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-rw-r--r--src/main.rs193
1 files changed, 131 insertions, 62 deletions
diff --git a/src/main.rs b/src/main.rs
index eaeaf9d..8f8859b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,5 @@
/*
@TODO:
-- pause screen
- reload settings.txt when changed
- strip ' ' and '\n' from *inside* string
- flash error on bad string (see @TODO(error handling))
@@ -42,7 +41,17 @@ type Mat3 = Matrix3<f32>;
type Mat4 = Matrix4<f32>;
type Rot3 = Rotation3<f32>;
-const MENU_SCALE: f32 = 0.5;
+const MENU_SCALE: f32 = 0.6;
+#[derive(Clone, Copy)]
+enum MenuButton {
+ Resume,
+ Quit
+}
+/// array of buttons in menu.png. (y, height, button)
+const MENU_BUTTONS: &[(f32, f32, MenuButton)] = &[
+ (375.0, 135.0, MenuButton::Resume),
+ (605.0, 165.0, MenuButton::Quit),
+];
#[repr(i32)]
#[derive(Clone, Copy)]
@@ -233,6 +242,7 @@ struct State {
show_debug_info: bool,
fullscreen: bool,
esc_menu: bool,
+ quit: bool,
frame_time: Instant,
programs: Programs,
config: sdf::SceneConfig,
@@ -360,6 +370,7 @@ impl State {
main_array,
test_array,
esc_menu: false,
+ quit: false,
post_array,
scene_list,
settings,
@@ -436,7 +447,7 @@ impl State {
self.flash_icon = icon;
}
- fn render_resolution(&self) -> (i32, i32) {
+ fn get_render_resolution(&self) -> (i32, i32) {
let scale = self.settings.get_f32("scale").unwrap_or(1.0);
if scale <= 0.0 || scale > 100.0 {
win::display_error_message(&format!("bad scale: {scale}"));
@@ -450,6 +461,79 @@ impl State {
(w, h)
}
+ /// render the SDF to the main framebuffer
+ fn render_main(&mut self) {
+ let render_resolution = self.get_render_resolution();
+ let window = &mut self.window;
+ let view = &self.view;
+ window.viewport(0, 0, render_resolution.0, render_resolution.1);
+
+ window.clear_screen(win::ColorF32::BLACK);
+ window.use_program(&self.programs.main);
+ window.bind_framebuffer(Some(&self.main_framebuffer));
+ window.uniform1f(
+ "u_aspect_ratio",
+ render_resolution.0 as f32 / render_resolution.1 as f32,
+ );
+ {
+ let (w, h) = window.size();
+ window.uniform2f("u_screen_size", w as f32, h as f32);
+ }
+ window.uniform1f("u_time", view.time as f32);
+ window.uniform1f(
+ "u_fov",
+ self.settings.get_f32("fov").unwrap_or(45.0).to_radians(),
+ );
+ window.uniform1f(
+ "u_focal_length",
+ self.settings.get_f32("focal-length").unwrap_or(1.0),
+ );
+ window.uniform1f("u_level_set", view.level_set);
+ window.uniform1i("u_hsv", self.settings.get_i32("hsv").unwrap_or(0));
+ let antialiasing = self.settings.get_i32("antialiasing").unwrap_or(1);
+ window.uniform2i("u_antialiasing", antialiasing, antialiasing);
+ window.uniform1i(
+ "u_iterations",
+ self.settings.get_i32("max-iterations").unwrap_or(30),
+ );
+ window.uniform1f(
+ "u_distance_threshold",
+ self.settings.get_f32("distance-threshold").unwrap_or(0.02),
+ );
+ window.uniform3x3f("u_rotation", view.rotation().as_slice());
+ window.uniform3f_slice("u_translation", view.pos.as_slice());
+ window.uniform4f_color("u_flash", self.flash);
+ window.uniform1i("u_flash_icon", self.flash_icon as i32);
+
+ self.main_array.draw();
+ }
+
+ /// draw the main framebuffer to the screen, apply postprocessing
+ fn render_post(&mut self) {
+ let highlight_button = self.menu_button_at_pos(self.window.get_mouse_pos());
+ let render_resolution = self.get_render_resolution();
+ let window = &mut self.window;
+ window.bind_framebuffer(None);
+ window.viewport_full_screen();
+ window.use_program(&self.programs.post);
+ window.active_texture(0, &self.main_framebuffer_texture);
+ window.active_texture(1, &self.menu_texture);
+ window.uniform1f("u_paused", if self.esc_menu { 1.0 } else { 0.0 });
+ window.uniform_texture("u_main_texture", 0);
+ window.uniform_texture("u_menu_texture", 1);
+ window.uniform1f(
+ "u_aspect_ratio",
+ render_resolution.0 as f32 / render_resolution.1 as f32,
+ );
+ window.uniform1f("u_menu_scale", MENU_SCALE);
+ if let Some((_, y1, y2)) = highlight_button {
+ window.uniform2f("u_highlight_button", y1, y2);
+ } else {
+ window.uniform2f("u_highlight_button", 0.0, 0.0);
+ }
+ self.post_array.draw();
+ }
+
/// save a screenshot
fn take_screenshot(&mut self) -> Result<(), String> {
let texture = &self.main_framebuffer_texture;
@@ -489,6 +573,32 @@ impl State {
self.flash(Icon::Screenshot);
Ok(())
}
+
+ /// returns Some(button, v1, v2) which is a bit weird but oh well
+ fn menu_button_at_pos(&self, screen_pos: (i32, i32)) -> Option<(MenuButton, f32, f32)> {
+ let window_height = self.window.size().1 as f32;
+ let texture_height = self.menu_texture.height() as f32;
+ let y = screen_pos.1 as f32 / window_height as f32;
+ for &(y1, h, button) in MENU_BUTTONS {
+ let y1 = y1 / texture_height;
+ let h = h / texture_height;
+ let y2 = y1 + h;
+ let y1 = (y1 - 0.5) * MENU_SCALE + 0.5;
+ let y2 = (y2 - 0.5) * MENU_SCALE + 0.5;
+ if y >= y1 && y <= y2 {
+ return Some((button, 1.0 - y2, 1.0 - y1));
+ }
+ }
+ None
+ }
+
+ fn press_menu_button(&mut self, button: MenuButton) {
+ use MenuButton::*;
+ match button {
+ Resume => self.esc_menu = false,
+ Quit => self.quit = true,
+ }
+ }
// returns false if we should quit
fn frame(&mut self) -> bool {
@@ -509,6 +619,7 @@ impl State {
while let Some(event) = self.window.next_event() {
use win::Event::*;
use win::Key::*;
+ use win::MouseButton;
match event {
Quit => return false,
KeyDown {
@@ -595,6 +706,13 @@ impl State {
.pitch_by(-yrel as f32 * mouse_sensitivity * frame_dt);
}
}
+ MouseButtonDown { button: MouseButton::Left, x, y, .. } => {
+ if self.esc_menu {
+ if let Some((menu_button, _, _)) = self.menu_button_at_pos((x, y)) {
+ self.press_menu_button(menu_button);
+ }
+ }
+ }
_ => {}
}
}
@@ -666,7 +784,7 @@ impl State {
self.view.level_set += dl * level_set_amount;
}
- let render_resolution = self.render_resolution();
+ let render_resolution = self.get_render_resolution();
if render_resolution != self.main_framebuffer_size {
// window resized. create new framebuffer
let result = self.main_framebuffer_texture.set_data::<ColorU8>(
@@ -687,77 +805,28 @@ impl State {
self.main_framebuffer_size = render_resolution;
}
- let window = &mut self.window;
- let view = &self.view;
- window.viewport(0, 0, render_resolution.0, render_resolution.1);
-
- window.clear_screen(win::ColorF32::BLACK);
- window.use_program(&self.programs.main);
- window.bind_framebuffer(Some(&self.main_framebuffer));
- window.uniform1f(
- "u_aspect_ratio",
- render_resolution.0 as f32 / render_resolution.1 as f32,
- );
- {
- let (w, h) = window.size();
- window.uniform2f("u_screen_size", w as f32, h as f32);
+ // if the escape menu is open, stop rendering the SDF.
+ // the framebuffer contents will stay the same.
+ // this lowers GPU usage (and increases framerate).
+ if !self.esc_menu {
+ self.render_main();
}
- window.uniform1f("u_time", view.time as f32);
- window.uniform1f(
- "u_fov",
- self.settings.get_f32("fov").unwrap_or(45.0).to_radians(),
- );
- window.uniform1f(
- "u_focal_length",
- self.settings.get_f32("focal-length").unwrap_or(1.0),
- );
- window.uniform1f("u_level_set", view.level_set);
- window.uniform1i("u_hsv", self.settings.get_i32("hsv").unwrap_or(0));
- let antialiasing = self.settings.get_i32("antialiasing").unwrap_or(1);
- window.uniform2i("u_antialiasing", antialiasing, antialiasing);
- window.uniform1i(
- "u_iterations",
- self.settings.get_i32("max-iterations").unwrap_or(30),
- );
- window.uniform1f(
- "u_distance_threshold",
- self.settings.get_f32("distance-threshold").unwrap_or(0.02),
- );
- window.uniform3x3f("u_rotation", view.rotation().as_slice());
- window.uniform3f_slice("u_translation", view.pos.as_slice());
- window.uniform4f_color("u_flash", self.flash);
- window.uniform1i("u_flash_icon", self.flash_icon as i32);
-
+
self.flash.a = f32::max(self.flash.a - frame_dt * (2.0 - 1.0 * self.flash.a), 0.0);
if self.flash.a <= 0.0 {
// icon is no longer visible
self.flash_icon = Icon::None;
}
- self.main_array.draw();
-
- window.bind_framebuffer(None);
- window.viewport_full_screen();
- window.use_program(&self.programs.post);
- window.active_texture(0, &self.main_framebuffer_texture);
- window.active_texture(1, &self.menu_texture);
- window.uniform1f("u_paused", if self.esc_menu { 1.0 } else { 0.0 });
- window.uniform_texture("u_main_texture", 0);
- window.uniform_texture("u_menu_texture", 1);
- window.uniform1f(
- "u_aspect_ratio",
- render_resolution.0 as f32 / render_resolution.1 as f32,
- );
- window.uniform1f("u_menu_scale", MENU_SCALE);
- self.post_array.draw();
+ self.render_post();
- window.swap();
+ self.window.swap();
if self.show_debug_info {
println!("frame time = {:?}ms", frame_dt * 1000.0);
}
- true
+ !self.quit
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-02 02:45:18 +0000