From: José Fonseca <jfonseca@vmware.com>
Date: Tue, 10 Aug 2010 15:32:29 +0000 (+0100)
Subject: util: Add util_format_srgb().
X-Git-Tag: android-x86-2.2~2465
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=247b253d326819e9c62801d741b3740a27aeaf8a;p=android-x86%2Fexternal-mesa.git

util: Add util_format_srgb().

To convert RGB -> SRGB format.
---

diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h
index 38254b1096d..8e786a390a0 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -631,6 +631,44 @@ util_format_has_alpha(enum pipe_format format)
 }
 
 /**
+ * Return the matching SRGB format, or PIPE_FORMAT_NONE if none.
+ */
+static INLINE enum pipe_format
+util_format_srgb(enum pipe_format format)
+{
+   switch (format) {
+   case PIPE_FORMAT_L8_UNORM:
+      return PIPE_FORMAT_L8_SRGB;
+   case PIPE_FORMAT_L8A8_UNORM:
+      return PIPE_FORMAT_L8A8_SRGB;
+   case PIPE_FORMAT_R8G8B8_UNORM:
+      return PIPE_FORMAT_R8G8B8_SRGB;
+   case PIPE_FORMAT_A8B8G8R8_UNORM:
+      return PIPE_FORMAT_A8B8G8R8_SRGB;
+   case PIPE_FORMAT_X8B8G8R8_UNORM:
+      return PIPE_FORMAT_X8B8G8R8_SRGB;
+   case PIPE_FORMAT_B8G8R8A8_UNORM:
+      return PIPE_FORMAT_B8G8R8A8_SRGB;
+   case PIPE_FORMAT_B8G8R8X8_UNORM:
+      return PIPE_FORMAT_B8G8R8X8_SRGB;
+   case PIPE_FORMAT_A8R8G8B8_UNORM:
+      return PIPE_FORMAT_A8R8G8B8_SRGB;
+   case PIPE_FORMAT_X8R8G8B8_UNORM:
+      return PIPE_FORMAT_X8R8G8B8_SRGB;
+   case PIPE_FORMAT_DXT1_RGB:
+      return PIPE_FORMAT_DXT1_SRGB;
+   case PIPE_FORMAT_DXT1_RGBA:
+      return PIPE_FORMAT_DXT1_SRGBA;
+   case PIPE_FORMAT_DXT3_RGBA:
+      return PIPE_FORMAT_DXT3_SRGBA;
+   case PIPE_FORMAT_DXT5_RGBA:
+      return PIPE_FORMAT_DXT5_SRGBA;
+   default:
+      return PIPE_FORMAT_NONE;
+   }
+}
+
+/**
  * Return the number of components stored.
  * Formats with block size != 1x1 will always have 1 component (the block).
  */