---
src/gallium/auxiliary/util/u_semantics.h | 123 ++++++++++++++++++++++++++++++
1 files changed, 123 insertions(+), 0 deletions(-)
create mode 100644 src/gallium/auxiliary/util/u_semantics.h
diff --git a/src/gallium/auxiliary/util/u_semantics.h
b/src/gallium/auxiliary/util/u_semantics.h
new file mode 100644
index 0000000..d620619
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_semantics.h
@@ -0,0 +1,123 @@
+#ifndef U_SEMANTICS_H_
+#define U_SEMANTICS_H_
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_shader_tokens.h"
+
+/* same as SM3 values */
+#define TGSI_SEMANTIC_BYTE_POSITION 0
+#define TGSI_SEMANTIC_BYTE_PSIZE (4 << 4)
+#define TGSI_SEMANTIC_BYTE_COLOR0 (10 << 4)
+#define TGSI_SEMANTIC_BYTE_COLOR1 (TGSI_SEMANTIC_BYTE_COLOR0 + 1)
+#define TGSI_SEMANTIC_BYTE_FOG (11 << 4)
+#define TGSI_SEMANTIC_BYTE_BCOLOR0 (14 << 4)
+#define TGSI_SEMANTIC_BYTE_BCOLOR1 (TGSI_SEMANTIC_BYTE_BCOLOR0 + 1)
+#define TGSI_SEMANTIC_BYTE_TGSI (15 << 4)
+
+static INLINE unsigned char
+pipe_semantic_to_byte(unsigned name, unsigned index)
+{
+ switch (name)
+ {
+ case TGSI_SEMANTIC_POSITION:
+ return TGSI_SEMANTIC_BYTE_POSITION;
+ case TGSI_SEMANTIC_PSIZE:
+ return TGSI_SEMANTIC_BYTE_PSIZE;
+ case TGSI_SEMANTIC_FOG:
+ return TGSI_SEMANTIC_BYTE_FOG;
+ case TGSI_SEMANTIC_COLOR:
+ return TGSI_SEMANTIC_BYTE_COLOR0 + index;
+ case TGSI_SEMANTIC_GENERIC:
+ ++index;
+ if(index >= TGSI_SEMANTIC_BYTE_PSIZE)
+ {
+ ++index;
+ if(index >= TGSI_SEMANTIC_BYTE_COLOR0)
+ {
+ index += 2;
+ if(index >= TGSI_SEMANTIC_BYTE_FOG)
+ ++index;
+ }
+ }
+ return index;
+ case TGSI_SEMANTIC_BCOLOR:
+ return TGSI_SEMANTIC_BYTE_BCOLOR0 + index;
+ default:
+ return TGSI_SEMANTIC_BYTE_TGSI + name;
+ }
+}
+
+/* this fits BCOLOR in the SM3 range, but is not reversible */
+static INLINE unsigned char
+pipe_semantic_to_byte_sm3(unsigned name, unsigned index)
+{
+ if(name == TGSI_SEMANTIC_BCOLOR)
+ return TGSI_SEMANTIC_BYTE_BCOLOR0 - 1 - index;
+ return pipe_semantic_to_byte(name, index);
+}
+
+static INLINE unsigned
+pipe_semantic_name_from_byte(unsigned char value)
+{
+ switch (value)
+ {
+ case TGSI_SEMANTIC_BYTE_POSITION:
+ return TGSI_SEMANTIC_POSITION;
+ case TGSI_SEMANTIC_BYTE_PSIZE:
+ return TGSI_SEMANTIC_PSIZE;
+ case TGSI_SEMANTIC_BYTE_FOG:
+ return TGSI_SEMANTIC_FOG;
+ case TGSI_SEMANTIC_BYTE_COLOR0:
+ case TGSI_SEMANTIC_BYTE_COLOR1:
+ return TGSI_SEMANTIC_COLOR;
+ case TGSI_SEMANTIC_BYTE_BCOLOR0:
+ case TGSI_SEMANTIC_BYTE_BCOLOR1:
+ return TGSI_SEMANTIC_BCOLOR;
+ default:
+ if(value < TGSI_SEMANTIC_BYTE_TGSI)
+ return TGSI_SEMANTIC_GENERIC;
+ else
+ return value - TGSI_SEMANTIC_BYTE_TGSI;
+ }
+}
+
+static INLINE unsigned
+pipe_semantic_index_from_byte(unsigned char value)
+{
+ if(value == TGSI_SEMANTIC_BYTE_POSITION)
+ return 0;
+
+ if(value <= TGSI_SEMANTIC_BYTE_PSIZE)
+ {
+ if(value < TGSI_SEMANTIC_BYTE_PSIZE)
+ return value - 1;
+ else
+ return 0;
+ }
+
+ if(value < (TGSI_SEMANTIC_BYTE_COLOR0 + 2))
+ {
+ if(value < TGSI_SEMANTIC_BYTE_COLOR0)
+ return value - 2;
+ else
+ return value - TGSI_SEMANTIC_BYTE_COLOR0;
+ }
+
+ if(value <= TGSI_SEMANTIC_BYTE_FOG)
+ {
+ if(value < TGSI_SEMANTIC_BYTE_FOG)
+ return value - 4;
+ else
+ return 0;
+ }
+
+ if(value < TGSI_SEMANTIC_BYTE_BCOLOR0)
+ return value - 5;
+
+ if(value == (TGSI_SEMANTIC_BYTE_BCOLOR1))
+ return 1;
+
+ return 0;
+}
+
+#endif /* U_SEMANTICS_H_ */
--
1.7.0.1.147.g6d84b
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