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use cuneus::prelude::ComputeShader;
use cuneus::{Core, RenderKit, ShaderApp, ShaderManager};
use cuneus::WindowEvent;
cuneus::uniform_params! {
struct ShaderParams {
lambda: f32,
theta: f32,
alpha: f32,
sigma: f32,
gamma: f32,
blue: f32,
a: f32,
b: f32,
base_color_r: f32,
base_color_g: f32,
base_color_b: f32,
accent_color_r: f32,
accent_color_g: f32,
accent_color_b: f32,
background_r: f32,
background_g: f32,
background_b: f32,
gamma_correction: f32,
aces_tonemapping: f32,
_padding: f32}
}
struct Shader {
base: RenderKit,
compute_shader: ComputeShader,
current_params: ShaderParams}
fn main() -> Result<(), Box<dyn std::error::Error>> {
env_logger::init();
let (app, event_loop) = ShaderApp::new("sdvert", 800, 600);
app.run(event_loop, Shader::init)
}
impl ShaderManager for Shader {
fn init(core: &Core) -> Self {
// Create texture display layout
let base = RenderKit::new(core);
let initial_params = ShaderParams {
sigma: 0.07,
gamma: 1.5,
blue: 1.0,
a: 2.0,
b: 0.5,
lambda: 3.0,
theta: 2.0,
alpha: 0.3,
base_color_r: 1.0,
base_color_g: 1.0,
base_color_b: 1.0,
accent_color_r: 1.0,
accent_color_g: 1.0,
accent_color_b: 1.0,
background_r: 0.6,
background_g: 0.9,
background_b: 0.9,
gamma_correction: 0.41,
aces_tonemapping: 0.4,
_padding: 0.0};
let config = ComputeShader::builder()
.with_entry_point("main")
.with_custom_uniforms::<ShaderParams>()
.build();
let compute_shader = cuneus::compute_shader!(core, "shaders/sdvert.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) {
// Update time
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);
// Handle export
self.compute_shader.handle_export(core, &mut self.base);
}
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 full_output = if self.base.key_handler.show_ui {
self.base.render_ui(core, |ctx| {
RenderKit::apply_default_style(ctx);
egui::Window::new("SDVert Controls")
.collapsible(true)
.resizable(true)
.default_width(300.0)
.show(ctx, |ui| {
egui::CollapsingHeader::new("Geometry")
.default_open(false)
.show(ui, |ui| {
changed |= ui
.add(
egui::Slider::new(&mut params.lambda, 1.0..=20.0)
.text("Vertices"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.theta, 0.0..=10.0)
.text("Angle Scale"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.gamma, 0.1..=3.0)
.text("Layer Size"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.alpha, 0.001..=0.5)
.text("Layer Min"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.sigma, 0.01..=0.5)
.text("Layer Max"),
)
.changed();
});
egui::CollapsingHeader::new("Shape Parameters")
.default_open(false)
.show(ui, |ui| {
changed |= ui
.add(
egui::Slider::new(&mut params.a, 0.0..=5.0)
.text("Depth Factor"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.b, 0.0..=5.0)
.text("Fold Pattern"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.blue, 0.0..=5.0)
.text("Hue Shift"),
)
.changed();
});
egui::CollapsingHeader::new("Colors")
.default_open(false)
.show(ui, |ui| {
ui.horizontal(|ui| {
ui.label("Base:");
let mut base_color = [
params.base_color_r,
params.base_color_g,
params.base_color_b,
];
if ui.color_edit_button_rgb(&mut base_color).changed() {
params.base_color_r = base_color[0];
params.base_color_g = base_color[1];
params.base_color_b = base_color[2];
changed = true;
}
});
ui.horizontal(|ui| {
ui.label("Accent:");
let mut accent_color = [
params.accent_color_r,
params.accent_color_g,
params.accent_color_b,
];
if ui.color_edit_button_rgb(&mut accent_color).changed() {
params.accent_color_r = accent_color[0];
params.accent_color_g = accent_color[1];
params.accent_color_b = accent_color[2];
changed = true;
}
});
ui.horizontal(|ui| {
ui.label("Background:");
let mut bg_color = [
params.background_r,
params.background_g,
params.background_b,
];
if ui.color_edit_button_rgb(&mut bg_color).changed() {
params.background_r = bg_color[0];
params.background_g = bg_color[1];
params.background_b = bg_color[2];
changed = true;
}
});
});
egui::CollapsingHeader::new("Post-Processing")
.default_open(false)
.show(ui, |ui| {
changed |= ui
.add(
egui::Slider::new(&mut params.gamma_correction, 0.1..=3.0)
.text("Gamma Correction"),
)
.changed();
changed |= ui
.add(
egui::Slider::new(&mut params.aces_tonemapping, 0.0..=2.0)
.text("ACES Tonemapping"),
)
.changed();
});
ui.separator();
cuneus::ShaderControls::render_controls_widget(ui, &mut controls_request);
ui.separator();
should_start_export =
cuneus::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_control_request(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();
}
// Create command encoder
// Update time uniform
let current_time = self.base.controls.get_time(&self.base.start_time);
let delta_time = 1.0 / 60.0;
self.compute_shader
.set_time(current_time, delta_time, &core.queue);
// Dispatch compute shader
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)
}
}