diff options
| -rw-r--r-- | src/gallium/drivers/etnaviv/etnaviv_transfer.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/gallium/drivers/etnaviv/etnaviv_transfer.c b/src/gallium/drivers/etnaviv/etnaviv_transfer.c index ee5cda5e8ec..08ec1987d8f 100644 --- a/src/gallium/drivers/etnaviv/etnaviv_transfer.c +++ b/src/gallium/drivers/etnaviv/etnaviv_transfer.c @@ -243,11 +243,16 @@ etna_transfer_map(struct pipe_context *pctx, struct pipe_resource *prsc, struct etna_resource_level *res_level = &rsc->levels[level]; - /* Always sync if we have the temporary resource. The PIPE_TRANSFER_READ - * case could be optimised if we knew whether the resource has outstanding - * rendering. */ - if ((usage & PIPE_TRANSFER_READ || trans->rsc) && - rsc->status & ETNA_PENDING_WRITE) + /* + * Always flush if we have the temporary resource and have a copy to this + * outstanding. Otherwise infer flush requirement from resource access and + * current GPU usage (reads must wait for GPU writes, writes must have + * exclusive access to the buffer). + */ + if ((trans->rsc && (etna_resource(trans->rsc)->status & ETNA_PENDING_WRITE)) || + (!trans->rsc && + (((usage & PIPE_TRANSFER_READ) && (rsc->status & ETNA_PENDING_WRITE)) || + ((usage & PIPE_TRANSFER_WRITE) && rsc->status)))) pctx->flush(pctx, NULL, 0); /* XXX we don't handle PIPE_TRANSFER_FLUSH_EXPLICIT; this flag can be ignored |