From 96706bad5ff37e56ee48f9bbb143d39a6e113a62 Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Mon, 6 Jun 2016 18:22:21 -0700 Subject: [PATCH] isl/state: Emit no-op mip tail setup on SKL This hasn't ever been a problem in the past but it is recommended by the hardware docs. Reviewed-by: Chad Versace Cc: "12.0" --- src/intel/isl/isl_surface_state.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/intel/isl/isl_surface_state.c b/src/intel/isl/isl_surface_state.c index 5e512ac0c4a..f64d96ca059 100644 --- a/src/intel/isl/isl_surface_state.c +++ b/src/intel/isl/isl_surface_state.c @@ -292,6 +292,14 @@ isl_genX(surf_fill_state_s)(const struct isl_device *dev, void *state, s.MIPCountLOD = MAX(info->view->levels, 1) - 1; } +#if GEN_GEN >= 9 + /* We don't use miptails yet. The PRM recommends that you set "Mip Tail + * Start LOD" to 15 to prevent the hardware from trying to use them. + */ + s.TiledResourceMode = NONE; + s.MipTailStartLOD = 15; +#endif + const struct isl_extent3d image_align = get_image_alignment(info->surf); s.SurfaceVerticalAlignment = isl_to_gen_valign[image_align.height]; s.SurfaceHorizontalAlignment = isl_to_gen_halign[image_align.width]; -- 2.30.2