDepth(0, 0);
+						normal = getNormal(0, 0);
+
+					}
+
+					float dei = 0.0;
+					if (depthEdgeStrength > 0.0) 
+						dei = depthEdgeIndicator(depth, normal);
+
+					float nei = 0.0; 
+					if (normalEdgeStrength > 0.0) 
+						nei = normalEdgeIndicator(depth, normal);
+
+					float Strength = dei > 0.0 ? (1.0 - depthEdgeStrength * dei) : (1.0 + normalEdgeStrength * nei);
+
+					gl_FragColor = texel * Strength;
+
+				}
+				`
+    });
+  }
+}
+function pixelRenderTarget(resolution, pixelFormat, useDepthTexture) {
+  const renderTarget = new THREE.WebGLRenderTarget(
+    resolution.x,
+    resolution.y,
+    !useDepthTexture ? void 0 : {
+      depthTexture: new THREE.DepthTexture(resolution.x, resolution.y),
+      depthBuffer: true
+    }
+  );
+  renderTarget.texture.format = pixelFormat;
+  renderTarget.texture.minFilter = THREE.NearestFilter;
+  renderTarget.texture.magFilter = THREE.NearestFilter;
+  renderTarget.texture.generateMipmaps = false;
+  renderTarget.stencilBuffer = false;
+  return renderTarget;
+}
+exports.RenderPixelatedPass = RenderPixelatedPass;
+//# sourceMappingURL=RenderPixelatedPass.cjs.map