Selected Wgpu as rendering API

* adjusted API to better fit Wgpu's

src/canvas.rs

@@ -7,7 +7,8 @@ use crate::{
     io::{Key, Scroll},
     sprite::{Sprite, TextureSprite, TextSprite, ShapeSprite},
     texture::Texture,
-    utils::{Size, Pixel, Position},
+    utils::{Size, Pixel, Position, Color},
+    renderer::Renderer,
 };
 
 use std::{
@@ -24,13 +25,20 @@ pub trait Application {
 }
 
 //--Canvas struct-----------------------------------------------------------------------------------
-pub struct Canvas {}
+pub struct Canvas {
+    renderer: Renderer,
+    clear_color: Pixel,
+}
 
 impl Canvas {
 
-    pub fn create<W: HasRawWindowHandle>(_window: &W) -> Result<Canvas, &'static str> {
+    pub fn create<W: HasRawWindowHandle>(window: &W) -> Result<Canvas, &'static str> {
+
+        let renderer = Renderer::create(window)?;
 
         Ok(Self {
+            renderer,
+            clear_color: Color::WHITE,
         })
     }
 
@@ -63,16 +71,17 @@ impl Canvas {
     }
 
     //--Output functions--
-    pub fn draw<S: Sprite>(&mut self, _sprite: S) {
+    pub fn draw<S: Sprite>(&mut self, sprite: &S) {
-        unimplemented!();
+        //update texture
+        self.renderer.draw(sprite);
     }
 
-    pub fn set_clear_color(&mut self, _color: Pixel) {
+    pub fn set_clear_color(&mut self, color: Pixel) {
-        unimplemented!();
+        self.clear_color = color;
     }
 
     pub fn clear(&mut self) {
-        unimplemented!();
+        self.renderer.clear(&self.clear_color);
     }
 
     //--Input functions--
@@ -105,7 +114,7 @@ impl Canvas {
     }
 
     pub fn update(&mut self) {
-        //unimplemented!();
+        self.renderer.finish_frame();
     }
 }
 

src/lib.rs

@@ -9,15 +9,15 @@ pub mod shape;
 pub mod sprite;
 pub mod texture;
 pub mod utils;
+mod renderer;
 
 use utils::Size;
 
-pub fn run_vk_canvas<A: 'static + Application>(title: &'static str, size: Size, mut app: A) -> ! {
+pub fn run_canvas<A: 'static + Application>(title: &'static str, size: Size, mut app: A) -> ! {
     use winit::{
         event_loop::EventLoop,
         window::WindowBuilder,
     };
-
     // construct window
     let event_loop = EventLoop::new();
     let window = WindowBuilder::new()
@@ -109,10 +109,10 @@ mod tests {
     }
 
     #[test]
-    fn vk_create() {
+    fn run_no_app() {
         use crate::utils::Size;
 
-        crate::run_vk_canvas("vk_create", Size {w: 1280, h: 720}, TestApp {});
+        crate::run_canvas("vk_create", Size {w: 1280, h: 720}, TestApp {});
     }
 }
 

src/main.rs

@@ -42,69 +42,69 @@ impl Application for ExampleApp {
             shape::{Shape, Rectangle},
         };
 
-        //// inputs
+        // inputs
-        //if canvas.key_pressed(Key::A) {
+        if canvas.key_pressed(Key::A) {
-        //    unimplemented!();
+            unimplemented!();
-        //}
+        }
-        //
+        
-        //if canvas.key_released(Key::A) {
+        if canvas.key_released(Key::A) {
-        //    unimplemented!();
+            unimplemented!();
-        //}
+        }
-        //
+        
-        //match canvas.get_key_presses() {
+        match canvas.get_key_presses() {
-        //    Key::A => unimplemented!(),
+            Key::A => unimplemented!(),
-        //    _ => (),
+            _ => (),
-        //}
+        }
-        //
+        
-        //match canvas.get_key_releases() {
+        match canvas.get_key_releases() {
-        //    Key::A => unimplemented!(),
+            Key::A => unimplemented!(),
-        //    _ => (),
+            _ => (),
-        //}
+        }
 
-        //let _mouse = canvas.get_mouse_position();
+        let _mouse = canvas.get_mouse_position();
 
-        //// outputs
+        // outputs
-        //canvas.set_clear_color(Color::BLACK);
+        canvas.set_clear_color(Color::BLACK);
-        //canvas.clear();
+        canvas.clear();
 
-        //// white rectangle inset by one in the sprite
+        // white rectangle inset by one in the sprite
-        //let mut bas_sprite = canvas.create_shape_sprite();
+        let mut bas_sprite = canvas.create_shape_sprite();
-        //bas_sprite.set_shape(Shape::Rectangle (Rectangle {size: Size {w: 38, h: 38}}));
+        bas_sprite.set_shape(Shape::Rectangle (Rectangle {size: Size {w: 38, h: 38}}));
-        //bas_sprite.set_color(Color::WHITE);
+        bas_sprite.set_color(Color::WHITE);
-        //canvas.draw(bas_sprite);
+        canvas.draw(&bas_sprite);
 
-        //// 20 x 20 sprite of a picture
+        // 20 x 20 sprite of a picture
-        //let texture = canvas.create_texture_from_file(
+        let texture = canvas.create_texture_from_file(
-        //    Position {x: 0, y: 0}, 
+            Position {x: 0, y: 0}, 
-        //    "texture.png", 
+            "texture.png", 
-        //    Some(Color::WHITE)
+            Some(Color::WHITE)
-        //);
+        );
-        //let mut pix_sprite = canvas.create_texture_sprite(Size {w: 20, h: 20}, 1.0);
+        let mut pix_sprite = canvas.create_texture_sprite(Size {w: 20, h: 20}, 1.0);
-        //pix_sprite.set_texture(texture, Some(Position {x: 0, y: 0}));
+        pix_sprite.set_texture(texture, Some(Position {x: 0, y: 0}));
-        //canvas.draw(pix_sprite);
+        canvas.draw(&pix_sprite);
 
-        //// scaled sprite of a manually drawed texture
+        // scaled sprite of a manually drawed texture
-        //let texture = canvas.create_texture(Size {w: 20, h: 20}, Some(Color::WHITE));
+        let texture = canvas.create_texture(Size {w: 20, h: 20}, Some(Color::WHITE));
-        //texture.borrow_mut().set_pixel(Position {x: 0, y: 0}, Pixel::rgb(0, 255, 0));
+        texture.borrow_mut().set_pixel(Position {x: 0, y: 0}, Pixel::rgb(0, 255, 0));
-        //let _  = texture.borrow_mut().iter_mut(); //iterate on whole texture
+        let _  = texture.borrow_mut().iter_mut(); //iterate on whole texture
-        //pix_sprite = canvas.create_texture_sprite(Size {w: 20, h: 20}, 2.0);
+        pix_sprite = canvas.create_texture_sprite(Size {w: 20, h: 20}, 2.0);
-        //pix_sprite.set_texture(texture, None);
+        pix_sprite.set_texture(texture, None);
-        //let _  = pix_sprite.iter_mut(); //only iterate on the part used by the sprite
+        let _  = pix_sprite.iter_mut(); //only iterate on the part used by the sprite
-        //canvas.draw(pix_sprite);
+        canvas.draw(&pix_sprite);
 
-        //// floating text
+        // floating text
-        //let mut txt_sprite = canvas.create_text_sprite(Size {w: 10, h: 10}, 5.0);
+        let mut txt_sprite = canvas.create_text_sprite(Size {w: 10, h: 10}, 5.0);
-        //txt_sprite.set_text("text");
+        txt_sprite.set_text("text");
-        //txt_sprite.set_color(Color::BLACK);
+        txt_sprite.set_color(Color::BLACK);
 
-        //// generic operations
+        // generic operations
-        //txt_sprite.set_position(Position {x: 0, y: 0});
+        txt_sprite.set_position(Position {x: 0, y: 0});
-        //txt_sprite.set_rotation(50.0);
+        txt_sprite.set_rotation(50.0);
-        //txt_sprite.set_alpha(255);
+        txt_sprite.set_alpha(255);
-        //txt_sprite.set_scale(0.5);
+        txt_sprite.set_scale(0.5);
-        //canvas.draw(txt_sprite);
+        canvas.draw(&txt_sprite);
 
-        //canvas.update();
+        canvas.update();
 
         Ok(())
     }
@@ -115,6 +115,6 @@ fn main() -> Result<(), &'static str> {
 
     setup_logger()
         .map_err(|_| "Failed to setup logger")?;
-    canvas::run_vk_canvas("vk_example", Size {w: 1280, h: 720}, ExampleApp {});
+    canvas::run_canvas("vk_example", Size {w: 1280, h: 720}, ExampleApp {});
 }