skia-canvas 0.1.0

GPU-accelerated, multi-threaded HTML Canvas-compatible 2D rendering for Rust and Node, powered by Skia.
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use skia_safe::{ColorType, gpu::vk};
use vulkano::format::Format as VkFormat;

pub mod engine;

#[cfg(feature = "window")]
pub mod renderer;

static VK_FORMATS: &[VkFormat] = &[
    VkFormat::R8G8B8A8_UNORM,
    VkFormat::R8G8B8A8_SRGB,
    VkFormat::R8_UNORM,
    VkFormat::B8G8R8A8_UNORM,
    VkFormat::R5G6B5_UNORM_PACK16,
    VkFormat::B5G6R5_UNORM_PACK16,
    VkFormat::R16G16B16A16_SFLOAT,
    VkFormat::R16_SFLOAT,
    VkFormat::R8G8B8_UNORM,
    VkFormat::R8G8_UNORM,
    VkFormat::A2B10G10R10_UNORM_PACK32,
    VkFormat::A2R10G10B10_UNORM_PACK32,
    VkFormat::R10X6G10X6B10X6A10X6_UNORM_4PACK16,
    VkFormat::B4G4R4A4_UNORM_PACK16,
    VkFormat::R4G4B4A4_UNORM_PACK16,
    VkFormat::R16_UNORM,
    VkFormat::R16G16_UNORM,
    VkFormat::G8_B8_R8_3PLANE_420_UNORM,
    VkFormat::G8_B8R8_2PLANE_420_UNORM,
    VkFormat::G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16,
    VkFormat::R16G16B16A16_UNORM,
    VkFormat::R16G16_SFLOAT,
];

fn to_sk_format(vulkano_format: &VkFormat) -> Option<(vk::Format, ColorType)> {
    // Format / ColorType pairs
    // https://github.com/google/skia/blob/4f24819404272433687a76e407bcd7877384f512/src/gpu/ganesh/vk/GrVkCaps.cpp#L880
    //
    // GrColorType -> SkColorType mappings
    // https://github.com/google/skia/blob/4f24819404272433687a76e407bcd7877384f512/include/private/gpu/ganesh/GrTypesPriv.h#L590
    //
    // Present in the GrVkCaps 'supported' list but lacking supported
    // GrColorTypes so omitted:
    // - VkFormat::ETC2_R8G8B8_UNORM_BLOCK
    // - VkFormat::BC1_RGB_UNORM_BLOCK
    // - VkFormat::BC1_RGBA_UNORM_BLOCK
    match vulkano_format {
        VkFormat::R8G8B8A8_UNORM => Some((vk::Format::R8G8B8A8_UNORM, ColorType::RGBA8888)),
        VkFormat::R8G8B8A8_SRGB => Some((vk::Format::R8G8B8A8_SRGB, ColorType::SRGBA8888)),
        VkFormat::R8_UNORM => Some((vk::Format::R8_UNORM, ColorType::R8UNorm)),
        VkFormat::B8G8R8A8_UNORM => Some((vk::Format::B8G8R8A8_UNORM, ColorType::BGRA8888)),
        VkFormat::R5G6B5_UNORM_PACK16 => Some((vk::Format::R5G6B5_UNORM_PACK16, ColorType::RGB565)),
        VkFormat::B5G6R5_UNORM_PACK16 => Some((vk::Format::B5G6R5_UNORM_PACK16, ColorType::RGB565)),
        VkFormat::R16G16B16A16_SFLOAT => {
            Some((vk::Format::R16G16B16A16_SFLOAT, ColorType::RGBAF16))
        }
        VkFormat::R16_SFLOAT => Some((vk::Format::R16_SFLOAT, ColorType::A16Float)),
        VkFormat::R8G8B8_UNORM => Some((vk::Format::R8G8B8_UNORM, ColorType::RGB888x)),
        VkFormat::R8G8_UNORM => Some((vk::Format::R8G8_UNORM, ColorType::R8G8UNorm)),
        VkFormat::A2B10G10R10_UNORM_PACK32 => {
            Some((vk::Format::A2B10G10R10_UNORM_PACK32, ColorType::RGBA1010102))
        }
        VkFormat::A2R10G10B10_UNORM_PACK32 => {
            Some((vk::Format::A2R10G10B10_UNORM_PACK32, ColorType::BGRA1010102))
        }
        VkFormat::R10X6G10X6B10X6A10X6_UNORM_4PACK16 => Some((
            vk::Format::R10X6G10X6B10X6A10X6_UNORM_4PACK16,
            ColorType::RGBA10x6,
        )),
        VkFormat::B4G4R4A4_UNORM_PACK16 => {
            Some((vk::Format::B4G4R4A4_UNORM_PACK16, ColorType::ARGB4444))
        }
        VkFormat::R4G4B4A4_UNORM_PACK16 => {
            Some((vk::Format::R4G4B4A4_UNORM_PACK16, ColorType::ARGB4444))
        }
        VkFormat::R16_UNORM => Some((vk::Format::R16_UNORM, ColorType::A16UNorm)),
        VkFormat::R16G16_UNORM => Some((vk::Format::R16G16_UNORM, ColorType::R16G16UNorm)),
        VkFormat::G8_B8_R8_3PLANE_420_UNORM => {
            Some((vk::Format::G8_B8_R8_3PLANE_420_UNORM, ColorType::RGB888x))
        }
        VkFormat::G8_B8R8_2PLANE_420_UNORM => {
            Some((vk::Format::G8_B8R8_2PLANE_420_UNORM, ColorType::RGB888x))
        }
        VkFormat::G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16 => Some((
            vk::Format::G10X6_B10X6R10X6_2PLANE_420_UNORM_3PACK16,
            ColorType::RGBA1010102,
        )),
        VkFormat::R16G16B16A16_UNORM => {
            Some((vk::Format::R16G16B16A16_UNORM, ColorType::R16G16B16A16UNorm))
        }
        VkFormat::R16G16_SFLOAT => Some((vk::Format::R16G16_SFLOAT, ColorType::R16G16Float)),
        _ => None,
    }
}