[PATCH v2 05/10] etnaviv: also update textures from external resources

[Lucas Stach]

This reworks the logic in etna_update_sampler_source to select the
newest resource view for updating the texture view. This should make
the logic easier to follow and fixes texture updates from imported
dma-bufs.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
Reviewed-by: Wladimir J. van der Laan <laanwj at gmail.com>
---
 src/gallium/drivers/etnaviv/etnaviv_texture.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/src/gallium/drivers/etnaviv/etnaviv_texture.c b/src/gallium/drivers/etnaviv/etnaviv_texture.c
index 05fc7da58f86..954daea7ba57 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_texture.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_texture.c
@@ -113,16 +113,24 @@ etna_delete_sampler_state(struct pipe_context *pctx, void *ss)
 static void
 etna_update_sampler_source(struct pipe_sampler_view *view)
 {
-   struct etna_resource *res = etna_resource(view->texture);
+   struct etna_resource *base = etna_resource(view->texture);
+   struct etna_resource *to = base, *from = base;
 
-   if (res->texture && etna_resource_older(etna_resource(res->texture), res)) {
-      /* Texture is older than render buffer, copy the texture using RS */
-      etna_copy_resource(view->context, res->texture, view->texture, 0,
+   if (base->external && etna_resource_newer(etna_resource(base->external), base))
+      from = etna_resource(base->external);
+
+   if (base->texture)
+      to = etna_resource(base->texture);
+
+   if ((to != from) && etna_resource_older(to, from)) {
+      etna_copy_resource(view->context, &to->base, &from->base, 0,
+                         view->texture->last_level);
+      to->seqno = from->seqno;
+   } else if ((to == from) && etna_resource_needs_flush(to)) {
+      /* Resolve TS if needed, remove when adding sampler TS */
+      etna_copy_resource(view->context, &to->base, &from->base, 0,
                          view->texture->last_level);
-      etna_resource(res->texture)->seqno = res->seqno;
-   } else if (etna_resource_needs_flush(res)) {
-      etna_copy_resource(view->context, view->texture, view->texture, 0, 0);
-      res->flush_seqno = res->seqno;
+      to->flush_seqno = from->seqno;
    }
 }
 
-- 
2.11.0