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https://github.com/keiya01/threerender
A simple 3D rendering engine
https://github.com/keiya01/threerender
Last synced: 28 days ago
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A simple 3D rendering engine
- Host: GitHub
- URL: https://github.com/keiya01/threerender
- Owner: keiya01
- License: mit
- Created: 2022-12-31T01:20:02.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2023-06-25T05:08:37.000Z (over 1 year ago)
- Last Synced: 2024-08-10T19:16:25.304Z (3 months ago)
- Language: Rust
- Size: 14.6 MB
- Stars: 12
- Watchers: 2
- Forks: 0
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# threerender
**CAUTION: Currently, this is POC, and in development, so not production ready.**
**If you interest this project, you can see [examples dir](/examples)**
## Overview
threerender is a simple 3D rendering engine.
It will target providing feature of fundamental for 3D development.
It is similar to Three.js, but this will be more extensible and work on multiple platforms.
## Usage
You can use this library as follow.
```rust
use std::rc::Rc;
use threerender::color::rgb::RGBA;
use threerender::math::{Quat, Transform, Vec3};
use threerender::mesh::{Sphere, Square};
use threerender::renderer::Renderer;
use threerender::traits::entity::EntityDescriptor;
use threerender::{CameraStyle, LightBaseStyle, LightStyle, RendererBuilder, HemisphereLightStyle};
fn main() {
let (width, height) = (2000, 1500);
let mut renderer_builder = RendererBuilder::new();
renderer_builder.set_width(width);
renderer_builder.set_height(height);
renderer_builder.set_background(RGBA::new(0, 0, 0, 1));
renderer_builder.set_camera(CameraStyle {
width: width as f32,
height: height as f32,
..Default::default()
});
renderer_builder.add_light(LightStyle::with_directional(
"directional".to_owned(),
LightBaseStyle::default(),
None,
));
renderer_builder.add_light(LightStyle::with_hemisphere(
"hemisphere".to_owned(),
HemisphereLightStyle::default(),
Vec3::new(0., 50., 0.),
));
let sphere = Rc::new(Sphere::new(50, 50, None));
renderer_builder.push(EntityDescriptor {
id: "sphere".to_owned(),
mesh: Some(sphere),
fill_color: RGBA::new(255, 255, 255, 255),
transform: Transform::from_translation_rotation_scale(
Vec3::ZERO,
Quat::default(),
Vec3::ONE,
),
state: Default::default(),
reflection: Default::default(),
children: vec![],
..Default::default()
});
let square = Rc::new(Square::new(None));
renderer_builder.push(EntityDescriptor {
id: "square1".to_owned(),
mesh: Some(square.clone()),
fill_color: RGBA::new(0, 255, 0, 255),
transform: Transform::from_translation_rotation_scale(
Vec3::new(0., 0., -3.),
Quat::default(),
Vec3::ONE,
),
state: Default::default(),
reflection: Default::default(),
children: vec![],
..Default::default()
});
renderer_builder.push(EntityDescriptor {
id: "square2".to_owned(),
mesh: Some(square),
fill_color: RGBA::new(255, 0, 0, 255),
transform: Transform::from_translation_rotation_scale(
Vec3::new(-3., 0., -1.),
Quat::default(),
Vec3::ONE,
),
state: Default::default(),
reflection: Default::default(),
children: vec![],
..Default::default()
});
let event_loop = winit::event_loop::EventLoop::new();
let window = winit::window::Window::new(&event_loop).unwrap();
window.set_inner_size(winit::dpi::PhysicalSize::new(
renderer_builder.width(),
renderer_builder.height(),
));
let mut renderer = Renderer::new(&window, renderer_builder);
event_loop.run(move |event, _target, control_flow| {
match event {
winit::event::Event::WindowEvent {
event: winit::event::WindowEvent::Resized(size),
..
} => {
renderer.resize(size.width, size.height);
// For macos
window.request_redraw();
}
winit::event::Event::WindowEvent {
event: winit::event::WindowEvent::CloseRequested,
..
} => *control_flow = winit::event_loop::ControlFlow::Exit,
winit::event::Event::RedrawRequested(_) => {
renderer.render();
}
_ => {},
}
});
}
```
## Examples
You can try this project by [examples](/examples).
You can run these examples by below command.
```sh
cargo run -p examples_{PROJECT_NAME}
```
## Road map
- [x] 3D entities
- [x] Square
- [x] 2D texture rendering
- [x] Sphere
- [x] 2D texture rendering
- [x] 2D entities
- [x] Lines
- [x] Plane
- [x] 2D texture rendering
- [x] Triangle
- [x] Camera
- [ ] Light
- [x] Directional light
- [ ] Spot light
- [ ] Point light
- [x] Hemisphere light
- [ ] Shadow
- [x] Directional shadow
- [x] Opacity
- [x] Soft shadow(PCSS)
- [ ] Point light shadow
- [ ] Spot light shadow
- [x] Multi light/shadow
- [x] Reflection rate for entity
- [x] 2D texture
- [x] Override shader
- [ ] glTF support
- [x] Basic glTF support
- [ ] Animation
- [ ] PBR
- [x] Normal mapping
- [x] Model transparency
- [ ] Extensible window system
- [ ] Extendable shader by user
- [ ] Custom render process by implementing trait
- [ ] Shadow rendering
- [ ] Ray tracing
- [ ] Performance improvement
- [ ] Multiple render target
- https://threejs.org/docs/#api/en/renderers/WebGLMultipleRenderTargets
- User can customize own renderer like the deferred rendering
- https://github.com/mrdoob/three.js/issues/5180
- https://github.com/mrdoob/three.js/issues/2624
- [ ] dirty check
- [ ] Optimize multi object like cloning object and transfer vertex more efficiently
- [ ] Mip map for texture
- Provide some functionality to be able to define mip map.
- [ ] multi threading
- [ ] Optimize image loading. Eg. We should not draw image if image is not visible.
- [ ] Level of details for polygon(LOD)
- [ ] Font
- [ ] Integration with 2D library like egui
- [ ] Web support / Deno support(native binding)
- [ ] Convenient Math API for 3D development