From: Brian Paul <brianp@vmware.com>
Date: Tue, 4 May 2010 23:04:27 +0000 (-0600)
Subject: gallium/util: added is_format_compressed()
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0f0c0368faf38d73b0bbbb6e0a147bc94564d3a1;p=mesa.git

gallium/util: added is_format_compressed()
---

diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h
index 8ba076949b6..fd95bea1a7b 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -366,6 +366,26 @@ util_format_is_plain(enum pipe_format format)
    return desc->layout == UTIL_FORMAT_LAYOUT_PLAIN ? TRUE : FALSE;
 }
 
+static INLINE boolean 
+util_format_is_compressed(enum pipe_format format)
+{
+   const struct util_format_description *desc = util_format_description(format);
+
+   assert(desc);
+   if (!desc) {
+      return FALSE;
+   }
+
+   switch (desc->layout) {
+   case UTIL_FORMAT_LAYOUT_S3TC:
+   case UTIL_FORMAT_LAYOUT_RGTC:
+      /* XXX add other formats in the future */
+      return TRUE;
+   default:
+      return FALSE;
+   }
+}
+
 static INLINE boolean 
 util_format_is_s3tc(enum pipe_format format)
 {