[Mesa-dev] [PATCH 14/17] mesa: Add a clarifying comment about rowStride of compressed textures.

[Eric Anholt]

I always forget how we do this for compressed textures.
---
 src/mesa/main/dd.h |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 8f3cd3d..471d963 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -354,7 +354,9 @@ struct dd_function_table {
     * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT and
     *              GL_MAP_INVALIDATE_RANGE_BIT (if writing)
     * \param mapOut  returns start of mapping of region of interest
-    * \param rowStrideOut  returns row stride (in bytes)
+    * \param rowStrideOut returns row stride (in bytes).  In the case of a
+    * compressed texture, this is the byte stride between one row of blocks
+    * and another.
     */
    void (*MapTextureImage)(struct gl_context *ctx,
 			   struct gl_texture_image *texImage,
-- 
1.7.10.4