spirv: Define StorageImageWriteWithoutFormat capability when used

src/shader_recompiler/backend/spirv/emit_spirv.cpp

@@ -244,6 +244,9 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
     if (info.uses_typeless_image_reads && profile.support_typeless_image_loads) {
         ctx.AddCapability(spv::Capability::StorageImageReadWithoutFormat);
     }
+    if (info.uses_typeless_image_writes) {
+        ctx.AddCapability(spv::Capability::StorageImageWriteWithoutFormat);
+    }
     // TODO: Track this usage
     ctx.AddCapability(spv::Capability::ImageGatherExtended);
     ctx.AddCapability(spv::Capability::ImageQuery);

src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp

@@ -436,6 +436,11 @@ void VisitUsages(Info& info, IR::Inst& inst) {
             inst.GetAssociatedPseudoOperation(IR::Opcode::GetSparseFromOp) != nullptr;
         break;
     }
+    case IR::Opcode::ImageWrite: {
+        const auto flags{inst.Flags<IR::TextureInstInfo>()};
+        info.uses_typeless_image_writes |= flags.image_format == ImageFormat::Typeless;
+        break;
+    }
     case IR::Opcode::SubgroupEqMask:
     case IR::Opcode::SubgroupLtMask:
     case IR::Opcode::SubgroupLeMask:

src/shader_recompiler/shader_info.h

@@ -129,6 +129,7 @@ struct Info {
     bool uses_subgroup_mask{};
     bool uses_fswzadd{};
     bool uses_typeless_image_reads{};
+    bool uses_typeless_image_writes{};
     bool uses_shared_increment{};
     bool uses_shared_decrement{};
     bool uses_global_increment{};