Initial commit

C#/TSEngine/Core/GL/gl.ts

@@ -0,0 +1,32 @@
+namespace TSE {
+    /** The WebGL rendering context. */
+    export var gl: WebGLRenderingContext;
+
+    /**
+     * Responsible for setting up a WebGL rendering context.
+     * */
+    export class GLUtilities {
+
+        /**
+         * Initialize WebGL
+         * @param elementId The id of the canvas element for rendering the game output.
+         */
+        public static initialize(elementId?: string): HTMLCanvasElement {
+            let canvas: HTMLCanvasElement;
+
+            if (elementId !== undefined)
+                canvas = document.getElementById(elementId) as HTMLCanvasElement;
+            if (elementId === undefined) {
+                canvas = document.createElement("canvas") as HTMLCanvasElement;
+                document.body.appendChild(canvas);
+            }
+
+            gl = canvas.getContext("webgl");
+            if (gl === undefined)
+                throw new Error("Unable to initialize WebGL");
+
+            return canvas;
+        }
+
+    }
+}