This avoids costly thread synchronisation. With this fix games that previously
regressed with mesa_glthread=true like xonotic or grid autosport.
Could someone test if games that benefit from glthread didn't regress?
---
src/mesa/main/glthread.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/src/mesa/main/glthread.c b/src/mesa/main/glthread.c
index 06115b916d..d46288c242 100644
--- a/src/mesa/main/glthread.c
+++ b/src/mesa/main/glthread.c
@@ -252,12 +252,21 @@ _mesa_glthread_finish(struct gl_context *ctx)
if (pthread_self() == glthread->thread)
return;
- _mesa_glthread_flush_batch(ctx);
-
pthread_mutex_lock(&glthread->mutex);
- while (glthread->batch_queue || glthread->busy)
- pthread_cond_wait(&glthread->work_done, &glthread->mutex);
+ if (!(glthread->batch_queue || glthread->busy))
+ {
+ if (glthread->batch && glthread->batch->used)
+ {
+ glthread_unmarshal_batch(ctx, glthread->batch);
+ }
+ glthread_allocate_batch(ctx);
+ }
+ else
+ {
+ while (glthread->batch_queue || glthread->busy)
+ pthread_cond_wait(&glthread->work_done, &glthread->mutex);
+ }
pthread_mutex_unlock(&glthread->mutex);
}
--
2.12.2
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