diff options
Diffstat (limited to 'src/mesa/state_tracker/st_cb_bitmap.c')
| -rw-r--r-- | src/mesa/state_tracker/st_cb_bitmap.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mesa/state_tracker/st_cb_bitmap.c b/src/mesa/state_tracker/st_cb_bitmap.c index 902fb38d1a..a22fa68299 100644 --- a/src/mesa/state_tracker/st_cb_bitmap.c +++ b/src/mesa/state_tracker/st_cb_bitmap.c @@ -330,7 +330,18 @@ setup_bitmap_vertex_data(struct st_context *st, const GLfloat clip_y0 = (GLfloat)(y0 / fb_height * 2.0 - 1.0); const GLfloat clip_x1 = (GLfloat)(x1 / fb_width * 2.0 - 1.0); const GLfloat clip_y1 = (GLfloat)(y1 / fb_height * 2.0 - 1.0); - const GLuint max_slots = 4096 / sizeof(st->bitmap.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; /* 4096 / sizeof(st->bitmap.vertices); */ GLuint i; if (st->bitmap.vbuf_slot >= max_slots) { |