Added glFuncMap

Author: photonstorm

CHANGELOG.md

@@ -97,6 +97,7 @@ Notes:
 * There is a new webpack config `FEATURE_SOUND` which is set to `true` by default, but if set to `false` it will exclude the Sound Manager and all of its systems into the build files. Fix #4428 (thanks @goldfire)
 * `Scene.Systems.renderer` is a new property that is a reference to the current renderer the game is using.
 * `Utils.Objects.SetValue` is a new function that allows you to set a value in an object by specifying a property key. The function can set a value to any depth by using dot-notation for the key, i.e. `SetValue(data, 'world.position.x', 100)`.
+* `WebGLRenderer.glFuncMap` is a new object, populated during the `init` method, that contains uniform mappings from key to the corresponding gl function, i.e. `mat2` to `gl.uniformMatrix2fv`.
 
 ### Updates
 

src/renderer/webgl/WebGLRenderer.js

@@ -506,6 +506,16 @@ var WebGLRenderer = new Class({
          */
         this.currentCameraMask = { mask: null, camera: null };
 
+        /**
+         * Internal gl function mapping for uniform look-up.
+         * https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/uniform
+         * 
+         * @name Phaser.Renderer.WebGL.WebGLRenderer#glFuncMap
+         * @type {any}
+         * @since 3.17.0
+         */
+        this.glFuncMap = null;
+
         this.init(this.config);
     },
 
@@ -571,6 +581,35 @@ var WebGLRenderer = new Class({
         this.glFormats[3] = gl.UNSIGNED_SHORT;
         this.glFormats[4] = gl.FLOAT;
 
+        //  Set the gl function map
+        this.glFuncMap = {
+
+            mat2: { func: gl.uniformMatrix2fv, length: 1, matrix: true },
+            mat3: { func: gl.uniformMatrix3fv, length: 1, matrix: true },
+            mat4: { func: gl.uniformMatrix4fv, length: 1, matrix: true },
+
+            '1f': { func: gl.uniform1f, length: 1 },
+            '1fv': { func: gl.uniform1fv, length: 1 },
+            '1i': { func: gl.uniform1i, length: 1 },
+            '1iv': { func: gl.uniform1iv, length: 1 },
+
+            '2f': { func: gl.uniform2f, length: 2 },
+            '2fv': { func: gl.uniform2fv, length: 1 },
+            '2i': { func: gl.uniform2i, length: 2 },
+            '2iv': { func: gl.uniform2iv, length: 1 },
+
+            '3f': { func: gl.uniform3f, length: 3 },
+            '3fv': { func: gl.uniform3fv, length: 1 },
+            '3i': { func: gl.uniform3i, length: 3 },
+            '3iv': { func: gl.uniform3iv, length: 1 },
+
+            '4f': { func: gl.uniform4f, length: 4 },
+            '4fv': { func: gl.uniform4fv, length: 1 },
+            '4i': { func: gl.uniform4i, length: 4 },
+            '4iv': { func: gl.uniform4iv, length: 1 }
+
+        };
+
         // Load supported extensions
         var exts = gl.getSupportedExtensions();