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i965/fs: Handle COMPR4 in LOAD_PAYLOAD

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Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Jason Ekstrand
2014-09-16 16:28:53 -07:00
parent 29f4c5b5d5
commit 1dd9b90ecd
2 changed files with 36 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_fs.cpp
+15
View File
@@ -2988,6 +2988,21 @@ fs_visitor::lower_load_payload()
if (inst->src[i].file == BAD_FILE) {
/* Do nothing but otherwise increment as normal */
} else if (dst.file == MRF &&
dst.width == 8 &&
brw->has_compr4 &&
i + 4 < inst->sources &&
inst->src[i + 4].equals(horiz_offset(inst->src[i], 8))) {
fs_reg compr4_dst = dst;
compr4_dst.reg += BRW_MRF_COMPR4;
compr4_dst.width = 16;
fs_reg compr4_src = inst->src[i];
compr4_src.width = 16;
fs_inst *mov = MOV(compr4_dst, compr4_src);
mov->force_writemask_all = true;
inst->insert_before(block, mov);
/* Mark i+4 as BAD_FILE so we don't emit a MOV for it */
inst->src[i + 4].file = BAD_FILE;
} else {
fs_inst *mov = MOV(dst, inst->src[i]);
if (inst->src[i].file == GRF) {
src/mesa/drivers/dri/i965/brw_fs.h
+21 -1
View File
@@ -143,6 +143,26 @@ byte_offset(fs_reg reg, unsigned delta)
return reg;
}
static inline fs_reg
horiz_offset(fs_reg reg, unsigned delta)
{
switch (reg.file) {
case BAD_FILE:
case UNIFORM:
case IMM:
/* These only have a single component that is implicitly splatted. A
* horizontal offset should be a harmless no-op.
*/
break;
case GRF:
case MRF:
return byte_offset(reg, delta * reg.stride * type_sz(reg.type));
default:
assert(delta == 0);
}
return reg;
}
static inline fs_reg
offset(fs_reg reg, unsigned delta)
{
@@ -184,7 +204,7 @@ half(fs_reg reg, unsigned idx)
assert(idx == 0 || (reg.file != HW_REG && reg.file != IMM));
assert(reg.width == 16);
reg.width = 8;
return byte_offset(reg, 8 * idx * reg.stride * type_sz(reg.type));
return horiz_offset(reg, 8 * idx);
}
static const fs_reg reg_undef;