diff options
Diffstat (limited to 'exa/exa_priv.h')
| -rw-r--r-- | exa/exa_priv.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/exa/exa_priv.h b/exa/exa_priv.h index db83d1b32..c28e269ab 100644 --- a/exa/exa_priv.h +++ b/exa/exa_priv.h @@ -119,8 +119,12 @@ typedef struct { int devKind; DevUnion devPrivate; - /* True if the in-screen copy has been modified compared to the - * system-memory copy. + /* If area is NULL, then dirty == TRUE means that the pixmap has been + * modified, so the contents are defined. Used to avoid uploads of + * undefined data. + * If area is non-NULL, then dirty == TRUE means that the in-framebuffer + * copy has been changed from the system-memory copy. Used to avoid + * downloads of unmodified data. */ Bool dirty; unsigned int size; |