gallium: add basic support for BPTC formats

Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>

7 files changed, 159 insertions, 3 deletions

diff --git a/src/gallium/auxiliary/util/u_format.c b/src/gallium/auxiliary/util/u_format.c
index a53ed6f297b..d53dd7884f0 100644
--- a/src/gallium/auxiliary/util/u_format.c
+++ b/src/gallium/auxiliary/util/u_format.c
@@ -496,6 +496,10 @@ util_format_fits_8unorm(const struct util_format_description *format_desc)
           format_desc->format == PIPE_FORMAT_LATC2_SNORM)
          return FALSE;
       return TRUE;
+   case UTIL_FORMAT_LAYOUT_BPTC:
+      if (format_desc->format == PIPE_FORMAT_BPTC_RGBA_UNORM)
+         return TRUE;
+      return FALSE;
 
    case UTIL_FORMAT_LAYOUT_PLAIN:
       /*
diff --git a/src/gallium/auxiliary/util/u_format.csv b/src/gallium/auxiliary/util/u_format.csv
index 8aa5c364de9..17034049dea 100644
--- a/src/gallium/auxiliary/util/u_format.csv
+++ b/src/gallium/auxiliary/util/u_format.csv
@@ -160,6 +160,7 @@ PIPE_FORMAT_R8G8Bx_SNORM          , other,      1,  1, sn8 , sn8 ,     ,     , x
 # - http://www.opengl.org/registry/specs/EXT/texture_compression_s3tc.txt
 # - http://www.opengl.org/registry/specs/ARB/texture_compression_rgtc.txt
 # - http://www.opengl.org/registry/specs/EXT/texture_compression_latc.txt
+# - http://www.opengl.org/registry/specs/ARB/texture_compression_bptc.txt
 # - http://www.khronos.org/registry/gles/extensions/OES/OES_compressed_ETC1_RGB8_texture.txt
 # - http://msdn.microsoft.com/en-us/library/bb694531.aspx
 PIPE_FORMAT_DXT1_RGB              , s3tc, 4, 4, x64 ,     ,     ,     , xyz1, rgb
@@ -183,6 +184,11 @@ PIPE_FORMAT_LATC2_SNORM           , rgtc, 4, 4, x128,     ,     ,     , xxxy, rg
 
 PIPE_FORMAT_ETC1_RGB8             ,  etc, 4, 4, x64,      ,     ,     , xyz1, rgb
 
+PIPE_FORMAT_BPTC_RGBA_UNORM       , bptc, 4, 4, x128,     ,     ,     , xyzw, rgb
+PIPE_FORMAT_BPTC_SRGBA            , bptc, 4, 4, x128,     ,     ,     , xyzw, srgb
+PIPE_FORMAT_BPTC_RGB_FLOAT        , bptc, 4, 4, x128,     ,     ,     , xyz1, rgb
+PIPE_FORMAT_BPTC_RGB_UFLOAT       , bptc, 4, 4, x128,     ,     ,     , xyz1, rgb
+
 # Straightforward D3D10-like formats (also used for 
 # vertex buffer element description)
 # 
diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h
index 2e2bf0240dd..df31400af90 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -79,9 +79,14 @@ enum util_format_layout {
    UTIL_FORMAT_LAYOUT_ETC = 6,
 
    /**
+    * BC6/7 Texture Compression
+    */
+   UTIL_FORMAT_LAYOUT_BPTC = 7,
+
+   /**
     * Everything else that doesn't fit in any of the above layouts.
     */
-   UTIL_FORMAT_LAYOUT_OTHER = 7
+   UTIL_FORMAT_LAYOUT_OTHER = 8
 };
 
 
@@ -475,6 +480,7 @@ util_format_is_compressed(enum pipe_format format)
    case UTIL_FORMAT_LAYOUT_S3TC:
    case UTIL_FORMAT_LAYOUT_RGTC:
    case UTIL_FORMAT_LAYOUT_ETC:
+   case UTIL_FORMAT_LAYOUT_BPTC:
       /* XXX add other formats in the future */
       return TRUE;
    default:
@@ -911,6 +917,8 @@ util_format_srgb(enum pipe_format format)
       return PIPE_FORMAT_DXT5_SRGBA;
    case PIPE_FORMAT_B5G6R5_UNORM:
       return PIPE_FORMAT_B5G6R5_SRGB;
+   case PIPE_FORMAT_BPTC_RGBA_UNORM:
+      return PIPE_FORMAT_BPTC_SRGBA;
    default:
       return PIPE_FORMAT_NONE;
    }
@@ -956,6 +964,8 @@ util_format_linear(enum pipe_format format)
       return PIPE_FORMAT_DXT5_RGBA;
    case PIPE_FORMAT_B5G6R5_SRGB:
       return PIPE_FORMAT_B5G6R5_UNORM;
+   case PIPE_FORMAT_BPTC_SRGBA:
+      return PIPE_FORMAT_BPTC_RGBA_UNORM;
    default:
       return format;
    }
diff --git a/src/gallium/auxiliary/util/u_format_bptc.c b/src/gallium/auxiliary/util/u_format_bptc.c
new file mode 100644
index 00000000000..196220ee05c
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_format_bptc.c
@@ -0,0 +1,26 @@
+#include "u_format.h"
+#include "u_format_bptc.h"
+
+#define fake(format) \
+void \
+util_format_##format##_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j) {assert(0);} \
+\
+void \
+util_format_##format##_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height) {assert(0);} \
+\
+void \
+util_format_##format##_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height) {assert(0);} \
+\
+void \
+util_format_##format##_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height) {assert(0);} \
+\
+void \
+util_format_##format##_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height) {assert(0);} \
+\
+void \
+util_format_##format##_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j) {assert(0);}
+
+fake(bptc_rgba_unorm)
+fake(bptc_srgba)
+fake(bptc_rgb_float)
+fake(bptc_rgb_ufloat)
diff --git a/src/gallium/auxiliary/util/u_format_bptc.h b/src/gallium/auxiliary/util/u_format_bptc.h
new file mode 100644
index 00000000000..f67d071ee5d
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_format_bptc.h
@@ -0,0 +1,109 @@
+/**************************************************************************
+ *
+ * Copyright 2011 Red Hat 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_BPTC_H_
+#define U_FORMAT_BPTC_H_
+
+void
+util_format_bptc_rgba_unorm_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_bptc_rgba_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgba_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgba_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgba_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgba_unorm_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+
+
+void
+util_format_bptc_srgba_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_bptc_srgba_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_srgba_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_srgba_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_srgba_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_srgba_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+
+
+void
+util_format_bptc_rgb_float_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_bptc_rgb_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_float_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_float_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+
+void
+util_format_bptc_rgb_ufloat_fetch_rgba_8unorm(uint8_t *dst, const uint8_t *src, unsigned i, unsigned j);
+
+void
+util_format_bptc_rgb_ufloat_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_ufloat_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_ufloat_unpack_rgba_float(float *dst_row, unsigned dst_stride, const uint8_t *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_ufloat_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride, const float *src_row, unsigned src_stride, unsigned width, unsigned height);
+
+void
+util_format_bptc_rgb_ufloat_fetch_rgba_float(float *dst, const uint8_t *src, unsigned i, unsigned j);
+
+
+#endif
diff --git a/src/gallium/auxiliary/util/u_format_pack.py b/src/gallium/auxiliary/util/u_format_pack.py
index a553e2346a9..6ccf04c29e7 100644
--- a/src/gallium/auxiliary/util/u_format_pack.py
+++ b/src/gallium/auxiliary/util/u_format_pack.py
@@ -659,7 +659,7 @@ def generate_format_fetch(format, dst_channel, dst_native_type, dst_suffix):
 
 
 def is_format_hand_written(format):
-    return format.layout in ('s3tc', 'rgtc', 'etc', 'subsampled', 'other') or format.colorspace == ZS
+    return format.layout in ('s3tc', 'rgtc', 'etc', 'bptc', 'subsampled', 'other') or format.colorspace == ZS
 
 
 def generate(formats):
diff --git a/src/gallium/auxiliary/util/u_format_table.py b/src/gallium/auxiliary/util/u_format_table.py
index 81fd3996f5d..ad582e4f54c 100755
--- a/src/gallium/auxiliary/util/u_format_table.py
+++ b/src/gallium/auxiliary/util/u_format_table.py
@@ -90,6 +90,7 @@ def write_format_table(formats):
     print '#include "u_format_rgtc.h"'
     print '#include "u_format_latc.h"'
     print '#include "u_format_etc.h"'
+    print '#include "u_format_bptc.h"'
     print
     
     u_format_pack.generate(formats)
@@ -141,7 +142,7 @@ def write_format_table(formats):
         if format.colorspace != ZS and not format.is_pure_color():
             print "   &util_format_%s_unpack_rgba_8unorm," % format.short_name() 
             print "   &util_format_%s_pack_rgba_8unorm," % format.short_name() 
-            if format.layout == 's3tc' or format.layout == 'rgtc':
+            if format.layout == 's3tc' or format.layout == 'rgtc' or format.layout == 'bptc':
                 print "   &util_format_%s_fetch_rgba_8unorm," % format.short_name()
             else:
                 print "   NULL, /* fetch_rgba_8unorm */"