https://bugs.freedesktop.org/show_bug.cgi?id=32634

Summary: [r300g, bisected] Massive corruption in Unigine Sanctuary Product: Mesa Version: git Platform: Other URL: http://www.unigine.com/download/#sanctuary OS/Version: All Status: NEW Keywords: regression Severity: normal Priority: medium Component: Drivers/Gallium/r300 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: drakkk@centrum.cz

Starting with commit 4e52e8f746e3565bf3fe9ba8e4e3744ce0302478 rendering is almost completely broken. There are black artifacts all over the screen.

4e52e8f746e3565bf3fe9ba8e4e3744ce0302478 is the first bad commit commit 4e52e8f746e3565bf3fe9ba8e4e3744ce0302478 Author: Dave Airlie airlied@redhat.com Date: Sat Dec 18 10:40:33 2010 +1000

r300g: add support for color0 writes to all bound color buffers.

Thanks to Marek Olšák for making my initial attempt actually work.

Signed-off-by: Dave Airlie airlied@redhat.com

Reverting this commit makes the problem go away.

My configuration: Mesa: 876effb0e717e8e64050662f6ffa286c22065f5c Kernel: 2.6.36 GPU: RV530

To reproduce you need either 2.2 version of the Unigine Sanctuary benchmark or 2.3 version + patch to enable GL_ARB_half_float_pixel. http://lists.freedesktop.org/archives/mesa-dev/2010-December/004549.html libtxc_dxtn.so is also required.