WebGL graphics glitch in native OpenGL mode in Sponza by Babylon.js demo. Summary ... AFAIK there's no reason to not enable it, besides backwards compat. 1. Set prefs webgl.disable-angle;true webgl.bypass-shader-validation;true 2. Visit http://www.babylonjs.com/demos/SponzaDynamicShadows/ Observed: Rendering is almost correct, but there are 1px wide glitch bright lines in the rendered shadows, which are not present when the above prefs are not set. To illustrate, see the following screenshots: - two 1px vertical stripes in the middle of the screen: https://dl.dropboxusercontent.com/u/40949268/Bugs/sponza_native_gl_1px_line_glitch_1.png - one 1px horizontal stripe at the far end of the screen: https://dl.dropboxusercontent.com/u/40949268/Bugs/sponza_native_gl_1px_line_glitch_2.png - a 1px diagonal stripe joining to a 1px horizontal and a vertical line at a corner: https://dl.dropboxusercontent.com/u/40949268/Bugs/sponza_native_gl_1px_line_glitch_3.png Assuming the sample is rendering shadow maps to the faces of a cube map, this could be something related to the OpenGL seamless cube map sampling options https://www.opengl.org/registry/specs/ARB/seamless_cube_map.txt that are different in ANGLE and OpenGL modes. Note: Marking this bug as minor for now, since it is not on the default current GL execution path due to the prefs. Jeff mentioned that reporting these would still be interesting since a potential future plan might be to run on native GL skipping ANGLE GL->D3D on Windows, where drivers would permit.

Thank you for your fast and extended response. I am an amateuer to webGL :-/ Is Sponza part of Firefox or should the change made in Babylon? What change by the way? webgl.bypass-shader-validation does not exist in the actual Firefox; I created it. Chaning the webgl.* prefs did not stop the warning. The screenshots are 404.