On 24.12.2019 12.22, Kristian Nielsen wrote: > This patch to openscad works around the problem: > > > https://salsa.debian.org/knielsen-guest/openscad/commit/7225800b534a36e5ad84c56c274889b8d0edc0ce > > It uses Xrender to query visuals returned from glXChooseFBConfig(), and > filter out those with alphaMask=0. > > With this patch, all openscad tests are passing with mesa 19.3.1-2. > > However, I'm unsure if this is the correct approach? It does not seem right > that querying Xrender would be required just to specify GLX_ALPHA_SIZE to > glXChooseFBConfig(). Maybe there is a simpler fix for openscad, or possibly > this is a bug in mesa that should be fixed? > > - Kristian.
File it to mesa upstream to find out if it's their bug or not. But in the meantime a workaround in the test might be needed. -- t