Mesa (main): zink: inject LOD for sampler version of OpImageQuerySize

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Module: Mesa
Branch: main
Commit: e8f18385e05db6d14ae6807a529c5d69c38d6091
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e8f18385e05db6d14ae6807a529c5d69c38d6091

Author: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Date:   Thu Oct 28 10:57:01 2021 -0400

zink: inject LOD for sampler version of OpImageQuerySize

this is required by spec

cc: mesa-stable

Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13585>

---

 src/gallium/drivers/zink/nir_to_spirv/nir_to_spirv.c | 8 ++++++++
 1 file changed, 8 insertions(+)

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 c09e346bf66..b03dca51f4e 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
@@ -2980,6 +2980,14 @@ emit_tex(struct ntv_context *ctx, nir_tex_instr *tex)
       lod = emit_float_const(ctx, 32, 0.0);
    if (tex->op == nir_texop_txs) {
       SpvId image = spirv_builder_emit_image(&ctx->builder, image_type, load);
+      /* Additionally, if its Dim is 1D, 2D, 3D, or Cube,
+       * it must also have either an MS of 1 or a Sampled of 0 or 2.
+       * - OpImageQuerySize specification
+       *
+       * all spirv samplers use these types
+       */
+      if (tex->sampler_dim != GLSL_SAMPLER_DIM_MS && !lod)
+         lod = emit_uint_const(ctx, 32, 0);
       SpvId result = spirv_builder_emit_image_query_size(&ctx->builder,
                                                          dest_type, image,
                                                          lod);