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
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