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llvmpipe: handle compute shader launch with 0 threads

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If you set LP_NUM_THREADS=0 compute shaders would hang,
just execute the workloads in sequence if we have no threads
in the pool.

Fixes: 1b24e3ba75 ("llvmpipe: add compute threadpool + mutex")
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Dave Airlie 2019-10-16 13:33:36 +10:00 • committed by Dave Airlie
parent 0141a4cdc0
commit bde08ce4d7
1 changed files with 9 additions and 0 deletions
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9
src/gallium/drivers/llvmpipe/lp_cs_tpool.c
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@ -114,6 +114,15 @@ lp_cs_tpool_queue_task(struct lp_cs_tpool *pool,
{ {
struct lp_cs_tpool_task *task; struct lp_cs_tpool_task *task;
if (pool->num_threads == 0) {
struct lp_cs_local_mem lmem;
memset(&lmem, 0, sizeof(lmem));
for (unsigned t = 0; t < num_iters; t++) {
work(data, t, &lmem);
}
return NULL;
}
task = CALLOC_STRUCT(lp_cs_tpool_task); task = CALLOC_STRUCT(lp_cs_tpool_task);
if (!task) { if (!task) {
return NULL; return NULL;