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tu,ir3: lower multiview indirect stores to register indirects

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nir_lower_multiview creates a loop that loops over the view mask and
uses indirect stores. Since we only support direct
store_per_view_output, we have to make sure these indirects are gone.
Lowering the IO vars to temporaries will replace them with indirects on
registers.

Signed-off-by: Job Noorman <jnoorman@igalia.com>
Fixes: 6a1c8d3a0c ("ir3, freedreno, turnip: Lower io earlier")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/14787
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39694>
This commit is contained in:
Job Noorman 2026-02-06 08:23:11 +01:00 • committed by Marge Bot
parent cf0786c766
commit ea2507dd8b
1 changed files with 11 additions and 0 deletions
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11
src/freedreno/vulkan/tu_nir_lower_multiview.cc
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@ -9,6 +9,8 @@
#include "tu_device.h"
#include "ir3/ir3_nir.h"
/* Some a6xx variants cannot support a non-contiguous multiview mask. Instead,
* inside the shader something like this needs to be inserted:
*
@ -105,6 +107,15 @@ tu_nir_lower_multiview(nir_shader *nir, uint32_t mask, struct tu_device *dev)
NIR_PASS(progress, nir, lower_multiview_mask, &options.view_mask);
NIR_PASS(_, nir, nir_lower_multiview, options);
/* nir_lower_multiview creates a loop that loops over the view mask and
* uses indirect stores. Since we only support direct
* store_per_view_output, we have to make sure these indirects are gone.
* Lowering the IO vars to temporaries will replace them with indirects
* on registers.
*/
ir3_nir_lower_io_vars_to_temporaries(nir);
progress = true;
}