TextureLoom.cpp

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#include "TextureLoom.hpp"
 
#include "MayaFlux/Core/Backends/Graphics/Vulkan/BackendResoureManager.hpp"
#include "MayaFlux/Core/Backends/Graphics/Vulkan/VKImage.hpp"
#include "MayaFlux/Core/Backends/Graphics/Vulkan/VulkanBackend.hpp"
 
#include "MayaFlux/Kakshya/NDData/TextureAccess.hpp"
 
#include "MayaFlux/Buffers/VKBuffer.hpp"
#include "MayaFlux/Registry/BackendRegistry.hpp"
#include "MayaFlux/Registry/Service/BufferService.hpp"
 
#include "MayaFlux/Journal/Archivist.hpp"
 
namespace MayaFlux::Portal::Graphics {
 
bool TextureLoom::s_initialized = false;
 
bool TextureLoom::initialize(const std::shared_ptr<Core::VulkanBackend>& backend)
{
    if (s_initialized) {
        MF_WARN(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom already initialized (static flag)");
        return true;
    }
 
    if (!backend) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Cannot initialize TextureLoom with null backend");
        return false;
    }
 
    if (m_backend) {
        MF_WARN(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom already initialized");
        return true;
    }
 
    m_backend = backend;
    m_resource_manager = &m_backend->get_resource_manager();
    s_initialized = true;
 
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "TextureLoom initialized");
    return true;
}
 
void TextureLoom::shutdown()
{
    if (!s_initialized) {
        return;
    }
 
    if (!m_backend) {
        return;
    }
 
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Shutting down TextureLoom...");
 
    for (auto& texture : m_textures) {
        if (texture && texture->is_initialized()) {
            m_resource_manager->cleanup_image(texture);
        }
    }
    m_textures.clear();
    m_sampler_cache.clear();
    m_resource_manager = nullptr;
    m_backend = nullptr;
 
    s_initialized = false;
 
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "TextureLoom shutdown complete");
}
 
//==============================================================================
// Texture Creation
//==============================================================================
 
std::shared_ptr<Core::VKImage> TextureLoom::create_2d(
    uint32_t width, uint32_t height,
    ImageFormat format, const void* data, uint32_t mip_levels)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    auto vk_format = to_vulkan_format(format);
    auto image = std::make_shared<Core::VKImage>(
        width, height, 1, vk_format,
        Core::VKImage::Usage::TEXTURE_2D,
        Core::VKImage::Type::TYPE_2D,
        mip_levels, 1,
        Kakshya::DataModality::IMAGE_COLOR);
 
    m_resource_manager->initialize_image(image);
 
    if (!image->is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Failed to initialize VKImage");
        return nullptr;
    }
 
    if (data) {
        size_t data_size = calculate_image_size(width, height, 1, format);
        upload_data(image, data, data_size);
    } else {
        m_resource_manager->transition_image_layout(
            image->get_image(),
            vk::ImageLayout::eUndefined,
            vk::ImageLayout::eShaderReadOnlyOptimal,
            mip_levels, 1, vk::ImageAspectFlagBits::eColor);
        image->set_current_layout(vk::ImageLayout::eShaderReadOnlyOptimal);
    }
 
    m_textures.push_back(image);
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Created 2D texture: {}x{}, format: {}, mips: {}",
        width, height, vk::to_string(vk_format), mip_levels);
    return image;
}
 
std::shared_ptr<Core::VKImage> TextureLoom::create_3d(
    uint32_t width, uint32_t height, uint32_t depth,
    ImageFormat format, const void* data)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    auto vk_format = to_vulkan_format(format);
    auto image = std::make_shared<Core::VKImage>(
        width, height, depth, vk_format,
        Core::VKImage::Usage::TEXTURE_2D,
        Core::VKImage::Type::TYPE_3D,
        1, 1, Kakshya::DataModality::VOLUMETRIC_3D);
 
    m_resource_manager->initialize_image(image);
 
    if (!image->is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Failed to initialize 3D VKImage");
        return nullptr;
    }
 
    if (data) {
        size_t data_size = calculate_image_size(width, height, depth, format);
        upload_data(image, data, data_size);
    } else {
        m_resource_manager->transition_image_layout(
            image->get_image(),
            vk::ImageLayout::eUndefined,
            vk::ImageLayout::eShaderReadOnlyOptimal,
            1, 1, vk::ImageAspectFlagBits::eColor);
        image->set_current_layout(vk::ImageLayout::eShaderReadOnlyOptimal);
    }
 
    m_textures.push_back(image);
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Created 3D texture: {}x{}x{}, format: {}",
        width, height, depth, vk::to_string(vk_format));
    return image;
}
 
std::shared_ptr<Core::VKImage> TextureLoom::create_cubemap(
    uint32_t size, ImageFormat format, const void* data)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    auto vk_format = to_vulkan_format(format);
    auto image = std::make_shared<Core::VKImage>(
        size, size, 1, vk_format,
        Core::VKImage::Usage::TEXTURE_2D,
        Core::VKImage::Type::TYPE_CUBE,
        1, 6, Kakshya::DataModality::IMAGE_COLOR);
 
    m_resource_manager->initialize_image(image);
 
    if (!image->is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Failed to initialize cubemap VKImage");
        return nullptr;
    }
 
    if (data) {
        size_t face_size = calculate_image_size(size, size, 1, format);
        size_t total_size = face_size * 6;
        upload_data(image, data, total_size);
    } else {
        m_resource_manager->transition_image_layout(
            image->get_image(),
            vk::ImageLayout::eUndefined,
            vk::ImageLayout::eShaderReadOnlyOptimal,
            1, 6, vk::ImageAspectFlagBits::eColor);
        image->set_current_layout(vk::ImageLayout::eShaderReadOnlyOptimal);
    }
 
    m_textures.push_back(image);
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Created cubemap: {}x{}, format: {}", size, size, vk::to_string(vk_format));
    return image;
}
 
std::shared_ptr<Core::VKImage> TextureLoom::create_2d_array(
    uint32_t width, uint32_t height, uint32_t layers,
    ImageFormat format, const void* data)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    if (layers == 0) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "create_2d_array: layers must be > 0");
        return nullptr;
    }
 
    auto vk_format = to_vulkan_format(format);
    auto image = std::make_shared<Core::VKImage>(
        width, height, 1, vk_format,
        Core::VKImage::Usage::TEXTURE_2D,
        Core::VKImage::Type::TYPE_2D,
        1, layers,
        Kakshya::DataModality::IMAGE_COLOR);
 
    m_resource_manager->initialize_image(image);
 
    if (!image->is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "create_2d_array: failed to initialize VKImage ({}x{} layers={})",
            width, height, layers);
        return nullptr;
    }
 
    if (data) {
        const size_t total = calculate_image_size(width, height, 1, format) * layers;
        upload_data(image, data, total);
    } else {
        m_resource_manager->transition_image_layout(
            image->get_image(),
            vk::ImageLayout::eUndefined,
            vk::ImageLayout::eShaderReadOnlyOptimal,
            1, layers, vk::ImageAspectFlagBits::eColor);
        image->set_current_layout(vk::ImageLayout::eShaderReadOnlyOptimal);
    }
 
    m_textures.push_back(image);
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Created 2D array texture: {}x{} layers={} format={}",
        width, height, layers, vk::to_string(vk_format));
    return image;
}
 
std::shared_ptr<Core::VKImage> TextureLoom::create_render_target(
    uint32_t width, uint32_t height, ImageFormat format)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    auto vk_format = to_vulkan_format(format);
    auto image = std::make_shared<Core::VKImage>(
        width, height, 1, vk_format,
        Core::VKImage::Usage::RENDER_TARGET,
        Core::VKImage::Type::TYPE_2D,
        1, 1, Kakshya::DataModality::IMAGE_COLOR);
 
    m_resource_manager->initialize_image(image);
 
    if (!image->is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Failed to initialize render target VKImage");
        return nullptr;
    }
 
    m_resource_manager->transition_image_layout(
        image->get_image(),
        vk::ImageLayout::eUndefined,
        vk::ImageLayout::eColorAttachmentOptimal,
        1, 1, vk::ImageAspectFlagBits::eColor);
    image->set_current_layout(vk::ImageLayout::eColorAttachmentOptimal);
 
    m_textures.push_back(image);
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Created render target: {}x{}, format: {}",
        width, height, vk::to_string(vk_format));
    return image;
}
 
std::shared_ptr<Core::VKImage> TextureLoom::create_depth_buffer(
    uint32_t width, uint32_t height, bool with_stencil)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    vk::Format vk_format = with_stencil
        ? vk::Format::eD24UnormS8Uint
        : vk::Format::eD32Sfloat;
 
    auto image = std::make_shared<Core::VKImage>(
        width, height, 1, vk_format,
        Core::VKImage::Usage::DEPTH_STENCIL,
        Core::VKImage::Type::TYPE_2D,
        1, 1, Kakshya::DataModality::IMAGE_2D);
 
    m_resource_manager->initialize_image(image);
 
    if (!image->is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Failed to initialize depth buffer VKImage");
        return nullptr;
    }
 
    vk::ImageAspectFlags aspect = with_stencil
        ? (vk::ImageAspectFlagBits::eDepth | vk::ImageAspectFlagBits::eStencil)
        : vk::ImageAspectFlagBits::eDepth;
 
    m_resource_manager->transition_image_layout(
        image->get_image(),
        vk::ImageLayout::eUndefined,
        vk::ImageLayout::eDepthStencilAttachmentOptimal,
        1, 1, aspect);
    image->set_current_layout(vk::ImageLayout::eDepthStencilAttachmentOptimal);
 
    m_textures.push_back(image);
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Created depth buffer: {}x{}, format: {}, stencil: {}",
        width, height, vk::to_string(vk_format), with_stencil);
    return image;
}
 
std::shared_ptr<Core::VKImage> TextureLoom::create_storage_image(
    uint32_t width, uint32_t height, ImageFormat format)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    auto vk_format = to_vulkan_format(format);
    auto image = std::make_shared<Core::VKImage>(
        width, height, 1, vk_format,
        Core::VKImage::Usage::STORAGE,
        Core::VKImage::Type::TYPE_2D,
        1, 1, Kakshya::DataModality::IMAGE_COLOR);
 
    m_resource_manager->initialize_image(image);
 
    if (!image->is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Failed to initialize storage image VKImage");
        return nullptr;
    }
 
    m_resource_manager->transition_image_layout(
        image->get_image(),
        vk::ImageLayout::eUndefined,
        vk::ImageLayout::eGeneral,
        1, 1, vk::ImageAspectFlagBits::eColor);
    image->set_current_layout(vk::ImageLayout::eGeneral);
 
    m_textures.push_back(image);
    MF_INFO(Journal::Component::Portal, Journal::Context::ImageProcessing,
        "Created storage image: {}x{}, format: {}",
        width, height, vk::to_string(vk_format));
    return image;
}
 
std::shared_ptr<Core::VKImage> TextureLoom::create_2d(
    const Kakshya::DataVariant& variant,
    uint32_t width,
    uint32_t height,
    ImageFormat format)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    const auto access = Kakshya::as_texture_access(variant);
    if (!access) {
        return nullptr;
    }
 
    const size_t expected = calculate_image_size(width, height, 1, format);
    if (access->byte_count != expected) {
        error<std::invalid_argument>(
            Journal::Component::Portal,
            Journal::Context::ImageProcessing,
            std::source_location::current(),
            "create_2d: byte count mismatch — {} bytes supplied, "
            "{}x{} format {} requires {}",
            access->byte_count, width, height, static_cast<int>(format), expected);
    }
 
    return create_2d(width, height, format, access->data_ptr, 1);
}
 
//==============================================================================
// Data Upload/Download
//==============================================================================
 
void TextureLoom::upload_data(
    const std::shared_ptr<Core::VKImage>& image, const void* data, size_t size)
{
    if (!is_initialized() || !image || !data) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Invalid parameters for upload_data");
        return;
    }
 
    m_resource_manager->upload_image_data(image, data, size);
}
 
void TextureLoom::upload_data(
    const std::shared_ptr<Core::VKImage>& image,
    const void* data,
    size_t size,
    const std::shared_ptr<Buffers::VKBuffer>& staging,
    bool deferred)
{
    if (!is_initialized() || !image || !data || !staging) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Invalid parameters for upload_data_streaming");
        return;
    }
 
    m_resource_manager->upload_image_data(image, data, size, staging, deferred);
}
 
void TextureLoom::download_data(
    const std::shared_ptr<Core::VKImage>& image,
    void* data,
    size_t size,
    const std::shared_ptr<Buffers::VKBuffer>& staging,
    bool deferred)
{
    if (!is_initialized() || !image || !data) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "download_data(staging): invalid parameters");
        return;
    }
 
    m_resource_manager->download_image_data(image, data, size, staging, deferred);
}
 
void TextureLoom::transition_layout(
    const std::shared_ptr<Core::VKImage>& image,
    vk::ImageLayout old_layout,
    vk::ImageLayout new_layout,
    uint32_t mip_levels,
    uint32_t array_layers,
    vk::ImageAspectFlags aspect_mask)
{
    if (!is_initialized() || !image) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "Invalid parameters for transition_vk_image_layout");
        return;
    }
 
    m_resource_manager->transition_image_layout(
        image->get_image(),
        old_layout,
        new_layout,
        mip_levels, array_layers, aspect_mask);
 
    image->set_current_layout(new_layout);
}
 
//==============================================================================
// Sampler Management
//==============================================================================
 
vk::Sampler TextureLoom::get_or_create_sampler(const SamplerConfig& config)
{
    if (!is_initialized()) {
        MF_ERROR(Journal::Component::Portal, Journal::Context::ImageProcessing,
            "TextureLoom not initialized");
        return nullptr;
    }
 
    size_t hash = hash_sampler_config(config);
    auto it = m_sampler_cache.find(hash);
    if (it != m_sampler_cache.end()) {
        return it->second;
    }
 
    vk::Sampler sampler = create_sampler(config);
    m_sampler_cache[hash] = sampler;
    return sampler;
}
 
vk::Sampler TextureLoom::get_default_sampler()
{
    SamplerConfig config;
    return get_or_create_sampler(config);
}
 
vk::Sampler TextureLoom::get_nearest_sampler()
{
    SamplerConfig config;
    config.mag_filter = FilterMode::NEAREST;
    config.min_filter = FilterMode::NEAREST;
    config.address_mode_u = AddressMode::CLAMP_TO_EDGE;
    config.address_mode_v = AddressMode::CLAMP_TO_EDGE;
    return get_or_create_sampler(config);
}
 
vk::Sampler TextureLoom::create_sampler(const SamplerConfig& config)
{
    return m_resource_manager->create_sampler(
        static_cast<vk::Filter>(config.mag_filter),
        static_cast<vk::SamplerAddressMode>(config.address_mode_u),
        config.max_anisotropy);
}
 
size_t TextureLoom::hash_sampler_config(const SamplerConfig& config)
{
    size_t hash = 0;
    hash ^= std::hash<int> {}(static_cast<int>(config.mag_filter)) << 0;
    hash ^= std::hash<int> {}(static_cast<int>(config.min_filter)) << 4;
    hash ^= std::hash<int> {}(static_cast<int>(config.address_mode_u)) << 8;
    hash ^= std::hash<int> {}(static_cast<int>(config.address_mode_v)) << 12;
    hash ^= std::hash<int> {}(static_cast<int>(config.address_mode_w)) << 16;
    hash ^= std::hash<float> {}(config.max_anisotropy) << 20;
    hash ^= std::hash<bool> {}(config.enable_mipmaps) << 24;
    return hash;
}
 
//==============================================================================
// Utilities
//==============================================================================
 
vk::Format TextureLoom::to_vulkan_format(ImageFormat format)
{
    switch (format) {
    case ImageFormat::R8:
        return vk::Format::eR8Unorm;
    case ImageFormat::RG8:
        return vk::Format::eR8G8Unorm;
    case ImageFormat::RGB8:
        return vk::Format::eR8G8B8Unorm;
    case ImageFormat::RGBA8:
        return vk::Format::eR8G8B8A8Unorm;
    case ImageFormat::RGBA8_SRGB:
    case ImageFormat::BGRA8:
        return vk::Format::eB8G8R8A8Unorm;
    case ImageFormat::BGRA8_SRGB:
        return vk::Format::eB8G8R8A8Srgb;
        return vk::Format::eR8G8B8A8Srgb;
    case ImageFormat::R16:
        return vk::Format::eR16Unorm;
    case ImageFormat::RG16:
        return vk::Format::eR16G16Unorm;
    case ImageFormat::RGBA16:
        return vk::Format::eR16G16B16A16Unorm;
    case ImageFormat::R16F:
        return vk::Format::eR16Sfloat;
    case ImageFormat::RG16F:
        return vk::Format::eR16G16Sfloat;
    case ImageFormat::RGBA16F:
        return vk::Format::eR16G16B16A16Sfloat;
    case ImageFormat::R32F:
        return vk::Format::eR32Sfloat;
    case ImageFormat::RG32F:
        return vk::Format::eR32G32Sfloat;
    case ImageFormat::RGBA32F:
        return vk::Format::eR32G32B32A32Sfloat;
    case ImageFormat::DEPTH16:
        return vk::Format::eD16Unorm;
    case ImageFormat::DEPTH24:
        return vk::Format::eX8D24UnormPack32;
    case ImageFormat::DEPTH32F:
        return vk::Format::eD32Sfloat;
    case ImageFormat::DEPTH24_STENCIL8:
        return vk::Format::eD24UnormS8Uint;
    default:
        return vk::Format::eR8G8B8A8Unorm;
    }
}
 
size_t TextureLoom::get_bytes_per_pixel(ImageFormat format)
{
    switch (format) {
    case ImageFormat::R8:
        return 1;
    case ImageFormat::RG8:
        return 2;
    case ImageFormat::RGB8:
        return 3;
    case ImageFormat::RGBA8:
    case ImageFormat::RGBA8_SRGB:
    case ImageFormat::BGRA8:
    case ImageFormat::BGRA8_SRGB:
        return 4;
    case ImageFormat::R16:
        return 2;
    case ImageFormat::RG16:
        return 4;
    case ImageFormat::RGBA16:
        return 8;
    case ImageFormat::R16F:
        return 2;
    case ImageFormat::RG16F:
        return 4;
    case ImageFormat::RGBA16F:
        return 8;
    case ImageFormat::R32F:
        return 4;
    case ImageFormat::RG32F:
        return 8;
    case ImageFormat::RGBA32F:
        return 16;
    case ImageFormat::DEPTH16:
        return 2;
    case ImageFormat::DEPTH24:
    case ImageFormat::DEPTH32F:
    case ImageFormat::DEPTH24_STENCIL8:
    default:
        return 4;
    }
}
 
std::optional<ImageFormat> TextureLoom::from_vulkan_format(vk::Format vk_format)
{
    switch (vk_format) {
    case vk::Format::eR8Unorm:
        return ImageFormat::R8;
    case vk::Format::eR8G8Unorm:
        return ImageFormat::RG8;
    case vk::Format::eR8G8B8Unorm:
        return ImageFormat::RGB8;
    case vk::Format::eR8G8B8A8Unorm:
        return ImageFormat::RGBA8;
    case vk::Format::eR8G8B8A8Srgb:
        return ImageFormat::RGBA8_SRGB;
    case vk::Format::eB8G8R8A8Unorm:
        return ImageFormat::BGRA8;
 
    case vk::Format::eR16Unorm:
        return ImageFormat::R16;
    case vk::Format::eR16G16Unorm:
        return ImageFormat::RG16;
    case vk::Format::eR16G16B16A16Unorm:
        return ImageFormat::RGBA16;
 
    case vk::Format::eR16Sfloat:
        return ImageFormat::R16F;
    case vk::Format::eR16G16Sfloat:
        return ImageFormat::RG16F;
    case vk::Format::eR16G16B16A16Sfloat:
        return ImageFormat::RGBA16F;
 
    case vk::Format::eR32Sfloat:
        return ImageFormat::R32F;
    case vk::Format::eR32G32Sfloat:
        return ImageFormat::RG32F;
    case vk::Format::eR32G32B32A32Sfloat:
        return ImageFormat::RGBA32F;
 
    case vk::Format::eD16Unorm:
        return ImageFormat::DEPTH16;
    case vk::Format::eX8D24UnormPack32:
        return ImageFormat::DEPTH24;
    case vk::Format::eD32Sfloat:
        return ImageFormat::DEPTH32F;
    case vk::Format::eD24UnormS8Uint:
        return ImageFormat::DEPTH24_STENCIL8;
 
    default:
        return std::nullopt;
    }
}
 
size_t TextureLoom::calculate_image_size(
    uint32_t width, uint32_t height, uint32_t depth, ImageFormat format)
{
    return static_cast<size_t>(width) * height * depth * get_bytes_per_pixel(format);
}
 
uint32_t TextureLoom::get_channel_count(ImageFormat format)
{
    switch (format) {
    case ImageFormat::R8:
    case ImageFormat::R16:
    case ImageFormat::R16F:
    case ImageFormat::R32F:
        return 1;
 
    case ImageFormat::RG8:
    case ImageFormat::RG16:
    case ImageFormat::RG16F:
    case ImageFormat::RG32F:
        return 2;
 
    case ImageFormat::RGB8:
        return 3;
 
    case ImageFormat::RGBA8:
    case ImageFormat::RGBA8_SRGB:
    case ImageFormat::BGRA8:
    case ImageFormat::RGBA16:
    case ImageFormat::RGBA16F:
    case ImageFormat::RGBA32F:
        return 4;
 
    case ImageFormat::DEPTH16:
    case ImageFormat::DEPTH24:
    case ImageFormat::DEPTH32F:
        return 1;
 
    case ImageFormat::DEPTH24_STENCIL8:
        return 2;
 
    default:
        return 0;
    }
}
 
} // namespace MayaFlux::Portal::Graphics