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resources/app/client/pixi/webgl/shaders/vision/base-vision.js

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+/**
+ * This class defines an interface which all adaptive vision shaders extend.
+ */
+class AdaptiveVisionShader extends AdaptiveLightingShader {
+
+  /** @inheritDoc */
+  static FRAGMENT_FUNCTIONS = `
+  ${super.FRAGMENT_FUNCTIONS}
+  vec3 computedVisionColor;
+  `;
+
+  /* -------------------------------------------- */
+
+  /** @override */
+  static EXPOSURE = `
+    // Computing exposed color for background
+    if ( exposure != 0.0 ) {
+      changedColor *= (1.0 + exposure);
+    }`;
+
+  /* -------------------------------------------- */
+
+  /** @inheritDoc */
+  static COMPUTE_ILLUMINATION = `
+  ${super.COMPUTE_ILLUMINATION}
+  if ( computeIllumination ) computedVisionColor = mix(computedDimColor, computedBrightColor, brightness);
+  else computedVisionColor = colorVision;
+  `;
+
+  /* -------------------------------------------- */
+
+  // FIXME: need to redeclare fragment begin here to take into account COMPUTE_ILLUMINATION
+  //        Do not work without this redeclaration.
+  /** @override */
+  static FRAGMENT_BEGIN = `
+  ${this.COMPUTE_ILLUMINATION}
+  float dist = distance(vUvs, vec2(0.5)) * 2.0;
+  vec4 depthColor = texture2D(depthTexture, vSamplerUvs);
+  float depth = smoothstep(0.0, 1.0, vDepth) * step(depthColor.g, depthElevation) * step(depthElevation, (254.5 / 255.0) - depthColor.r);
+  vec4 baseColor = useSampler ? texture2D(primaryTexture, vSamplerUvs) : vec4(1.0);
+  vec3 finalColor = baseColor.rgb;
+  `;
+
+  /* -------------------------------------------- */
+
+  /** @override */
+  static SHADOW = "";
+
+  /* -------------------------------------------- */
+  /*  Shader Techniques for vision                */
+  /* -------------------------------------------- */
+
+  /**
+   * A mapping of available shader techniques
+   * @type {Record<string, ShaderTechnique>}
+   */
+  static SHADER_TECHNIQUES = {
+    LEGACY: {
+      id: 0,
+      label: "LIGHT.AdaptiveLuminance",
+      coloration: `
+      float reflection = perceivedBrightness(baseColor);
+      finalColor *= reflection;`
+    }
+  };
+}