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-rw-r--r--src/mesa/drivers/dri/i965/intel_mipmap_tree.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index f218a2a196a..8addcc5010c 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -489,10 +489,26 @@ intel_miptree_create_layout(struct brw_context *brw,
if (layout_flags & MIPTREE_LAYOUT_FORCE_ALL_SLICE_AT_LOD)
mt->array_layout = ALL_SLICES_AT_EACH_LOD;
- /* Use HALIGN_16 if MCS is enabled for non-MSRT */
- if (brw->gen >= 8 && num_samples < 2 &&
- intel_miptree_is_fast_clear_capable(brw, mt))
+ /*
+ * Obey HALIGN_16 constraints for Gen8 and Gen9 buffers which are
+ * multisampled or have an AUX buffer attached to it.
+ *
+ * GEN | MSRT | AUX_CCS_* or AUX_MCS
+ * -------------------------------------------
+ * 9 | HALIGN_16 | HALIGN_16
+ * 8 | HALIGN_ANY | HALIGN_16
+ * 7 | ? | ?
+ * 6 | ? | ?
+ */
+ if (intel_miptree_is_fast_clear_capable(brw, mt)) {
+ if (brw->gen >= 9 || (brw->gen == 8 && num_samples == 1))
+ layout_flags |= MIPTREE_LAYOUT_FORCE_HALIGN16;
+ } else if (brw->gen >= 9 && num_samples > 1) {
layout_flags |= MIPTREE_LAYOUT_FORCE_HALIGN16;
+ } else {
+ /* For now, nothing else has this requirement */
+ assert((layout_flags & MIPTREE_LAYOUT_FORCE_HALIGN16) == 0);
+ }
brw_miptree_layout(brw, mt, requested, layout_flags);