From: Alex Deucher <alexander.deuc...@amd.com> Can cause lockups in certain cases when zfunc/zenable/zwrite change without a flush in between.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=60969 This is a candidate for the 9.1 branch. Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> --- src/gallium/drivers/r600/evergreen_state.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c index fd73613..4a91942 100644 --- a/src/gallium/drivers/r600/evergreen_state.c +++ b/src/gallium/drivers/r600/evergreen_state.c @@ -3536,9 +3536,12 @@ void evergreen_update_db_shader_control(struct r600_context * rctx) * write to the zbuffer. Write to zbuffer is delayed after fragment shader * execution and thus after alpha test so if discarded by the alpha test * the z value is not written. + * If ReZ is enabled, and the zfunc/zenable/zwrite values change you can + * get a hang unless you flush the DB in between. For now just use + * LATE_Z. */ if (rctx->alphatest_state.sx_alpha_test_control) { - db_shader_control |= S_02880C_Z_ORDER(V_02880C_RE_Z); + db_shader_control |= S_02880C_Z_ORDER(V_02880C_LATE_Z); } else { db_shader_control |= S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z); } -- 1.7.7.5 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
