Adding UniqueTone #6

Gruntfile.js

@@ -38,6 +38,7 @@ module.exports = function(grunt) {
         "src/trans/ColorClip.js",
         "src/trans/DynamicMovement.js",
         "src/trans/ChannelShift.js",
+        "src/trans/UniqueTone.js",
 
         "src/render/SuperScope.js",
         "src/render/Simple.js",

src/trans/UniqueTone.js

@@ -0,0 +1,61 @@
+/**
+ * Copyright (c) 2013 Azeem Arshad
+ * See the file license.txt for copying permission.
+ */
+
+(function(Webvs) {
+
+function UniqueTone(options) {
+    options = _.defaults(options, {
+        color: "#ffffff",
+        invert: false,
+        blendMode: "REPLACE"
+    });
+
+    this.tone = Webvs.parseColorNorm(options.color);
+    this.invert = options.invert;
+    this.program = new UniqueToneProgram(Webvs.getBlendMode(options.blendMode));
+}
+Webvs.UniqueTone = Webvs.defineClass(UniqueTone, Webvs.Component, {
+    init: function(gl, main, parent) {
+        UniqueTone.super.init.call(this, gl, main, parent);
+        this.program.init(gl);
+    },
+
+    update: function() {
+        this.program.run(this.parent.fm, null, this.tone, this.invert);
+    },
+
+    destroy: function() {
+        UniqueTone.super.destroy.call(this);
+        this.program.cleanup();
+    }
+});
+
+function UniqueToneProgram(blendMode) {
+    UniqueToneProgram.super.constructor.call(this, {
+        outputBlendMode: blendMode,
+        swapFrame: true,
+        fragmentShader: [
+            "uniform vec3 u_tone;",
+            "uniform bool u_invert;",
+            "void main() {",
+            "   vec4 srcColor = getSrcColor();",
+            "   float depth = max(srcColor.r, max(srcColor.g, srcColor.b));",
+            "   if(u_invert) {",
+            "       depth = 1.0-depth;",
+            "   }",
+            "   setFragColor(vec4(depth*u_tone, 1));",
+            "}"
+        ]
+    });
+}
+Webvs.UniqueToneProgram = Webvs.defineClass(UniqueToneProgram, Webvs.QuadBoxProgram, {
+    draw: function(tone, invert) {
+        this.setUniform.apply(this, ["u_tone", "3f"].concat(tone));
+        this.setUniform("u_invert", "1f", invert?1:0);
+        UniqueToneProgram.super.draw.call(this);
+    }
+});
+
+})(Webvs);