82 lines
2.2 KiB
Rust
82 lines
2.2 KiB
Rust
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use raw_window_handle::HasRawWindowHandle;
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use std::fmt::Debug;
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pub trait RenderTargetFrame: Debug {
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fn view(&self) -> &wgpu::TextureView;
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}
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pub trait RenderTarget: Debug {
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type Frame: RenderTargetFrame;
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fn resize(&mut self, device: &wgpu::Device, width: u32, height: u32);
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fn format(&self) -> wgpu::TextureFormat;
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fn width(&self) -> u32;
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fn height(&self) -> u32;
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fn get_next_texture(&mut self) -> Result<Self::Frame, wgpu::TimeOut>;
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}
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#[derive(Debug)]
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pub struct SwapChainTarget {
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window_surface: wgpu::Surface,
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swap_chain_desc: wgpu::SwapChainDescriptor,
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swap_chain: wgpu::SwapChain,
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}
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#[derive(Debug)]
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pub struct SwapChainTargetFrame(wgpu::SwapChainOutput);
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impl RenderTargetFrame for SwapChainTargetFrame {
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fn view(&self) -> &wgpu::TextureView {
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&self.0.view
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}
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}
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impl SwapChainTarget {
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pub fn new<W: HasRawWindowHandle>(window: &W, size: (u32, u32), device: &wgpu::Device) -> Self {
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let window_surface = wgpu::Surface::create(window);
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let swap_chain_desc = wgpu::SwapChainDescriptor {
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usage: wgpu::TextureUsage::OUTPUT_ATTACHMENT,
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format: wgpu::TextureFormat::Bgra8Unorm,
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width: size.0,
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height: size.1,
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present_mode: wgpu::PresentMode::Mailbox,
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};
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let swap_chain = device.create_swap_chain(&window_surface, &swap_chain_desc);
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Self {
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window_surface,
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swap_chain_desc,
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swap_chain,
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}
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}
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}
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impl RenderTarget for SwapChainTarget {
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type Frame = SwapChainTargetFrame;
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fn resize(&mut self, device: &wgpu::Device, width: u32, height: u32) {
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self.swap_chain_desc.width = width;
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self.swap_chain_desc.height = height;
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self.swap_chain = device.create_swap_chain(&self.window_surface, &self.swap_chain_desc);
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}
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fn format(&self) -> wgpu::TextureFormat {
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self.swap_chain_desc.format
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}
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fn width(&self) -> u32 {
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self.swap_chain_desc.width
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}
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fn height(&self) -> u32 {
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self.swap_chain_desc.height
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}
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fn get_next_texture(&mut self) -> Result<Self::Frame, wgpu::TimeOut> {
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self.swap_chain.get_next_texture().map(SwapChainTargetFrame)
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}
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}
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