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feat: improve debug rendering performance via batch rendering of rects

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This commit is contained in:
Ryan Walters
2025-09-03 19:13:53 -05:00
parent 6771dea02b
commit f2732a7ff7
2 changed files with 50 additions and 24 deletions
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2
src/game.rs
View File

@@ -126,7 +126,7 @@ impl Game {
EventType::Display,
EventType::Window,
EventType::MouseWheel,
EventType::MouseMotion,
// EventType::MouseMotion,
EventType::MouseButtonDown,
EventType::MouseButtonUp,
EventType::MouseButtonDown,

72
src/systems/debug.rs
View File

@@ -12,6 +12,8 @@ use sdl2::pixels::Color;
use sdl2::rect::{Point, Rect};
use sdl2::render::{Canvas, Texture};
use sdl2::video::Window;
use smallvec::SmallVec;
use tracing::warn;
#[derive(Resource, Default, Debug, Copy, Clone)]
pub struct DebugState {
@@ -131,15 +133,27 @@ pub fn debug_render_system(
};
debug_canvas.set_draw_color(Color::GREEN);
for (collider, position) in colliders.iter() {
let pos = position.get_pixel_position(&map.graph).unwrap();
{
let rects = colliders
.iter()
.map(|(collider, position)| {
let pos = position.get_pixel_position(&map.graph).unwrap();
// Transform position and size using common methods
let pos = (pos * scale).as_ivec2();
let size = (collider.size * scale) as u32;
// Transform position and size using common methods
let pos = (pos * scale).as_ivec2();
let size = (collider.size * scale) as u32;
let rect = Rect::from_center(Point::from((pos.x, pos.y)), size, size);
debug_canvas.draw_rect(rect).unwrap();
Rect::from_center(Point::from((pos.x, pos.y)), size, size)
})
.collect::<SmallVec<[Rect; 100]>>();
if rects.len() > rects.capacity() {
warn!(
capacity = rects.capacity(),
count = rects.len(),
"Collider rects capacity exceeded"
);
}
debug_canvas.draw_rects(&rects).unwrap();
}
debug_canvas.set_draw_color(Color {
@@ -160,26 +174,38 @@ pub fn debug_render_system(
.unwrap();
}
for (id, node) in map.graph.nodes().enumerate() {
let pos = node.position;
{
let rects: Vec<_> = map
.graph
.nodes()
.enumerate()
.filter_map(|(id, node)| {
let pos = transform_position_with_offset(node.position, scale);
let size = (2.0 * scale) as u32;
let rect = Rect::new(pos.x - (size as i32 / 2), pos.y - (size as i32 / 2), size, size);
// Set color based on whether the node is the closest to the cursor
debug_canvas.set_draw_color(Color {
a: f32_to_u8(if Some(id) == closest_node { 0.75 } else { 0.6 }),
..(if Some(id) == closest_node {
Color::YELLOW
} else {
Color::BLUE
// If the node is the one closest to the cursor, draw it immediately
if closest_node == Some(id) {
debug_canvas.set_draw_color(Color::YELLOW);
debug_canvas.fill_rect(rect).unwrap();
return None;
}
Some(rect)
})
});
.collect();
// Transform position using common method
let pos = transform_position_with_offset(pos, scale);
let size = (2.0 * scale) as u32;
if rects.len() > rects.capacity() {
warn!(
capacity = rects.capacity(),
count = rects.len(),
"Node rects capacity exceeded"
);
}
debug_canvas
.fill_rect(Rect::new(pos.x - (size as i32 / 2), pos.y - (size as i32 / 2), size, size))
.unwrap();
// Draw the non-closest nodes all at once in blue
debug_canvas.set_draw_color(Color::BLUE);
debug_canvas.fill_rects(&rects).unwrap();
}
// Render node ID if a node is highlighted