// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#include "common/assert.h"
#include "common/polyfill_ranges.h"
#include "video_core/renderer_vulkan/present/util.h"

namespace Vulkan {

vk::Image CreateWrappedImage(MemoryAllocator& allocator, VkExtent2D dimensions, VkFormat format) {
    const VkImageCreateInfo image_ci{
        .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .imageType = VK_IMAGE_TYPE_2D,
        .format = format,
        .extent = {.width = dimensions.width, .height = dimensions.height, .depth = 1},
        .mipLevels = 1,
        .arrayLayers = 1,
        .samples = VK_SAMPLE_COUNT_1_BIT,
        .tiling = VK_IMAGE_TILING_OPTIMAL,
        .usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_STORAGE_BIT |
                 VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
        .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
        .queueFamilyIndexCount = 0,
        .pQueueFamilyIndices = nullptr,
        .initialLayout = VK_IMAGE_LAYOUT_UNDEFINED,
    };
    return allocator.CreateImage(image_ci);
}

void TransitionImageLayout(vk::CommandBuffer& cmdbuf, VkImage image, VkImageLayout target_layout,
                           VkImageLayout source_layout) {
    constexpr VkFlags flags{VK_ACCESS_COLOR_ATTACHMENT_READ_BIT |
                            VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_SHADER_READ_BIT};
    const VkImageMemoryBarrier barrier{
        .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
        .pNext = nullptr,
        .srcAccessMask = flags,
        .dstAccessMask = flags,
        .oldLayout = source_layout,
        .newLayout = target_layout,
        .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
        .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
        .image = image,
        .subresourceRange{
            .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
            .baseMipLevel = 0,
            .levelCount = 1,
            .baseArrayLayer = 0,
            .layerCount = 1,
        },
    };
    cmdbuf.PipelineBarrier(VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
                           0, barrier);
}

void UploadImage(const Device& device, MemoryAllocator& allocator, Scheduler& scheduler,
                 vk::Image& image, VkExtent2D dimensions, VkFormat format,
                 std::span<const u8> initial_contents) {
    const VkBufferCreateInfo upload_ci = {
        .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .size = initial_contents.size_bytes(),
        .usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
        .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
        .queueFamilyIndexCount = 0,
        .pQueueFamilyIndices = nullptr,
    };
    auto upload_buffer = allocator.CreateBuffer(upload_ci, MemoryUsage::Upload);
    std::ranges::copy(initial_contents, upload_buffer.Mapped().begin());
    upload_buffer.Flush();

    const std::array<VkBufferImageCopy, 1> regions{{{
        .bufferOffset = 0,
        .bufferRowLength = dimensions.width,
        .bufferImageHeight = dimensions.height,
        .imageSubresource{.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
                          .mipLevel = 0,
                          .baseArrayLayer = 0,
                          .layerCount = 1},
        .imageOffset{},
        .imageExtent{.width = dimensions.width, .height = dimensions.height, .depth = 1},
    }}};

    scheduler.RequestOutsideRenderPassOperationContext();
    scheduler.Record([&](vk::CommandBuffer cmdbuf) {
        TransitionImageLayout(cmdbuf, *image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
                              VK_IMAGE_LAYOUT_UNDEFINED);
        cmdbuf.CopyBufferToImage(*upload_buffer, *image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
                                 regions);
        TransitionImageLayout(cmdbuf, *image, VK_IMAGE_LAYOUT_GENERAL,
                              VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
    });
    scheduler.Finish();
}

vk::ImageView CreateWrappedImageView(const Device& device, vk::Image& image, VkFormat format) {
    return device.GetLogical().CreateImageView(VkImageViewCreateInfo{
        .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .image = *image,
        .viewType = VK_IMAGE_VIEW_TYPE_2D,
        .format = format,
        .components{},
        .subresourceRange{.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
                          .baseMipLevel = 0,
                          .levelCount = 1,
                          .baseArrayLayer = 0,
                          .layerCount = 1},
    });
}

vk::RenderPass CreateWrappedRenderPass(const Device& device, VkFormat format,
                                       VkImageLayout initial_layout) {
    const VkAttachmentDescription attachment{
        .flags = VK_ATTACHMENT_DESCRIPTION_MAY_ALIAS_BIT,
        .format = format,
        .samples = VK_SAMPLE_COUNT_1_BIT,
        .loadOp = initial_layout == VK_IMAGE_LAYOUT_UNDEFINED ? VK_ATTACHMENT_LOAD_OP_DONT_CARE
                                                              : VK_ATTACHMENT_LOAD_OP_LOAD,
        .storeOp = VK_ATTACHMENT_STORE_OP_STORE,
        .stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD,
        .stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE,
        .initialLayout = initial_layout,
        .finalLayout = VK_IMAGE_LAYOUT_GENERAL,
    };

    constexpr VkAttachmentReference color_attachment_ref{
        .attachment = 0,
        .layout = VK_IMAGE_LAYOUT_GENERAL,
    };

    const VkSubpassDescription subpass_description{
        .flags = 0,
        .pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
        .inputAttachmentCount = 0,
        .pInputAttachments = nullptr,
        .colorAttachmentCount = 1,
        .pColorAttachments = &color_attachment_ref,
        .pResolveAttachments = nullptr,
        .pDepthStencilAttachment = nullptr,
        .preserveAttachmentCount = 0,
        .pPreserveAttachments = nullptr,
    };

    constexpr VkSubpassDependency dependency{
        .srcSubpass = VK_SUBPASS_EXTERNAL,
        .dstSubpass = 0,
        .srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
        .dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
        .srcAccessMask = 0,
        .dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT,
        .dependencyFlags = 0,
    };

    return device.GetLogical().CreateRenderPass(VkRenderPassCreateInfo{
        .sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .attachmentCount = 1,
        .pAttachments = &attachment,
        .subpassCount = 1,
        .pSubpasses = &subpass_description,
        .dependencyCount = 1,
        .pDependencies = &dependency,
    });
}

vk::Framebuffer CreateWrappedFramebuffer(const Device& device, vk::RenderPass& render_pass,
                                         vk::ImageView& dest_image, VkExtent2D extent) {
    return device.GetLogical().CreateFramebuffer(VkFramebufferCreateInfo{
        .sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .renderPass = *render_pass,
        .attachmentCount = 1,
        .pAttachments = dest_image.address(),
        .width = extent.width,
        .height = extent.height,
        .layers = 1,
    });
}

vk::Sampler CreateWrappedSampler(const Device& device, VkFilter filter) {
    return device.GetLogical().CreateSampler(VkSamplerCreateInfo{
        .sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .magFilter = filter,
        .minFilter = filter,
        .mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR,
        .addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
        .addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
        .addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
        .mipLodBias = 0.0f,
        .anisotropyEnable = VK_FALSE,
        .maxAnisotropy = 0.0f,
        .compareEnable = VK_FALSE,
        .compareOp = VK_COMPARE_OP_NEVER,
        .minLod = 0.0f,
        .maxLod = 0.0f,
        .borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK,
        .unnormalizedCoordinates = VK_FALSE,
    });
}

vk::ShaderModule CreateWrappedShaderModule(const Device& device, std::span<const u32> code) {
    return device.GetLogical().CreateShaderModule(VkShaderModuleCreateInfo{
        .sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .codeSize = code.size_bytes(),
        .pCode = code.data(),
    });
}

vk::DescriptorPool CreateWrappedDescriptorPool(const Device& device, size_t max_descriptors,
                                               size_t max_sets,
                                               std::initializer_list<VkDescriptorType> types) {
    std::vector<VkDescriptorPoolSize> pool_sizes(types.size());
    for (u32 i = 0; i < types.size(); i++) {
        pool_sizes[i] = VkDescriptorPoolSize{
            .type = std::data(types)[i],
            .descriptorCount = static_cast<u32>(max_descriptors),
        };
    }

    return device.GetLogical().CreateDescriptorPool(VkDescriptorPoolCreateInfo{
        .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .maxSets = static_cast<u32>(max_sets),
        .poolSizeCount = static_cast<u32>(pool_sizes.size()),
        .pPoolSizes = pool_sizes.data(),
    });
}

vk::DescriptorSetLayout CreateWrappedDescriptorSetLayout(
    const Device& device, std::initializer_list<VkDescriptorType> types) {
    std::vector<VkDescriptorSetLayoutBinding> bindings(types.size());
    for (size_t i = 0; i < types.size(); i++) {
        bindings[i] = {
            .binding = static_cast<u32>(i),
            .descriptorType = std::data(types)[i],
            .descriptorCount = 1,
            .stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
            .pImmutableSamplers = nullptr,
        };
    }

    return device.GetLogical().CreateDescriptorSetLayout(VkDescriptorSetLayoutCreateInfo{
        .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .bindingCount = static_cast<u32>(bindings.size()),
        .pBindings = bindings.data(),
    });
}

vk::DescriptorSets CreateWrappedDescriptorSets(vk::DescriptorPool& pool,
                                               vk::Span<VkDescriptorSetLayout> layouts) {
    return pool.Allocate(VkDescriptorSetAllocateInfo{
        .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
        .pNext = nullptr,
        .descriptorPool = *pool,
        .descriptorSetCount = layouts.size(),
        .pSetLayouts = layouts.data(),
    });
}

vk::PipelineLayout CreateWrappedPipelineLayout(const Device& device,
                                               vk::DescriptorSetLayout& layout) {
    return device.GetLogical().CreatePipelineLayout(VkPipelineLayoutCreateInfo{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .setLayoutCount = 1,
        .pSetLayouts = layout.address(),
        .pushConstantRangeCount = 0,
        .pPushConstantRanges = nullptr,
    });
}

vk::Pipeline CreateWrappedPipeline(const Device& device, vk::RenderPass& renderpass,
                                   vk::PipelineLayout& layout,
                                   std::tuple<vk::ShaderModule&, vk::ShaderModule&> shaders,
                                   bool enable_blending) {
    const std::array<VkPipelineShaderStageCreateInfo, 2> shader_stages{{
        {
            .sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
            .pNext = nullptr,
            .flags = 0,
            .stage = VK_SHADER_STAGE_VERTEX_BIT,
            .module = *std::get<0>(shaders),
            .pName = "main",
            .pSpecializationInfo = nullptr,
        },
        {
            .sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
            .pNext = nullptr,
            .flags = 0,
            .stage = VK_SHADER_STAGE_FRAGMENT_BIT,
            .module = *std::get<1>(shaders),
            .pName = "main",
            .pSpecializationInfo = nullptr,
        },
    }};

    constexpr VkPipelineVertexInputStateCreateInfo vertex_input_ci{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .vertexBindingDescriptionCount = 0,
        .pVertexBindingDescriptions = nullptr,
        .vertexAttributeDescriptionCount = 0,
        .pVertexAttributeDescriptions = nullptr,
    };

    constexpr VkPipelineInputAssemblyStateCreateInfo input_assembly_ci{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP,
        .primitiveRestartEnable = VK_FALSE,
    };

    constexpr VkPipelineViewportStateCreateInfo viewport_state_ci{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .viewportCount = 1,
        .pViewports = nullptr,
        .scissorCount = 1,
        .pScissors = nullptr,
    };

    constexpr VkPipelineRasterizationStateCreateInfo rasterization_ci{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .depthClampEnable = VK_FALSE,
        .rasterizerDiscardEnable = VK_FALSE,
        .polygonMode = VK_POLYGON_MODE_FILL,
        .cullMode = VK_CULL_MODE_NONE,
        .frontFace = VK_FRONT_FACE_CLOCKWISE,
        .depthBiasEnable = VK_FALSE,
        .depthBiasConstantFactor = 0.0f,
        .depthBiasClamp = 0.0f,
        .depthBiasSlopeFactor = 0.0f,
        .lineWidth = 1.0f,
    };

    constexpr VkPipelineMultisampleStateCreateInfo multisampling_ci{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .rasterizationSamples = VK_SAMPLE_COUNT_1_BIT,
        .sampleShadingEnable = VK_FALSE,
        .minSampleShading = 0.0f,
        .pSampleMask = nullptr,
        .alphaToCoverageEnable = VK_FALSE,
        .alphaToOneEnable = VK_FALSE,
    };

    constexpr VkPipelineColorBlendAttachmentState color_blend_attachment_disabled{
        .blendEnable = VK_FALSE,
        .srcColorBlendFactor = VK_BLEND_FACTOR_ZERO,
        .dstColorBlendFactor = VK_BLEND_FACTOR_ZERO,
        .colorBlendOp = VK_BLEND_OP_ADD,
        .srcAlphaBlendFactor = VK_BLEND_FACTOR_ZERO,
        .dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO,
        .alphaBlendOp = VK_BLEND_OP_ADD,
        .colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT |
                          VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
    };

    constexpr VkPipelineColorBlendAttachmentState color_blend_attachment_enabled{
        .blendEnable = VK_TRUE,
        .srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA,
        .dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
        .colorBlendOp = VK_BLEND_OP_ADD,
        .srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE,
        .dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO,
        .alphaBlendOp = VK_BLEND_OP_ADD,
        .colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT |
                          VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT,
    };

    const VkPipelineColorBlendStateCreateInfo color_blend_ci{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .logicOpEnable = VK_FALSE,
        .logicOp = VK_LOGIC_OP_COPY,
        .attachmentCount = 1,
        .pAttachments =
            enable_blending ? &color_blend_attachment_enabled : &color_blend_attachment_disabled,
        .blendConstants = {0.0f, 0.0f, 0.0f, 0.0f},
    };

    constexpr std::array dynamic_states{
        VK_DYNAMIC_STATE_VIEWPORT,
        VK_DYNAMIC_STATE_SCISSOR,
    };

    const VkPipelineDynamicStateCreateInfo dynamic_state_ci{
        .sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .dynamicStateCount = static_cast<u32>(dynamic_states.size()),
        .pDynamicStates = dynamic_states.data(),
    };

    return device.GetLogical().CreateGraphicsPipeline(VkGraphicsPipelineCreateInfo{
        .sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .stageCount = static_cast<u32>(shader_stages.size()),
        .pStages = shader_stages.data(),
        .pVertexInputState = &vertex_input_ci,
        .pInputAssemblyState = &input_assembly_ci,
        .pTessellationState = nullptr,
        .pViewportState = &viewport_state_ci,
        .pRasterizationState = &rasterization_ci,
        .pMultisampleState = &multisampling_ci,
        .pDepthStencilState = nullptr,
        .pColorBlendState = &color_blend_ci,
        .pDynamicState = &dynamic_state_ci,
        .layout = *layout,
        .renderPass = *renderpass,
        .subpass = 0,
        .basePipelineHandle = 0,
        .basePipelineIndex = 0,
    });
}

VkWriteDescriptorSet CreateWriteDescriptorSet(std::vector<VkDescriptorImageInfo>& images,
                                              VkSampler sampler, VkImageView view,
                                              VkDescriptorSet set, u32 binding) {
    ASSERT(images.capacity() > images.size());
    auto& image_info = images.emplace_back(VkDescriptorImageInfo{
        .sampler = sampler,
        .imageView = view,
        .imageLayout = VK_IMAGE_LAYOUT_GENERAL,
    });

    return VkWriteDescriptorSet{
        .sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
        .pNext = nullptr,
        .dstSet = set,
        .dstBinding = binding,
        .dstArrayElement = 0,
        .descriptorCount = 1,
        .descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
        .pImageInfo = &image_info,
        .pBufferInfo = nullptr,
        .pTexelBufferView = nullptr,
    };
}

vk::Sampler CreateBilinearSampler(const Device& device) {
    const VkSamplerCreateInfo ci{
        .sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .magFilter = VK_FILTER_LINEAR,
        .minFilter = VK_FILTER_LINEAR,
        .mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST,
        .addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
        .addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
        .addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
        .mipLodBias = 0.0f,
        .anisotropyEnable = VK_FALSE,
        .maxAnisotropy = 0.0f,
        .compareEnable = VK_FALSE,
        .compareOp = VK_COMPARE_OP_NEVER,
        .minLod = 0.0f,
        .maxLod = 0.0f,
        .borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK,
        .unnormalizedCoordinates = VK_FALSE,
    };

    return device.GetLogical().CreateSampler(ci);
}

vk::Sampler CreateNearestNeighborSampler(const Device& device) {
    const VkSamplerCreateInfo ci_nn{
        .sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO,
        .pNext = nullptr,
        .flags = 0,
        .magFilter = VK_FILTER_NEAREST,
        .minFilter = VK_FILTER_NEAREST,
        .mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST,
        .addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
        .addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
        .addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
        .mipLodBias = 0.0f,
        .anisotropyEnable = VK_FALSE,
        .maxAnisotropy = 0.0f,
        .compareEnable = VK_FALSE,
        .compareOp = VK_COMPARE_OP_NEVER,
        .minLod = 0.0f,
        .maxLod = 0.0f,
        .borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_BLACK,
        .unnormalizedCoordinates = VK_FALSE,
    };

    return device.GetLogical().CreateSampler(ci_nn);
}

void ClearColorImage(vk::CommandBuffer& cmdbuf, VkImage image) {
    static constexpr std::array<VkImageSubresourceRange, 1> subresources{{{
        .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
        .baseMipLevel = 0,
        .levelCount = 1,
        .baseArrayLayer = 0,
        .layerCount = 1,
    }}};
    TransitionImageLayout(cmdbuf, image, VK_IMAGE_LAYOUT_GENERAL, VK_IMAGE_LAYOUT_UNDEFINED);
    cmdbuf.ClearColorImage(image, VK_IMAGE_LAYOUT_GENERAL, {}, subresources);
}

void BeginRenderPass(vk::CommandBuffer& cmdbuf, VkRenderPass render_pass, VkFramebuffer framebuffer,
                     VkExtent2D extent) {
    const VkRenderPassBeginInfo renderpass_bi{
        .sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO,
        .pNext = nullptr,
        .renderPass = render_pass,
        .framebuffer = framebuffer,
        .renderArea{
            .offset{},
            .extent = extent,
        },
        .clearValueCount = 0,
        .pClearValues = nullptr,
    };
    cmdbuf.BeginRenderPass(renderpass_bi, VK_SUBPASS_CONTENTS_INLINE);

    const VkViewport viewport{
        .x = 0.0f,
        .y = 0.0f,
        .width = static_cast<float>(extent.width),
        .height = static_cast<float>(extent.height),
        .minDepth = 0.0f,
        .maxDepth = 1.0f,
    };
    const VkRect2D scissor{
        .offset = {0, 0},
        .extent = extent,
    };
    cmdbuf.SetViewport(0, viewport);
    cmdbuf.SetScissor(0, scissor);
}

} // namespace Vulkan