util: move shared rgtc code to util (v2)

This was being shared using a ../../ get out of gallium into
mesa, and I swore when I did it I'd fix things when we got a util
dir, we did, so I have.

v2: move RGTC_DEBUG define

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/src/util/rgtc.h b/src/util/rgtc.h
new file mode 100644
index 0000000..6bba9f2
--- /dev/null
+++ b/src/util/rgtc.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright © 2014 Red Hat
+ *
+ * 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
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 _RGTC_H
+#define _RGTC_H
+
+void util_format_unsigned_fetch_texel_rgtc(unsigned srcRowStride, const unsigned char *pixdata,
+                                           unsigned i, unsigned j, unsigned char *value, unsigned comps);
+
+void util_format_signed_fetch_texel_rgtc(unsigned srcRowStride, const signed char *pixdata,
+                                           unsigned i, unsigned j, signed char *value, unsigned comps);
+
+void util_format_unsigned_encode_rgtc_ubyte(unsigned char *blkaddr, unsigned char srccolors[4][4],
+                                            int numxpixels, int numypixels);
+
+void util_format_signed_encode_rgtc_ubyte(signed char *blkaddr, signed char srccolors[4][4],
+                                            int numxpixels, int numypixels);
+#endif /* _RGTC_H */