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[rs] Improve hello-triangle docs

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This commit is contained in:
Gabriel Majeri
2020-06-27 19:59:22 +03:00
parent e2d072fb59
commit f0f481bbda
1 changed files with 11 additions and 10 deletions
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21
wgpu/examples/hello-triangle/main.rs
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@@ -12,13 +12,15 @@ async fn run(event_loop: EventLoop<()>, window: Window, swapchain_format: wgpu::
.request_adapter(
&wgpu::RequestAdapterOptions {
power_preference: wgpu::PowerPreference::Default,
// Request an adapter which can render to our surface
compatible_surface: Some(&surface),
},
wgpu::UnsafeFeatures::disallow(),
)
.await
.unwrap();
.expect("Failed to find an appropiate adapter");
// Create the logical device and command queue
let (device, queue) = adapter
.request_device(
&wgpu::DeviceDescriptor {
@@ -29,8 +31,9 @@ async fn run(event_loop: EventLoop<()>, window: Window, swapchain_format: wgpu::
None,
)
.await
.unwrap();
.expect("Failed to create device");
// Load the shaders from disk
let vs_module = device.create_shader_module(wgpu::include_spirv!("shader.vert.spv"));
let fs_module = device.create_shader_module(wgpu::include_spirv!("shader.frag.spv"));
@@ -48,13 +51,8 @@ async fn run(event_loop: EventLoop<()>, window: Window, swapchain_format: wgpu::
module: &fs_module,
entry_point: "main",
}),
rasterization_state: Some(wgpu::RasterizationStateDescriptor {
front_face: wgpu::FrontFace::Ccw,
cull_mode: wgpu::CullMode::None,
depth_bias: 0,
depth_bias_slope_scale: 0.0,
depth_bias_clamp: 0.0,
}),
// Use the default rasterizer state: no culling, no depth bias
rasterization_state: None,
primitive_topology: wgpu::PrimitiveTopology::TriangleList,
color_states: &[wgpu::ColorStateDescriptor {
format: swapchain_format,
@@ -83,7 +81,9 @@ async fn run(event_loop: EventLoop<()>, window: Window, swapchain_format: wgpu::
let mut swap_chain = device.create_swap_chain(&surface, &sc_desc);
event_loop.run(move |event, _, control_flow| {
// force ownership by the closure
// Have the closure take ownership of the resources.
// `event_loop.run` never returns, therefore we must do this to ensure
// the resources are properly cleaned up.
let _ = (
&instance,
&adapter,
@@ -98,6 +98,7 @@ async fn run(event_loop: EventLoop<()>, window: Window, swapchain_format: wgpu::
event: WindowEvent::Resized(size),
..
} => {
// Recreate the swap chain with the new size
sc_desc.width = size.width;
sc_desc.height = size.height;
swap_chain = device.create_swap_chain(&surface, &sc_desc);