https://bugs.freedesktop.org/show_bug.cgi?id=91247 --- Comment #2 from Ilia Mirkin --- Created attachment 117125 --> https://bugs.freedesktop.org/attachment.cgi?id=117125&action=edit vert shader at failing call OK, so in my trimmed trace, http://people.freedesktop.org/~imirkin/traces/tru-trim.trace.xz it seems like things start going wrong on API call 424136 (I ran apitrace dump-images with '*/draw' and then did the diff-images thing). Coincidentally, right before this happens, it does glDepthFunc(GL_EQUAL) [which is *nuts*] and glDepthRange(0, 0.98). I need to see if nuking that glDepthRange call causes llvmpipe to generate the same image for that draw call. Also see if there are any funny depth-related bits we know about... ugh. Still bothering me is that apitrace is returning broken-looking depth surfaces. The previous draws all had glDepthRange(0.98, 1)... coincidence? And the shader will end up generating very negative z values, which will map to a depth range of 0.98 I guess? -- You are receiving this mail because: You are the QA Contact for the bug. You are the assignee for the bug.