1 files changed, 77 insertions, 0 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_util.c b/src/gallium/drivers/cell/spu/spu_util.c
new file mode 100644
index 0000000000..24057e29e3
--- /dev/null
+++ b/src/gallium/drivers/cell/spu/spu_util.c
@@ -0,0 +1,77 @@
+
+#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->Register,
+      component );
+}
+
+
+unsigned
+tgsi_util_get_full_src_register_sign_mode(
+   const struct  tgsi_full_src_register *reg,
+   unsigned component )
+{
+   unsigned sign_mode;
+
+   if( reg->RegisterExtMod.Absolute ) {
+      /* Consider only the post-abs negation. */
+
+      if( reg->RegisterExtMod.Negate ) {
+         sign_mode = TGSI_UTIL_SIGN_SET;
+      }
+      else {
+         sign_mode = TGSI_UTIL_SIGN_CLEAR;
+      }
+   }
+   else {
+      /* Accumulate the three negations. */
+
+      unsigned negate;
+
+      negate = reg->Register.Negate;
+      if( reg->RegisterExtMod.Negate ) {
+         negate = !negate;
+      }
+
+      if( negate ) {
+         sign_mode = TGSI_UTIL_SIGN_TOGGLE;
+      }
+      else {
+         sign_mode = TGSI_UTIL_SIGN_KEEP;
+      }
+   }
+
+   return sign_mode;
+}