mesa: Add helper function _mesa_is_format_integer()

This function will be used in the following patch.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index fb2501c..5c67011 100644 (file)
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -2035,6 +2035,15 @@ _mesa_is_format_signed(mesa_format format)
    }
 }
 
+/**
+ * Is the given format an integer format?
+ */
+GLboolean
+_mesa_is_format_integer(mesa_format format)
+{
+   const struct gl_format_info *info = _mesa_get_format_info(format);
+   return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT);
+}
 
 /**
  * Return color encoding for given format.

diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index 89bd021..185010e 100644 (file)
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -445,6 +445,9 @@ _mesa_is_format_unsigned(mesa_format format);
 extern GLboolean
 _mesa_is_format_signed(mesa_format format);
 
+extern GLboolean
+_mesa_is_format_integer(mesa_format format);
+
 extern GLenum
 _mesa_get_format_color_encoding(mesa_format format);