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|
pub mod debug;
pub mod dec;
pub mod enc;
use std::mem::size_of;
use wgpu::{
Buffer, BufferUsages, CommandEncoder, Device, Extent3d, ImageCopyTexture, Origin3d, Queue,
Texture, TextureDescriptor, TextureDimension, TextureFormat, TextureUsages,
};
pub struct Params {
pub width: usize,
pub height: usize,
pub extent: Extent3d,
pub block_width: usize,
pub block_height: usize,
pub blocks_x: usize,
pub blocks_y: usize,
pub blocks: usize,
}
pub struct RoundParams {
pub swap: usize,
}
pub struct CommonBuffers {
textures: [Texture; 2],
offsets: Buffer,
offsets_download: Option<Buffer>,
debug_output: Option<Texture>,
texture_download: Option<Buffer>,
}
#[repr(C)]
pub struct BlockOffset {
score: f32,
_pad: u32,
offset: [f32; 2],
tint: [f32; 3],
}
impl CommonBuffers {
pub fn create(device: &Device, params: &Params) -> Self {
let textures = [(), ()].map(|_| {
device.create_texture(&TextureDescriptor {
label: None,
size: params.extent,
mip_level_count: 1,
sample_count: 1,
dimension: TextureDimension::D2,
format: TextureFormat::Bgra8Unorm,
usage: TextureUsages::TEXTURE_BINDING
| TextureUsages::STORAGE_BINDING
| TextureUsages::COPY_DST
| TextureUsages::COPY_SRC,
view_formats: &[],
})
});
let debug_output = Some(device.create_texture(&TextureDescriptor {
label: None,
size: params.extent,
mip_level_count: 1,
sample_count: 1,
dimension: TextureDimension::D2,
format: TextureFormat::Bgra8Unorm,
usage: TextureUsages::STORAGE_BINDING | TextureUsages::COPY_SRC,
view_formats: &[],
}));
let texture_download = Some(device.create_buffer(&wgpu::BufferDescriptor {
label: None,
size: (params.width * params.height * 4) as u64,
usage: BufferUsages::COPY_DST | BufferUsages::MAP_READ,
mapped_at_creation: false,
}));
let offsets = device.create_buffer(&wgpu::BufferDescriptor {
label: None,
size: (params.blocks * size_of::<BlockOffset>()) as u64,
usage: BufferUsages::COPY_DST | BufferUsages::STORAGE,
mapped_at_creation: false,
});
let offsets_download = Some(device.create_buffer(&wgpu::BufferDescriptor {
label: None,
size: (params.blocks * size_of::<BlockOffset>()) as u64,
usage: BufferUsages::COPY_DST | BufferUsages::MAP_READ,
mapped_at_creation: false,
}));
Self {
debug_output,
textures,
offsets_download,
offsets,
texture_download,
}
}
pub fn upload(&self, queue: &Queue, params: &Params, rp: &RoundParams, buffer: &[u8]) {
queue.write_texture(
ImageCopyTexture {
aspect: wgpu::TextureAspect::All,
mip_level: 0,
origin: Origin3d::ZERO,
texture: &self.textures[rp.swap],
},
buffer,
wgpu::ImageDataLayout {
offset: 0,
bytes_per_row: Some(params.extent.width * 4),
rows_per_image: Some(params.extent.height),
},
params.extent,
);
}
pub fn prepare_texture_download(
&self,
encoder: &mut CommandEncoder,
params: &Params,
rp: &RoundParams,
) {
encoder.copy_texture_to_buffer(
wgpu::ImageCopyTexture {
texture: &self.textures[rp.swap],
mip_level: 0,
origin: wgpu::Origin3d::ZERO,
aspect: wgpu::TextureAspect::All,
},
wgpu::ImageCopyBuffer {
buffer: self.texture_download.as_ref().unwrap(),
layout: wgpu::ImageDataLayout {
offset: 0,
bytes_per_row: Some(params.extent.width * 4),
rows_per_image: Some(params.extent.height),
},
},
params.extent,
);
}
pub fn download(&self, device: &Device, buffer: &mut [u8]) {
let buffer_slice = self.texture_download.as_ref().unwrap().slice(..);
let (sender, receiver) = oneshot::channel();
buffer_slice.map_async(wgpu::MapMode::Read, move |r| sender.send(r).unwrap());
device.poll(wgpu::Maintain::Wait);
receiver.recv().unwrap().unwrap();
{
let view = buffer_slice.get_mapped_range();
buffer.copy_from_slice(&view[..]);
}
self.texture_download.as_ref().unwrap().unmap();
}
}
|
