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i965/gen7: Enable support for fast color clears.

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This patch adds code to place mcs_state into INTEL_MCS_STATE_RESOLVED
for miptrees that are capable of supporting fast color clears.  This
will have no effect on buffers that don't undergo a fast color clear;
however, for buffers that do undergo a fast color clear, an MCS
miptree will be allocated (at the time of the first fast clear), and
will be used thereafter.

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Paul Berry 2013-05-21 11:58:38 -07:00
parent ef9142d4a3
commit b09a754078
1 changed files with 20 additions and 0 deletions
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20
src/mesa/drivers/dri/intel/intel_mipmap_tree.c
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@ -608,6 +608,16 @@ intel_miptree_create(struct intel_context *intel,
return NULL;
}
#ifndef I915
/* If this miptree is capable of supporting fast color clears, set
* mcs_state appropriately to ensure that fast clears will occur.
* Allocation of the MCS miptree will be deferred until the first fast
* clear actually occurs.
*/
if (intel_is_non_msrt_mcs_buffer_supported(intel, mt))
mt->mcs_state = INTEL_MCS_STATE_RESOLVED;
#endif
return mt;
}
@ -699,6 +709,16 @@ intel_miptree_create_for_dri2_buffer(struct intel_context *intel,
return NULL;
singlesample_mt->region->name = region->name;
#ifndef I915
/* If this miptree is capable of supporting fast color clears, set
* mcs_state appropriately to ensure that fast clears will occur.
* Allocation of the MCS miptree will be deferred until the first fast
* clear actually occurs.
*/
if (intel_is_non_msrt_mcs_buffer_supported(intel, singlesample_mt))
singlesample_mt->mcs_state = INTEL_MCS_STATE_RESOLVED;
#endif
if (num_samples == 0)
return singlesample_mt;