cyborg/src/lib.rs

//! Cyborg is a high-performance, modern, experimental rendering engine written
//! in Rust.

use strum::IntoEnumIterator;

pub mod phase;
pub mod pass;

use pass::*;
use phase::*;

pub struct Renderer {
    pub render_passes: Vec<Box<dyn RenderPassBoxTrait>>,
}

impl Renderer {
    pub fn render(&mut self) {
        let frame_index = 0;

        let mut phase_passes = PhaseMultiMap::<usize>::default();

        let mut phases_buf = PhaseList::default();
        for (pass_index, rp) in self.render_passes.iter_mut().enumerate() {
            phases_buf.clear();
            rp.begin_frame(frame_index, &mut phases_buf);
            phase_passes.insert_multi(&phases_buf, pass_index);
        }

        for phase in PrePhase::iter() {
            for pass_index in phase_passes.iter_pre(&phase) {
                let pass = &self.render_passes[*pass_index];
                let mut encoder = gpu::RenderBundleEncoder;
                pass.render_pre(phase, frame_index, &mut encoder);
            }
        }

        let viewport = ViewportData;

        for phase in ViewportPhase::iter() {
            for pass_index in phase_passes.iter_viewport(&phase) {
                let pass = &self.render_passes[*pass_index];
                let mut encoder = gpu::RenderBundleEncoder;
                pass.render_viewport(phase, frame_index, &viewport, &mut encoder);
            }
        }
    }
}

/// Mock GPU API (like Vulkan, WebGPU, or OpenGL) types for prototyping.
pub mod gpu {
    /// Thread-safe GPU command recorder that's later executed in a command buffer.
    ///
    /// Also known as a:
    /// - RenderBundleEncoder in WebGPU
    /// - secondary command buffer in Vulkan
    pub struct RenderBundleEncoder;
}