Created attachment 135139 [details]
When running the WebGL content Doarama in Firefox https://doarama.com/view/853747 I get various artifacts with firefox:
1. Not properly blended text at the loading screen (alpha=0 results in black)
2. Various artifacts in the animated scene
This happens with Ironlake - all other driver/hw combinations I tested worked well (Radeon, R600, intel-gen7).
Created attachment 135140 [details]
not properly blended text of loading screen
Forgot to mention, this happens with Mesa-17.2.2
I don't have an Ironlake handy to test this, but those kinds of artifacts may have been fixed or at least partially fixed by:
Author: Kenneth Graunke <email@example.com>
Date: Thu Aug 2 15:02:18 2018 -0700
intel: Fix SIMD16 unaligned payload GRF reads on Gen4-5.
which shipped in Mesa 18.1.6 and Mesa 18.2.0. Can you try a newer Mesa?
Awesome, it works perfectly fine on Ironlake Mobile with Mesa 18.2.4 :)