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feat: added Font to get glyphs out of ttf files and make a TextureAtlas with them (right now only latin range of Unicode to not explode the atlas) and started trying to incorporate text rendering in ECS and Renderer2D

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lisk77 2025-03-15 23:17:02 +01:00
parent 5430ee0d7e
commit 9e16179df3
12 changed files with 191 additions and 317 deletions
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41
crates/comet_renderer/src/renderer2d.rs
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@ -11,7 +11,7 @@ use comet_colors::LinearRgba;
use comet_ecs::{Camera, Camera2D, Component, Position2D, Render, Render2D, Transform2D, Scene};
use comet_log::{debug, info};
use comet_math::{Point3, Vec2, Vec3};
use comet_resources::{texture, graphic_resource_manager::GraphicResorceManager, Texture, Vertex};
use comet_resources::{texture, graphic_resource_manager::GraphicResourceManager, Texture, Vertex};
use comet_resources::texture_atlas::TextureRegion;
use comet_structs::ComponentSet;
use crate::camera::{RenderCamera, CameraUniform};
@ -37,7 +37,7 @@ pub struct Renderer2D<'a> {
clear_color: Color,
diffuse_texture: Texture,
diffuse_bind_group: wgpu::BindGroup,
graphic_resource_manager: GraphicResorceManager,
graphic_resource_manager: GraphicResourceManager,
camera: RenderCamera,
camera_uniform: CameraUniform,
camera_buffer: wgpu::Buffer,
@ -117,7 +117,7 @@ impl<'a> Renderer2D<'a> {
let num_indices = index_data.len() as u32;
let graphic_resource_manager = GraphicResorceManager::new();
let graphic_resource_manager = GraphicResourceManager::new();
let diffuse_bytes = include_bytes!(r"../../../resources/textures/comet_icon.png");
let diffuse_texture =
@ -540,6 +540,10 @@ impl<'a> Renderer2D<'a> {
info!("Applied base shader!");
}
pub fn load_font(&mut self, path: &str, size: f32) {
self.graphic_resource_manager.load_font(path, size);
}
/// An interface for getting the location of the texture in the texture atlas.
pub fn get_texture_region(&self, texture_path: String) -> &TextureRegion {
assert!(self.graphic_resource_manager.texture_atlas().textures().contains_key(&texture_path), "Texture not found in atlas");
@ -741,7 +745,34 @@ impl<'a> Renderer2D<'a> {
/// A function to draw text at a given position.
pub fn draw_text_at(&mut self, text: &str, position: Point3) {
todo!()
let mut x = position.x();
let mut y = position.y();
for c in text.chars() {
let region = self.get_texture_region(c.to_string());
let (dim_x, dim_y) = region.dimensions();
let (bound_x, bound_y) =
((dim_x as f32/ self.config.width as f32) * 0.5, (dim_y as f32/ self.config.height as f32) * 0.5);
let vertices: &mut Vec<Vertex> = &mut vec![
Vertex :: new ( [-bound_x + x, bound_y + y, 0.0], [region.x0(), region.y0()], [0.0, 0.0, 0.0, 0.0] ),
Vertex :: new ( [-bound_x + x, -bound_y + y, 0.0], [region.x0(), region.y1()], [0.0, 0.0, 0.0, 0.0] ),
Vertex :: new ( [ bound_x + x, -bound_y + y, 0.0], [region.x1(), region.y1()], [0.0, 0.0, 0.0, 0.0] ) ,
Vertex :: new ( [ bound_x + x, bound_y + y, 0.0], [region.x1(), region.y0()], [0.0, 0.0, 0.0, 0.0] )
];
let buffer_size = self.vertex_data.len() as u16;
let indices: &mut Vec<u16> = &mut vec![
0 + buffer_size, 1 + buffer_size, 3 + buffer_size,
1 + buffer_size, 2 + buffer_size, 3 + buffer_size
];
self.push_to_buffers(vertices, indices);
x += dim_x as f32;
}
}
fn find_priority_camera(&self, cameras: Vec<Camera2D>) -> usize {
@ -779,7 +810,7 @@ impl<'a> Renderer2D<'a> {
let camera_buffer = self.device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("Camera Buffer"),
contents: bytemuck::cast_slice(&[camera_uniform]),
usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
usage: BufferUsages::UNIFORM | BufferUsages::COPY_DST,
});
let camera_bind_group_layout =