spirv,nir: add new lod parameter to image_{load,store} intrinsics

SPV_AMD_shader_image_load_store_lod allows to use a lod parameter
with OpImageRead, OpImageWrite and OpImageSparseRead.

According to the specification, this parameter should be a 32-bit
integer. It is initialized to 0 when no lod parameter is found
during SPIR-V->NIR translation.

Signed-off-by: Samuel Pitoiset <[email protected]>
Reviewed-by: Bas Nieuwenhuizen <[email protected]>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
index 494c0c2723a..479832b5ab0 100644
--- a/src/compiler/glsl/glsl_to_nir.cpp
+++ b/src/compiler/glsl/glsl_to_nir.cpp
@@ -1373,13 +1373,18 @@ nir_visitor::visit(ir_call *ir)
             instr->src[3] =
                nir_src_for_ssa(evaluate_rvalue((ir_dereference *)param));
             param = param->get_next();
+         } else if (op == nir_intrinsic_image_deref_load) {
+            instr->src[3] = nir_src_for_ssa(nir_imm_int(&b, 0)); /* LOD */
          }
 
          if (!param->is_tail_sentinel()) {
             instr->src[4] =
                nir_src_for_ssa(evaluate_rvalue((ir_dereference *)param));
             param = param->get_next();
+         } else if (op == nir_intrinsic_image_deref_store) {
+            instr->src[4] = nir_src_for_ssa(nir_imm_int(&b, 0)); /* LOD */
          }
+
          nir_builder_instr_insert(&b, &instr->instr);
          break;
       }