**Actual Behaviour** In the ["Passing Shader Uniforms" example][0], the generated image is off-center.  **Expected Behaviour** Image is centered.  I think somewhere along the way, the [original values][1] got lost. **Would you like to work on the issue?** Yes [0]: https://p5js.org/examples/3d-passing-shader-uniforms.html [1]: https://github.com/aferriss/p5jsShaderExamples/blob/02572e0dbd3d196e488f47ec1813a10cc72da145/5_shapes/5-3_polygon/polygon.frag#L50