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iris: Fix imageBuffer and PBO download.

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Recently we added checks to try and deny multisampled shader images.
Unfortunately, this messed up imageBuffers, which have sample_count = 0,
which are also used in PBO download, causing us hit CPU map fallbacks.

Fixes: b15f5cfd20 iris: Do not advertise multisampled image load/store.
Reviewed-by: Rafael Antognolli <rafael.antognolli@intel.com>
This commit is contained in:
Kenneth Graunke 2019-05-01 11:16:13 -07:00
parent e2fecf57e3
commit ebbb05b3c9
1 changed files with 2 additions and 2 deletions
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4
src/gallium/drivers/iris/iris_formats.c
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@ -455,9 +455,9 @@ iris_is_format_supported(struct pipe_screen *pscreen,
if (usage & PIPE_BIND_SHADER_IMAGE) {
/* Dataport doesn't support compression, and we can't resolve an MCS
* compressed surface.
* compressed surface. (Buffer images may have sample count of 0.)
*/
supported &= sample_count == 1;
supported &= sample_count <= 1;
// XXX: allow untyped reads
supported &= isl_format_supports_typed_reads(devinfo, format) &&