| Bug ID | 107516 |
|---|---|
| Summary | Firefox for WebGL fallbacks to swrast_dri.so, not using radeon_si.so |
| Product | DRI |
| Version | DRI git |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | bugs.freedesktop.org@pm.port0.org |
With recent build of libdrm (2.4.93) Mozilla Firefox cannot use accelerated WebGL, use software emulation instead. HW. AMD RX560 and AMD WX2100 (RX550). SW. Ubuntu 16.04 with kernels 4.17.X and 4.18.rc from http://kernel.ubuntu.com/~kernel-ppa/mainline/, plus Oibaf's PPA builds of drm, mesa, etc. https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers Symptoms. Firefox works OK, but on site with WebGL it works very slow - due to fallback to software GL rendering. Note. about:support page in Firefox DOES show correct driver info: WebGL 1 Driver Renderer X.Org -- AMD Radeon Pro WX2100 (POLARIS12, DRM 3.26.0, 4.18.0-041800rc6-generic, LLVM 6.0.1) But, on WebGL site (ex. windy.com), swrast_dri.so get loaded and eats all CPU cores.
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