[Mesa-dev] [PATCH 2/9] etnaviv: reject imports of tiler incompatible linear buffers

[Lucas Stach]

We don't have a fallback to get them into a render/sampler compatible
layout (yet). Rejecting the import at least forwards this issue to the
client application, which might have a way to deal with this.

Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
---
 src/gallium/drivers/etnaviv/etnaviv_resource.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/gallium/drivers/etnaviv/etnaviv_resource.c b/src/gallium/drivers/etnaviv/etnaviv_resource.c
index c17a1704537e..41688dd340c2 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_resource.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_resource.c
@@ -524,6 +524,14 @@ etna_resource_from_handle(struct pipe_screen *pscreen,
    level->width = tmpl->width0;
    level->height = tmpl->height0;
 
+   /* Reject imports of linear buffers if they have a blocksize incompatible
+    * with the hardware tiler, as we don't have a fallback path to get them into
+    * a render/sampler compatible layout.
+    */
+   if (rsc->layout == ETNA_LAYOUT_LINEAR && !screen->specs.use_blt &&
+       util_format_get_blocksize(prsc->format) == 1)
+      goto fail;
+
    /* Determine padding of the imported resource. */
    unsigned paddingX = 0, paddingY = 0;
    etna_layout_multiple(rsc->layout, screen->specs.pixel_pipes,
-- 
2.18.0