Rust-GPU面向 GPU 編程的 Rust

Rust-GPU 是面向 GPU 編程的開(kāi)源項(xiàng)目，目標(biāo)是使 Rust 成為 GPU 著色器開(kāi)發(fā)的“一等公民”編程語(yǔ)言和生態(tài)系統(tǒng)。

示例

use glam::{Vec3, Vec4, vec2, vec3};

#[spirv(fragment)]
pub fn main(
    #[spirv(frag_coord)] in_frag_coord: &Vec4,
    #[spirv(push_constant)] constants: &ShaderConstants,
    output: &mut Vec4,
) {
    let frag_coord = vec2(in_frag_coord.x, in_frag_coord.y);
    let mut uv = (frag_coord - 0.5 * vec2(constants.width as f32, constants.height as f32))
        / constants.height as f32;
    uv.y = -uv.y;

    let eye_pos = vec3(0.0, 0.0997, 0.2);
    let sun_pos = vec3(0.0, 75.0, -1000.0);
    let dir = get_ray_dir(uv, eye_pos, sun_pos);

    // evaluate Preetham sky model
    let color = sky(dir, sun_pos);

    *output = tonemap(color).extend(1.0)
}