reo
0c0d5cdb2a
Finally solved the problems with the imgui renderer after a long chat with clankers. Fixed some other stuff as well. Reminder to keep the rendered_this_frame check as that's what solved it. Probably a deeper issue down there that caused us to render twice, but whatever.
68 lines
2.2 KiB
Rust
68 lines
2.2 KiB
Rust
use std::time::Instant;
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use glium::Display;
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use glium::glutin::surface::WindowSurface;
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use imgui::{Context as ImguiContext};
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use imgui_winit_support::{HiDpiMode, WinitPlatform};
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use imgui_glium_renderer::Renderer as ImguiGliumRenderer;
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use winit::window::Window;
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use winit::event::Event;
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use glium::Frame;
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use crate::RenderingSystem;
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use crate::system::RenderingContext;
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pub struct ImguiBridge {
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imgui: ImguiContext,
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platform: WinitPlatform,
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renderer: ImguiGliumRenderer,
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last_frame: Instant,
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rendered_this_frame: bool,
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}
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impl RenderingSystem for ImguiBridge {
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fn handle_event(&mut self, window: &mut Window, event: Event<()>) {
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self.platform.handle_event(self.imgui.io_mut(), window, &event);
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}
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fn prepare_frame(&mut self, window: &mut Window) {
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self.rendered_this_frame = false;
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let now = Instant::now();
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self.imgui.io_mut().update_delta_time(now - self.last_frame);
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self.last_frame = now;
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self.platform
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.prepare_frame(self.imgui.io_mut(), window)
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.expect("Failed to prepare frame");
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}
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fn render(&mut self, ctx: &mut RenderingContext) {
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if self.rendered_this_frame { return; }
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self.rendered_this_frame = true;
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let ui = self.imgui.frame();
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ctx.debug_ui_buffer.borrow().write_buffer(&ui);
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self.platform.prepare_render(&ui, ctx.window);
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let draw_data = self.imgui.render();
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if draw_data.total_vtx_count == 0 && draw_data.total_idx_count == 0 {
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return;
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}
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self.renderer.render(ctx.target, draw_data).expect("imgui rendering failed");
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}
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fn initialize(display: &Display<WindowSurface>, window: &Window) -> Self {
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let mut imgui = ImguiContext::create();
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imgui.set_ini_filename(None);
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let mut platform = WinitPlatform::new(&mut imgui);
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platform.attach_window(imgui.io_mut(), window, HiDpiMode::Default);
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imgui.fonts().add_font(&[imgui::FontSource::DefaultFontData { config: None }]);
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let renderer = ImguiGliumRenderer::new(&mut imgui, display).unwrap();
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Self {
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imgui,
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platform,
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renderer,
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last_frame: Instant::now(),
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rendered_this_frame: false,
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}
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}
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}
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