https://bugs.freedesktop.org/show_bug.cgi?id=47765
Bug #: 47765 Summary: Corrupt rendering to a window between 57 and 63 pixels high Classification: Unclassified Product: Mesa Version: git Platform: Other OS/Version: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: tvrtko.ursulin@onelan.co.uk
We are seeing render corruption when rendering a texture to a window between 57 and 63 pixels high. glViewport being set to window dimensions.
Texture vertices do not seem to matter. If I render to the full viewport, or to a subset of a viewport, always the whole viewport gets corrupt (so including the area outside texture vertices).
Texture size does not seem to matter.
Rendering is done with glDrawArray GL_TRIANGLE_FAN and the destination window is RGBA.
Environment:
00:01.0 VGA compatible controller: ATI Technologies Inc AMD Radeon HD 6310 GraphicsATI
Kernel 3.3.0 + 0001-drm-radeon-add-support-for-evergreen-ni-tiling-infor.patch
It does not happen without this patch - so it is probably tiling related.
xorg-drivers-ati, mesa and libdrm from yesterday's git. Last one is in fact a bit older, but I applied a single interesting patch (9b3ad51ae5fd9654df8ef75de845a519015150bb) by hand to make it up to date.