return 0;
}
-unsigned
-tgsi_util_get_src_register_extswizzle(
- const struct tgsi_src_register_ext_swz *reg,
- unsigned component )
-{
- switch( component ) {
- case 0:
- return reg->ExtSwizzleX;
- case 1:
- return reg->ExtSwizzleY;
- case 2:
- return reg->ExtSwizzleZ;
- case 3:
- return reg->ExtSwizzleW;
- default:
- ASSERT( 0 );
- }
- return 0;
-}
unsigned
tgsi_util_get_full_src_register_extswizzle(
const struct tgsi_full_src_register *reg,
unsigned component )
{
- unsigned swizzle;
-
- /*
- * First, calculate the extended swizzle for a given channel. This will give
- * us either a channel index into the simple swizzle or a constant 1 or 0.
- */
- swizzle = tgsi_util_get_src_register_extswizzle(
- ®->SrcRegisterExtSwz,
+ return tgsi_util_get_src_register_swizzle(
+ reg->SrcRegister,
component );
-
- ASSERT (TGSI_SWIZZLE_X == TGSI_EXTSWIZZLE_X);
- ASSERT (TGSI_SWIZZLE_Y == TGSI_EXTSWIZZLE_Y);
- ASSERT (TGSI_SWIZZLE_Z == TGSI_EXTSWIZZLE_Z);
- ASSERT (TGSI_SWIZZLE_W == TGSI_EXTSWIZZLE_W);
- ASSERT (TGSI_EXTSWIZZLE_ZERO > TGSI_SWIZZLE_W);
- ASSERT (TGSI_EXTSWIZZLE_ONE > TGSI_SWIZZLE_W);
-
- /*
- * Second, calculate the simple swizzle for the unswizzled channel index.
- * Leave the constants intact, they are not affected by the simple swizzle.
- */
- if( swizzle <= TGSI_SWIZZLE_W ) {
- swizzle = tgsi_util_get_src_register_swizzle(
- ®->SrcRegister,
- component );
- }
-
- return swizzle;
}
unsigned