Merge pull request #2382 from iced-rs/wgpu/better-architecture

Improved architecture for `iced_wgpu` and `iced_tiny_skia`

examples/custom_shader/src/scene.rs

@@ -9,8 +9,8 @@ use pipeline::cube::{self, Cube};
 
 use iced::mouse;
 use iced::time::Duration;
-use iced::widget::shader;
-use iced::{Color, Rectangle, Size};
+use iced::widget::shader::{self, Viewport};
+use iced::{Color, Rectangle};
 
 use glam::Vec3;
 use rand::Rng;
@@ -130,25 +130,29 @@ impl Primitive {
 impl shader::Primitive for Primitive {
     fn prepare(
         &self,
-        format: wgpu::TextureFormat,
         device: &wgpu::Device,
         queue: &wgpu::Queue,
-        _bounds: Rectangle,
-        target_size: Size<u32>,
-        _scale_factor: f32,
+        format: wgpu::TextureFormat,
         storage: &mut shader::Storage,
+        _bounds: &Rectangle,
+        viewport: &Viewport,
     ) {
         if !storage.has::<Pipeline>() {
-            storage.store(Pipeline::new(device, queue, format, target_size));
+            storage.store(Pipeline::new(
+                device,
+                queue,
+                format,
+                viewport.physical_size(),
+            ));
         }
 
         let pipeline = storage.get_mut::<Pipeline>().unwrap();
 
-        //upload data to GPU
+        // Upload data to GPU
         pipeline.update(
             device,
             queue,
-            target_size,
+            viewport.physical_size(),
             &self.uniforms,
             self.cubes.len(),
             &self.cubes,
@@ -157,20 +161,19 @@ impl shader::Primitive for Primitive {
 
     fn render(
         &self,
+        encoder: &mut wgpu::CommandEncoder,
         storage: &shader::Storage,
         target: &wgpu::TextureView,
-        _target_size: Size<u32>,
-        viewport: Rectangle<u32>,
-        encoder: &mut wgpu::CommandEncoder,
+        clip_bounds: &Rectangle<u32>,
     ) {
-        //at this point our pipeline should always be initialized
+        // At this point our pipeline should always be initialized
         let pipeline = storage.get::<Pipeline>().unwrap();
 
-        //render primitive
+        // Render primitive
         pipeline.render(
             target,
             encoder,
-            viewport,
+            *clip_bounds,
             self.cubes.len() as u32,
             self.show_depth_buffer,
         );

examples/geometry/src/main.rs

@@ -6,7 +6,10 @@ mod rainbow {
     use iced::advanced::renderer;
     use iced::advanced::widget::{self, Widget};
     use iced::mouse;
-    use iced::{Element, Length, Rectangle, Renderer, Size, Theme, Vector};
+    use iced::{
+        Element, Length, Rectangle, Renderer, Size, Theme, Transformation,
+        Vector,
+    };
 
     #[derive(Debug, Clone, Copy, Default)]
     pub struct Rainbow;
@@ -79,7 +82,6 @@ mod rainbow {
             let posn_l = [0.0, bounds.height / 2.0];
 
             let mesh = Mesh::Solid {
-                size: bounds.size(),
                 buffers: mesh::Indexed {
                     vertices: vec![
                         SolidVertex2D {
@@ -130,6 +132,8 @@ mod rainbow {
                         0, 8, 1, // L
                     ],
                 },
+                transformation: Transformation::IDENTITY,
+                clip_bounds: Rectangle::INFINITE,
             };
 
             renderer.with_translation(

examples/integration/src/main.rs

@@ -5,7 +5,7 @@ use controls::Controls;
 use scene::Scene;
 
 use iced_wgpu::graphics::Viewport;
-use iced_wgpu::{wgpu, Backend, Renderer, Settings};
+use iced_wgpu::{wgpu, Engine, Renderer};
 use iced_winit::conversion;
 use iced_winit::core::mouse;
 use iced_winit::core::renderer;
@@ -155,11 +155,9 @@ pub fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // Initialize iced
     let mut debug = Debug::new();
-    let mut renderer = Renderer::new(
-        Backend::new(&adapter, &device, &queue, Settings::default(), format),
-        Font::default(),
-        Pixels(16.0),
-    );
+    let mut engine = Engine::new(&adapter, &device, &queue, format, None);
+    let mut renderer =
+        Renderer::new(&engine, Font::default(), Pixels::from(16));
 
     let mut state = program::State::new(
         controls,
@@ -228,19 +226,17 @@ pub fn main() -> Result<(), Box<dyn std::error::Error>> {
                         }
 
                         // And then iced on top
-                        renderer.with_primitives(|backend, primitive| {
-                            backend.present(
-                                &device,
-                                &queue,
-                                &mut encoder,
-                                None,
-                                frame.texture.format(),
-                                &view,
-                                primitive,
-                                &viewport,
-                                &debug.overlay(),
-                            );
-                        });
+                        renderer.present(
+                            &mut engine,
+                            &device,
+                            &queue,
+                            &mut encoder,
+                            None,
+                            frame.texture.format(),
+                            &view,
+                            &viewport,
+                            &debug.overlay(),
+                        );
 
                         // Then we submit the work
                         queue.submit(Some(encoder.finish()));