Provide std::hash<vk::HandleType> to make handles hashable.

VulkanHppGenerator.cpp

@@ -2679,6 +2679,36 @@ void VulkanHppGenerator::appendHandlesCommandDefintions(std::string & str) const
   str += "\n";
 }
 
+void VulkanHppGenerator::appendHashStructures(std::string& str) const
+{
+  str += "\n"
+    "namespace std\n"
+    "{\n";
+
+  const std::string hashTemplate = R"(  template <> struct hash<vk::${type}>
+  {
+    std::size_t operator()(vk::${type} const& ${name}) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<Vk${type}>{}(static_cast<Vk${type}>(${name}));
+    }
+  };
+)";
+  for (auto handle : m_handles)
+  {
+    if (!handle.first.empty())
+    {
+      str += "\n";
+      appendPlatformEnter(str, !handle.second.alias.empty(), handle.second.platform);
+      std::string type = stripPrefix(handle.first, "Vk");
+      std::string name = startLowerCase(type);
+      str += replaceWithMap(hashTemplate, { {"name", name}, {"type", type} });
+      appendPlatformLeave(str, !handle.second.alias.empty(), handle.second.platform);
+    }
+  }
+
+  str += "}\n";
+}
+
 // Intended only for `enum class Result`!
 void VulkanHppGenerator::appendResultExceptions(std::string & str) const
 {
@@ -6443,6 +6473,7 @@ int main(int argc, char **argv)
 #include <cstddef>
 #include <cstdint>
 #include <cstring>
+#include <functional>
 #include <initializer_list>
 #include <string>
 #include <system_error>
@@ -6756,8 +6787,9 @@ namespace std
     generator.appendHandlesCommandDefintions(str);
     generator.appendStructureChainValidation(str);
     generator.appendDispatchLoaderDynamic(str);
-    str += "} // namespace VULKAN_HPP_NAMESPACE\n"
+    str += "} // namespace VULKAN_HPP_NAMESPACE\n";
-      "#endif\n";
+    generator.appendHashStructures(str);
+    str += "#endif\n";
 
     assert(str.length() < estimatedLength);
     cleanup(str);

VulkanHppGenerator.hpp

@@ -34,6 +34,7 @@ class VulkanHppGenerator
     void appendForwardDeclarations(std::string & str) const;
     void appendHandles(std::string & str) const;
     void appendHandlesCommandDefintions(std::string & str) const;
+    void appendHashStructures(std::string& str) const;
     void appendResultExceptions(std::string & str) const;
     void appendStructs(std::string & str) const;
     void appendStructureChainValidation(std::string & str);

tests/Hash/CMakeLists.txt

@@ -0,0 +1,37 @@
+# Copyright(c) 2018, NVIDIA CORPORATION. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cmake_minimum_required(VERSION 3.2)
+
+if (NOT TESTS_BUILD_ONLY_DYNAMIC)
+	project(Hash)
+
+	set(HEADERS
+	)
+
+	set(SOURCES
+	  Hash.cpp
+	)
+
+	source_group(headers FILES ${HEADERS})
+	source_group(sources FILES ${SOURCES})
+
+	add_executable(Hash
+	  ${HEADERS}
+	  ${SOURCES}
+	)
+
+	set_target_properties(Hash PROPERTIES FOLDER "Tests")
+	target_link_libraries(Hash "${Vulkan_LIBRARIES}")
+endif()

tests/Hash/Hash.cpp

@@ -0,0 +1,55 @@
+// Copyright(c) 2018, NVIDIA CORPORATION. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// VulkanHpp Samples : Hash
+//                     Compile test on using std::hash on handles
+
+#include "vulkan/vulkan.hpp"
+#include <iostream>
+#include <unordered_map>
+#include <unordered_set>
+
+static char const* AppName = "Hash";
+static char const* EngineName = "Vulkan.hpp";
+
+int main(int /*argc*/, char ** /*argv*/)
+{
+  try
+  {
+    vk::ApplicationInfo appInfo(AppName, 1, EngineName, 1, VK_API_VERSION_1_1);
+    vk::UniqueInstance instance = vk::createInstanceUnique(vk::InstanceCreateInfo({}, &appInfo));
+
+    auto h1 = std::hash<vk::Instance>{}(*instance);
+    auto h2 = std::hash<VkInstance>{}(*instance);
+    assert(h1 == h2);
+
+    std::unordered_set<vk::Instance> uset;
+    uset.insert(*instance);
+
+    std::unordered_map<vk::Instance, size_t> umap;
+    umap[*instance] = 1;
+  }
+  catch (vk::SystemError const& err)
+  {
+    std::cout << "vk::SystemError: " << err.what() << std::endl;
+    exit(-1);
+  }
+  catch (...)
+  {
+    std::cout << "unknown error\n";
+    exit(-1);
+  }
+
+  return 0;
+}

vulkan/vulkan.hpp

@@ -39,6 +39,7 @@
 #include <cstddef>
 #include <cstdint>
 #include <cstring>
+#include <functional>
 #include <initializer_list>
 #include <string>
 #include <system_error>
@@ -77981,4 +77982,313 @@ namespace VULKAN_HPP_NAMESPACE
   };
 
 } // namespace VULKAN_HPP_NAMESPACE
+
+namespace std
+{
+  template <> struct hash<vk::AccelerationStructureKHR>
+  {
+    std::size_t operator()(vk::AccelerationStructureKHR const& accelerationStructureKHR) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkAccelerationStructureKHR>{}(static_cast<VkAccelerationStructureKHR>(accelerationStructureKHR));
+    }
+  };
+
+  template <> struct hash<vk::Buffer>
+  {
+    std::size_t operator()(vk::Buffer const& buffer) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkBuffer>{}(static_cast<VkBuffer>(buffer));
+    }
+  };
+
+  template <> struct hash<vk::BufferView>
+  {
+    std::size_t operator()(vk::BufferView const& bufferView) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkBufferView>{}(static_cast<VkBufferView>(bufferView));
+    }
+  };
+
+  template <> struct hash<vk::CommandBuffer>
+  {
+    std::size_t operator()(vk::CommandBuffer const& commandBuffer) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkCommandBuffer>{}(static_cast<VkCommandBuffer>(commandBuffer));
+    }
+  };
+
+  template <> struct hash<vk::CommandPool>
+  {
+    std::size_t operator()(vk::CommandPool const& commandPool) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkCommandPool>{}(static_cast<VkCommandPool>(commandPool));
+    }
+  };
+
+  template <> struct hash<vk::DebugReportCallbackEXT>
+  {
+    std::size_t operator()(vk::DebugReportCallbackEXT const& debugReportCallbackEXT) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDebugReportCallbackEXT>{}(static_cast<VkDebugReportCallbackEXT>(debugReportCallbackEXT));
+    }
+  };
+
+  template <> struct hash<vk::DebugUtilsMessengerEXT>
+  {
+    std::size_t operator()(vk::DebugUtilsMessengerEXT const& debugUtilsMessengerEXT) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDebugUtilsMessengerEXT>{}(static_cast<VkDebugUtilsMessengerEXT>(debugUtilsMessengerEXT));
+    }
+  };
+
+#ifdef VK_ENABLE_BETA_EXTENSIONS
+  template <> struct hash<vk::DeferredOperationKHR>
+  {
+    std::size_t operator()(vk::DeferredOperationKHR const& deferredOperationKHR) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDeferredOperationKHR>{}(static_cast<VkDeferredOperationKHR>(deferredOperationKHR));
+    }
+  };
+#endif /*VK_ENABLE_BETA_EXTENSIONS*/
+
+  template <> struct hash<vk::DescriptorPool>
+  {
+    std::size_t operator()(vk::DescriptorPool const& descriptorPool) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDescriptorPool>{}(static_cast<VkDescriptorPool>(descriptorPool));
+    }
+  };
+
+  template <> struct hash<vk::DescriptorSet>
+  {
+    std::size_t operator()(vk::DescriptorSet const& descriptorSet) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDescriptorSet>{}(static_cast<VkDescriptorSet>(descriptorSet));
+    }
+  };
+
+  template <> struct hash<vk::DescriptorSetLayout>
+  {
+    std::size_t operator()(vk::DescriptorSetLayout const& descriptorSetLayout) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDescriptorSetLayout>{}(static_cast<VkDescriptorSetLayout>(descriptorSetLayout));
+    }
+  };
+
+  template <> struct hash<vk::DescriptorUpdateTemplate>
+  {
+    std::size_t operator()(vk::DescriptorUpdateTemplate const& descriptorUpdateTemplate) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDescriptorUpdateTemplate>{}(static_cast<VkDescriptorUpdateTemplate>(descriptorUpdateTemplate));
+    }
+  };
+
+  template <> struct hash<vk::Device>
+  {
+    std::size_t operator()(vk::Device const& device) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDevice>{}(static_cast<VkDevice>(device));
+    }
+  };
+
+  template <> struct hash<vk::DeviceMemory>
+  {
+    std::size_t operator()(vk::DeviceMemory const& deviceMemory) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDeviceMemory>{}(static_cast<VkDeviceMemory>(deviceMemory));
+    }
+  };
+
+  template <> struct hash<vk::DisplayKHR>
+  {
+    std::size_t operator()(vk::DisplayKHR const& displayKHR) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDisplayKHR>{}(static_cast<VkDisplayKHR>(displayKHR));
+    }
+  };
+
+  template <> struct hash<vk::DisplayModeKHR>
+  {
+    std::size_t operator()(vk::DisplayModeKHR const& displayModeKHR) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkDisplayModeKHR>{}(static_cast<VkDisplayModeKHR>(displayModeKHR));
+    }
+  };
+
+  template <> struct hash<vk::Event>
+  {
+    std::size_t operator()(vk::Event const& event) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkEvent>{}(static_cast<VkEvent>(event));
+    }
+  };
+
+  template <> struct hash<vk::Fence>
+  {
+    std::size_t operator()(vk::Fence const& fence) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkFence>{}(static_cast<VkFence>(fence));
+    }
+  };
+
+  template <> struct hash<vk::Framebuffer>
+  {
+    std::size_t operator()(vk::Framebuffer const& framebuffer) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkFramebuffer>{}(static_cast<VkFramebuffer>(framebuffer));
+    }
+  };
+
+  template <> struct hash<vk::Image>
+  {
+    std::size_t operator()(vk::Image const& image) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkImage>{}(static_cast<VkImage>(image));
+    }
+  };
+
+  template <> struct hash<vk::ImageView>
+  {
+    std::size_t operator()(vk::ImageView const& imageView) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkImageView>{}(static_cast<VkImageView>(imageView));
+    }
+  };
+
+  template <> struct hash<vk::IndirectCommandsLayoutNV>
+  {
+    std::size_t operator()(vk::IndirectCommandsLayoutNV const& indirectCommandsLayoutNV) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkIndirectCommandsLayoutNV>{}(static_cast<VkIndirectCommandsLayoutNV>(indirectCommandsLayoutNV));
+    }
+  };
+
+  template <> struct hash<vk::Instance>
+  {
+    std::size_t operator()(vk::Instance const& instance) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkInstance>{}(static_cast<VkInstance>(instance));
+    }
+  };
+
+  template <> struct hash<vk::PerformanceConfigurationINTEL>
+  {
+    std::size_t operator()(vk::PerformanceConfigurationINTEL const& performanceConfigurationINTEL) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkPerformanceConfigurationINTEL>{}(static_cast<VkPerformanceConfigurationINTEL>(performanceConfigurationINTEL));
+    }
+  };
+
+  template <> struct hash<vk::PhysicalDevice>
+  {
+    std::size_t operator()(vk::PhysicalDevice const& physicalDevice) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkPhysicalDevice>{}(static_cast<VkPhysicalDevice>(physicalDevice));
+    }
+  };
+
+  template <> struct hash<vk::Pipeline>
+  {
+    std::size_t operator()(vk::Pipeline const& pipeline) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkPipeline>{}(static_cast<VkPipeline>(pipeline));
+    }
+  };
+
+  template <> struct hash<vk::PipelineCache>
+  {
+    std::size_t operator()(vk::PipelineCache const& pipelineCache) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkPipelineCache>{}(static_cast<VkPipelineCache>(pipelineCache));
+    }
+  };
+
+  template <> struct hash<vk::PipelineLayout>
+  {
+    std::size_t operator()(vk::PipelineLayout const& pipelineLayout) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkPipelineLayout>{}(static_cast<VkPipelineLayout>(pipelineLayout));
+    }
+  };
+
+  template <> struct hash<vk::QueryPool>
+  {
+    std::size_t operator()(vk::QueryPool const& queryPool) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkQueryPool>{}(static_cast<VkQueryPool>(queryPool));
+    }
+  };
+
+  template <> struct hash<vk::Queue>
+  {
+    std::size_t operator()(vk::Queue const& queue) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkQueue>{}(static_cast<VkQueue>(queue));
+    }
+  };
+
+  template <> struct hash<vk::RenderPass>
+  {
+    std::size_t operator()(vk::RenderPass const& renderPass) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkRenderPass>{}(static_cast<VkRenderPass>(renderPass));
+    }
+  };
+
+  template <> struct hash<vk::Sampler>
+  {
+    std::size_t operator()(vk::Sampler const& sampler) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkSampler>{}(static_cast<VkSampler>(sampler));
+    }
+  };
+
+  template <> struct hash<vk::SamplerYcbcrConversion>
+  {
+    std::size_t operator()(vk::SamplerYcbcrConversion const& samplerYcbcrConversion) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkSamplerYcbcrConversion>{}(static_cast<VkSamplerYcbcrConversion>(samplerYcbcrConversion));
+    }
+  };
+
+  template <> struct hash<vk::Semaphore>
+  {
+    std::size_t operator()(vk::Semaphore const& semaphore) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkSemaphore>{}(static_cast<VkSemaphore>(semaphore));
+    }
+  };
+
+  template <> struct hash<vk::ShaderModule>
+  {
+    std::size_t operator()(vk::ShaderModule const& shaderModule) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkShaderModule>{}(static_cast<VkShaderModule>(shaderModule));
+    }
+  };
+
+  template <> struct hash<vk::SurfaceKHR>
+  {
+    std::size_t operator()(vk::SurfaceKHR const& surfaceKHR) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkSurfaceKHR>{}(static_cast<VkSurfaceKHR>(surfaceKHR));
+    }
+  };
+
+  template <> struct hash<vk::SwapchainKHR>
+  {
+    std::size_t operator()(vk::SwapchainKHR const& swapchainKHR) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkSwapchainKHR>{}(static_cast<VkSwapchainKHR>(swapchainKHR));
+    }
+  };
+
+  template <> struct hash<vk::ValidationCacheEXT>
+  {
+    std::size_t operator()(vk::ValidationCacheEXT const& validationCacheEXT) const VULKAN_HPP_NOEXCEPT
+    {
+      return std::hash<VkValidationCacheEXT>{}(static_cast<VkValidationCacheEXT>(validationCacheEXT));
+    }
+  };
+}
 #endif