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i965/fs: Use exec_size instead of dispatch_width to determine the message variant.

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dispatch_width is global for a single compilation and doesn't
necessarily match the desired execution width if we had to lower the
original full-width instruction due to hardware limitations.  These
were all inside a Gen4-specific branch so this patch shouldn't have
any effect on more recent hardware.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Francisco Jerez 2015-07-13 15:42:20 +03:00
parent 33deff4f05
commit 8fbb3d3569
1 changed files with 4 additions and 4 deletions
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8
src/mesa/drivers/dri/i965/brw_fs_generator.cpp
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@ -655,7 +655,7 @@ fs_generator::generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src
/* Note that G45 and older determines shadow compare and dispatch width
* from message length for most messages.
*/
if (dispatch_width == 8) {
if (inst->exec_size == 8) {
msg_type = BRW_SAMPLER_MESSAGE_SIMD8_SAMPLE;
if (inst->shadow_compare) {
assert(inst->mlen == 6);
@ -674,7 +674,7 @@ fs_generator::generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src
break;
case FS_OPCODE_TXB:
if (inst->shadow_compare) {
assert(dispatch_width == 8);
assert(inst->exec_size == 8);
assert(inst->mlen == 6);
msg_type = BRW_SAMPLER_MESSAGE_SIMD8_SAMPLE_BIAS_COMPARE;
} else {
@ -685,7 +685,7 @@ fs_generator::generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src
break;
case SHADER_OPCODE_TXL:
if (inst->shadow_compare) {
assert(dispatch_width == 8);
assert(inst->exec_size == 8);
assert(inst->mlen == 6);
msg_type = BRW_SAMPLER_MESSAGE_SIMD8_SAMPLE_LOD_COMPARE;
} else {
@ -696,7 +696,7 @@ fs_generator::generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src
break;
case SHADER_OPCODE_TXD:
/* There is no sample_d_c message; comparisons are done manually */
assert(dispatch_width == 8);
assert(inst->exec_size == 8);
assert(inst->mlen == 7 || inst->mlen == 10);
msg_type = BRW_SAMPLER_MESSAGE_SIMD8_SAMPLE_GRADIENTS;
break;