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voxel-rs
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Begin using the voxel volume shader

This commit is contained in:
Jarrod Doyle 2023-04-18 10:56:17 +01:00
parent c44f32bf8d
commit 892747d6c4
Signed by: Jayrude
GPG Key ID: 38B57B16E7C0ADF7
1 changed files with 39 additions and 10 deletions
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49
src/renderer.rs
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@ -76,6 +76,7 @@ pub(crate) struct Renderer {
compute_bind_group: wgpu::BindGroup,
render_pipeline: wgpu::RenderPipeline,
render_texture: Texture,
voxel_texture: Texture,
}
impl Renderer {
@ -96,17 +97,40 @@ impl Renderer {
.with_shader_visibility(wgpu::ShaderStages::FRAGMENT | wgpu::ShaderStages::COMPUTE)
.build(&context);
let data_len = context.size.width * context.size.height * 4;
log::info!("Creating voxel volume texture...");
let voxel_texture = TextureBuilder::new()
.with_size(8, 8, 8)
.with_dimension(wgpu::TextureDimension::D3)
.with_format(wgpu::TextureFormat::Rgba8Unorm)
.with_usage(
wgpu::TextureUsages::TEXTURE_BINDING
| wgpu::TextureUsages::COPY_DST
| wgpu::TextureUsages::STORAGE_BINDING,
)
.with_shader_visibility(wgpu::ShaderStages::COMPUTE)
.build(&context);
let data_len = 8 * 8 * 8 * 4;
let mut data: Vec<u8> = Vec::with_capacity(data_len.try_into().unwrap());
for _ in 0..context.size.height {
for _ in 0..context.size.width {
data.push(255u8);
data.push(0u8);
data.push(0u8);
data.push(255u8);
for z in 0..8 {
for y in 0..8 {
for x in 0..8 {
let pos = glam::vec3(x as f32, y as f32, z as f32) - glam::vec3(4.0, 4.0, 4.0);
if pos.length_squared() <= (u32::pow(4, 2) as f32) {
data.push(((x + 1) * 32 - 1) as u8);
data.push(((y + 1) * 32 - 1) as u8);
data.push(((z + 1) * 32 - 1) as u8);
data.push(255u8);
} else {
data.push(0u8);
data.push(0u8);
data.push(0u8);
data.push(0u8);
}
}
}
}
render_texture.update(&context, &data);
voxel_texture.update(&context, &data);
log::info!("Creating render pipeline...");
let render_pipeline =
@ -138,7 +162,7 @@ impl Renderer {
});
log::info!("Creating compute pipeline...");
let cs_descriptor = wgpu::include_wgsl!("../assets/shaders/branchless_dda.wgsl");
let cs_descriptor = wgpu::include_wgsl!("../assets/shaders/voxel_volume.wgsl");
let cs = context.device.create_shader_module(cs_descriptor);
let compute_layout =
context
@ -174,7 +198,10 @@ impl Renderer {
layout: Some(&context.device.create_pipeline_layout(
&wgpu::PipelineLayoutDescriptor {
label: Some("compute"),
bind_group_layouts: &[&compute_layout],
bind_group_layouts: &[
&compute_layout,
&voxel_texture.bind_group_layout,
],
push_constant_ranges: &[],
},
)),
@ -195,6 +222,7 @@ impl Renderer {
compute_bind_group,
render_pipeline,
render_texture,
voxel_texture,
}
}
@ -212,6 +240,7 @@ impl Renderer {
let mut compute_pass = encoder.begin_compute_pass(&wgpu::ComputePassDescriptor::default());
compute_pass.set_pipeline(&self.compute_pipeline);
compute_pass.set_bind_group(0, &self.compute_bind_group, &[]);
compute_pass.set_bind_group(1, &self.voxel_texture.bind_group, &[]);
compute_pass.dispatch_workgroups(size.width / 8, size.height / 8, 1);
drop(compute_pass);