fb

Author: GarboMuffin

src/PenSkin.js

@@ -97,14 +97,15 @@ class PenSkin extends Skin {
         this.a_penPoints_loc = gl.getAttribLocation(this._lineShader.program, 'a_penPoints');
 
         if (gl.drawArraysInstanced) {
+            throw new Error('bad');
             // WebGL2 has native instanced rendering
             this.instancedRendering = true;
             this.glDrawArraysInstanced = gl.drawArraysInstanced.bind(gl);
             this.glVertexAttribDivisor = gl.vertexAttribDivisor.bind(gl);
         } else {
             // WebGL1 may have instanced rendering through the ANGLE_instanced_arrays extension
             const instancedArraysExtension = gl.getExtension('ANGLE_instanced_arrays');
-            if (instancedArraysExtension) {
+            if (false && instancedArraysExtension) {
                 this.instancedRendering = true;
                 this.glDrawArraysInstanced = instancedArraysExtension.drawElementsInstancedANGLE.bind(
                     instancedArraysExtension

src/RenderWebGL.js

@@ -148,7 +148,7 @@ class RenderWebGL extends EventEmitter {
             antialias: false,
             powerPreference: RenderWebGL.powerPreference
         };
-        return twgl.getContext(canvas, contextAttribs);
+        return canvas.getContext('webgl', contextAttribs);
     }
 
     /**