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#include "cell/common.h"
#include "pipe/p_shader_tokens.h"
#include "util/u_debug.h"
#include "tgsi/tgsi_parse.h"
//#include "tgsi_build.h"
#include "tgsi/tgsi_util.h"
unsigned
tgsi_util_get_src_register_swizzle(
const struct tgsi_src_register *reg,
unsigned component )
{
switch( component ) {
case 0:
return reg->SwizzleX;
case 1:
return reg->SwizzleY;
case 2:
return reg->SwizzleZ;
case 3:
return reg->SwizzleW;
default:
ASSERT( 0 );
}
return 0;
}
unsigned
tgsi_util_get_full_src_register_swizzle(
const struct tgsi_full_src_register *reg,
unsigned component )
{
return tgsi_util_get_src_register_swizzle(
reg->SrcRegister,
component );
}
unsigned
tgsi_util_get_full_src_register_sign_mode(
const struct tgsi_full_src_register *reg,
unsigned component )
{
unsigned sign_mode;
if( reg->SrcRegisterExtMod.Absolute ) {
/* Consider only the post-abs negation. */
if( reg->SrcRegisterExtMod.Negate ) {
sign_mode = TGSI_UTIL_SIGN_SET;
}
else {
sign_mode = TGSI_UTIL_SIGN_CLEAR;
}
}
else {
/* Accumulate the three negations. */
unsigned negate;
negate = reg->SrcRegister.Negate;
if( reg->SrcRegisterExtMod.Negate ) {
negate = !negate;
}
if( negate ) {
sign_mode = TGSI_UTIL_SIGN_TOGGLE;
}
else {
sign_mode = TGSI_UTIL_SIGN_KEEP;
}
}
return sign_mode;
}
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