Precursor to triangle in editor

Cargo.lock

@@ -103,6 +103,16 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
 
+[[package]]
+name = "bincode"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5753e2a71534719bf3f4e57006c3a4f0d2c672a4b676eec84161f763eca87dbf"
+dependencies = [
+ "byteorder",
+ "serde",
+]
+
 [[package]]
 name = "bitflags"
 version = "1.2.1"
@@ -1812,6 +1822,7 @@ dependencies = [
 name = "roc_editor"
 version = "0.1.0"
 dependencies = [
+ "bincode",
  "bumpalo",
  "gfx-backend-dx12",
  "gfx-backend-metal",
@@ -1844,6 +1855,7 @@ dependencies = [
  "roc_types",
  "roc_unify",
  "roc_uniq",
+ "serde",
  "target-lexicon",
  "tokio",
  "winit",
@@ -2183,6 +2195,9 @@ name = "serde"
 version = "1.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "36df6ac6412072f67cf767ebbde4133a5b2e88e76dc6187fa7104cd16f783399"
+dependencies = [
+ "serde_derive",
+]
 
 [[package]]
 name = "serde_derive"

editor/Cargo.toml

@@ -51,6 +51,9 @@ target-lexicon = "0.10"
 winit = "0.22"
 image = "0.23"
 gfx-hal = "0.5"
+glsl-to-spirv = "0.1"
+bincode = "1.2"
+serde = { version = "1.0", features = ["derive"] }
 
 [target.'cfg(target_os = "macos")'.dependencies.backend]
 package = "gfx-backend-metal"
@@ -73,4 +76,3 @@ maplit = "1.0.1"
 indoc = "0.3.3"
 quickcheck = "0.8"
 quickcheck_macros = "0.8"
-

editor/shaders/triangle.frag

@@ -0,0 +1,8 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout(location = 0) out vec4 fragment_color;
+
+void main() {
+    fragment_color = vec4(0.5, 0.5, 1.0, 1.0);
+}

editor/shaders/triangle.vert

@@ -0,0 +1,15 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+void main() {
+    vec2 position;
+    if (gl_VertexIndex == 0) {
+        position = vec2(0.0, -0.5);
+    } else if (gl_VertexIndex == 1) {
+        position = vec2(-0.5, 0.5);
+    } else if (gl_VertexIndex == 2) {
+        position = vec2(0.5, 0.5);
+    }
+
+    gl_Position = vec4(position, 0.0, 1.0);
+}

editor/src/lib.rs

@@ -1,4 +1,11 @@
+use gfx_hal::{
+    device::Device,
+    window::{Extent2D, PresentationSurface, Surface},
+    Instance,
+};
+use glsl_to_spirv::ShaderType;
 use std::io;
+use std::mem::ManuallyDrop;
 use std::path::Path;
 
 /// The editor is actually launched from the CLI if you pass it zero arguments,
@@ -18,10 +25,38 @@ use winit::{
 };
 
 fn run_event_loop() {
+    // TODO do a better window size
+    const WINDOW_SIZE: [u32; 2] = [512, 512];
+
     let event_loop = EventLoop::new();
-    let window = WindowBuilder::new().build(&event_loop).unwrap();
+
+    let (logical_window_size, physical_window_size) = {
+        use winit::dpi::{LogicalSize, PhysicalSize};
+
+        let dpi = event_loop.primary_monitor().scale_factor();
+        let logical: LogicalSize<u32> = WINDOW_SIZE.into();
+        let physical: PhysicalSize<u32> = logical.to_physical(dpi);
+
+        (logical, physical)
+    };
+
+    let mut surface_extent = Extent2D {
+        width: physical_window_size.width,
+        height: physical_window_size.height,
+    };
+
+    let window = WindowBuilder::new()
+        .with_title("roc")
+        .with_inner_size(logical_window_size)
+        .build(&event_loop)
+        .unwrap();
+
+    let mut should_configure_swapchain = true;
 
     event_loop.run(move |event, _, control_flow| {
+        use winit::event::{Event, WindowEvent};
+        use winit::event_loop::ControlFlow;
+
         // TODO try ControlFlow::Poll and see if it affects input latency.
         // Otherwise, this seems like a better default for minimizing idle
         // CPU usage and battry drain. (Might want to switch to Poll whenever
@@ -30,12 +65,29 @@ fn run_event_loop() {
 
         match event {
             Event::WindowEvent {
-                event: WindowEvent::CloseRequested,
+                event: window_event,
                 ..
-            } => {
+            } => match window_event {
+                WindowEvent::CloseRequested => {
                     println!("✈️ Thank you for flying Roc Airlines!");
                     *control_flow = ControlFlow::Exit
                 }
+                WindowEvent::Resized(dims) => {
+                    surface_extent = Extent2D {
+                        width: dims.width,
+                        height: dims.height,
+                    };
+                    should_configure_swapchain = true;
+                }
+                WindowEvent::ScaleFactorChanged { new_inner_size, .. } => {
+                    surface_extent = Extent2D {
+                        width: new_inner_size.width,
+                        height: new_inner_size.height,
+                    };
+                    should_configure_swapchain = true;
+                }
+                _ => (),
+            },
             Event::MainEventsCleared => window.request_redraw(),
             Event::RedrawRequested(_) => {
                 // TODO render the editor