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Add raymarched fog

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This commit is contained in:
Lauri Räsänen 2023-11-08 21:35:53 +02:00
parent ca9ed36c37
commit 9acbec9a6a
6 changed files with 124 additions and 45 deletions
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31
src/core/state.rs
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@ -21,10 +21,10 @@ const SHADOW_MAP_LAYERS: u32 = 6;
#[repr(C)]
#[derive(Debug, Default, Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
pub struct GlobalUniforms {
pub time: f32,
pub light_matrix_index: u32,
// No DownlevelFlags::BUFFER_BINDINGS_NOT_16_BYTE_ALIGNED in WebGL
pub use_shadowmaps: u32,
_padding: [u32; 2],
pub _padding: u32,
}
pub struct State {
@ -56,8 +56,8 @@ pub struct State {
light_depth_bind_group: wgpu::BindGroup,
light_depth_pass: RenderPass,
light_depth_texture_target_views: [TextureView; SHADOW_MAP_LAYERS as usize],
light_matrix_uniform: GlobalUniforms,
light_matrix_buffer: wgpu::Buffer,
global_uniforms: GlobalUniforms,
global_uniforms_buffer: wgpu::Buffer,
}
impl State {
@ -198,10 +198,10 @@ impl State {
usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
});
let light_matrix_uniform = GlobalUniforms::default();
let light_matrix_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
let global_uniforms = GlobalUniforms::default();
let global_uniforms_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
label: Some("Light Matrix UB"),
contents: bytemuck::cast_slice(&[light_matrix_uniform]),
contents: bytemuck::cast_slice(&[global_uniforms]),
usage: wgpu::BufferUsages::UNIFORM | wgpu::BufferUsages::COPY_DST,
});
@ -248,7 +248,7 @@ impl State {
// matrix index
wgpu::BindGroupEntry {
binding: 1,
resource: light_matrix_buffer.as_entire_binding(),
resource: global_uniforms_buffer.as_entire_binding(),
},
],
label: Some("Light Bind Group"),
@ -499,8 +499,8 @@ impl State {
light_depth_bind_group,
light_depth_pass,
light_depth_texture_target_views,
light_matrix_uniform,
light_matrix_buffer,
global_uniforms,
global_uniforms_buffer,
}
}
@ -560,18 +560,21 @@ impl State {
0,
bytemuck::cast_slice(&[self.light_uniform]),
);
// Global uniforms
self.global_uniforms.time = time.as_secs_f32();
self.global_uniforms.use_shadowmaps = if cfg!(target_arch = "wasm32") { 0u32 } else { 1u32 };
}
pub fn render(&mut self) -> Result<(), wgpu::SurfaceError> {
// render light to depth textures
for i in 0..SHADOW_MAP_LAYERS as usize {
self.light_matrix_uniform.light_matrix_index = i as u32;
self.light_matrix_uniform.use_shadowmaps = if cfg!(target_arch = "wasm32") { 0u32 } else { 1u32 };
self.global_uniforms.light_matrix_index = i as u32;
self.queue.write_buffer(
&self.light_matrix_buffer,
&self.global_uniforms_buffer,
0,
bytemuck::cast_slice(&[self.light_matrix_uniform]),
bytemuck::cast_slice(&[self.global_uniforms]),
);
let mut depth_encoder = self