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|
pub struct Frame<'a> {
pub gpu: &'a mut Gpu,
pub encoder: wgpu::CommandEncoder,
pub output: wgpu::SurfaceTexture,
pub view: wgpu::TextureView,
}
impl<'a> Frame<'a> {
pub fn new(gpu: &'a mut Gpu) -> Result<Self, wgpu::SurfaceError> {
let output = gpu.surface.get_current_texture()?;
let view = output
.texture
.create_view(&wgpu::TextureViewDescriptor::default());
let encoder = gpu
.device
.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
Ok(Self {
gpu,
encoder,
output,
view,
})
}
pub fn pass(&mut self) -> wgpu::RenderPass {
self.encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
label: None,
color_attachments: &[Some(wgpu::RenderPassColorAttachment {
view: &self.view,
resolve_target: None,
ops: wgpu::Operations {
load: wgpu::LoadOp::Clear(wgpu::Color {
r: 0x87 as f64 / 255.0,
g: 0xCE as f64 / 255.0,
b: 0xEB as f64 / 255.0,
a: 1.0,
}),
store: true,
},
})],
depth_stencil_attachment: Some(wgpu::RenderPassDepthStencilAttachment {
view: &self.gpu.depth_texture,
depth_ops: Some(wgpu::Operations {
load: wgpu::LoadOp::Clear(1.0),
store: true,
}),
stencil_ops: None,
}),
})
}
pub fn finish(self) {
self.gpu.queue.submit(Some(self.encoder.finish()));
self.output.present();
}
}
pub struct Gpu {
pub surface: wgpu::Surface,
pub device: wgpu::Device,
pub queue: wgpu::Queue,
pub config: wgpu::SurfaceConfiguration,
pub depth_texture: wgpu::TextureView,
}
impl Gpu {
pub async fn new(window: &winit::window::Window) -> Self {
let size = window.inner_size();
let instance = wgpu::Instance::new(wgpu::InstanceDescriptor {
backends: wgpu::Backends::all(),
dx12_shader_compiler: Default::default(),
});
let surface = unsafe { instance.create_surface(window) }.unwrap();
let adapter = instance
.request_adapter(&wgpu::RequestAdapterOptions {
power_preference: wgpu::PowerPreference::default(),
compatible_surface: Some(&surface),
force_fallback_adapter: false,
})
.await
.unwrap();
let (device, queue) = adapter
.request_device(
&wgpu::DeviceDescriptor {
features: wgpu::Features::empty(),
limits: Default::default(),
label: None,
},
None,
)
.await
.unwrap();
let surface_caps = surface.get_capabilities(&adapter);
let surface_format = surface_caps
.formats
.iter()
.copied()
.find(|f| f.describe().srgb)
.unwrap_or(surface_caps.formats[0]);
let config = wgpu::SurfaceConfiguration {
usage: wgpu::TextureUsages::RENDER_ATTACHMENT,
format: surface_format,
width: size.width,
height: size.height,
present_mode: surface_caps.present_modes[0],
alpha_mode: surface_caps.alpha_modes[0],
view_formats: vec![],
};
let depth_texture = Self::create_depth_texture(&config, &device);
let mut state = Self {
surface,
device,
queue,
config,
depth_texture,
};
state.resize(size);
state
}
pub fn create_depth_texture(
config: &wgpu::SurfaceConfiguration,
device: &wgpu::Device,
) -> wgpu::TextureView {
device
.create_texture(&wgpu::TextureDescriptor {
label: Some("depth texture"),
size: wgpu::Extent3d {
width: config.width,
height: config.height,
depth_or_array_layers: 1,
},
mip_level_count: 1,
sample_count: 1,
dimension: wgpu::TextureDimension::D2,
format: wgpu::TextureFormat::Depth32Float,
usage: wgpu::TextureUsages::RENDER_ATTACHMENT
| wgpu::TextureUsages::TEXTURE_BINDING,
view_formats: &[],
})
.create_view(&wgpu::TextureViewDescriptor::default())
}
pub fn resize(&mut self, size: winit::dpi::PhysicalSize<u32>) {
if size.width > 0 && size.height > 0 {
self.config.width = size.width;
self.config.height = size.height;
self.configure_surface();
self.depth_texture = Self::create_depth_texture(&self.config, &self.device);
}
}
pub fn configure_surface(&mut self) {
self.surface.configure(&self.device, &self.config);
}
}
|
