143 lines
4.1 KiB
Rust
143 lines
4.1 KiB
Rust
//! Cyborg is a high-performance, modern, experimental rendering engine written
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//! in Rust.
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use std::sync::{Arc, RwLock};
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use strum::IntoEnumIterator;
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pub mod phase;
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use phase::*;
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pub struct ViewportData;
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pub trait FrameData {}
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pub trait RenderPass {
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type FrameData: FrameData;
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fn create_frame_data(&mut self) -> Self::FrameData;
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fn begin_frame(&mut self, data: &mut Self::FrameData, phases: &mut PhaseList);
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fn render_pre(
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&self,
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phase: PrePhase,
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data: &Self::FrameData,
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cmds: &mut gpu::RenderBundleEncoder,
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);
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fn render_viewport(
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&self,
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phase: ViewportPhase,
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data: &Self::FrameData,
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viewport: &ViewportData,
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cmds: &mut gpu::RenderBundleEncoder,
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);
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}
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pub struct Renderer {
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pub render_passes: Vec<Box<dyn RenderPassBoxTrait>>,
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}
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impl Renderer {
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pub fn render(&mut self) {
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let frame_index = 0;
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let mut phase_passes = PhaseMultiMap::<usize>::default();
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let mut phases_buf = PhaseList::default();
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for (pass_index, rp) in self.render_passes.iter_mut().enumerate() {
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phases_buf.clear();
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rp.begin_frame(frame_index, &mut phases_buf);
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phase_passes.insert_multi(&phases_buf, pass_index);
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}
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for phase in PrePhase::iter() {
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for pass_index in phase_passes.iter_pre(&phase) {
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let pass = &self.render_passes[*pass_index];
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let mut encoder = gpu::RenderBundleEncoder;
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pass.render_pre(phase, frame_index, &mut encoder);
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}
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}
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let viewport = ViewportData;
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for phase in ViewportPhase::iter() {
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for pass_index in phase_passes.iter_viewport(&phase) {
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let pass = &self.render_passes[*pass_index];
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let mut encoder = gpu::RenderBundleEncoder;
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pass.render_viewport(phase, frame_index, &viewport, &mut encoder);
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}
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}
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}
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}
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pub trait RenderPassBoxTrait {
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fn begin_frame(&mut self, data_index: usize, phases: &mut PhaseList);
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fn render_pre(&self, phase: PrePhase, data_index: usize, cmds: &mut gpu::RenderBundleEncoder);
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fn render_viewport(
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&self,
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phase: ViewportPhase,
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data_index: usize,
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viewport: &ViewportData,
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cmds: &mut gpu::RenderBundleEncoder,
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);
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}
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pub struct RenderPassBox<T: RenderPass> {
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render_pass: Arc<RwLock<T>>,
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frame_data: Vec<T::FrameData>,
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}
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impl<T: RenderPass> RenderPassBox<T> {
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pub fn new(render_pass: Arc<RwLock<T>>, frame_num: usize) -> Self {
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let frame_data = {
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let mut lock = render_pass.write().unwrap();
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(0..frame_num).map(|_| lock.create_frame_data()).collect()
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};
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Self {
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render_pass,
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frame_data,
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}
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}
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}
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impl<T: RenderPass> RenderPassBoxTrait for RenderPassBox<T> {
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fn begin_frame(&mut self, data_index: usize, phases: &mut PhaseList) {
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let frame_data = &mut self.frame_data[data_index];
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let mut render_pass = self.render_pass.write().unwrap();
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render_pass.begin_frame(frame_data, phases)
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}
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fn render_pre(&self, phase: PrePhase, data_index: usize, cmds: &mut gpu::RenderBundleEncoder) {
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let frame_data = &self.frame_data[data_index];
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let render_pass = self.render_pass.read().unwrap();
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render_pass.render_pre(phase, frame_data, cmds)
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}
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fn render_viewport(
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&self,
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phase: ViewportPhase,
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data_index: usize,
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viewport: &ViewportData,
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cmds: &mut gpu::RenderBundleEncoder,
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) {
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let frame_data = &self.frame_data[data_index];
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let render_pass = self.render_pass.read().unwrap();
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render_pass.render_viewport(phase, frame_data, viewport, cmds)
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}
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}
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/// Mock GPU API (like Vulkan, WebGPU, or OpenGL) types for prototyping.
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pub mod gpu {
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/// Thread-safe GPU command recorder that's later executed in a command buffer.
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///
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/// Also known as a:
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/// - RenderBundleEncoder in WebGPU
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/// - secondary command buffer in Vulkan
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pub struct RenderBundleEncoder;
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}
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