- /* Wait for an available job.
- */
- pipe_mutex_lock( que->que_mutex );
- while (que->last == que->first)
- pipe_condvar_wait( que->que_notempty_condvar, que->que_mutex );
-
- /* See if the que is full.
- */
- full = (que->last + 1) % NUM_QUAD_JOBS == que->first;
-
- /* Take a job and remove it from que.
- */
- job = que->jobs[que->first];
- que->first = (que->first + 1) % NUM_QUAD_JOBS;
-
- /* Notify the producer if the que is not full.
- */
- if (full)
- pipe_condvar_signal( que->que_notfull_condvar );
- pipe_mutex_unlock( que->que_mutex );
-
- job.routine( info->setup, info->id, &job );
-
- /* Notify the producer if that's the last finished job.
- */
- pipe_mutex_lock( que->que_mutex );
- que->jobs_done++;
- if (que->jobs_added == que->jobs_done)
- pipe_condvar_signal( que->que_done_condvar );
- pipe_mutex_unlock( que->que_mutex );
- }
-
- return NULL;
-}
-
-#define WAIT_FOR_COMPLETION(setup) \
- do {\
- pipe_mutex_lock( setup->que.que_mutex );\
- if (!INSTANT_NOTEMPTY_NOTIFY)\
- pipe_condvar_broadcast( setup->que.que_notempty_condvar );\
- while (setup->que.jobs_added != setup->que.jobs_done)\
- pipe_condvar_wait( setup->que.que_done_condvar, setup->que.que_mutex );\
- pipe_mutex_unlock( setup->que.que_mutex );\
- } while (0)
-
-#else
-
-#define WAIT_FOR_COMPLETION(setup) ((void) 0)
-
-#endif
-
-
-
-/**
- * Do triangle cull test using tri determinant (sign indicates orientation)
- * \return true if triangle is to be culled.
- */
-static INLINE boolean
-cull_tri(const struct setup_context *setup, float det)
-{
- if (det != 0) {
- /* if (det < 0 then Z points toward camera and triangle is
- * counter-clockwise winding.
- */
- unsigned winding = (det < 0) ? PIPE_WINDING_CCW : PIPE_WINDING_CW;
-
- if ((winding & setup->winding) == 0)
- return FALSE;
- }
-
- /* Culled:
- */
- return TRUE;
-}