diff options
Diffstat (limited to 'src/fb.h')
| -rw-r--r-- | src/fb.h | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -19,6 +19,7 @@ typedef struct fb_fragment_t { unsigned stride; /* number of bytes from the end of one row to the start of the next */ unsigned pitch; /* number of bytes separating y from y + 1, including any padding */ unsigned number; /* this fragment's number as produced by fragmenting */ + unsigned zeroed:1; /* if this fragment has been zeroed since last flip */ } fb_fragment_t; /* This is a page handle object for page flip submission/life-cycle. @@ -92,9 +93,14 @@ static inline void fb_fragment_zero(fb_fragment_t *fragment) { void *buf = fragment->buf; + if (fragment->zeroed) + return; + /* TODO: there should be a fast-path for non-divided fragments where there's no stride to skip */ for (int y = 0; y < fragment->height; y++, buf += fragment->pitch) memset(buf, 0, fragment->pitch - fragment->stride); + + fragment->zeroed = 1; } #endif |