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-rw-r--r--src/font.rs363
1 files changed, 0 insertions, 363 deletions
diff --git a/src/font.rs b/src/font.rs
deleted file mode 100644
index e431896..0000000
--- a/src/font.rs
+++ /dev/null
@@ -1,363 +0,0 @@
-use std::collections::HashMap;
-
-use crate::{context, mesh, shader, texture};
-use glow::HasContext;
-
-pub struct Bitmap {
- pub char_width: i32,
- pub char_height: i32,
- pub font_width: i32,
- pub font_height: i32,
- pub shader: shader::Shader,
- pub font: texture::Texture,
- pub vao: glow::VertexArray,
- pub vertex_buf: glow::Buffer,
- pub texcoords_buf: glow::Buffer,
- pub colors_buf: glow::Buffer,
- pub index_buf: glow::Buffer,
-}
-
-impl Bitmap {
- pub fn from_image(
- ctx: &context::Context,
- char_width: i32, char_height: i32,
- font_width: i32, font_height: i32,
- data: &[u8],
- ) -> Self {
- let shader = shader::Shader::new_nolib(
- &ctx,
- include_str!("assets/shaders/bitmap/vert.glsl"),
- include_str!("assets/shaders/bitmap/frag.glsl"),
- );
- let font = texture::Texture::new(ctx, data);
- unsafe {
- let vao = ctx.gl.create_vertex_array().expect("failed to initialize vao");
- ctx.gl.bind_vertex_array(Some(vao));
- let vertex_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(vertex_buf));
- ctx.gl.vertex_attrib_pointer_f32(mesh::ATTRIB_VERTEX, 2, glow::FLOAT, false, 0, 0);
- ctx.gl.enable_vertex_attrib_array(mesh::ATTRIB_VERTEX);
- let texcoords_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(texcoords_buf));
- ctx.gl.vertex_attrib_pointer_f32(mesh::ATTRIB_TEXCOORD, 2, glow::FLOAT, false, 0, 0);
- ctx.gl.enable_vertex_attrib_array(mesh::ATTRIB_TEXCOORD);
- let colors_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(colors_buf));
- ctx.gl.vertex_attrib_pointer_f32(mesh::ATTRIB_COLOR, 3, glow::FLOAT, false, 0, 0);
- ctx.gl.enable_vertex_attrib_array(mesh::ATTRIB_COLOR);
- let index_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, Some(index_buf));
- Self {
- char_width, char_height,
- font_width, font_height,
- shader,
- font,
- vao,
- vertex_buf,
- texcoords_buf,
- colors_buf,
- index_buf,
- }
- }
- }
-
- pub fn new(ctx: &context::Context) -> Self {
- Self::from_image(ctx, 7, 9, 112, 54, include_bytes!("assets/fonts/simple.png"))
- }
-
- pub fn render_text_helper(&self, ctx: &context::Context, pos: &glam::Vec2, text: &str, color: &[glam::Vec3]) {
- let mut cur = glam::Vec2::new(0.0, 0.0);
- let mut vertices = Vec::new();
- let mut texcoords = Vec::new();
- let mut colors = Vec::new();
- let mut indices = Vec::new();
- let cwidth = self.char_width as f32 / self.font_width as f32;
- let cheight = self.char_height as f32 / self.font_height as f32;
- let row_len = self.font_width as u32 / self.char_width as u32;
- for (i, c) in text.chars().enumerate() {
- if c == '\n' {
- cur.x = 0.0;
- cur.y -= self.char_height as f32;
- } else {
- let idx = vertices.len() as u32;
- vertices.push(cur);
- vertices.push(cur + glam::Vec2::new(self.char_width as f32, 0.0));
- vertices.push(cur + glam::Vec2::new(self.char_width as f32, self.char_height as f32));
- vertices.push(cur + glam::Vec2::new(0.0, self.char_height as f32));
- let cidx = c as u32 - ' ' as u32;
- let col = cidx % row_len;
- let row = cidx / row_len;
- let tcbase = glam::Vec2::new(col as f32 * cwidth, row as f32 * cheight);
- texcoords.push(tcbase + glam::Vec2::new(0.0, cheight));
- texcoords.push(tcbase + glam::Vec2::new(cwidth, cheight));
- texcoords.push(tcbase + glam::Vec2::new(cwidth, 0.0));
- texcoords.push(tcbase);
- let c = if let Some(c) = color.get(if color.len() == 0 { 0 } else { i % color.len() }) {
- *c
- } else {
- glam::Vec3::new(1.0, 1.0, 1.0)
- };
- colors.push(c); colors.push(c); colors.push(c); colors.push(c);
- indices.push(idx + 0); indices.push(idx + 1); indices.push(idx + 2);
- indices.push(idx + 0); indices.push(idx + 3); indices.push(idx + 2);
- cur.x += self.char_width as f32;
- }
- }
- let index_bytes: Vec<u8> = indices.iter().flat_map(|x| x.to_ne_bytes()).collect();
- self.shader.bind(ctx);
- self.font.bind(ctx);
- let scale = glam::Vec2::new(2.0 / ctx.render_width, 2.0 / ctx.render_height);
- let offset = glam::Vec2::new(
- -ctx.render_width / 2.0,
- ctx.render_height / 2.0 - self.char_height as f32,
- );
- let npos = (glam::Vec2::new(pos.x, -pos.y) + offset) * scale;
- self.shader.set_mat4(
- ctx, "transform",
- &glam::Mat4::from_scale_rotation_translation(
- glam::Vec3::new(scale.x, scale.y, 1.0),
- glam::Quat::IDENTITY,
- glam::Vec3::new(npos.x, npos.y, 0.0),
- ),
- );
- unsafe {
- ctx.gl.bind_vertex_array(Some(self.vao));
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(self.vertex_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ARRAY_BUFFER,
- std::slice::from_raw_parts(
- vertices.as_ptr() as _,
- vertices.len() * std::mem::size_of::<f32>() * 2,
- ),
- glow::STATIC_DRAW,
- );
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(self.texcoords_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ARRAY_BUFFER,
- std::slice::from_raw_parts(
- texcoords.as_ptr() as _,
- texcoords.len() * std::mem::size_of::<f32>() * 2,
- ),
- glow::STATIC_DRAW,
- );
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(self.colors_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ARRAY_BUFFER,
- std::slice::from_raw_parts(
- colors.as_ptr() as _,
- colors.len() * std::mem::size_of::<f32>() * 3,
- ),
- glow::STATIC_DRAW,
- );
- ctx.gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, Some(self.index_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ELEMENT_ARRAY_BUFFER,
- &index_bytes,
- glow::STATIC_DRAW,
- );
- ctx.gl.draw_elements(glow::TRIANGLES, indices.len() as _, glow::UNSIGNED_INT, 0);
- }
- }
-
- pub fn render_text(&self, ctx: &context::Context, pos: &glam::Vec2, text: &str) {
- self.render_text_helper(ctx, pos, text, &[]);
- }
-}
-
-pub struct AtlasInfo {
- pub pos: usize,
-}
-
-pub struct TrueType {
- pub shader: shader::Shader,
- pub font: fontdue::Font,
- pub atlas: texture::Texture,
- pub atlaswidth: usize,
- pub cellwidth: usize,
- pub cellheight: usize,
- pub info: HashMap<char, AtlasInfo>,
- pub vao: glow::VertexArray,
- pub vertex_buf: glow::Buffer,
- pub texcoords_buf: glow::Buffer,
- pub colors_buf: glow::Buffer,
- pub index_buf: glow::Buffer,
-}
-
-impl TrueType {
- pub fn new(ctx: &context::Context, size: f32, data: &[u8]) -> Self {
- let shader = shader::Shader::new_nolib(
- &ctx,
- include_str!("assets/shaders/truetype/vert.glsl"),
- include_str!("assets/shaders/truetype/frag.glsl"),
- );
- let font = fontdue::Font::from_bytes(data, fontdue::FontSettings::default())
- .expect("failed to load font");
- let mut chardata = HashMap::new();
- for ci in 0..128 {
- if let Some(c) = char::from_u32(ci) {
- if !c.is_ascii_graphic() { continue; }
- let res = font.rasterize(c, size);
- chardata.insert(c, res);
- }
- }
- let mut cellwidth = 0;
- let mut cellbase = 0;
- let mut cellextra = 0;
- for (_, (m, _)) in &chardata {
- if m.width > cellwidth { cellwidth = m.width }
- if m.height > cellbase { cellbase = m.height }
- let extra = (-m.ymin.min(0)) as usize;
- if extra > cellextra { cellextra = extra }
- }
- let mut cellheight = cellbase + cellextra;
- cellwidth = cellwidth.next_power_of_two();
- cellheight = cellheight.next_power_of_two();
- let atlaswidth = (chardata.len() * cellwidth).next_power_of_two();
- let mut info = HashMap::new();
- let mut atlas_bmp: Vec<u8> = vec![0; atlaswidth * cellheight];
- for (i, (c, (m, bmp))) in chardata.iter().enumerate() {
- let by = ((cellbase as i32) - (m.height as i32) - m.ymin) as usize;
- let bx = cellwidth * i;
- info.insert(*c, AtlasInfo {
- pos: cellwidth * i,
- });
- for x in 0..m.width {
- for y in 0..m.height {
- atlas_bmp[bx + x + (by + y) * atlaswidth] = bmp[x + y * m.width];
- }
- }
- }
- let atlas = texture::Texture::new_empty(ctx);
- unsafe {
- ctx.gl.bind_texture(glow::TEXTURE_2D, Some(atlas.tex));
- ctx.gl.pixel_store_i32(glow::UNPACK_ALIGNMENT, 1);
- ctx.gl.tex_image_2d(
- glow::TEXTURE_2D,
- 0,
- glow::R8 as i32,
- atlaswidth as i32,
- cellheight as i32,
- 0,
- glow::RED,
- glow::UNSIGNED_BYTE,
- Some(&atlas_bmp),
- );
- ctx.gl.generate_mipmap(glow::TEXTURE_2D);
- let vao = ctx.gl.create_vertex_array().expect("failed to initialize vao");
- ctx.gl.bind_vertex_array(Some(vao));
- let vertex_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(vertex_buf));
- ctx.gl.vertex_attrib_pointer_f32(mesh::ATTRIB_VERTEX, 2, glow::FLOAT, false, 0, 0);
- ctx.gl.enable_vertex_attrib_array(mesh::ATTRIB_VERTEX);
- let texcoords_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(texcoords_buf));
- ctx.gl.vertex_attrib_pointer_f32(mesh::ATTRIB_TEXCOORD, 2, glow::FLOAT, false, 0, 0);
- ctx.gl.enable_vertex_attrib_array(mesh::ATTRIB_TEXCOORD);
- let colors_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(colors_buf));
- ctx.gl.vertex_attrib_pointer_f32(mesh::ATTRIB_COLOR, 3, glow::FLOAT, false, 0, 0);
- ctx.gl.enable_vertex_attrib_array(mesh::ATTRIB_COLOR);
- let index_buf = ctx.gl.create_buffer().expect("failed to create buffer object");
- ctx.gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, Some(index_buf));
- Self {
- shader, font, atlas, atlaswidth, cellwidth, cellheight, info,
- vao, vertex_buf, texcoords_buf, colors_buf, index_buf,
- }
- }
- }
-
- pub fn render_text_helper(&self, ctx: &context::Context, pos: &glam::Vec2, spacing: &glam::Vec2, text: &str, color: &[glam::Vec3]) {
- let mut cur = glam::Vec2::new(0.0, 0.0);
- let mut vertices = Vec::new();
- let mut texcoords = Vec::new();
- let mut colors = Vec::new();
- let mut indices = Vec::new();
- let cellwidth = self.cellwidth as f32;
- let cellheight = self.cellheight as f32;
- let cwidth = cellwidth / self.atlaswidth as f32;
- let cheight = 1.0;
- for (i, c) in text.chars().enumerate() {
- if c == '\n' {
- cur.x = 0.0;
- cur.y -= spacing.y;
- } else {
- let idx = vertices.len() as u32;
- if let Some(off) = self.info.get(&c) {
- vertices.push(cur);
- vertices.push(cur + glam::Vec2::new(cellwidth, 0.0));
- vertices.push(cur + glam::Vec2::new(cellwidth, cellheight));
- vertices.push(cur + glam::Vec2::new(0.0, cellheight));
- let tcbase = glam::Vec2::new(off.pos as f32 / self.atlaswidth as f32, 0.0);
- texcoords.push(tcbase + glam::Vec2::new(0.0, cheight));
- texcoords.push(tcbase + glam::Vec2::new(cwidth, cheight));
- texcoords.push(tcbase + glam::Vec2::new(cwidth, 0.0));
- texcoords.push(tcbase);
- let c = if let Some(c) = color.get(i) {
- *c
- } else {
- glam::Vec3::new(1.0, 1.0, 1.0)
- };
- colors.push(c); colors.push(c); colors.push(c); colors.push(c);
- indices.push(idx + 0); indices.push(idx + 1); indices.push(idx + 2);
- indices.push(idx + 0); indices.push(idx + 3); indices.push(idx + 2);
- }
- cur.x += spacing.x;
- }
- }
- let index_bytes: Vec<u8> = indices.iter().flat_map(|x| x.to_ne_bytes()).collect();
- let scale = glam::Vec2::new(2.0 / ctx.render_width, 2.0 / ctx.render_height);
- let offset = glam::Vec2::new(
- -ctx.render_width / 2.0,
- ctx.render_height / 2.0 - cellheight as f32,
- );
- let npos = (glam::Vec2::new(pos.x, -pos.y) + offset) * scale;
- self.shader.bind(ctx);
- self.shader.set_mat4(
- ctx, "transform",
- &glam::Mat4::from_scale_rotation_translation(
- glam::Vec3::new(scale.x, scale.y, 1.0),
- glam::Quat::IDENTITY,
- glam::Vec3::new(npos.x, npos.y, 0.0),
- ),
- );
- unsafe {
- ctx.gl.active_texture(glow::TEXTURE0);
- ctx.gl.bind_texture(glow::TEXTURE_2D, Some(self.atlas.tex));
- ctx.gl.bind_vertex_array(Some(self.vao));
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(self.vertex_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ARRAY_BUFFER,
- std::slice::from_raw_parts(
- vertices.as_ptr() as _,
- vertices.len() * std::mem::size_of::<f32>() * 2,
- ),
- glow::STATIC_DRAW,
- );
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(self.texcoords_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ARRAY_BUFFER,
- std::slice::from_raw_parts(
- texcoords.as_ptr() as _,
- texcoords.len() * std::mem::size_of::<f32>() * 2,
- ),
- glow::STATIC_DRAW,
- );
- ctx.gl.bind_buffer(glow::ARRAY_BUFFER, Some(self.colors_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ARRAY_BUFFER,
- std::slice::from_raw_parts(
- colors.as_ptr() as _,
- colors.len() * std::mem::size_of::<f32>() * 3,
- ),
- glow::STATIC_DRAW,
- );
- ctx.gl.bind_buffer(glow::ELEMENT_ARRAY_BUFFER, Some(self.index_buf));
- ctx.gl.buffer_data_u8_slice(
- glow::ELEMENT_ARRAY_BUFFER,
- &index_bytes,
- glow::STATIC_DRAW,
- );
- ctx.gl.draw_elements(glow::TRIANGLES, indices.len() as _, glow::UNSIGNED_INT, 0);
- }
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-09 12:55:57 +0000