For gen8+ this will indicate when we should allow hiz based sampling
during rendering.
Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com>
---
src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 880e41d..756d122 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -1649,7 +1649,17 @@ bool
intel_miptree_sample_with_hiz(struct brw_context *brw,
struct intel_mipmap_tree *mt)
{
- return false;
+ /* Sampling using the hiz buffer requires gen8.
+ *
+ * If compressed multisampling is enabled, then we use it for the auxiliary
+ * buffer instead.
+ *
+ * We can't enable hiz auxiliary buffer support for 3D textures.
+ */
+ return (brw->gen >= 8 &&
+ mt->hiz_buf &&
+ !mt->mcs_buf &&
+ mt->target != GL_TEXTURE_3D);
}
/**
--
2.0.0
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