143 lines
4.4 KiB
Rust
143 lines
4.4 KiB
Rust
use std::sync::{
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mpsc::{Receiver, Sender},
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Arc,
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};
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use rand::{rngs::SmallRng, SeedableRng};
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use ray_tracing_core::{
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camera::BasicCamera, prelude::*, renderer::ClassicalRenderer, scene::Scene,
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};
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use ray_tracing_renderer::{
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depth_renderer::DepthRenderer, mis::MIS, next_event_estimation::NextEventEstimation,
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path_tracer::PathTracer, path_tracer_importance::PathTracerImportance,
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};
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use ray_tracing_scene::examples;
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use rayon::{
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iter::{IndexedParallelIterator, ParallelIterator},
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slice::ParallelSliceMut,
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};
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use vulkano::{
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buffer::{Buffer, BufferCreateInfo, BufferUsage, Subbuffer},
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memory::allocator::{AllocationCreateInfo, MemoryAllocator, MemoryTypeFilter},
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};
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type DynRenderer =
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dyn ClassicalRenderer<SmallRng, Box<dyn Scene<SmallRng> + Sync>, BasicCamera> + Sync;
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pub const RENDERER: [(&str, fn(u32, u32) -> Box<DynRenderer>); 5] = [
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("Depth", |w, h| {
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Box::new(DepthRenderer::new(w, h)) as Box<DynRenderer>
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}),
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("Path tracer", |w, h| {
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Box::new(PathTracer::new(w, h)) as Box<DynRenderer>
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}),
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("Path tracer importance", |w, h| {
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Box::new(PathTracerImportance::new(w, h)) as Box<DynRenderer>
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}),
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("Next event estimation", |w, h| {
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Box::new(NextEventEstimation::new(w, h)) as Box<DynRenderer>
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}),
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("MIS", |w, h| Box::new(MIS::new(w, h)) as Box<DynRenderer>),
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];
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#[derive(Debug, Clone)]
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pub struct RenderSettings {
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pub width: u32,
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pub height: u32,
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pub scene: &'static str,
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pub renderer_id: usize,
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pub camera_pos: Pos3,
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pub camera_look_at: Pos3,
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pub camera_up: Dir3,
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pub camera_horizontal_fov: Float,
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}
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pub struct Data {
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pub width: u32,
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pub height: u32,
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pub samples: u32,
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pub buffer: Subbuffer<[f32]>,
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}
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pub fn render_thread(
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s: RenderSettings,
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rx: Receiver<RenderSettings>,
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tx: Sender<Data>,
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allocator: Arc<impl MemoryAllocator>,
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) {
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let mut settings = s;
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let mut buffer = vec![0.0; settings.width as usize * settings.height as usize * 3];
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let example_scenes = examples::example_scenes::<SmallRng>();
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let mut scene = example_scenes[settings.scene].get_scene();
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let mut camera = BasicCamera::from_look_at(
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settings.width,
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settings.height,
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settings.camera_pos,
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settings.camera_look_at,
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settings.camera_up,
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settings.camera_horizontal_fov,
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);
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let mut renderer = (RENDERER[settings.renderer_id].1)(settings.width, settings.height);
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let mut samples = 0;
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loop {
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while let Ok(s) = rx.try_recv() {
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println!("Settings changed.");
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settings = s;
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scene = example_scenes[settings.scene].get_scene();
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camera = BasicCamera::from_look_at(
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settings.width,
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settings.height,
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settings.camera_pos,
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settings.camera_look_at,
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settings.camera_up,
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settings.camera_horizontal_fov,
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);
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buffer = vec![0.0; settings.width as usize * settings.height as usize * 3];
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renderer = (RENDERER[settings.renderer_id].1)(settings.width, settings.height);
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samples = 0;
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}
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buffer.par_chunks_mut(3).enumerate().for_each(|(i, c)| {
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let x = (i % settings.width as usize) as u32;
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let y = (i / settings.width as usize) as u32;
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let mut rng = SmallRng::seed_from_u64(
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(x + y * settings.width) as u64
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+ (settings.width as u64 * settings.height as u64 * samples as u64),
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);
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let r = renderer.render_pixel(&scene, &camera, x, y, &mut rng);
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c[0] += r.r();
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c[1] += r.g();
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c[2] += r.b();
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});
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samples += 1;
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let data = Data {
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width: settings.width,
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height: settings.height,
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samples,
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buffer: Buffer::from_iter(
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allocator.clone(),
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BufferCreateInfo {
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usage: BufferUsage::STORAGE_BUFFER,
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..Default::default()
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},
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AllocationCreateInfo {
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memory_type_filter: MemoryTypeFilter::PREFER_DEVICE
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| MemoryTypeFilter::HOST_SEQUENTIAL_WRITE,
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..Default::default()
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},
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buffer.iter().copied(),
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)
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.unwrap(),
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};
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let _ = tx.send(data);
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}
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}
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