New Shader class

Author: photonstorm

src/display/shader/Shader.js

@@ -0,0 +1,104 @@
+/**
+ * @author       Richard Davey <rich@photonstorm.com>
+ * @copyright    2019 Photon Storm Ltd.
+ * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
+ */
+
+var Class = require('../../utils/Class');
+
+/**
+ * @classdesc
+ *
+ * @class Shader
+ * @memberof Phaser.Display
+ * @constructor
+ * @since 3.17.0
+ *
+ * @param {string} key - The key of this shader. Must be unique within the shader cache.
+ * @param {string} fragmentSrc - 
+ * @param {string} vertexSrc - 
+ * @param {any} uniforms - 
+ */
+var Shader = new Class({
+
+    initialize:
+
+    function Shader (key, fragmentSrc, vertexSrc, uniforms)
+    {
+        if (fragmentSrc === undefined)
+        {
+            fragmentSrc = [
+                'precision mediump float;',
+
+                'uniform vec2 resolution;',
+
+                'varying vec2 fragCoord;',
+
+                'void main () {',
+                '    vec2 uv = fragCoord / resolution.xy;',
+                '    gl_FragColor = vec4(uv.xyx, 1.0);',
+                '}'
+            ].join('\n');
+        }
+
+        if (vertexSrc === undefined)
+        {
+            vertexSrc = [
+                'precision mediump float;',
+
+                'uniform mat4 uProjectionMatrix;',
+                'uniform mat4 uViewMatrix;',
+
+                'attribute vec2 inPosition;',
+
+                'varying vec2 fragCoord;',
+
+                'void main () {',
+                'gl_Position = uProjectionMatrix * uViewMatrix * vec4(inPosition, 1.0, 1.0);',
+                'fragCoord = inPosition;',
+                '}'
+            ].join('\n');
+        }
+
+        if (uniforms === undefined) { uniforms = {}; }
+
+        /**
+         * The key of this shader, unique within the shader cache of this Phaser game instance.
+         *
+         * @name Phaser.Display.Shader#key
+         * @type {string}
+         * @since 3.17.0
+         */
+        this.key = key;
+
+        /**
+         * The source code, as a string, of the fragment shader being used.
+         *
+         * @name Phaser.Display.Shader#fragmentSrc
+         * @type {string}
+         * @since 3.17.0
+         */
+        this.fragmentSrc = fragmentSrc;
+
+        /**
+         * The source code, as a string, of the vertex shader being used.
+         *
+         * @name Phaser.Display.Shader#vertexSrc
+         * @type {string}
+         * @since 3.17.0
+         */
+        this.vertexSrc = vertexSrc;
+
+        /**
+         * The default uniforms for this shader.
+         *
+         * @name Phaser.Display.Shader#uniforms
+         * @type {any}
+         * @since 3.17.0
+         */
+        this.uniforms = uniforms;
+    }
+
+});
+
+module.exports = Shader;