1{ 2 "register_extension": 3 { 4 "type": "device", 5 "core": "" 6 }, 7 "mandatory_features": 8 { 9 "VkPhysicalDeviceShaderClockFeaturesKHR": 10 [ 11 { "features": ["shaderSubgroupClock"], "requirements": ["VK_KHR_shader_clock"] } 12 ] 13 } 14}