use cuneus::prelude::ComputeShader;
use cuneus::{
Core, ExportManager, RenderKit, ShaderApp, ShaderControls, ShaderManager,
};
use cuneus::WindowEvent;
cuneus::uniform_params! {
struct ShaderParams {
red_power: f32,
green_power: f32,
blue_power: f32,
green_boost: f32,
contrast: f32,
gamma: f32,
glow: f32,
_pad_m: f32,
}
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
cuneus::gst::init()?;
env_logger::init();
let (app, event_loop) = ShaderApp::new("matrix", 800, 600);
app.run(event_loop, MatrixShader::init)
}
struct MatrixShader {
base: RenderKit,
compute_shader: ComputeShader,
current_params: ShaderParams,
}
impl ShaderManager for MatrixShader {
fn init(core: &Core) -> Self {
let base = RenderKit::new(core);
let initial_params = ShaderParams {
red_power: 0.98,
green_power: 0.85,
blue_power: 0.90,
green_boost: 1.62,
contrast: 1.0,
gamma: 1.0,
glow: 0.05,
_pad_m: 0.0,
};
let config = ComputeShader::builder()
.with_entry_point("main")
.with_input_texture()
.with_custom_uniforms::<ShaderParams>()
.build();
let compute_shader = cuneus::compute_shader!(core, "shaders/matrix.wgsl", config);
compute_shader.set_custom_params(initial_params, &core.queue);
Self {
base,
compute_shader,
current_params: initial_params,
}
}
fn update(&mut self, core: &Core) {
let current_time = self.base.controls.get_time(&self.base.start_time);
let delta = 1.0 / 60.0;
self.compute_shader
.set_time(current_time, delta, &core.queue);
self.base.update_current_texture(core, &core.queue);
if let Some(texture_manager) = self.base.get_current_texture_manager() {
self.compute_shader.update_input_texture(
&texture_manager.view,
&texture_manager.sampler,
&core.device,
);
}
}
fn render(&mut self, core: &Core) -> Result<(), cuneus::SurfaceError> {
let mut frame = self.base.begin_frame(core)?;
let mut params = self.current_params;
let mut changed = false;
let mut should_start_export = false;
let mut export_request = self.base.export_manager.get_ui_request();
let mut controls_request = self
.base
.controls
.get_ui_request(&self.base.start_time, &core.size, self.base.fps_tracker.fps());
let using_video_texture = self.base.using_video_texture;
let using_hdri_texture = self.base.using_hdri_texture;
let using_webcam_texture = self.base.using_webcam_texture;
let video_info = self.base.get_video_info();
let hdri_info = self.base.get_hdri_info();
let webcam_info = self.base.get_webcam_info();
let full_output = if self.base.key_handler.show_ui {
self.base.render_ui(core, |ctx| {
RenderKit::apply_default_style(ctx);
egui::Window::new("Matrix Effect")
.collapsible(true)
.resizable(true)
.default_size([300.0, 100.0])
.show(ctx, |ui| {
ui.collapsing("Media", |ui: &mut egui::Ui| {
ShaderControls::render_media_panel(
ui,
&mut controls_request,
using_video_texture,
video_info,
using_hdri_texture,
hdri_info,
using_webcam_texture,
webcam_info,
);
});
ui.separator();
ui.collapsing("Matrix Color Settings", |ui| {
changed |= ui
.add(
egui::Slider::new(&mut params.red_power, 0.5..=3.0)
.text("Red Power"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.green_power, 0.5..=3.0)
.text("Green Power"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.blue_power, 0.5..=3.0)
.text("Blue Power"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.green_boost, 0.5..=2.0)
.text("Green Boost"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.contrast, 0.5..=2.0)
.text("Contrast"),
)
.changed();
changed |= ui
.add(egui::Slider::new(&mut params.gamma, 0.2..=2.0).text("Gamma"))
.changed();
changed |= ui
.add(egui::Slider::new(&mut params.glow, -1.0..=1.0).text("Glow"))
.changed();
});
ui.separator();
ShaderControls::render_controls_widget(ui, &mut controls_request);
ui.separator();
should_start_export =
ExportManager::render_export_ui_widget(ui, &mut export_request);
});
})
} else {
self.base.render_ui(core, |_ctx| {})
};
self.base.export_manager.apply_ui_request(export_request);
self.base.apply_media_requests(core, &controls_request);
if changed {
self.current_params = params;
self.compute_shader.set_custom_params(params, &core.queue);
}
if should_start_export {
self.base.export_manager.start_export();
}
self.compute_shader.dispatch(&mut frame.encoder, core);
self.base.renderer.render_to_view(&mut frame.encoder, &frame.view, &self.compute_shader.get_output_texture().bind_group);
self.base.end_frame(core, frame, full_output);
Ok(())
}
fn resize(&mut self, core: &Core) {
self.base.default_resize(core, &mut self.compute_shader);
}
fn handle_input(&mut self, core: &Core, event: &WindowEvent) -> bool {
self.base.default_handle_input(core, event)
}
}