https://bugs.freedesktop.org/show_bug.cgi?id=92236
Bug ID: 92236 Summary: [ColorTiling2D] R600 BARTS radeon: pipe_context->clear with color tiling enabled doesn't immediately affect color buffer Product: Mesa Version: git Hardware: x86 (IA32) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 Assignee: dri-devel@lists.freedesktop.org Reporter: siro@das-labor.org QA Contact: dri-devel@lists.freedesktop.org
There's an open Gallium nine bug: https://github.com/iXit/Mesa-3D/issues/138
It looks like pipe_context->clear called with PIPE_CLEAR_COLOR isn't applied immediately to the buffer. As nine mimics swap-chains, the buffer is reused after some frames resulting in "delayed" presentation.
The problem doesn't exist with R600_DEBUG=notiling and it doesn't exists when using pipe_context->clear_render_target instead.
Tested with mesa git: https://github.com/iXit/Mesa-3D/