util: Hook into libtxc_dxtn.so (WIP).

6 files changed, 738 insertions, 5 deletions

diff --git a/src/gallium/auxiliary/Makefile b/src/gallium/auxiliary/Makefile
index 4df3fbd132..4c629924b9 100644
--- a/src/gallium/auxiliary/Makefile
+++ b/src/gallium/auxiliary/Makefile
@@ -106,6 +106,7 @@ C_SOURCES = \
 	util/u_dl.c \
 	util/u_draw_quad.c \
 	util/u_format.c \
+	util/u_format_s3tc.c \
 	util/u_format_table.c \
 	util/u_format_tests.c \
 	util/u_gen_mipmap.c \
diff --git a/src/gallium/auxiliary/SConscript b/src/gallium/auxiliary/SConscript
index 0f1cc374c1..ed719f9f1a 100644
--- a/src/gallium/auxiliary/SConscript
+++ b/src/gallium/auxiliary/SConscript
@@ -140,6 +140,7 @@ source = [
     'util/u_dl.c',
     'util/u_draw_quad.c',
     'util/u_format.c',
+    'util/u_format_s3tc.c',
     'util/u_format_table.c',
     'util/u_format_tests.c',
     'util/u_gen_mipmap.c',
diff --git a/src/gallium/auxiliary/util/u_format_pack.py b/src/gallium/auxiliary/util/u_format_pack.py
index 73309cca5c..95c0c79be9 100644
--- a/src/gallium/auxiliary/util/u_format_pack.py
+++ b/src/gallium/auxiliary/util/u_format_pack.py
@@ -596,15 +596,17 @@ def generate(formats):
     suffix = 'float'
 
     for format in formats:
-        generate_format_unpack(format, channel, native_type, suffix)
-        generate_format_pack(format, channel, native_type, suffix)
-        generate_format_fetch(format, channel, native_type, suffix)
+        if format.layout != 's3tc':
+            generate_format_unpack(format, channel, native_type, suffix)
+            generate_format_pack(format, channel, native_type, suffix)
+            generate_format_fetch(format, channel, native_type, suffix)
 
     channel = Channel(UNSIGNED, True, 8)
     native_type = 'uint8_t'
     suffix = '8unorm'
 
     for format in formats:
-        generate_format_unpack(format, channel, native_type, suffix)
-        generate_format_pack(format, channel, native_type, suffix)
+        if format.layout != 's3tc':
+            generate_format_unpack(format, channel, native_type, suffix)
+            generate_format_pack(format, channel, native_type, suffix)
 
diff --git a/src/gallium/auxiliary/util/u_format_s3tc.c b/src/gallium/auxiliary/util/u_format_s3tc.c
new file mode 100644
index 0000000000..4fe00b0e43
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_format_s3tc.c
@@ -0,0 +1,510 @@
+/**************************************************************************
+ *
+ * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+ * Copyright (c) 2008 VMware, Inc.
+ *
+ * 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 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
+ * BRIAN PAUL 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.
+ *
+ **************************************************************************/
+
+#include "u_dl.h"
+#include "u_math.h"
+#include "u_format.h"
+#include "u_format_s3tc.h"
+
+
+#if defined(_WIN32) || defined(WIN32)
+#define DXTN_LIBNAME "dxtn.dll"
+#else
+#define DXTN_LIBNAME "libtxc_dxtn.so"
+#endif
+
+
+boolean util_format_s3tc_enabled = FALSE;
+
+util_format_dxtn_fetch_t util_format_dxt1_rgb_fetch = NULL;
+util_format_dxtn_fetch_t util_format_dxt1_rgba_fetch = NULL;
+util_format_dxtn_fetch_t util_format_dxt3_rgba_fetch = NULL;
+util_format_dxtn_fetch_t util_format_dxt5_rgba_fetch = NULL;
+
+util_format_dxtn_pack_t util_format_dxtn_pack = NULL;
+
+
+void
+util_format_s3tc_init(void)
+{
+   static struct util_dl_library *
+   library = NULL;
+
+   if (util_format_s3tc_enabled)
+      return;
+
+   if (!library) {
+      library = util_dl_open(DXTN_LIBNAME);
+      if (!library) {
+	 debug_printf("couldn't open " DXTN_LIBNAME ", software DXTn "
+	    "compression/decompression unavailable");
+      }
+      else {
+         util_format_dxt1_rgb_fetch = (util_format_dxtn_fetch_t)
+            util_dl_get_proc_address(library, "fetch_2d_texel_rgb_dxt1");
+         util_format_dxt1_rgba_fetch = (util_format_dxtn_fetch_t)
+            util_dl_get_proc_address(library, "fetch_2d_texel_rgba_dxt1");
+         util_format_dxt3_rgba_fetch = (util_format_dxtn_fetch_t)
+            util_dl_get_proc_address(library, "fetch_2d_texel_rgba_dxt3");
+         util_format_dxt5_rgba_fetch = (util_format_dxtn_fetch_t)
+            util_dl_get_proc_address(library, "fetch_2d_texel_rgba_dxt5");
+         util_format_dxtn_pack = (util_format_dxtn_pack_t)
+            util_dl_get_proc_address(library, "tx_compress_dxtn");
+
+         if (util_format_dxt1_rgb_fetch ||
+             util_format_dxt1_rgba_fetch ||
+             util_format_dxt3_rgba_fetch ||
+             util_format_dxt5_rgba_fetch ||
+             util_format_dxtn_pack) {
+            util_format_s3tc_enabled = TRUE;
+            debug_printf("software DXTn compression/decompression available");
+
+         } else {
+	    debug_printf("couldn't reference all symbols in "
+	       DXTN_LIBNAME ", software DXTn compression/decompression "
+	       "unavailable");
+         }
+      }
+   }
+}
+
+
+/*
+ * Pixel fetch.
+ */
+
+void
+util_format_dxt1_rgb_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt1_rgb_fetch) {
+      util_format_dxt1_rgb_fetch(0, src, i, j, dst);
+   }
+}
+
+void
+util_format_dxt1_rgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt1_rgba_fetch) {
+      util_format_dxt1_rgba_fetch(0, src, i, j, dst);
+   }
+}
+
+void
+util_format_dxt3_rgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt3_rgba_fetch) {
+      util_format_dxt3_rgba_fetch(0, src, i, j, dst);
+   }
+}
+
+void
+util_format_dxt5_rgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt5_rgba_fetch) {
+      util_format_dxt5_rgba_fetch(0, src, i, j, dst);
+   }
+}
+
+void
+util_format_dxt1_rgb_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt1_rgb_fetch) {
+      uint8_t tmp[4];
+      util_format_dxt1_rgb_fetch(0, src, i, j, tmp);
+      dst[0] = ubyte_to_float(tmp[0]);
+      dst[1] = ubyte_to_float(tmp[1]);
+      dst[2] = ubyte_to_float(tmp[2]);
+      dst[3] = 1.0;
+   }
+}
+
+void
+util_format_dxt1_rgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt1_rgba_fetch) {
+      uint8_t tmp[4];
+      util_format_dxt1_rgba_fetch(0, src, i, j, tmp);
+      dst[0] = ubyte_to_float(tmp[0]);
+      dst[1] = ubyte_to_float(tmp[1]);
+      dst[2] = ubyte_to_float(tmp[2]);
+      dst[3] = ubyte_to_float(tmp[3]);
+   }
+}
+
+void
+util_format_dxt3_rgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt3_rgba_fetch) {
+      uint8_t tmp[4];
+      util_format_dxt3_rgba_fetch(0, src, i, j, tmp);
+      dst[0] = ubyte_to_float(tmp[0]);
+      dst[1] = ubyte_to_float(tmp[1]);
+      dst[2] = ubyte_to_float(tmp[2]);
+      dst[3] = ubyte_to_float(tmp[3]);
+   }
+}
+
+void
+util_format_dxt5_rgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   if (util_format_dxt5_rgba_fetch) {
+      uint8_t tmp[4];
+      util_format_dxt5_rgba_fetch(0, src, i, j, tmp);
+      dst[0] = ubyte_to_float(tmp[0]);
+      dst[1] = ubyte_to_float(tmp[1]);
+      dst[2] = ubyte_to_float(tmp[2]);
+      dst[3] = ubyte_to_float(tmp[3]);
+   }
+}
+
+
+/*
+ * Block decompression.
+ *
+ * FIXME
+ */
+
+void
+util_format_dxt1_rgb_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt1_rgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+
+}
+
+void
+util_format_dxt3_rgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt5_rgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt1_rgb_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   if (util_format_dxt1_rgb_fetch) {
+      unsigned x, y, i, j;
+      for(y = 0; y < height; y += 4) {
+         const uint8_t *src = src_row;
+         for(x = 0; x < width; x += 4) {
+            for(j = 0; j < 4; ++j) {
+               for(i = 0; i < 4; ++i) {
+                  float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
+                  uint8_t tmp[4];
+                  util_format_dxt1_rgb_fetch(0, src, i, j, tmp);
+                  dst[0] = ubyte_to_float(tmp[0]);
+                  dst[1] = ubyte_to_float(tmp[1]);
+                  dst[2] = ubyte_to_float(tmp[2]);
+                  dst[3] = 1.0;
+               }
+            }
+            src += 8;
+         }
+         src_row += src_stride;
+      }
+   }
+}
+
+void
+util_format_dxt1_rgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   if (util_format_dxt1_rgba_fetch) {
+      unsigned x, y, i, j;
+      for(y = 0; y < height; y += 4) {
+         const uint8_t *src = src_row;
+         for(x = 0; x < width; x += 4) {
+            for(j = 0; j < 4; ++j) {
+               for(i = 0; i < 4; ++i) {
+                  float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
+                  uint8_t tmp[4];
+                  util_format_dxt1_rgba_fetch(0, src, i, j, tmp);
+                  dst[0] = ubyte_to_float(tmp[0]);
+                  dst[1] = ubyte_to_float(tmp[1]);
+                  dst[2] = ubyte_to_float(tmp[2]);
+                  dst[3] = ubyte_to_float(tmp[3]);
+               }
+            }
+            src += 8;
+         }
+         src_row += src_stride;
+      }
+   }
+}
+
+void
+util_format_dxt3_rgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   if (util_format_dxt3_rgba_fetch) {
+      unsigned x, y, i, j;
+      for(y = 0; y < height; y += 4) {
+         const uint8_t *src = src_row;
+         for(x = 0; x < width; x += 4) {
+            for(j = 0; j < 4; ++j) {
+               for(i = 0; i < 4; ++i) {
+                  float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
+                  uint8_t tmp[4];
+                  util_format_dxt3_rgba_fetch(0, src, i, j, tmp);
+                  dst[0] = ubyte_to_float(tmp[0]);
+                  dst[1] = ubyte_to_float(tmp[1]);
+                  dst[2] = ubyte_to_float(tmp[2]);
+                  dst[3] = ubyte_to_float(tmp[3]);
+               }
+            }
+            src += 16;
+         }
+         src_row += src_stride;
+      }
+   }
+}
+
+void
+util_format_dxt5_rgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   if (util_format_dxt5_rgba_fetch) {
+      unsigned x, y, i, j;
+      for(y = 0; y < height; y += 4) {
+         const uint8_t *src = src_row;
+         for(x = 0; x < width; x += 4) {
+            for(j = 0; j < 4; ++j) {
+               for(i = 0; i < 4; ++i) {
+                  float *dst = dst_row + (y + j)*dst_stride/sizeof(*dst_row) + (x + i)*4;
+                  uint8_t tmp[4];
+                  util_format_dxt5_rgba_fetch(0, src, i, j, tmp);
+                  dst[0] = ubyte_to_float(tmp[0]);
+                  dst[1] = ubyte_to_float(tmp[1]);
+                  dst[2] = ubyte_to_float(tmp[2]);
+                  dst[3] = ubyte_to_float(tmp[3]);
+               }
+            }
+            src += 16;
+         }
+         src_row += src_stride;
+      }
+   }
+}
+
+
+/*
+ * Block compression.
+ *
+ * FIXME
+ */
+
+void
+util_format_dxt1_rgb_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt1_rgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt3_rgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt5_rgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt1_rgb_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt1_rgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt3_rgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+void
+util_format_dxt5_rgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+}
+
+
+/*
+ * SRGB variants.
+ *
+ * FIXME: shunts to RGB for now
+ */
+
+void
+util_format_dxt1_srgb_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgb_unpack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgb_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgb_pack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgb_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt1_rgb_fetch_8unorm(dst, src, i, j);
+}
+
+void
+util_format_dxt1_srgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgba_unpack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgba_pack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt1_rgba_fetch_8unorm(dst, src, i, j);
+}
+
+void
+util_format_dxt3_srgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt3_rgba_unpack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt3_srgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt3_rgba_pack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt3_srgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt3_rgba_fetch_8unorm(dst, src, i, j);
+}
+
+void
+util_format_dxt5_srgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt5_rgba_unpack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt5_srgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt5_rgba_pack_8unorm(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt5_srgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt5_rgba_fetch_8unorm(dst, src, i, j);
+}
+
+void
+util_format_dxt1_srgb_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgb_unpack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgb_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgb_pack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgb_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt1_rgb_fetch_float(dst, src, i, j);
+}
+
+void
+util_format_dxt1_srgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgba_unpack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt1_rgba_pack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt1_srgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt1_rgba_fetch_float(dst, src, i, j);
+}
+
+void
+util_format_dxt3_srgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt3_rgba_unpack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt3_srgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt3_rgba_pack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt3_srgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt3_rgba_fetch_float(dst, src, i, j);
+}
+
+void
+util_format_dxt5_srgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt5_rgba_unpack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt5_srgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height)
+{
+   util_format_dxt5_rgba_pack_float(dst_row, dst_stride, src_row, src_stride, width, height);
+}
+
+void
+util_format_dxt5_srgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j)
+{
+   util_format_dxt5_rgba_fetch_float(dst, src, i, j);
+}
+
diff --git a/src/gallium/auxiliary/util/u_format_s3tc.h b/src/gallium/auxiliary/util/u_format_s3tc.h
new file mode 100644
index 0000000000..5c3a9dd22c
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_format_s3tc.h
@@ -0,0 +1,218 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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, 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 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 COPYRIGHT HOLDERS, AUTHORS AND/OR ITS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ **************************************************************************/
+
+
+#ifndef U_FORMAT_S3TC_H_
+#define U_FORMAT_S3TC_H_
+
+
+#include "pipe/p_compiler.h"
+
+
+enum util_format_dxtn {
+  UTIL_FORMAT_DXT1_RGB = 0x83F0,
+  UTIL_FORMAT_DXT1_RGBA = 0x83F1,
+  UTIL_FORMAT_DXT3_RGBA = 0x83F2,
+  UTIL_FORMAT_DXT5_RGBA = 0x83F3
+};
+
+
+typedef void
+(*util_format_dxtn_fetch_t)( int src_stride,
+                             const uint8_t *src,
+                             int col, int row,
+                             uint8_t *dst );
+
+typedef void
+(*util_format_dxtn_pack_t)( int src_comps,
+                            int width, int height,
+                            const uint8_t *src,
+                            enum util_format_dxtn dst_format,
+                            uint8_t *dst,
+                            int dst_stride);
+
+extern boolean util_format_s3tc_enabled;
+
+extern util_format_dxtn_fetch_t util_format_dxt1_rgb_fetch;
+extern util_format_dxtn_fetch_t util_format_dxt1_rgba_fetch;
+extern util_format_dxtn_fetch_t util_format_dxt3_rgba_fetch;
+extern util_format_dxtn_fetch_t util_format_dxt5_rgba_fetch;
+
+extern util_format_dxtn_pack_t util_format_dxtn_pack;
+
+
+void
+util_format_s3tc_init(void);
+
+
+void
+util_format_dxt1_rgb_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgb_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgb_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt1_rgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt3_rgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_rgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_rgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt5_rgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_rgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_rgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt1_srgb_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgb_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgb_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt1_srgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt3_srgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_srgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_srgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt5_srgba_unpack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_srgba_pack_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_srgba_fetch_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+
+void
+util_format_dxt1_rgb_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgb_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgb_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt1_rgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_rgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt3_rgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_rgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_rgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt5_rgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_rgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_rgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt1_srgb_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgb_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgb_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt1_srgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt1_srgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt3_srgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_srgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt3_srgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_dxt5_srgba_unpack_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_srgba_pack_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_dxt5_srgba_fetch_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+
+#endif /* U_FORMAT_S3TC_H_ */
diff --git a/src/gallium/auxiliary/util/u_format_table.py b/src/gallium/auxiliary/util/u_format_table.py
index 1309044097..94a4331b15 100755
--- a/src/gallium/auxiliary/util/u_format_table.py
+++ b/src/gallium/auxiliary/util/u_format_table.py
@@ -86,6 +86,7 @@ def write_format_table(formats):
     print __doc__.strip()
     print
     print '#include "u_format.h"'
+    print '#include "u_format_s3tc.h"'
     print
     
     u_format_pack.generate(formats)