add bind_texture field to UiVertex

Cargo.lock

@@ -1034,19 +1034,28 @@ version = "0.0.0"
 dependencies = [
  "fontdue",
  "glam",
- "glium",
  "hashbrown",
- "kubi-logging",
- "kubi-ui-glium",
  "log",
  "nohash-hasher",
  "rect_packer",
+]
+
+[[package]]
+name = "kubi-ui-examples"
+version = "0.0.0"
+dependencies = [
+ "glam",
+ "glium",
+ "kubi-logging",
+ "kubi-ui",
+ "kubi-ui-glium",
+ "log",
  "winit",
 ]
 
 [[package]]
 name = "kubi-ui-glium"
-version = "0.1.0"
+version = "0.0.0"
 dependencies = [
  "glam",
  "glium",

Cargo.toml

@@ -1,5 +1,14 @@
 [workspace]
-members = ["kubi", "kubi-server", "kubi-shared", "kubi-logging", "kubi-pool", "kubi-ui", "kubi-ui-glium"]
+members = [
+  "kubi",
+  "kubi-server",
+  "kubi-shared",
+  "kubi-logging",
+  "kubi-pool",
+  "kubi-ui",
+  "kubi-ui-glium",
+  "kubi-ui-examples"
+]
 default-members = ["kubi"]
 resolver = "2"
 

kubi-ui-examples/Cargo.toml

@@ -0,0 +1,16 @@
+#created as a workaround for rust-analyzer dependency cycle (which should be allowed)
+
+[package]
+name = "kubi-ui-examples"
+version = "0.0.0"
+edition = "2021"
+publish = false
+
+[dev-dependencies]
+kubi-ui = { path = "../kubi-ui" }
+kubi-ui-glium = { path = "../kubi-ui-glium" }
+kubi-logging = { path = "../kubi-logging" }
+glium = { git = "https://github.com/glium/glium", rev = "968fc92378caf" }
+winit = "0.29"
+glam = "0.24"
+log = "0.4"

kubi-ui-examples/examples/stress.rs

@@ -79,10 +79,7 @@ fn main() {
 
         kui.end();
 
-        let plan = kui.draw_plan();
-        if plan.0 {
-          backend.update(plan.1);
-        }
+        backend.update(&kui);
         backend.draw(&mut frame, resolution);
 
         frame.finish().unwrap();

kubi-ui-examples/examples/test.rs

@@ -15,7 +15,7 @@ use kubi_ui::{
   },
   interaction::IntoInteractable,
   UiSize,
-  UiDirection,
+  UiDirection, IfModified,
 };
 use kubi_ui_glium::GliumUiRenderer;
 
@@ -135,10 +135,7 @@ fn main() {
 
         kui.end();
 
-        let plan = kui.draw_plan();
-        if plan.0 {
-          backend.update(plan.1);
-        }
+        backend.update(&kui);
         backend.draw(&mut frame, resolution);
 
         frame.finish().unwrap();

kubi-ui-glium/Cargo.toml

@@ -1,11 +1,12 @@
 [package]
 name = "kubi-ui-glium"
-version = "0.1.0"
+version = "0.0.0"
 edition = "2021"
 publish = false
 
 [dependencies]
-glium = { git = "https://github.com/glium/glium", rev = "968fc92378caf" }
 kubi-ui = { path = "../kubi-ui", default-features = false }
+#kubi-ui = { path = "../kubi-ui" }
+glium = { git = "https://github.com/glium/glium", rev = "968fc92378caf" }
 glam = "0.24"
 log = "0.4"

kubi-ui-glium/src/lib.rs

@@ -4,9 +4,13 @@ use glium::{
   Program, VertexBuffer, IndexBuffer,
   backend::Facade,
   index::PrimitiveType,
-  implement_vertex, uniform,
+  implement_vertex, uniform, texture::{SrgbTexture2d, RawImage2d},
+};
+use kubi_ui::{
+  KubiUi,
+  draw::{UiDrawPlan, UiVertex},
+  text::FontTextureInfo, IfModified,
 };
-use kubi_ui::draw::{UiDrawPlan, UiVertex};
 
 const VERTEX_SHADER: &str = include_str!("../shaders/vertex.vert");
 const FRAGMENT_SHADER: &str = include_str!("../shaders/fragment.frag");
@@ -114,13 +118,31 @@ impl GliumUiRenderer {
     }
   }
 
-  pub fn update(&mut self, plan: &UiDrawPlan) {
+  pub fn update_draw_plan(&mut self, plan: &UiDrawPlan) {
     assert!(plan.calls.len() == 1, "multiple draw calls not supported yet");
     let data_vtx = &plan.calls[0].vertices.iter().copied().map(Vertex::from).collect::<Vec<_>>();
     let data_idx = &plan.calls[0].indices;
     self.buffer.write_data(data_vtx, data_idx);
   }
 
+  pub fn update_font_texture(&mut self, font_texture: &FontTextureInfo) {
+    //HACK: get context from buffer
+    let ctx = self.buffer.index_buffer.get_context();
+    SrgbTexture2d::new(ctx, RawImage2d::from_raw_rgb(
+      font_texture.data.to_owned(),
+      (font_texture.size.x, font_texture.size.y)
+    )).unwrap();
+  }
+
+  pub fn update(&mut self, kui: &KubiUi) {
+    if let Some(plan) = kui.draw_plan().if_modified() {
+      self.update_draw_plan(plan);
+    }
+    if let Some(texture) = kui.font_texture().if_modified() {
+      self.update_font_texture(texture);
+    }
+  }
+
   pub fn draw(&self, frame: &mut glium::Frame, resolution: Vec2) {
     if self.buffer.is_empty() {
       return

kubi-ui/Cargo.toml

@@ -12,12 +12,6 @@ fontdue = "0.8"
 rect_packer = "0.2"
 log = "0.4"
 
-[dev-dependencies]
-kubi-logging = { path = "../kubi-logging" }
-kubi-ui-glium = { path = "../kubi-ui-glium" }
-glium = { git = "https://github.com/glium/glium", rev = "968fc92378caf" }
-winit = "0.29"
-
 [features]
 default = ["builtin_elements", "builtin_font"]
 builtin_font = []

kubi-ui/src/draw.rs

@@ -1,6 +1,7 @@
+use crate::IfModified;
+
 use std::borrow::Cow;
 use glam::{Vec2, Vec4, vec2};
-use crate::text::TextRenderer;
 
 #[derive(Clone, Debug, PartialEq)]
 pub enum UiDrawCommand {
@@ -37,6 +38,7 @@ pub struct UiDrawCommands {
 //   }
 // }
 
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub enum BindTexture {
   FontTexture,
   //UserDefined(usize),
@@ -47,7 +49,7 @@ pub struct UiVertex {
   pub position: Vec2,
   pub color: Vec4,
   pub uv: Vec2,
-  //pub texture: Option<NonZeroU16>,
+  pub bind_texture: Option<BindTexture>,
 }
 
 #[derive(Default)]
@@ -62,7 +64,7 @@ pub struct UiDrawPlan {
 }
 
 impl UiDrawPlan {
-  pub fn build(calls: &UiDrawCommands, tr: &mut TextRenderer) -> Self {
+  pub fn build(calls: &UiDrawCommands) -> Self {
     let mut call = UiDrawCall::default();
     for command in &calls.commands {
       match command {
@@ -74,21 +76,25 @@ impl UiDrawPlan {
               position: *position,
               color: *color,
               uv: vec2(0.0, 0.0),
+              bind_texture: None,
             },
             UiVertex {
               position: *position + Vec2::new(size.x, 0.0),
               color: *color,
               uv: vec2(1.0, 0.0),
+              bind_texture: None,
             },
             UiVertex {
               position: *position + *size,
               color: *color,
               uv: vec2(1.0, 1.0),
+              bind_texture: None,
             },
             UiVertex {
               position: *position + Vec2::new(0.0, size.y),
               color: *color,
               uv: vec2(0.0, 1.0),
+              bind_texture: None,
             },
           ]);
         },
@@ -102,3 +108,12 @@ impl UiDrawPlan {
     }
   }
 }
+
+impl IfModified<UiDrawPlan> for (bool, &UiDrawPlan) {
+  fn if_modified(&self) -> Option<&UiDrawPlan> {
+    match self.0 {
+      true => Some(self.1),
+      false => None,
+    }
+  }
+}

kubi-ui/src/lib.rs

@@ -13,37 +13,41 @@ use element::UiElement;
 use state::StateRepo;
 use event::UiEvent;
 use draw::{UiDrawCommands, UiDrawPlan};
-use text::TextRenderer;
+use text::{TextRenderer, FontTextureInfo};
 
 // pub struct ElementContext<'a> {
 //   pub state: &'a mut StateRepo,
 //   pub draw: &'a mut UiDrawCommands,
 //   pub text: &'a mut TextRenderer,
 // }
+pub trait IfModified<T> {
+  fn if_modified(&self) -> Option<&T>;
+}
 
 pub struct KubiUi {
-  mouse_position: Vec2,
+  //mouse_position: Vec2,
   stateful_state: StateRepo,
-  event_queue: VecDeque<UiEvent>,
+  //event_queue: VecDeque<UiEvent>,
   prev_draw_commands: UiDrawCommands,
   draw_commands: UiDrawCommands,
   draw_plan: UiDrawPlan,
   draw_plan_modified: bool,
-  font_renderer: TextRenderer,
+  text_renderer: TextRenderer,
 }
 
 impl KubiUi {
   pub fn new() -> Self {
     KubiUi {
-      mouse_position: Vec2::ZERO,
+      //mouse_position: Vec2::ZERO,
       stateful_state: StateRepo::default(),
-      event_queue: VecDeque::new(),
+      //event_queue: VecDeque::new(),
       // root_elements: Vec::new(),
       prev_draw_commands: UiDrawCommands::default(),
       draw_commands: UiDrawCommands::default(),
       draw_plan: UiDrawPlan::default(),
       draw_plan_modified: false,
-      font_renderer: TextRenderer::default(),
+      // ftm: FontTextureManager::default(),
+      text_renderer: TextRenderer::new(),
     }
   }
 
@@ -61,19 +65,24 @@ impl KubiUi {
     std::mem::swap(&mut self.prev_draw_commands, &mut self.draw_commands);
     self.draw_plan_modified = false;
     self.draw_commands.commands.clear();
+    self.text_renderer.reset_frame();
   }
 
   pub fn end(&mut self) {
     if self.draw_commands.commands == self.prev_draw_commands.commands {
       return
     }
-    self.draw_plan = UiDrawPlan::build(&self.draw_commands, &mut self.font_renderer);
+    self.draw_plan = UiDrawPlan::build(&self.draw_commands);
     self.draw_plan_modified = true;
   }
 
   pub fn draw_plan(&self) -> (bool, &UiDrawPlan) {
     (self.draw_plan_modified, &self.draw_plan)
   }
+
+  pub fn font_texture(&self) -> FontTextureInfo {
+    self.text_renderer.font_texture()
+  }
 }
 
 impl Default for KubiUi {

kubi-ui/src/text.rs

@@ -1,90 +1,41 @@
 use std::sync::Arc;
-use fontdue::{Font, Metrics};
-use glam::{IVec2, UVec2, uvec2, ivec2};
-use hashbrown::HashMap;
-use rect_packer::DensePacker;
 
-#[cfg(feature = "builtin_font")]
-const BIN_FONT: &[u8] = include_bytes!("../assets/font/ProggyTiny.ttf");
+mod font;
+mod ftm;
 
-#[derive(Clone, Copy, PartialEq, Eq, Hash)]
-pub struct FontHandle(pub(crate) usize);
-
-#[cfg(feature = "builtin_font")]
-pub const BUILTIN_FONT: FontHandle = FontHandle(0);
-
-#[derive(PartialEq, Eq, Hash)]
-struct GlyphCacheKey {
-  font_index: usize,
-  character: char,
-  size: u8,
-}
-
-struct GlyphCacheEntry {
-  pub data: Vec<u8>,
-  pub metrics: Metrics,
-  pub texture_position: IVec2,
-  pub texture_size: UVec2,
-}
+use font::FontManager;
+pub use font::FontHandle;
+use ftm::FontTextureManager;
+pub use ftm::{FontTextureInfo, GlyphCacheEntry};
 
 pub struct TextRenderer {
-  fonts: Vec<Font>,
-  glyph_cache: HashMap<GlyphCacheKey, Arc<GlyphCacheEntry>>,
-  packer: DensePacker,
-  font_texture: Vec<u8>,
-  font_texture_size: UVec2,
+  fm: FontManager,
+  ftm: FontTextureManager,
 }
 
 impl TextRenderer {
-  pub fn new(size: UVec2) -> Self {
-    let mut renderer = TextRenderer {
-      fonts: Vec::new(),
-      glyph_cache: HashMap::new(),
-      packer: DensePacker::new(size.x as i32, size.y as i32),
-      font_texture: vec![0; (size.x * size.y) as usize],
-      font_texture_size: size,
-    };
-    #[cfg(feature = "builtin_font")]
-    {
-      let font = Font::from_bytes(BIN_FONT, fontdue::FontSettings::default()).unwrap();
-      renderer.add_font(font);
+  pub fn new() -> Self {
+    Self {
+      fm: FontManager::new(),
+      ftm: FontTextureManager::default(),
     }
-    renderer
   }
 
-  /// Add a (fontdue) font to the renderer.
-  pub fn add_font(&mut self, font: Font) -> FontHandle {
-    self.fonts.push(font);
-    FontHandle(self.fonts.len() - 1)
+  pub fn reset_frame(&mut self) {
+    self.ftm.reset_modified();
   }
 
-  /// Either looks up the glyph in the cache or renders it and adds it to the cache.
-  pub fn glyph(&mut self, font: FontHandle, character: char, size: u8) -> Arc<GlyphCacheEntry> {
-    let key = GlyphCacheKey {
-      font_index: font.0,
-      character,
-      size,
-    };
-    if let Some(entry) = self.glyph_cache.get(&key) {
-      return Arc::clone(entry);
-    }
-    let font = &self.fonts[key.font_index];
-    let (metrics, bitmap) = font.rasterize(character, size as f32);
-    let texture_position = self.packer.pack(metrics.width as i32, metrics.height as i32, false).unwrap();
-    let texture_size = uvec2(metrics.width as u32, metrics.height as u32);
-    let entry = Arc::new(GlyphCacheEntry {
-      data: bitmap,
-      metrics,
-      texture_position: ivec2(texture_position.x, texture_position.y),
-      texture_size,
-    });
-    self.glyph_cache.insert_unique_unchecked(key, Arc::clone(&entry));
-    entry
+  pub fn font_texture(&self) -> FontTextureInfo {
+    self.ftm.info()
+  }
+
+  pub fn glyph(&mut self, font_handle: FontHandle, character: char, size: u8) -> Arc<GlyphCacheEntry> {
+    self.ftm.glyph(&self.fm, font_handle, character, size)
   }
 }
 
 impl Default for TextRenderer {
   fn default() -> Self {
-    Self::new(uvec2(2048, 2048))
+    Self::new()
   }
 }

kubi-ui/src/text/font.rs

@@ -0,0 +1,44 @@
+use fontdue::Font;
+
+#[cfg(feature = "builtin_font")]
+const BIN_FONT: &[u8] = include_bytes!("../../assets/font/ProggyTiny.ttf");
+
+#[derive(Clone, Copy, PartialEq, Eq, Hash)]
+pub struct FontHandle(pub(crate) usize);
+
+#[cfg(feature = "builtin_font")]
+pub const BUILTIN_FONT: FontHandle = FontHandle(0);
+
+pub struct FontManager {
+  fonts: Vec<Font>,
+}
+
+impl FontManager {
+  pub fn new() -> Self {
+    let mut this = Self {
+      fonts: Vec::new(),
+    };
+    #[cfg(feature = "builtin_font")]
+    {
+      let font = Font::from_bytes(BIN_FONT, fontdue::FontSettings::default()).unwrap();
+      this.add_font(font);
+    };
+    this
+  }
+
+  /// Add a (fontdue) font to the renderer.
+  pub fn add_font(&mut self, font: Font) -> FontHandle {
+    self.fonts.push(font);
+    FontHandle(self.fonts.len() - 1)
+  }
+
+  pub fn get(&self, handle: FontHandle) -> Option<&Font> {
+    self.fonts.get(handle.0)
+  }
+}
+
+impl Default for FontManager {
+  fn default() -> Self {
+    Self::new()
+  }
+}

kubi-ui/src/text/ftm.rs

@@ -0,0 +1,134 @@
+use std::sync::Arc;
+use fontdue::{Font, Metrics};
+use glam::{IVec2, UVec2, uvec2, ivec2};
+use hashbrown::HashMap;
+use rect_packer::DensePacker;
+
+use crate::IfModified;
+
+use super::font::{FontHandle, FontManager};
+
+
+
+#[derive(PartialEq, Eq, Hash)]
+struct GlyphCacheKey {
+  font_index: usize,
+  character: char,
+  size: u8,
+}
+
+pub struct GlyphCacheEntry {
+  pub data: Vec<u8>,
+  pub metrics: Metrics,
+  pub position: IVec2,
+  pub size: UVec2,
+}
+
+#[derive(Clone, Copy, Debug)]
+pub struct FontTextureInfo<'a> {
+  pub modified: bool,
+  pub data: &'a [u8],
+  pub size: UVec2,
+}
+
+impl<'a> IfModified<FontTextureInfo<'a>> for FontTextureInfo<'a> {
+  fn if_modified(&self) -> Option<&Self> {
+    match self.modified {
+      true => Some(self),
+      false => None,
+    }
+  }
+}
+
+// impl<'a> FontTextureInfo<'a> {
+//   fn if_modified(&self) -> Option<Self> {
+//     match self.modified {
+//       true => Some(*self),
+//       false => None,
+//     }
+//   }
+// }
+
+pub struct FontTextureManager {
+  glyph_cache: HashMap<GlyphCacheKey, Arc<GlyphCacheEntry>>,
+  packer: DensePacker,
+  font_texture: Vec<u8>,
+  font_texture_size: UVec2,
+  modified: bool,
+}
+
+impl FontTextureManager {
+  pub fn new(size: UVec2) -> Self {
+    FontTextureManager {
+      glyph_cache: HashMap::new(),
+      packer: DensePacker::new(size.x as i32, size.y as i32),
+      font_texture: vec![0; (size.x * size.y) as usize],
+      font_texture_size: size,
+      modified: false,
+    }
+  }
+
+  pub fn reset_modified(&mut self) {
+    self.modified = false;
+  }
+
+  pub fn info(&self) -> FontTextureInfo {
+    FontTextureInfo {
+      modified: self.modified,
+      data: &self.font_texture,
+      size: self.font_texture_size,
+    }
+  }
+
+  /// Either looks up the glyph in the cache or renders it and adds it to the cache.
+  fn glyph_allocate(&mut self, font_manager: &FontManager, font_handle: FontHandle, character: char, size: u8) -> (bool, Arc<GlyphCacheEntry>) {
+    let key = GlyphCacheKey {
+      font_index: font_handle.0,
+      character,
+      size,
+    };
+    if let Some(entry) = self.glyph_cache.get(&key) {
+      return (false, Arc::clone(entry));
+    }
+    let font = font_manager.get(font_handle).unwrap();
+    let (metrics, bitmap) = font.rasterize(character, size as f32);
+    let texture_position = self.packer.pack(metrics.width as i32, metrics.height as i32, false).unwrap();
+    let texture_size = uvec2(metrics.width as u32, metrics.height as u32);
+    let entry = Arc::new(GlyphCacheEntry {
+      data: bitmap,
+      metrics,
+      position: ivec2(texture_position.x, texture_position.y),
+      size: texture_size,
+    });
+    self.glyph_cache.insert_unique_unchecked(key, Arc::clone(&entry));
+    (true, entry)
+  }
+
+  /// Place glyph onto the font texture.
+  fn glyph_place(&mut self, entry: &GlyphCacheEntry) {
+    let tex_size = self.font_texture_size;
+    let GlyphCacheEntry { size, position, .. } = entry;
+    for y in 0..size.y {
+      for x in 0..size.x {
+        let src = (size.x * y + x) as usize;
+        let dst = (tex_size.x * (y + position.y as u32) + (x + position.x as u32)) as usize;
+        self.font_texture[dst] = entry.data[src];
+      }
+    }
+  }
+
+  pub fn glyph(&mut self, font_manager: &FontManager, font_handle: FontHandle, character: char, size: u8) -> Arc<GlyphCacheEntry> {
+    let (is_new, glyph) = self.glyph_allocate(font_manager, font_handle, character, size);
+    if is_new {
+      self.glyph_place(&glyph);
+      self.modified = true;
+    }
+    glyph
+  }
+}
+
+impl Default for FontTextureManager {
+  fn default() -> Self {
+    Self::new(uvec2(2048, 2048))
+  }
+}

kubi/src/guiv2_integration.rs

@@ -31,10 +31,7 @@ pub fn kubi_ui_end(
   let ui: &mut UiState = &mut ui;
   let UiState { kui, renderer } = ui;
   kui.end();
-  let (upload_needed, plan) = kui.draw_plan();
-  if upload_needed {
-    renderer.update(plan);
-  }
+  renderer.update(kui);
 }
 
 pub fn kubi_ui_draw(