diff --git a/include/vkd3d_d3d12.idl b/include/vkd3d_d3d12.idl
index a7f2a440..70d49b3c 100644
--- a/include/vkd3d_d3d12.idl
+++ b/include/vkd3d_d3d12.idl
@@ -109,6 +109,7 @@ typedef enum D3D12_SHADER_MIN_PRECISION_SUPPORT
     D3D12_SHADER_MIN_PRECISION_SUPPORT_10_BIT = 0x1,
     D3D12_SHADER_MIN_PRECISION_SUPPORT_16_BIT = 0x2,
 } D3D12_SHADER_MIN_PRECISION_SUPPORT;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_SHADER_MIN_PRECISION_SUPPORT);")
 
 typedef enum D3D12_TILED_RESOURCES_TIER
 {
@@ -222,6 +223,7 @@ typedef enum D3D12_COMMAND_LIST_SUPPORT_FLAGS
     D3D12_COMMAND_LIST_SUPPORT_FLAG_VIDEO_PROCESS = 0x20,
     D3D12_COMMAND_LIST_SUPPORT_FLAG_VIDEO_ENCODE = 0x40,
 } D3D12_COMMAND_LIST_SUPPORT_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_COMMAND_LIST_SUPPORT_FLAGS);")
 
 typedef enum D3D12_FORMAT_SUPPORT1
 {
@@ -256,6 +258,7 @@ typedef enum D3D12_FORMAT_SUPPORT1
     D3D12_FORMAT_SUPPORT1_VIDEO_PROCESSOR_INPUT = 0x20000000,
     D3D12_FORMAT_SUPPORT1_VIDEO_ENCODER = 0x40000000,
 } D3D12_FORMAT_SUPPORT1;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_FORMAT_SUPPORT1);")
 
 typedef enum D3D12_FORMAT_SUPPORT2
 {
@@ -273,6 +276,7 @@ typedef enum D3D12_FORMAT_SUPPORT2
     D3D12_FORMAT_SUPPORT2_MULTIPLANE_OVERLAY = 0x00004000,
     D3D12_FORMAT_SUPPORT2_SAMPLER_FEEDBACK = 0x00008000,
 } D3D12_FORMAT_SUPPORT2;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_FORMAT_SUPPORT2);")
 
 typedef enum D3D12_WRITEBUFFERIMMEDIATE_MODE
 {
@@ -461,6 +465,7 @@ typedef enum D3D12_MULTISAMPLE_QUALITY_LEVEL_FLAGS
     D3D12_MULTISAMPLE_QUALITY_LEVELS_FLAG_NONE = 0x00000000,
     D3D12_MULTISAMPLE_QUALITY_LEVELS_FLAG_TILED_RESOURCE = 0x00000001,
 } D3D12_MULTISAMPLE_QUALITY_LEVEL_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_MULTISAMPLE_QUALITY_LEVEL_FLAGS);")
 
 typedef struct D3D12_FEATURE_DATA_MULTISAMPLE_QUALITY_LEVELS
 {
@@ -548,6 +553,7 @@ typedef enum D3D12_HEAP_FLAGS
     D3D12_HEAP_FLAG_ALLOW_ONLY_NON_RT_DS_TEXTURES = 0x44,
     D3D12_HEAP_FLAG_ALLOW_ONLY_RT_DS_TEXTURES = 0x84,
 } D3D12_HEAP_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_HEAP_FLAGS);")
 
 typedef struct D3D12_HEAP_DESC
 {
@@ -663,6 +669,7 @@ typedef enum D3D12_RESOURCE_BARRIER_FLAGS
     D3D12_RESOURCE_BARRIER_FLAG_BEGIN_ONLY = 0x1,
     D3D12_RESOURCE_BARRIER_FLAG_END_ONLY = 0x2,
 } D3D12_RESOURCE_BARRIER_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RESOURCE_BARRIER_FLAGS);")
 
 typedef struct D3D12_RESOURCE_TRANSITION_BARRIER
 {
@@ -782,6 +789,7 @@ typedef enum D3D12_VIEW_INSTANCING_FLAGS
     D3D12_VIEW_INSTANCING_FLAG_NONE = 0,
     D3D12_VIEW_INSTANCING_FLAG_ENABLE_VIEW_INSTANCE_MASKING = 0x1,
 } D3D12_VIEW_INSTANCING_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_VIEW_INSTANCING_FLAGS);")
 
 typedef struct D3D12_VIEW_INSTANCE_LOCATION
 {
@@ -854,6 +862,7 @@ typedef enum D3D12_DESCRIPTOR_RANGE_FLAGS
     D3D12_DESCRIPTOR_RANGE_FLAG_DATA_STATIC = 0x8,
     D3D12_DESCRIPTOR_RANGE_FLAG_DESCRIPTORS_STATIC_KEEPING_BUFFER_BOUNDS_CHECKS = 0x10000,
 } D3D12_DESCRIPTOR_RANGE_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_DESCRIPTOR_RANGE_FLAGS);")
 
 typedef struct D3D12_DESCRIPTOR_RANGE1
 {
@@ -897,6 +906,7 @@ typedef enum D3D12_ROOT_DESCRIPTOR_FLAGS
     D3D12_ROOT_DESCRIPTOR_FLAG_DATA_STATIC_WHILE_SET_AT_EXECUTE = 0x4,
     D3D12_ROOT_DESCRIPTOR_FLAG_DATA_STATIC = 0x8,
 } D3D12_ROOT_DESCRIPTOR_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_ROOT_DESCRIPTOR_FLAGS);")
 
 typedef struct D3D12_ROOT_DESCRIPTOR1
 {
@@ -1095,6 +1105,7 @@ typedef enum D3D12_ROOT_SIGNATURE_FLAGS
     D3D12_ROOT_SIGNATURE_FLAG_DENY_AMPLIFICATION_SHADER_ROOT_ACCESS = 0x100,
     D3D12_ROOT_SIGNATURE_FLAG_DENY_MESH_SHADER_ROOT_ACCESS = 0x200,
 } D3D12_ROOT_SIGNATURE_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_ROOT_SIGNATURE_FLAGS);")
 
 typedef struct D3D12_ROOT_SIGNATURE_DESC
 {
@@ -1145,6 +1156,7 @@ typedef enum D3D12_DESCRIPTOR_HEAP_FLAGS
     D3D12_DESCRIPTOR_HEAP_FLAG_NONE = 0x0,
     D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE = 0x1,
 } D3D12_DESCRIPTOR_HEAP_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_DESCRIPTOR_HEAP_FLAGS);")
 
 typedef struct D3D12_DESCRIPTOR_HEAP_DESC
 {
@@ -1183,6 +1195,7 @@ typedef enum D3D12_BUFFER_SRV_FLAGS
     D3D12_BUFFER_SRV_FLAG_NONE = 0x0,
     D3D12_BUFFER_SRV_FLAG_RAW = 0x1,
 } D3D12_BUFFER_SRV_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_BUFFER_SRV_FLAGS);")
 
 typedef enum D3D12_SHADER_COMPONENT_MAPPING
 {
@@ -1324,6 +1337,7 @@ typedef enum D3D12_BUFFER_UAV_FLAGS
     D3D12_BUFFER_UAV_FLAG_NONE = 0x0,
     D3D12_BUFFER_UAV_FLAG_RAW = 0x1,
 } D3D12_BUFFER_UAV_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_BUFFER_UAV_FLAGS);")
 
 typedef struct D3D12_BUFFER_UAV
 {
@@ -1794,6 +1808,7 @@ typedef enum D3D12_PIPELINE_STATE_FLAGS
     D3D12_PIPELINE_STATE_FLAG_NONE = 0x0,
     D3D12_PIPELINE_STATE_FLAG_DEBUG = 0x1,
 } D3D12_PIPELINE_STATE_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_PIPELINE_STATE_FLAGS);")
 
 typedef struct D3D12_GRAPHICS_PIPELINE_STATE_DESC
 {
@@ -1858,6 +1873,7 @@ typedef enum D3D12_COMMAND_QUEUE_FLAGS
     D3D12_COMMAND_QUEUE_FLAG_NONE = 0x0,
     D3D12_COMMAND_QUEUE_FLAG_DISABLE_GPU_TIMEOUT = 0x1,
 } D3D12_COMMAND_QUEUE_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_COMMAND_QUEUE_FLAGS);")
 
 typedef enum D3D12_SHADER_CACHE_SUPPORT_FLAGS
 {
@@ -1867,6 +1883,7 @@ typedef enum D3D12_SHADER_CACHE_SUPPORT_FLAGS
     D3D12_SHADER_CACHE_SUPPORT_AUTOMATIC_INPROC_CACHE = 0x4,
     D3D12_SHADER_CACHE_SUPPORT_AUTOMATIC_DISK_CACHE = 0x8,
 } D3D12_SHADER_CACHE_SUPPORT_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_SHADER_CACHE_SUPPORT_FLAGS);")
 
 typedef struct D3D12_COMMAND_QUEUE_DESC
 {
@@ -2122,6 +2139,7 @@ typedef enum D3D12_TILE_COPY_FLAGS
     D3D12_TILE_COPY_FLAG_LINEAR_BUFFER_TO_SWIZZLED_TILED_RESOURCE = 0x2,
     D3D12_TILE_COPY_FLAG_SWIZZLED_TILED_RESOURCE_TO_LINEAR_BUFFER = 0x4,
 } D3D12_TILE_COPY_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_TILE_COPY_FLAGS);")
 
 typedef struct D3D12_INDEX_BUFFER_VIEW
 {
@@ -2238,11 +2256,13 @@ typedef enum D3D12_PROTECTED_RESOURCE_SESSION_SUPPORT_FLAGS
     D3D12_PROTECTED_RESOURCE_SESSION_SUPPORT_FLAG_NONE = 0,
     D3D12_PROTECTED_RESOURCE_SESSION_SUPPORT_FLAG_SUPPORTED = 0x1,
 } D3D12_PROTECTED_RESOURCE_SESSION_SUPPORT_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_PROTECTED_RESOURCE_SESSION_SUPPORT_FLAGS);")
 
 typedef enum D3D12_PROTECTED_RESOURCE_SESSION_FLAGS
 {
     D3D12_PROTECTED_RESOURCE_SESSION_FLAG_NONE = 0,
 } D3D12_PROTECTED_RESOURCE_SESSION_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_PROTECTED_RESOURCE_SESSION_FLAGS);")
 
 typedef enum D3D12_PROTECTED_SESSION_STATUS
 {
@@ -2413,6 +2433,7 @@ typedef enum D3D12_META_COMMAND_PARAMETER_FLAGS
     D3D12_META_COMMAND_PARAMETER_FLAG_INPUT = 0x1,
     D3D12_META_COMMAND_PARAMETER_FLAG_OUTPUT = 0x2,
 } D3D12_META_COMMAND_PARAMETER_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_META_COMMAND_PARAMETER_FLAGS);")
 
 typedef enum D3D12_META_COMMAND_PARAMETER_STAGE
 {
@@ -2451,6 +2472,7 @@ typedef enum D3D12_GRAPHICS_STATES
     D3D12_GRAPHICS_STATE_SAMPLE_POSITIONS = 0x8000,
     D3D12_GRAPHICS_STATE_VIEW_INSTANCE_MASK = 0x10000,
 } D3D12_GRAPHICS_STATES;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_GRAPHICS_STATES);")
 
 typedef struct D3D12_META_COMMAND_DESC
 {
@@ -2518,6 +2540,7 @@ typedef enum D3D12_STATE_OBJECT_FLAGS
     D3D12_STATE_OBJECT_FLAG_ALLOW_EXTERNAL_DEPENDENCIES_ON_LOCAL_DEFINITIONS = 0x2,
     D3D12_STATE_OBJECT_FLAG_ALLOW_STATE_OBJECT_ADDITIONS = 0x4,
 } D3D12_STATE_OBJECT_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_STATE_OBJECT_FLAGS);")
 
 typedef struct D3D12_STATE_OBJECT_CONFIG
 {
@@ -2543,6 +2566,7 @@ typedef enum D3D12_EXPORT_FLAGS
 {
     D3D12_EXPORT_FLAG_NONE = 0,
 } D3D12_EXPORT_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_EXPORT_FLAGS);")
 
 typedef struct D3D12_EXPORT_DESC
 {
@@ -2606,6 +2630,7 @@ typedef enum D3D12_RAYTRACING_PIPELINE_FLAGS
     D3D12_RAYTRACING_PIPELINE_FLAG_SKIP_TRIANGLES = 0x100,
     D3D12_RAYTRACING_PIPELINE_FLAG_SKIP_PROCEDURAL_PRIMITIVES = 0x200,
 } D3D12_RAYTRACING_PIPELINE_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RAYTRACING_PIPELINE_FLAGS);")
 
 typedef struct D3D12_RAYTRACING_PIPELINE_CONFIG1
 {
@@ -2637,6 +2662,7 @@ typedef enum D3D12_RAYTRACING_GEOMETRY_FLAGS
     D3D12_RAYTRACING_GEOMETRY_FLAG_OPAQUE = 0x1,
     D3D12_RAYTRACING_GEOMETRY_FLAG_NO_DUPLICATE_ANYHIT_INVOCATION = 0x2,
 } D3D12_RAYTRACING_GEOMETRY_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RAYTRACING_GEOMETRY_FLAGS);")
 
 typedef enum D3D12_RAYTRACING_GEOMETRY_TYPE
 {
@@ -2652,6 +2678,7 @@ typedef enum D3D12_RAYTRACING_INSTANCE_FLAGS
     D3D12_RAYTRACING_INSTANCE_FLAG_FORCE_OPAQUE = 0x4,
     D3D12_RAYTRACING_INSTANCE_FLAG_FORCE_NON_OPAQUE = 0x8,
 } D3D12_RAYTRACING_INSTANCE_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RAYTRACING_INSTANCE_FLAGS);")
 
 typedef struct D3D12_GPU_VIRTUAL_ADDRESS_AND_STRIDE
 {
@@ -2709,6 +2736,7 @@ typedef enum D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAGS
     D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_MINIMIZE_MEMORY = 0x10,
     D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAG_PERFORM_UPDATE = 0x20,
 } D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RAYTRACING_ACCELERATION_STRUCTURE_BUILD_FLAGS);")
 
 typedef enum D3D12_RAYTRACING_ACCELERATION_STRUCTURE_COPY_MODE
 {
@@ -2864,6 +2892,7 @@ typedef enum D3D12_RAY_FLAGS
     D3D12_RAY_FLAG_SKIP_TRIANGLES = 0x100,
     D3D12_RAY_FLAG_SKIP_PROCEDURAL_PRIMITIVES = 0x200,
 } D3D12_RAY_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RAY_FLAGS);")
 
 typedef enum D3D12_HIT_KIND
 {
@@ -2886,16 +2915,19 @@ typedef enum D3D12_COMMAND_LIST_FLAGS
 {
     D3D12_COMMAND_LIST_FLAG_NONE = 0,
 } D3D12_COMMAND_LIST_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_COMMAND_LIST_FLAGS);")
 
 typedef enum D3D12_COMMAND_POOL_FLAGS
 {
     D3D12_COMMAND_POOL_FLAG_NONE = 0,
 } D3D12_COMMAND_POOL_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_COMMAND_POOL_FLAGS);")
 
 typedef enum D3D12_COMMAND_RECORDER_FLAGS
 {
     D3D12_COMMAND_RECORDER_FLAG_NONE = 0,
 } D3D12_COMMAND_RECORDER_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_COMMAND_RECORDER_FLAGS);")
 
 typedef enum D3D12_AUTO_BREADCRUMB_OP
 {
@@ -2993,6 +3025,7 @@ typedef enum D3D12_DRED_FLAGS
     D3D12_DRED_FLAG_FORCE_ENABLE = 0x1,
     D3D12_DRED_FLAG_AUTOBREADCRUMBS = 0x2,
 } D3D12_DRED_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_DRED_FLAGS);")
 
 typedef enum D3D12_DRED_ENABLEMENT
 {
@@ -3125,6 +3158,7 @@ typedef enum D3D12_RENDER_PASS_FLAGS
     D3D12_RENDER_PASS_FLAG_SUSPENDING_PASS = 0x2,
     D3D12_RENDER_PASS_FLAG_RESUMING_PASS = 0x4,
 } D3D12_RENDER_PASS_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RENDER_PASS_FLAGS);")
 
 typedef enum D3D12_AXIS_SHADING_RATE
 {
@@ -3497,6 +3531,7 @@ typedef enum D3D12_TILE_MAPPING_FLAGS
     D3D12_TILE_MAPPING_FLAG_NONE = 0x0,
     D3D12_TILE_MAPPING_FLAG_NO_HAZARD = 0x1,
 } D3D12_TILE_MAPPING_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_TILE_MAPPING_FLAGS);")
 
 [
     uuid(0ec870a6-5d7e-4c22-8cfc-5baae07616ed),
@@ -3546,6 +3581,7 @@ typedef enum D3D12_FENCE_FLAGS
     D3D12_FENCE_FLAG_SHARED_CROSS_ADAPTER = 0x2,
     D3D12_FENCE_FLAG_NON_MONITORED = 0x4,
 } D3D12_FENCE_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_FENCE_FLAGS);")
 
 typedef enum D3D12_QUERY_HEAP_TYPE
 {
@@ -3562,6 +3598,7 @@ typedef enum D3D12_RESIDENCY_FLAGS
     D3D12_RESIDENCY_FLAG_NONE = 0,
     D3D12_RESIDENCY_FLAG_DENY_OVERBUDGET = 0,
 } D3D12_RESIDENCY_FLAGS;
+cpp_quote("DEFINE_ENUM_FLAG_OPERATORS(D3D12_RESIDENCY_FLAGS);")
 
 typedef struct D3D12_QUERY_HEAP_DESC
 {