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|
use anyhow::Result;
use weareshared::{
packets::Resource,
resources::{Indecies, Part, VertexAttributes},
};
use wgpu::{
BindGroup, BindGroupDescriptor, BindGroupLayoutDescriptor, BlendState, Buffer, BufferUsages,
ColorTargetState, ColorWrites, CommandEncoder, Device, FragmentState, FrontFace, IndexFormat,
LoadOp, MultisampleState, Operations, PipelineCompilationOptions, PipelineLayoutDescriptor,
PolygonMode, PrimitiveState, PrimitiveTopology, RenderPassColorAttachment,
RenderPassDescriptor, RenderPipeline, RenderPipelineDescriptor, StoreOp, TextureFormat,
TextureView, VertexAttribute, VertexBufferLayout, VertexFormat, VertexState, VertexStepMode,
include_wgsl,
util::{BufferInitDescriptor, DeviceExt},
};
pub struct RenderPart {
vertex: Buffer,
index: Buffer,
pipeline: RenderPipeline,
bind_group: BindGroup,
n_vertex: u32,
}
pub struct PartData {
target: Part,
vertex: Vec<Option<VertexAttributes>>,
index: Option<Indecies>,
}
impl PartData {
pub fn update(&mut self, hash: Resource, data: &[u8]) -> Result<bool> {
if Some(hash) == self.target.index {
self.index = Some(Indecies::deserialize(data)?)
}
for (thash, tdata) in self.target.vertex.iter().zip(self.vertex.iter_mut()) {
if hash == *thash {
*tdata = Some(VertexAttributes::deserialize(data)?)
}
}
Ok(self.vertex.iter().all(|v| v.is_some()) && self.index.is_some())
}
}
impl RenderPart {
pub fn new(device: Device, data: PartData, format: TextureFormat) -> Self {
let mut vertex = Vec::new();
let mut index = Vec::new();
let attrs = data.vertex.unwrap();
for i in 0..data.vertex[0].as_ref().unwrap().0.len() {
vertex.extend(attrs[0].0[i].to_le_bytes());
vertex.extend(attrs[1].0[i].to_le_bytes());
vertex.extend(attrs[2].0[i].to_le_bytes());
}
let mut n_vertex = 0;
for ind in data.index.unwrap().0 {
index.extend(ind[0].to_le_bytes());
index.extend(ind[1].to_le_bytes());
index.extend(ind[2].to_le_bytes());
n_vertex += 3;
}
let vertex = device.create_buffer_init(&BufferInitDescriptor {
label: None,
contents: &vertex,
usage: BufferUsages::VERTEX | BufferUsages::COPY_DST,
});
let index = device.create_buffer_init(&BufferInitDescriptor {
label: None,
contents: &index,
usage: BufferUsages::INDEX | BufferUsages::COPY_DST,
});
let module = device.create_shader_module(include_wgsl!("shader.wgsl"));
let bind_group_layout = device.create_bind_group_layout(&BindGroupLayoutDescriptor {
entries: &[],
label: None,
});
let bind_group = device.create_bind_group(&BindGroupDescriptor {
label: None,
layout: &bind_group_layout,
entries: &[],
});
let pipeline_layout = device.create_pipeline_layout(&PipelineLayoutDescriptor {
label: None,
bind_group_layouts: &[&bind_group_layout],
push_constant_ranges: &[],
});
let pipeline = device.create_render_pipeline(&RenderPipelineDescriptor {
label: None,
layout: Some(&pipeline_layout),
fragment: Some(FragmentState {
module: &module,
entry_point: Some("fs_main"),
targets: &[Some(ColorTargetState {
blend: Some(BlendState::PREMULTIPLIED_ALPHA_BLENDING),
format,
write_mask: ColorWrites::all(),
})],
compilation_options: PipelineCompilationOptions::default(),
}),
vertex: VertexState {
module: &module,
entry_point: Some("vs_main"),
buffers: &[VertexBufferLayout {
step_mode: VertexStepMode::Vertex,
array_stride: 3,
attributes: &[VertexAttribute {
format: VertexFormat::Float32x3,
offset: 0,
shader_location: 0,
}],
}],
compilation_options: PipelineCompilationOptions::default(),
},
primitive: PrimitiveState {
topology: PrimitiveTopology::TriangleList,
front_face: FrontFace::Ccw,
cull_mode: None, //Some(Face::Back),
polygon_mode: PolygonMode::Fill,
..Default::default()
},
depth_stencil: Default::default(),
multisample: MultisampleState::default(),
multiview: None,
cache: None,
});
Self {
bind_group,
index,
vertex,
pipeline,
n_vertex,
}
}
pub fn draw(&self, commands: &mut CommandEncoder, target: TextureView) {
let mut rpass = commands.begin_render_pass(&RenderPassDescriptor {
label: None,
color_attachments: &[Some(RenderPassColorAttachment {
view: &target,
resolve_target: None,
ops: Operations {
store: StoreOp::Store,
load: LoadOp::Load,
},
})],
..Default::default()
});
rpass.set_bind_group(0, &self.bind_group, &[]);
rpass.set_pipeline(&self.pipeline);
rpass.set_vertex_buffer(0, self.vertex.slice(..));
rpass.set_index_buffer(self.index.slice(..), IndexFormat::Uint16);
rpass.draw(0..self.n_vertex, 0..1);
}
}
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