// Copyright 2019 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef SRC_DAWN_NATIVE_VULKAN_UTILSVULKAN_H_
#define SRC_DAWN_NATIVE_VULKAN_UTILSVULKAN_H_

#include <string>
#include <string_view>
#include <vector>

#include "dawn/common/StackAllocated.h"
#include "dawn/common/vulkan_platform.h"
#include "dawn/native/Commands.h"
#include "dawn/native/dawn_platform.h"

namespace dawn::native {
struct ProgrammableStage;
union OverrideScalar;
}  // namespace dawn::native

namespace dawn::native::vulkan {

class Device;
struct VulkanFunctions;

// A Helper type used to build a pNext chain of extension structs.
// Usage is:
//   1) Create instance, passing the address of the first struct in the chain. This requires
//      pNext to be nullptr. If you already have a chain you need to pass a pointer to the tail
//      of it.
//
//   2) Call Add(&vk_struct) every time a new struct needs to be appended to the chain.
//
//   3) Alternatively, call Add(&vk_struct, VK_STRUCTURE_TYPE_XXX) to initialize the struct
//      with a given VkStructureType value while appending it to the chain.
//
// Examples:
//     VkPhysicalFeatures2 features2 = {
//       .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2,
//       .pNext = nullptr,
//     };
//
//     PNextChainBuilder featuresChain(&features2);
//
//     featuresChain.Add(&featuresExtensions.subgroupSizeControl,
//                       VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_FEATURES_EXT);
//
// Note:
//   The build option `use_asan_unowned_ptr` checks the pointer to the current
//   tail it is not dangling. So every structs in the chain must be declared
//   before `PNextChainBuilder`.
//
struct PNextChainBuilder : public StackAllocated {
    // Constructor takes the address of a Vulkan structure instance, and
    // walks its pNext chain to record the current location of its tail.
    //
    // NOTE: Some VK_STRUCT_TYPEs define their pNext field as a const void*
    // which is why the VkBaseOutStructure* casts below are necessary.
    template <typename VK_STRUCT_TYPE>
    explicit PNextChainBuilder(VK_STRUCT_TYPE* head)
        : mCurrent(reinterpret_cast<VkBaseOutStructure*>(head)) {
        while (mCurrent->pNext != nullptr) {
            mCurrent = mCurrent->pNext;
        }
    }

    // Add one item to the chain. |vk_struct| must be a Vulkan structure
    // that is already initialized.
    template <typename VK_STRUCT_TYPE>
    void Add(VK_STRUCT_TYPE* vkStruct) {
        // Checks to ensure proper type safety.
        static_assert(offsetof(VK_STRUCT_TYPE, sType) == offsetof(VkBaseOutStructure, sType) &&
                          offsetof(VK_STRUCT_TYPE, pNext) == offsetof(VkBaseOutStructure, pNext),
                      "Argument type is not a proper Vulkan structure type");
        vkStruct->pNext = nullptr;

        mCurrent->pNext = reinterpret_cast<VkBaseOutStructure*>(vkStruct);
        mCurrent = mCurrent->pNext;
    }

    // A variant of Add() above that also initializes the |sType| field in |vk_struct|.
    template <typename VK_STRUCT_TYPE>
    void Add(VK_STRUCT_TYPE* vkStruct, VkStructureType sType) {
        vkStruct->sType = sType;
        Add(vkStruct);
    }

  private:
    raw_ptr<VkBaseOutStructure> mCurrent;
};

VkCompareOp ToVulkanCompareOp(wgpu::CompareFunction op);

VkFilter ToVulkanSamplerFilter(wgpu::FilterMode filter);

VkImageAspectFlags VulkanAspectMask(const Aspect& aspects);

VkShaderStageFlags VulkanShaderStages(wgpu::ShaderStage stages);
VkShaderStageFlagBits VulkanShaderStage(SingleShaderStage stage);

VkAttachmentLoadOp VulkanAttachmentLoadOp(wgpu::LoadOp op);
VkAttachmentStoreOp VulkanAttachmentStoreOp(wgpu::StoreOp op);

TexelExtent3D ComputeTextureCopyExtent(const TextureCopy& textureCopy,
                                       const TexelExtent3D& copySize);

// TODO(crbug.com/424536624): Remove this overload and use BufferCopy instead of
// TexelCopyBufferLayout.
VkBufferImageCopy ComputeBufferImageCopyRegion(const TexelCopyBufferLayout& dataLayout,
                                               const TextureCopy& textureCopy,
                                               const BlockExtent3D& copySize);
// Note: bufferCopy.buffer is ignored
VkBufferImageCopy ComputeBufferImageCopyRegion(const BufferCopy& bufferCopy,
                                               const TextureCopy& textureCopy,
                                               const BlockExtent3D& copySize);

// Gets the associated VkObjectType for any non-dispatchable handle
template <class HandleType>
VkObjectType GetVkObjectType(HandleType handle);

void SetDebugNameInternal(Device* device,
                          VkObjectType objectType,
                          uint64_t objectHandle,
                          const char* prefix,
                          std::string_view label);

// The majority of Vulkan handles are "non-dispatchable". Dawn wraps these by overriding
// VK_DEFINE_NON_DISPATCHABLE_HANDLE to add some capabilities like making null comparisons
// easier. In those cases we can make setting the debug name a bit easier by getting the
// object type automatically and handling the indirection to the native handle.
template <typename Tag, typename HandleType>
void SetDebugName(Device* device,
                  detail::VkHandle<Tag, HandleType> objectHandle,
                  const char* prefix,
                  std::string_view label = {}) {
    uint64_t handle;
    if constexpr (std::is_same_v<HandleType, uint64_t>) {
        handle = objectHandle.GetHandle();
    } else {
        handle = reinterpret_cast<uint64_t>(objectHandle.GetHandle());
    }
    SetDebugNameInternal(device, GetVkObjectType(objectHandle), handle, prefix, label);
}

// Handles like VkQueue and VKDevice require a special path because they are dispatchable, so
// they require an explicit VkObjectType and cast to a uint64_t directly rather than by getting
// the non-dispatchable wrapper's underlying handle.
template <typename HandleType>
void SetDebugName(Device* device,
                  VkObjectType objectType,
                  HandleType objectHandle,
                  const char* prefix,
                  std::string_view label = {}) {
    SetDebugNameInternal(device, objectType, reinterpret_cast<uint64_t>(objectHandle), prefix,
                         label);
}

std::string GetNextDeviceDebugPrefix();
std::string GetDeviceDebugPrefixFromDebugName(const char* debugName);

// Get the properties for the given format.
// https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VkDrmFormatModifierPropertiesEXT.html
std::vector<VkDrmFormatModifierPropertiesEXT> GetFormatModifierProps(
    const VulkanFunctions& fn,
    VkPhysicalDevice vkPhysicalDevice,
    VkFormat format);

// Get the properties for the (format, modifier) pair.
// https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VkDrmFormatModifierPropertiesEXT.html
ResultOrError<VkDrmFormatModifierPropertiesEXT> GetFormatModifierProps(
    const VulkanFunctions& fn,
    VkPhysicalDevice vkPhysicalDevice,
    VkFormat format,
    uint64_t modifier);

ResultOrError<VkSamplerYcbcrConversion> CreateSamplerYCbCrConversionCreateInfo(
    YCbCrVkDescriptor yCbCrDescriptor,
    Device* device);

// TODO(42240963): properly surface the limit.
// Linux nearly always exposes 4096.
// https://vulkan.gpuinfo.org/displayextensionproperty.php?platform=linux&extensionname=VK_EXT_external_memory_host&extensionproperty=minImportedHostPointerAlignment
constexpr uint32_t kMinimumHostMappedPointerAlignment = 4096u;

}  // namespace dawn::native::vulkan

#endif  // SRC_DAWN_NATIVE_VULKAN_UTILSVULKAN_H_