use cuneus::compute::*;
use cuneus::prelude::*;
cuneus::uniform_params! {
struct RorschachParams {
seed: f32,
zoom: f32,
threshold: f32,
distortion: f32,
particle_speed: f32,
particle_life: f32,
trace_steps: f32,
contrast: f32,
color_r: f32,
color_g: f32,
color_b: f32,
gamma: f32,
style: f32,
fbm_octaves: f32,
tint_x: f32,
tint_y: f32,
tint_z: f32,
_pad_final1: f32,
_pad_final2: f32,
_pad_final3: f32}
}
struct RorschachShader {
base: RenderKit,
compute_shader: ComputeShader,
current_params: RorschachParams}
impl ShaderManager for RorschachShader {
fn init(core: &Core) -> Self {
let initial_params = RorschachParams {
seed: 87.0,
zoom: 5.2,
threshold: 0.383,
distortion: 2.63,
particle_speed: 0.45,
particle_life: 0.99,
trace_steps: 22.0,
contrast: 6.0,
color_r: 0.58,
color_g: 0.12,
color_b: 0.12,
gamma: 0.2,
style: 1.0,
fbm_octaves: 5.0,
tint_x: 0.3,
tint_y: 0.04,
tint_z: 0.28,
_pad_final1: 0.0,
_pad_final2: 0.0,
_pad_final3: 0.0};
let base = RenderKit::new(core);
let passes = vec![
PassDescription::new("shape", &[]),
PassDescription::new("flow_field", &["shape"]),
PassDescription::new("ink_trace", &["ink_trace", "flow_field"]),
PassDescription::new("main_image", &["ink_trace"]),
];
let config = ComputeShader::builder()
.with_entry_point("shape")
.with_multi_pass(&passes)
.with_custom_uniforms::<RorschachParams>()
.with_workgroup_size([16, 16, 1])
.with_texture_format(COMPUTE_TEXTURE_FORMAT_RGBA16)
.with_label("Rorschach Unified")
.build();
let compute_shader = cuneus::compute_shader!(core, "shaders/rorschach.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) {
self.compute_shader.handle_export(core, &mut self.base);
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);
}
fn resize(&mut self, core: &Core) {
self.base.default_resize(core, &mut self.compute_shader);
}
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_reset = 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| {
ctx.global_style_mut(|style| {
style.visuals.window_fill = egui::Color32::from_rgba_premultiplied(0, 0, 0, 180);
style.text_styles.get_mut(&egui::TextStyle::Body).unwrap().size = 11.0;
style.text_styles.get_mut(&egui::TextStyle::Button).unwrap().size = 10.0;
});
egui::Window::new("Rorschach")
.collapsible(true)
.resizable(true)
.default_width(280.0)
.show(ctx, |ui| {
egui::CollapsingHeader::new("Shape")
.default_open(true)
.show(ui, |ui| {
if ui.add(egui::Slider::new(&mut params.seed, 0.0..=100.0).text("Seed")).changed() { changed = true; should_reset = true; }
if ui.add(egui::Slider::new(&mut params.zoom, 1.0..=10.0).text("Zoom")).changed() { changed = true; should_reset = true; }
if ui.add(egui::Slider::new(&mut params.threshold, 0.3..=0.6).text("Ink Amount")).changed() { changed = true; should_reset = true; }
if ui.add(egui::Slider::new(&mut params.distortion, 0.0..=3.0).text("Warping")).changed() { changed = true; should_reset = true; }
if ui.add(egui::Slider::new(&mut params.fbm_octaves, 1.0..=25.0).text("Detail Octaves")).changed() {
params.fbm_octaves = params.fbm_octaves.round();
changed = true;
should_reset = true;
}
});
egui::CollapsingHeader::new("Particle Tracer")
.default_open(false)
.show(ui, |ui| {
changed |= ui.add(egui::Slider::new(&mut params.particle_speed, 0.0..=5.0).text("brush")).changed();
changed |= ui.add(egui::Slider::new(&mut params.trace_steps, 1.0..=100.0).text("Density")).changed();
changed |= ui.add(egui::Slider::new(&mut params.particle_life, 0.8..=0.999).text("Trail Life")).changed();
});
egui::CollapsingHeader::new("Visual Settings")
.default_open(false)
.show(ui, |ui| {
ui.label("Primary Ink Color:");
let mut color = [params.color_r, params.color_g, params.color_b];
if ui.color_edit_button_rgb(&mut color).changed() {
params.color_r = color[0];
params.color_g = color[1];
params.color_b = color[2];
changed = true;
}
changed |= ui.add(egui::Slider::new(&mut params.contrast, 0.5..=6.0).text("Contrast")).changed();
changed |= ui.add(egui::Slider::new(&mut params.gamma, 0.1..=2.0).text("Gamma")).changed();
changed |= ui.add(egui::Slider::new(&mut params.style, 0.0..=1.0).text("Blend")).changed();
ui.separator();
ui.horizontal(|ui| {
ui.label("Phase");
let mut tint_color = [params.tint_x, params.tint_y, params.tint_z];
if ui.color_edit_button_rgb(&mut tint_color).changed() {
params.tint_x = tint_color[0];
params.tint_y = tint_color[1];
params.tint_z = tint_color[2];
changed = true;
}
});
});
ui.separator();
ShaderControls::render_controls_widget(ui, &mut controls_request);
ui.separator();
should_start_export = ExportManager::render_export_ui_widget(ui, &mut export_request);
ui.separator();
ui.horizontal(|ui| {
ui.label(format!("Frame: {}", self.compute_shader.current_frame));
if ui.button("Clear").clicked() { should_reset = true; }
});
});
})
} else {
self.base.render_ui(core, |_ctx| {})
};
if controls_request.should_clear_buffers || should_reset {
self.compute_shader.current_frame = 0;
self.compute_shader.time_uniform.data.frame = 0;
self.compute_shader.time_uniform.update(&core.queue);
}
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.apply_control_request(controls_request);
self.base.export_manager.apply_ui_request(export_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.base.end_frame(core, frame, full_output);
Ok(())
}
fn handle_input(&mut self, core: &Core, event: &WindowEvent) -> bool {
self.base.default_handle_input(core, event)
}
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
env_logger::init();
let (app, event_loop) = ShaderApp::new("Rorschach Tracer", 700, 500);
app.run(event_loop, RorschachShader::init)
}