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authorJosé Fonseca <[email protected]>2010-03-29 17:29:27 +0100
committerJosé Fonseca <[email protected]>2010-03-29 17:31:34 +0100
commitb9ad95d3ee9178dce9320d28b20d23d97370f7bd (patch)
treeb00efb03555d911258da9bf794bf5226c1acb589 /src/gallium/auxiliary/util
parent37877b192e4f9e753f5e837520090206b342a6ea (diff)
util: Distinguish between the different compression formats.
In particular, all current uses of util_format_is_compressed() actually mean s3tc.
Diffstat (limited to 'src/gallium/auxiliary/util')
-rw-r--r--src/gallium/auxiliary/util/u_format.csv20
-rw-r--r--src/gallium/auxiliary/util/u_format.h20
2 files changed, 26 insertions, 14 deletions
diff --git a/src/gallium/auxiliary/util/u_format.csv b/src/gallium/auxiliary/util/u_format.csv
index d2a925141b1..d819bbbde1c 100644
--- a/src/gallium/auxiliary/util/u_format.csv
+++ b/src/gallium/auxiliary/util/u_format.csv
@@ -110,14 +110,18 @@ PIPE_FORMAT_UYVY , subsampled, 2, 1, x32 , , , , xyz
PIPE_FORMAT_YUYV , subsampled, 2, 1, x32 , , , , xyz1, yuv
# Compressed formats
-PIPE_FORMAT_DXT1_RGB , compressed, 4, 4, x64 , , , , xyz1, rgb
-PIPE_FORMAT_DXT1_RGBA , compressed, 4, 4, x64 , , , , xyzw, rgb
-PIPE_FORMAT_DXT3_RGBA , compressed, 4, 4, x128, , , , xyzw, rgb
-PIPE_FORMAT_DXT5_RGBA , compressed, 4, 4, x128, , , , xyzw, rgb
-PIPE_FORMAT_DXT1_SRGB , compressed, 4, 4, x64 , , , , xyz1, srgb
-PIPE_FORMAT_DXT1_SRGBA , compressed, 4, 4, x64 , , , , xyzw, srgb
-PIPE_FORMAT_DXT3_SRGBA , compressed, 4, 4, x128, , , , xyzw, srgb
-PIPE_FORMAT_DXT5_SRGBA , compressed, 4, 4, x128, , , , xyzw, srgb
+# - http://en.wikipedia.org/wiki/S3_Texture_Compression
+# - http://www.opengl.org/registry/specs/EXT/texture_compression_s3tc.txt
+# - http://www.opengl.org/registry/specs/ARB/texture_compression_rgtc.txt
+# - http://msdn.microsoft.com/en-us/library/bb694531.aspx
+PIPE_FORMAT_DXT1_RGB , s3tc, 4, 4, x64 , , , , xyz1, rgb
+PIPE_FORMAT_DXT1_RGBA , s3tc, 4, 4, x64 , , , , xyzw, rgb
+PIPE_FORMAT_DXT3_RGBA , s3tc, 4, 4, x128, , , , xyzw, rgb
+PIPE_FORMAT_DXT5_RGBA , s3tc, 4, 4, x128, , , , xyzw, rgb
+PIPE_FORMAT_DXT1_SRGB , s3tc, 4, 4, x64 , , , , xyz1, srgb
+PIPE_FORMAT_DXT1_SRGBA , s3tc, 4, 4, x64 , , , , xyzw, srgb
+PIPE_FORMAT_DXT3_SRGBA , s3tc, 4, 4, x128, , , , xyzw, srgb
+PIPE_FORMAT_DXT5_SRGBA , s3tc, 4, 4, x128, , , , xyzw, srgb
# 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 c08fdcafcc8..98d4b98ebb5 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -56,15 +56,23 @@ enum util_format_layout {
*
* This is for formats like YV12 where there is less than one sample per
* pixel.
- *
- * XXX: This could actually b
*/
UTIL_FORMAT_LAYOUT_SUBSAMPLED = 3,
/**
- * An unspecified compression algorithm.
+ * S3 Texture Compression formats.
+ */
+ UTIL_FORMAT_LAYOUT_S3TC = 4,
+
+ /**
+ * Red-Green Texture Compression formats.
+ */
+ UTIL_FORMAT_LAYOUT_RGTC = 5,
+
+ /**
+ * Everything else that doesn't fit in any of the above layouts.
*/
- UTIL_FORMAT_LAYOUT_COMPRESSED = 4
+ UTIL_FORMAT_LAYOUT_OTHER = 6
};
@@ -210,7 +218,7 @@ util_format_name(enum pipe_format format)
}
static INLINE boolean
-util_format_is_compressed(enum pipe_format format)
+util_format_is_s3tc(enum pipe_format format)
{
const struct util_format_description *desc = util_format_description(format);
@@ -219,7 +227,7 @@ util_format_is_compressed(enum pipe_format format)
return FALSE;
}
- return desc->layout == UTIL_FORMAT_LAYOUT_COMPRESSED ? TRUE : FALSE;
+ return desc->layout == UTIL_FORMAT_LAYOUT_S3TC ? TRUE : FALSE;
}
static INLINE boolean