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|
use std::ffi::CString;
use std::ptr::addr_of_mut;
use celeritas_sys::*;
use egui_backend::egui::{vec2, Pos2, Rect};
use egui_glfw as egui_backend;
use egui_glfw::glfw::{fail_on_errors, Context};
use egui_glfw::glfw;
const SCREEN_WIDTH: u32 = 1000;
const SCREEN_HEIGHT: u32 = 1000;
fn main() {
unsafe {
let mut glfw = glfw::init(glfw::fail_on_errors!()).unwrap();
glfw.window_hint(glfw::WindowHint::ContextVersion(4, 1));
glfw.window_hint(glfw::WindowHint::OpenGlForwardCompat(true));
glfw.window_hint(glfw::WindowHint::OpenGlProfile(
glfw::OpenGlProfileHint::Core,
));
glfw.window_hint(glfw::WindowHint::DoubleBuffer(true));
glfw.window_hint(glfw::WindowHint::Resizable(false));
let (mut window, events) = glfw
.create_window(
SCREEN_WIDTH,
SCREEN_HEIGHT,
"Egui in GLFW!",
glfw::WindowMode::Windowed,
)
.expect("Failed to create GLFW window.");
window.set_all_polling(true);
window.make_current();
// glfw.set_swap_interval(glfw::SwapInterval::None);
glfw.set_swap_interval(glfw::SwapInterval::Adaptive);
gl::load_with(|symbol| window.get_proc_address(symbol) as *const _);
let window_ptr = window.window_ptr();
unsafe {
// Cast the window pointer to the expected type
let window_ptr = window_ptr as *mut celeritas_sys::GLFWwindow;
Core_Bringup(window_ptr);
};
let mut painter = egui_backend::Painter::new(&mut window);
let egui_ctx = egui::Context::default();
let (width, height) = window.get_framebuffer_size();
let native_pixels_per_point = window.get_content_scale().0;
let native_pixels_per_point = 2.0;
egui_ctx.set_pixels_per_point(2.0);
let mut egui_input_state = egui_backend::EguiInputState::new(egui::RawInput {
screen_rect: Some(Rect::from_min_size(
Pos2::new(0f32, 0f32),
vec2(width as f32, height as f32) / native_pixels_per_point,
)),
..Default::default()
});
egui_input_state.input.time = Some(0.01);
// let triangle = triangle::Triangle::new();
let slider = &mut 0.0;
// C data
let camera_pos = Vec3 {
x: 18.9,
y: 10.6,
z: 11.6,
};
let camera_front = Vec3 {
x: -0.6,
y: -0.2,
z: -0.7,
};
let mut camera = Camera_Create(
camera_pos,
camera_front,
Vec3 {
x: 0.0,
y: 1.0,
z: 0.0,
},
45.0,
);
SetCamera(camera);
let mut cube_geo = Geo_CreateCuboid(f32x3 {
x: 2.0,
y: 2.0,
z: 2.0,
});
let mut crate_mesh = Mesh_Create(addr_of_mut!(cube_geo), false);
let albedo_map = TextureLoadFromFile(
CString::new("assets/demo/crate/Wood_Crate_001_basecolor.jpg")
.unwrap()
.as_ptr() as *const i8,
);
let roughness_map = TextureLoadFromFile(
CString::new("assets/demo/crate/Wood_Crate_001_roughness.jpg")
.unwrap()
.as_ptr() as *const i8,
);
let normal_map = TextureLoadFromFile(
CString::new("assets/demo/crate/Wood_Crate_001_normal.jpg")
.unwrap()
.as_ptr() as *const i8,
);
let ao_map = TextureLoadFromFile(
CString::new("assets/demo/crate/Wood_Crate_001_ambientOcclusion.jpg")
.unwrap()
.as_ptr() as *const i8,
);
let name: [i8; 64] = [0; 64];
let mut crate_mat = Material {
name: name,
kind: 0,
param_albedo: Vec3 {
x: 0.0,
y: 0.0,
z: 0.0,
},
param_metallic: 0.0,
param_roughness: 0.0,
param_ao: 0.0,
pbr_albedo_map: albedo_map,
pbr_normal_map: normal_map,
metal_roughness_combined: true,
pbr_metallic_map: TextureHandle { raw: 99999 },
pbr_roughness_map: roughness_map,
pbr_ao_map: ao_map,
};
let crate_renderent = RenderEnt {
mesh: addr_of_mut!(crate_mesh),
material: addr_of_mut!(crate_mat),
affine: mat4_ident(),
casts_shadows: true,
};
let mut render_ents: [RenderEnt; 1] = [crate_renderent];
let mut skybox = Skybox_Default();
// Main rendering loop
while !window.should_close() {
glfw.poll_events();
egui_ctx.begin_frame(egui_input_state.input.take());
unsafe {
gl::ClearColor(0.455, 0.302, 0.663, 1.0);
gl::Clear(gl::COLOR_BUFFER_BIT);
gl::Clear(gl::DEPTH_TEST);
}
Frame_Begin();
gl::Enable(gl::DEPTH_TEST);
gl::Enable(gl::CULL_FACE);
Camera_Update(addr_of_mut!(camera));
SetCamera(camera);
Skybox_Draw(addr_of_mut!(skybox), camera);
Render_RenderEntities(render_ents.as_mut_ptr(), render_ents.len());
// Frame_End();
// triangle.draw();
gl::Disable(gl::DEPTH_TEST);
gl::Disable(gl::CULL_FACE);
egui::Window::new("Egui with GLFW").show(&egui_ctx, |ui| {
ui.label("Celeritas in-game editor");
let btn_m = &mut ui.button("-");
let btn_p = &mut ui.button("+");
ui.add(egui::Slider::new(slider, 0.0..=100.0).text("My value"));
if btn_m.clicked() && *slider > 0.0 {
*slider -= 1.0;
}
if btn_p.clicked() && *slider < 100.0 {
*slider += 1.0;
}
});
let egui::FullOutput {
platform_output,
textures_delta,
shapes,
..
} = egui_ctx.end_frame();
//Handle cut, copy text from egui
if !platform_output.copied_text.is_empty() {
egui_backend::copy_to_clipboard(&mut egui_input_state, platform_output.copied_text);
}
//Note: passing a bg_color to paint_jobs will clear any previously drawn stuff.
//Use this only if egui is being used for all drawing and you aren't mixing your own Open GL
//drawing calls with it.
//Since we are custom drawing an OpenGL Triangle we don't need egui to clear the background.
let clipped_shapes = egui_ctx.tessellate(shapes, native_pixels_per_point);
painter.paint_and_update_textures(
native_pixels_per_point,
&clipped_shapes,
&textures_delta,
);
for (_, event) in glfw::flush_messages(&events) {
match event {
glfw::WindowEvent::Close => window.set_should_close(true),
_ => {
egui_backend::handle_event(event, &mut egui_input_state);
}
}
}
window.swap_buffers();
}
}
}
|
