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isl: Add support for HiZ surfaces

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Reviewed-by: Chad Versace <chad.versace@intel.com>
This commit is contained in:
Jason Ekstrand
2016-07-08 19:36:33 -07:00
parent fc3650a0a9
commit 33dc8549fb
7 changed files with 63 additions and 3 deletions
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23
src/intel/isl/isl.c
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@@ -167,6 +167,16 @@ isl_tiling_get_info(const struct isl_device *dev,
break;
}
case ISL_TILING_HIZ:
/* HiZ buffers are required to have ISL_FORMAT_HIZ which is an 8x4
* 128bpb format. The tiling has the same physical dimensions as
* Y-tiling but actually has two HiZ columns per Y-tiled column.
*/
assert(bs == 16);
logical_el = isl_extent2d(16, 16);
phys_B = isl_extent2d(128, 32);
break;
default:
unreachable("not reached");
} /* end switch */
@@ -221,6 +231,7 @@ isl_surf_choose_tiling(const struct isl_device *dev,
CHOOSE(ISL_TILING_LINEAR);
}
CHOOSE(ISL_TILING_HIZ);
CHOOSE(ISL_TILING_Ys);
CHOOSE(ISL_TILING_Yf);
CHOOSE(ISL_TILING_Y0);
@@ -314,7 +325,8 @@ isl_choose_array_pitch_span(const struct isl_device *dev,
return ISL_ARRAY_PITCH_SPAN_COMPACT;
}
if (isl_surf_usage_is_depth_or_stencil(info->usage)) {
if (isl_surf_usage_is_depth_or_stencil(info->usage) ||
(info->usage & ISL_SURF_USAGE_HIZ_BIT)) {
/* From the Ivybridge PRM >> Volume 1 Part 1: Graphics Core >>
* Section 6.18.4.7: Surface Arrays (p112):
*
@@ -388,6 +400,15 @@ isl_choose_image_alignment_el(const struct isl_device *dev,
enum isl_msaa_layout msaa_layout,
struct isl_extent3d *image_align_el)
{
if (info->format == ISL_FORMAT_HIZ) {
assert(ISL_DEV_GEN(dev) >= 6);
/* HiZ surfaces are always aligned to 16x8 pixels in the primary surface
* which works out to 2x2 HiZ elments.
*/
*image_align_el = isl_extent3d(2, 2, 1);
return;
}
if (ISL_DEV_GEN(dev) >= 9) {
gen9_choose_image_alignment_el(dev, info, tiling, msaa_layout,
image_align_el);