Mesa (main): zink: fix gl_SampleMaskIn spirv generation

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Module: Mesa
Branch: main
Commit: 8899f6a19857d533d62945889c413b55cea5223c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=8899f6a19857d533d62945889c413b55cea5223c

Author: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Date:   Fri Oct 22 13:47:16 2021 -0400

zink: fix gl_SampleMaskIn spirv generation

the uint[1] -> uint dance is only relevant on the first load, so move
the variable type shuffling inside the create block to avoid breaking successive
loads

fixes #5543

cc: mesa-stable

Reviewed-by: Dave Airlie <airlied at redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13488>

---

 src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c b/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
index 22d4525cfba..6a8c8eca156 100644
--- a/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
+++ b/src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c
@@ -2368,12 +2368,12 @@ static void
 emit_load_uint_input(struct ntv_context *ctx, nir_intrinsic_instr *intr, SpvId *var_id, const char *var_name, SpvBuiltIn builtin)
 {
    SpvId var_type = spirv_builder_type_uint(&ctx->builder, 32);
-   if (builtin == SpvBuiltInSampleMask) {
-      /* gl_SampleMaskIn is an array[1] in spirv... */
-      var_type = spirv_builder_type_array(&ctx->builder, var_type, emit_uint_const(ctx, 32, 1));
-      spirv_builder_emit_array_stride(&ctx->builder, var_type, sizeof(uint32_t));
-   }
    if (!*var_id) {
+      if (builtin == SpvBuiltInSampleMask) {
+         /* gl_SampleMaskIn is an array[1] in spirv... */
+         var_type = spirv_builder_type_array(&ctx->builder, var_type, emit_uint_const(ctx, 32, 1));
+         spirv_builder_emit_array_stride(&ctx->builder, var_type, sizeof(uint32_t));
+      }
       *var_id = create_builtin_var(ctx, var_type,
                                    SpvStorageClassInput,
                                    var_name,