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i965: Clarify check for which cache to use on Gen6 data port reads.

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Currently, we use the Render Cache for scratch access (read/write data)
and the Sampler Cache for all read only data (pull constants).

Reversing the condition here is clearer: if the caller requested the
Render Cache, use that.  Otherwise, they requested the Data Cache
(which does not exist on Gen6) or Sampler Cache, so use the Sampler
Cache.

This should not change behavior in any way.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Kenneth Graunke 2011-10-07 21:45:34 -07:00
parent 0d4a9ba9b2
commit bbea5c5a5a
1 changed files with 3 additions and 3 deletions
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6
src/mesa/drivers/dri/i965/brw_eu_emit.c
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@ -626,10 +626,10 @@ brw_set_dp_read_message(struct brw_compile *p,
} else if (intel->gen == 6) {
uint32_t target_function;
if (target_cache == BRW_DATAPORT_READ_TARGET_DATA_CACHE)
target_function = GEN6_MESSAGE_TARGET_DP_SAMPLER_CACHE;
else
if (target_cache == BRW_DATAPORT_READ_TARGET_RENDER_CACHE)
target_function = GEN6_MESSAGE_TARGET_DP_RENDER_CACHE;
else
target_function = GEN6_MESSAGE_TARGET_DP_SAMPLER_CACHE;
insn->bits3.gen6_dp.binding_table_index = binding_table_index;
insn->bits3.gen6_dp.msg_control = msg_control;