Module: Mesa
Branch: master
Commit: f469235a6e0c239166ba803e121994063b47ddd3
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=f469235a6e0c239166ba803e121994063b47ddd3
Author: Jason Ekstrand <jason.ekstr...@intel.com>
Date: Fri Nov 25 22:09:30 2016 -0800
anv/cmd_buffer: Remove the 1-D case from the HiZ QPitch calculation
The 1-D special case doesn't actually apply to depth or HiZ. I discovered
this while converting BLORP over to genxml and ISL. The reason is that the
1-D special case only applies to the new Sky Lake 1-D layout which is only
used for LINEAR 1-D images. For tiled 1-D images, such as depth buffers,
the old gen4 2-D layout is used and the QPitch should be in rows.
Reviewed-by: Nanley Chery <nanley.g.ch...@intel.com>
Cc: "13.0" <mesa-sta...@lists.freedesktop.org>
---
src/intel/vulkan/genX_cmd_buffer.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/intel/vulkan/genX_cmd_buffer.c
b/src/intel/vulkan/genX_cmd_buffer.c
index e9a1ef9..73f4523 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -2181,11 +2181,14 @@ cmd_buffer_emit_depth_stencil(struct anv_cmd_buffer
*cmd_buffer)
* - SURFTYPE_1D: distance in pixels between array slices
* - SURFTYPE_2D/CUBE: distance in rows between array slices
* - SURFTYPE_3D: distance in rows between R - slices
+ *
+ * Unfortunately, the docs aren't 100% accurate here. They fail to
+ * mention that the 1-D rule only applies to linear 1-D images.
+ * Since depth and HiZ buffers are always tiled, they are treated as
+ * 2-D images. Prior to Sky Lake, this field is always in rows.
*/
hdb.SurfaceQPitch =
- image->aux_surface.isl.dim == ISL_SURF_DIM_1D ?
- isl_surf_get_array_pitch_el(&image->aux_surface.isl) >> 2 :
- isl_surf_get_array_pitch_el_rows(&image->aux_surface.isl) >> 2;
+ isl_surf_get_array_pitch_el_rows(&image->aux_surface.isl) >> 2;
#endif
}
} else {
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