// Copyright 2018 The SwiftShader Authors. 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.

#include "VkGetProcAddress.h"
#include "VkDevice.hpp"

#include <unordered_map>
#include <string>
#include <vector>

#ifdef __ANDROID__
#include <cerrno>
#include <hardware/hwvulkan.h>
#include <vulkan/vk_android_native_buffer.h>
#endif

namespace vk
{

#define MAKE_VULKAN_GLOBAL_ENTRY(aFunction) { #aFunction, reinterpret_cast<PFN_vkVoidFunction>(aFunction) }
static const std::unordered_map<std::string, PFN_vkVoidFunction> globalFunctionPointers =
{
	MAKE_VULKAN_GLOBAL_ENTRY(vkCreateInstance),
	MAKE_VULKAN_GLOBAL_ENTRY(vkEnumerateInstanceExtensionProperties),
	MAKE_VULKAN_GLOBAL_ENTRY(vkEnumerateInstanceLayerProperties),
	MAKE_VULKAN_GLOBAL_ENTRY(vkEnumerateInstanceVersion),
};
#undef MAKE_VULKAN_GLOBAL_ENTRY

#define MAKE_VULKAN_INSTANCE_ENTRY(aFunction) { #aFunction, reinterpret_cast<PFN_vkVoidFunction>(aFunction) }
static const std::unordered_map<std::string, PFN_vkVoidFunction> instanceFunctionPointers =
{
	MAKE_VULKAN_INSTANCE_ENTRY(vkDestroyInstance),
	MAKE_VULKAN_INSTANCE_ENTRY(vkEnumeratePhysicalDevices),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceFeatures),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceFormatProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceImageFormatProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceQueueFamilyProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceMemoryProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkCreateDevice),
	MAKE_VULKAN_INSTANCE_ENTRY(vkEnumerateDeviceExtensionProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkEnumerateDeviceLayerProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceSparseImageFormatProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkEnumeratePhysicalDeviceGroups),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceFeatures2),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceProperties2),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceFormatProperties2),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceImageFormatProperties2),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceQueueFamilyProperties2),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceMemoryProperties2),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceSparseImageFormatProperties2),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceExternalBufferProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceExternalFenceProperties),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceExternalSemaphoreProperties),
	// VK_KHR_device_group_creation
	MAKE_VULKAN_INSTANCE_ENTRY(vkEnumeratePhysicalDeviceGroupsKHR),
	// VK_KHR_external_fence_capabilities
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceExternalFencePropertiesKHR),
	// VK_KHR_external_memory_capabilities
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceExternalBufferPropertiesKHR),
	// VK_KHR_external_semaphore_capabilities
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceExternalSemaphorePropertiesKHR),
	// VK_KHR_get_physical_device_properties2
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceFeatures2KHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceProperties2KHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceFormatProperties2KHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceImageFormatProperties2KHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceQueueFamilyProperties2KHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceMemoryProperties2KHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceSparseImageFormatProperties2KHR),
#ifndef __ANDROID__
	// VK_KHR_surface
	MAKE_VULKAN_INSTANCE_ENTRY(vkDestroySurfaceKHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceSurfaceSupportKHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceSurfaceCapabilitiesKHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceSurfaceFormatsKHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceSurfacePresentModesKHR),
#endif
#ifdef VK_USE_PLATFORM_XLIB_KHR
	// VK_KHR_xlib_surface
	MAKE_VULKAN_INSTANCE_ENTRY(vkCreateXlibSurfaceKHR),
	MAKE_VULKAN_INSTANCE_ENTRY(vkGetPhysicalDeviceXlibPresentationSupportKHR),
#endif
};
#undef MAKE_VULKAN_INSTANCE_ENTRY

#define MAKE_VULKAN_DEVICE_ENTRY(aFunction) { #aFunction, reinterpret_cast<PFN_vkVoidFunction>(aFunction) }
static const std::unordered_map<std::string, PFN_vkVoidFunction> deviceFunctionPointers =
{
	MAKE_VULKAN_DEVICE_ENTRY(vkGetInstanceProcAddr),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceProcAddr),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyDevice),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceQueue),
	MAKE_VULKAN_DEVICE_ENTRY(vkQueueSubmit),
	MAKE_VULKAN_DEVICE_ENTRY(vkQueueWaitIdle),
	MAKE_VULKAN_DEVICE_ENTRY(vkDeviceWaitIdle),
	MAKE_VULKAN_DEVICE_ENTRY(vkAllocateMemory),
	MAKE_VULKAN_DEVICE_ENTRY(vkFreeMemory),
	MAKE_VULKAN_DEVICE_ENTRY(vkMapMemory),
	MAKE_VULKAN_DEVICE_ENTRY(vkUnmapMemory),
	MAKE_VULKAN_DEVICE_ENTRY(vkFlushMappedMemoryRanges),
	MAKE_VULKAN_DEVICE_ENTRY(vkInvalidateMappedMemoryRanges),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceMemoryCommitment),
	MAKE_VULKAN_DEVICE_ENTRY(vkBindBufferMemory),
	MAKE_VULKAN_DEVICE_ENTRY(vkBindImageMemory),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetBufferMemoryRequirements),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetImageMemoryRequirements),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetImageSparseMemoryRequirements),
	MAKE_VULKAN_DEVICE_ENTRY(vkQueueBindSparse),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateFence),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyFence),
	MAKE_VULKAN_DEVICE_ENTRY(vkResetFences),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetFenceStatus),
	MAKE_VULKAN_DEVICE_ENTRY(vkWaitForFences),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateSemaphore),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroySemaphore),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateEvent),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyEvent),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetEventStatus),
	MAKE_VULKAN_DEVICE_ENTRY(vkSetEvent),
	MAKE_VULKAN_DEVICE_ENTRY(vkResetEvent),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateQueryPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyQueryPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetQueryPoolResults),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateBufferView),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyBufferView),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetImageSubresourceLayout),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateImageView),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyImageView),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateShaderModule),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyShaderModule),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreatePipelineCache),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyPipelineCache),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetPipelineCacheData),
	MAKE_VULKAN_DEVICE_ENTRY(vkMergePipelineCaches),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateGraphicsPipelines),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateComputePipelines),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyPipeline),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreatePipelineLayout),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyPipelineLayout),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateSampler),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroySampler),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateDescriptorSetLayout),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyDescriptorSetLayout),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateDescriptorPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyDescriptorPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkResetDescriptorPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkAllocateDescriptorSets),
	MAKE_VULKAN_DEVICE_ENTRY(vkFreeDescriptorSets),
	MAKE_VULKAN_DEVICE_ENTRY(vkUpdateDescriptorSets),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateFramebuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyFramebuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateRenderPass),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyRenderPass),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetRenderAreaGranularity),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateCommandPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyCommandPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkResetCommandPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkAllocateCommandBuffers),
	MAKE_VULKAN_DEVICE_ENTRY(vkFreeCommandBuffers),
	MAKE_VULKAN_DEVICE_ENTRY(vkBeginCommandBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkEndCommandBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkResetCommandBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdBindPipeline),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetViewport),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetScissor),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetLineWidth),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetDepthBias),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetBlendConstants),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetDepthBounds),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetStencilCompareMask),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetStencilWriteMask),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetStencilReference),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdBindDescriptorSets),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdBindIndexBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdBindVertexBuffers),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdDraw),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdDrawIndexed),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdDrawIndirect),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdDrawIndexedIndirect),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdDispatch),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdDispatchIndirect),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdCopyBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdCopyImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdBlitImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdCopyBufferToImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdCopyImageToBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdUpdateBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdFillBuffer),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdClearColorImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdClearDepthStencilImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdClearAttachments),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdResolveImage),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetEvent),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdResetEvent),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdWaitEvents),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdPipelineBarrier),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdBeginQuery),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdEndQuery),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdResetQueryPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdWriteTimestamp),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdCopyQueryPoolResults),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdPushConstants),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdBeginRenderPass),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdNextSubpass),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdEndRenderPass),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdExecuteCommands),
	MAKE_VULKAN_DEVICE_ENTRY(vkBindBufferMemory2),
	MAKE_VULKAN_DEVICE_ENTRY(vkBindImageMemory2),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceGroupPeerMemoryFeatures),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetDeviceMask),
	MAKE_VULKAN_DEVICE_ENTRY(vkCmdDispatchBase),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetImageMemoryRequirements2),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetBufferMemoryRequirements2),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetImageSparseMemoryRequirements2),
	MAKE_VULKAN_DEVICE_ENTRY(vkTrimCommandPool),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceQueue2),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateSamplerYcbcrConversion),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroySamplerYcbcrConversion),
	MAKE_VULKAN_DEVICE_ENTRY(vkCreateDescriptorUpdateTemplate),
	MAKE_VULKAN_DEVICE_ENTRY(vkDestroyDescriptorUpdateTemplate),
	MAKE_VULKAN_DEVICE_ENTRY(vkUpdateDescriptorSetWithTemplate),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetDescriptorSetLayoutSupport),
#ifdef __ANDROID__
	MAKE_VULKAN_DEVICE_ENTRY(vkGetSwapchainGrallocUsageANDROID),
	MAKE_VULKAN_DEVICE_ENTRY(vkGetSwapchainGrallocUsage2ANDROID),
	MAKE_VULKAN_DEVICE_ENTRY(vkAcquireImageANDROID),
	MAKE_VULKAN_DEVICE_ENTRY(vkQueueSignalReleaseImageANDROID),
#endif
};

static const std::vector<std::pair<const char*, std::unordered_map<std::string, PFN_vkVoidFunction>>> deviceExtensionFunctionPointers =
{
	// VK_KHR_descriptor_update_template
	{
		VK_KHR_DESCRIPTOR_UPDATE_TEMPLATE_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkCreateDescriptorUpdateTemplateKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkDestroyDescriptorUpdateTemplateKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkUpdateDescriptorSetWithTemplateKHR),
		}
	},
	// VK_KHR_device_group
	{
		VK_KHR_DEVICE_GROUP_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceGroupPeerMemoryFeaturesKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkCmdSetDeviceMaskKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkCmdDispatchBaseKHR),
		}
	},
	// VK_KHR_maintenance1
	{
		VK_KHR_MAINTENANCE1_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkTrimCommandPoolKHR),
		}
	},
	// VK_KHR_sampler_ycbcr_conversion
	{
		VK_KHR_SAMPLER_YCBCR_CONVERSION_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkCreateSamplerYcbcrConversionKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkDestroySamplerYcbcrConversionKHR),
		}
	},
	// VK_KHR_bind_memory2
	{
		VK_KHR_BIND_MEMORY_2_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkBindBufferMemory2KHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkBindImageMemory2KHR),
		}
	},
	// VK_KHR_get_memory_requirements2
	{
		VK_KHR_GET_MEMORY_REQUIREMENTS_2_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkGetImageMemoryRequirements2KHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkGetBufferMemoryRequirements2KHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkGetImageSparseMemoryRequirements2KHR),
		}
	},
	// VK_KHR_maintenance3
	{
		VK_KHR_MAINTENANCE3_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkGetDescriptorSetLayoutSupportKHR),
		}
	},
#ifndef __ANDROID__
	// VK_KHR_swapchain
	{
		VK_KHR_SWAPCHAIN_EXTENSION_NAME,
		{
			MAKE_VULKAN_DEVICE_ENTRY(vkCreateSwapchainKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkDestroySwapchainKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkGetSwapchainImagesKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkAcquireNextImageKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkQueuePresentKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceGroupPresentCapabilitiesKHR),
			MAKE_VULKAN_DEVICE_ENTRY(vkGetDeviceGroupSurfacePresentModesKHR),
		}
	},
#endif
};

#undef MAKE_VULKAN_DEVICE_ENTRY

PFN_vkVoidFunction GetInstanceProcAddr(VkInstance instance, const char* pName)
{
	auto globalFunction = globalFunctionPointers.find(std::string(pName));
	if(globalFunction != globalFunctionPointers.end())
	{
		return globalFunction->second;
	}

	if(instance != VK_NULL_HANDLE)
	{
		auto instanceFunction = instanceFunctionPointers.find(std::string(pName));
		if(instanceFunction != instanceFunctionPointers.end())
		{
			return instanceFunction->second;
		}

		auto deviceFunction = deviceFunctionPointers.find(std::string(pName));
		if(deviceFunction != deviceFunctionPointers.end())
		{
			return deviceFunction->second;
		}

		for(const auto& deviceExtensionFunctions : deviceExtensionFunctionPointers)
		{
			deviceFunction = deviceExtensionFunctions.second.find(std::string(pName));
			if(deviceFunction != deviceExtensionFunctions.second.end())
			{
				return deviceFunction->second;
			}
		}
	}

	return nullptr;
}

PFN_vkVoidFunction GetDeviceProcAddr(VkDevice device, const char* pName)
{
	auto deviceFunction = deviceFunctionPointers.find(std::string(pName));
	if(deviceFunction != deviceFunctionPointers.end())
	{
		return deviceFunction->second;
	}

	vk::Device* myDevice = Cast(device);
	for(const auto& deviceExtensionFunctions : deviceExtensionFunctionPointers)
	{
		if(myDevice->hasExtension(deviceExtensionFunctions.first))
		{
			deviceFunction = deviceExtensionFunctions.second.find(std::string(pName));
			if(deviceFunction != deviceExtensionFunctions.second.end())
			{
				return deviceFunction->second;
			}
		}
	}

	return nullptr;
}

}

#ifdef __ANDROID__

extern "C" hwvulkan_module_t HAL_MODULE_INFO_SYM;

namespace {

	int CloseDevice(struct hw_device_t *) { return 0; }

	hwvulkan_device_t hal_device = {
		.common = {
			.tag = HARDWARE_DEVICE_TAG,
			.version = HWVULKAN_DEVICE_API_VERSION_0_1,
			.module = &HAL_MODULE_INFO_SYM.common,
			.close = CloseDevice,
		},
		.EnumerateInstanceExtensionProperties = vkEnumerateInstanceExtensionProperties,
		.CreateInstance = vkCreateInstance,
		.GetInstanceProcAddr = vkGetInstanceProcAddr,
	};

	int OpenDevice(const hw_module_t *module, const char *id, hw_device_t **device)
	{
		if (strcmp(id, HWVULKAN_DEVICE_0) != 0) return -ENOENT;
		*device = &hal_device.common;
		return 0;
	}

	hw_module_methods_t module_methods = { .open = OpenDevice };

}

extern "C" hwvulkan_module_t HAL_MODULE_INFO_SYM =
{
	.common =
	{
		.tag = HARDWARE_MODULE_TAG,
		.module_api_version = HWVULKAN_MODULE_API_VERSION_0_1,
		.hal_api_version = HARDWARE_HAL_API_VERSION,
		.id = HWVULKAN_HARDWARE_MODULE_ID,
		.name = "Swiftshader Pastel",
		.author = "Google",
		.methods = &module_methods,
	}
};

#endif