[vk, spir-v] Adding decoration for NonWritable buffers if vertexPipelineStoresAndAtomics isn't available

src/shader_recompiler/backend/spirv/spirv_emit_context.cpp

@@ -315,6 +315,9 @@ void DefineSsbos(EmitContext& ctx, StorageTypeDefinition& type_def,
         ctx.Decorate(id, spv::Decoration::Binding, binding);
         ctx.Decorate(id, spv::Decoration::DescriptorSet, 0U);
         ctx.Name(id, fmt::format("ssbo{}", index));
+        if (!desc.is_written) {
+            ctx.Decorate(id, spv::Decoration::NonWritable);
+        }
         if (ctx.profile.supported_spirv >= 0x00010400) {
             ctx.interfaces.push_back(id);
         }