diff options
Diffstat (limited to 'src/mesa/state_tracker/st_cb_clear.c')
| -rw-r--r-- | src/mesa/state_tracker/st_cb_clear.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c index f015b12368..e83b6c92ef 100644 --- a/src/mesa/state_tracker/st_cb_clear.c +++ b/src/mesa/state_tracker/st_cb_clear.c @@ -117,7 +117,18 @@ draw_quad(GLcontext *ctx, { struct st_context *st = ctx->st; struct pipe_context *pipe = st->pipe; - const GLuint max_slots = 1024 / sizeof(st->clear.vertices); + + /* XXX: Need to improve buffer_write to allow NO_WAIT (as well as + * no_flush) updates to buffers where we know there is no conflict + * with previous data. Currently using max_slots > 1 will cause + * synchronous rendering if the driver flushes its command buffers + * between one bitmap and the next. Our flush hook below isn't + * sufficient to catch this as the driver doesn't tell us when it + * flushes its own command buffers. Until this gets fixed, pay the + * price of allocating a new buffer for each bitmap cache-flush to + * avoid synchronous rendering. + */ + const GLuint max_slots = 1; /* 1024 / sizeof(st->clear.vertices); */ GLuint i; if (st->clear.vbuf_slot >= max_slots) { |