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|
use super::{CommonBuffers, Params, RoundParams};
use bytemuck::{Pod, Zeroable};
use std::mem::size_of;
use wgpu::{
include_wgsl, BindGroup, BindGroupDescriptor, BindGroupEntry, BindGroupLayoutDescriptor,
BindGroupLayoutEntry, BindingType, Buffer, BufferDescriptor, BufferUsages, CommandEncoder,
ComputePipeline, ComputePipelineDescriptor, Device, PipelineCompilationOptions,
PipelineLayoutDescriptor, Queue, ShaderStages, TextureSampleType, TextureViewDimension,
};
pub struct MotionDebugger {
pipeline: ComputePipeline,
bind_groups: [BindGroup; 2],
uniform_buffer: Buffer,
uniform: DebuggerUniform,
}
#[repr(C)]
#[derive(Debug, Clone, Copy, Pod, Zeroable, Default)]
pub struct DebuggerUniform {
block_size: [i32; 2],
output_stride: i32,
_pad: u32,
}
impl MotionDebugger {
pub fn create(device: &Device, params: &Params, bufs: &CommonBuffers) -> Self {
let uniform_buffer = device.create_buffer(&BufferDescriptor {
label: Some("encoder uniforms"),
size: size_of::<DebuggerUniform>() as u64,
usage: BufferUsages::UNIFORM | BufferUsages::COPY_DST,
mapped_at_creation: false,
});
let uniform = DebuggerUniform {
block_size: [params.block_width as i32, params.block_height as i32],
output_stride: (params.width / params.block_width) as i32,
..Default::default()
};
let bind_group_layout = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
label: None,
entries: &[
BindGroupLayoutEntry {
binding: 0,
count: None,
ty: BindingType::Buffer {
ty: wgpu::BufferBindingType::Uniform,
has_dynamic_offset: false,
min_binding_size: None,
},
visibility: ShaderStages::COMPUTE,
},
BindGroupLayoutEntry {
binding: 1,
count: None,
ty: BindingType::Buffer {
has_dynamic_offset: false,
min_binding_size: None,
ty: wgpu::BufferBindingType::Storage { read_only: true },
},
visibility: ShaderStages::COMPUTE,
},
BindGroupLayoutEntry {
binding: 2,
count: None,
ty: BindingType::Texture {
sample_type: TextureSampleType::Float { filterable: false },
view_dimension: TextureViewDimension::D2,
multisampled: false,
},
visibility: ShaderStages::COMPUTE,
},
BindGroupLayoutEntry {
binding: 3,
count: None,
ty: BindingType::Texture {
sample_type: TextureSampleType::Float { filterable: false },
view_dimension: TextureViewDimension::D2,
multisampled: false,
},
visibility: ShaderStages::COMPUTE,
},
BindGroupLayoutEntry {
binding: 4,
count: None,
ty: BindingType::StorageTexture {
access: wgpu::StorageTextureAccess::WriteOnly,
format: wgpu::TextureFormat::Rgba8Unorm,
view_dimension: TextureViewDimension::D2,
},
visibility: ShaderStages::COMPUTE,
},
],
});
let bind_groups = [0, 1].map(|i| {
device.create_bind_group(&BindGroupDescriptor {
label: None,
layout: &bind_group_layout,
entries: &[
BindGroupEntry {
binding: 0,
resource: uniform_buffer.as_entire_binding(),
},
BindGroupEntry {
binding: 1,
resource: bufs.offsets.as_entire_binding(),
},
BindGroupEntry {
binding: 2,
resource: wgpu::BindingResource::TextureView(
&bufs.textures[i].create_view(&Default::default()),
),
},
BindGroupEntry {
binding: 3,
resource: wgpu::BindingResource::TextureView(
&bufs.textures[1 - i].create_view(&Default::default()),
),
},
BindGroupEntry {
binding: 4,
resource: wgpu::BindingResource::TextureView(
&bufs
.debug_output
.as_ref()
.unwrap()
.create_view(&Default::default()),
),
},
],
})
});
let pipeline_layout = device.create_pipeline_layout(&PipelineLayoutDescriptor {
label: None,
bind_group_layouts: &[&bind_group_layout],
push_constant_ranges: &[],
});
let module = device.create_shader_module(include_wgsl!("debug.wgsl"));
let pipeline = device.create_compute_pipeline(&ComputePipelineDescriptor {
label: None,
layout: Some(&pipeline_layout),
module: &module,
entry_point: "main",
compilation_options: PipelineCompilationOptions::default(),
});
Self {
bind_groups,
uniform,
uniform_buffer,
pipeline,
}
}
pub fn write_uniforms(&self, queue: &Queue) {
queue.write_buffer(
&self.uniform_buffer,
0,
bytemuck::cast_slice(&[self.uniform]),
)
}
pub fn pass(&self, encoder: &mut CommandEncoder, params: &Params, rp: &RoundParams) {
let mut cpass = encoder.begin_compute_pass(&wgpu::ComputePassDescriptor {
label: None,
timestamp_writes: None,
});
cpass.set_pipeline(&self.pipeline);
cpass.set_bind_group(0, &self.bind_groups[rp.swap], &[]);
cpass.dispatch_workgroups(params.blocks_x as u32, params.blocks_y as u32, 1);
}
}
|
