1 files changed, 64 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_shader_semantics.h b/src/gallium/drivers/r300/r300_shader_semantics.h
new file mode 100644
index 00000000000..85184e2cfd7
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_shader_semantics.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2009 Marek Olšák <[email protected]>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE. */
+
+#ifndef R300_SHADER_SEMANTICS_H
+#define R300_SHADER_SEMANTICS_H
+
+#define ATTR_UNUSED             (-1)
+#define ATTR_COLOR_COUNT        2
+#define ATTR_GENERIC_COUNT      16
+
+/* This structure contains information about what attributes are written by VS
+ * or read by FS. (but not both) It's much easier to work with than
+ * tgsi_shader_info.
+ *
+ * The variables contain indices to tgsi_shader_info semantics and those
+ * indices are nothing else than input/output register numbers. */
+struct r300_shader_semantics {
+    int pos;
+    int psize;
+    int color[ATTR_COLOR_COUNT];
+    int bcolor[ATTR_COLOR_COUNT];
+    int generic[ATTR_GENERIC_COUNT];
+    int fog;
+};
+
+static INLINE void r300_shader_semantics_reset(
+    struct r300_shader_semantics* info)
+{
+    int i;
+
+    info->pos = ATTR_UNUSED;
+    info->psize = ATTR_UNUSED;
+    info->fog = ATTR_UNUSED;
+
+    for (i = 0; i < ATTR_COLOR_COUNT; i++) {
+        info->color[i] = ATTR_UNUSED;
+        info->bcolor[i] = ATTR_UNUSED;
+    }
+
+    for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
+        info->generic[i] = ATTR_UNUSED;
+    }
+}
+
+#endif