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tgsi: implement saturation

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Fix recent performance regression.
This commit is contained in:
Keith Whitwell 2009-09-12 18:33:46 -07:00
parent 055fe5768c
commit 18e5f1cee4
2 changed files with 32 additions and 17 deletions
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6
progs/fp/add-sat.txt Normal file
View file

@ -0,0 +1,6 @@
!!ARBfp1.0
TEMP R0;
MOV R0, fragment.color;
ADD_SAT R0, R0, R0;
MUL result.color, {0.5}.x, R0;
END

43
src/gallium/auxiliary/tgsi/tgsi_sse2.c
View file

@ -1360,6 +1360,32 @@ emit_store(
const struct tgsi_full_instruction *inst,
unsigned chan_index )
{
switch( inst->Instruction.Saturate ) {
case TGSI_SAT_NONE:
break;
case TGSI_SAT_ZERO_ONE:
sse_maxps(
func,
make_xmm( xmm ),
get_temp(
TGSI_EXEC_TEMP_00000000_I,
TGSI_EXEC_TEMP_00000000_C ) );
sse_minps(
func,
make_xmm( xmm ),
get_temp(
TGSI_EXEC_TEMP_ONE_I,
TGSI_EXEC_TEMP_ONE_C ) );
break;
case TGSI_SAT_MINUS_PLUS_ONE:
assert( 0 );
break;
}
switch( reg->DstRegister.File ) {
case TGSI_FILE_OUTPUT:
emit_output(
@ -1388,19 +1414,6 @@ emit_store(
default:
assert( 0 );
}
switch( inst->Instruction.Saturate ) {
case TGSI_SAT_NONE:
break;
case TGSI_SAT_ZERO_ONE:
/* assert( 0 ); */
break;
case TGSI_SAT_MINUS_PLUS_ONE:
assert( 0 );
break;
}
}
#define STORE( FUNC, INST, XMM, INDEX, CHAN )\
@ -1747,10 +1760,6 @@ emit_instruction(
if (indirect_temp_reference(inst))
return FALSE;
/* we don't handle saturation/clamping yet */
if (inst->Instruction.Saturate != TGSI_SAT_NONE)
return FALSE;
/* need to use extra temps to fix SOA dependencies : */
if (tgsi_check_soa_dependencies(inst))
return FALSE;