Error: WebGL warning: texSubImage2D: Texture has not been initialized prior to a partial upload, forcing the browser to clear it. This may be slow. render-engine.js:8268:6
Error: WebGL warning: texSubImage2D: This operation requires zeroing texture data. This is slow. render-engine.js:8268:6
Error: WebGL warning: Calling gl.clear(0) has no effect.
render-engine.js:9781:2
Error: WebGL: No further warnings will be reported for this WebGL context. (already reported 32 warnings)
