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iris: Don't memset CCS on integrated gfx12

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There are no illegal CCS values on integrated gfx12 platforms.

Reviewed-by: Rohan Garg <rohan.garg@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27835>
This commit is contained in:
Nanley Chery 2023-04-11 13:28:27 -07:00 • committed by Marge Bot
parent e1443074f3
commit 06dff45abb
1 changed files with 7 additions and 5 deletions
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12
src/gallium/drivers/iris/iris_resource.c
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@ -935,8 +935,8 @@ iris_resource_configure_aux(struct iris_screen *screen,
assert(res->aux.usage != ISL_AUX_USAGE_STC_CCS);
initial_state =
isl_drm_modifier_get_default_aux_state(res->mod_info->modifier);
} else if (devinfo->has_flat_ccs) {
assert(res->aux.surf.size_B == 0);
} else if (devinfo->ver >= 12) {
assert(!devinfo->has_illegal_ccs_values);
/* From Bspec 47709, "MCS/CCS Buffers for Render Target(s)":
*
* "CCS surface does not require initialization. Illegal CCS
@ -964,7 +964,6 @@ iris_resource_configure_aux(struct iris_screen *screen,
*/
initial_state = ISL_AUX_STATE_COMPRESSED_NO_CLEAR;
} else {
assert(res->aux.surf.size_B > 0);
/* When CCS is used, we need to ensure that it starts off in a valid
* state. From the Sky Lake PRM, "MCS Buffer for Render Target(s)":
*
@ -999,9 +998,12 @@ static bool
iris_resource_init_aux_buf(struct iris_screen *screen,
struct iris_resource *res)
{
const struct intel_device_info *devinfo = screen->devinfo;
if (iris_resource_get_aux_state(res, 0, 0) != ISL_AUX_STATE_AUX_INVALID &&
res->aux.surf.size_B > 0) {
if (isl_aux_usage_has_ccs(res->aux.usage) && devinfo->ver <= 11) {
/* Initialize the CCS on BDW-ICL to the PASS_THROUGH state. This avoids
* the need to ambiguate in some cases.
*/
void* map = iris_bo_map(NULL, res->bo, MAP_WRITE | MAP_RAW);
if (!map)
return false;