Struct HotWorldPostProcessPass 

pub struct HotWorldPostProcessPass { /* private fields */ }

A hot-reloadable world-space post-processing pass.

Watches a shader file and automatically recompiles when changes are detected. Wraps WorldPostProcessPass with hot-reload capability.

Unlike HotPostProcessPass, this pass provides camera information to the shader, enabling world-space effects like fog, atmospheric scattering, and screen-space reflections that need to reconstruct 3D positions from the depth buffer.

Example

use hoplite::{GpuContext, HotWorldPostProcessPass};

let mut fog = HotWorldPostProcessPass::new(&gpu, "shaders/fog.wgsl")?;

// In render loop:
fog.check_reload(&gpu);
fog.render(&gpu, &mut render_pass, time, &camera, &scene_texture_view);

Implementations

impl HotWorldPostProcessPass

pub fn new(gpu: &GpuContext, path: impl AsRef<Path>) -> Result<Self>

Create a new hot-reloadable world-space post-processing pass.

Errors

Returns an error if the shader file cannot be read.

pub fn check_reload(&mut self, gpu: &GpuContext)

Check for shader changes and recompile if needed.

Call this once per frame. On compilation failure, retains the previous shader.

pub fn render( &self, gpu: &GpuContext, render_pass: &mut RenderPass<'_>, time: f32, camera: &Camera, input_view: &TextureView, )

Render the post-process effect with camera data.

Samples from input_view and renders to the current render pass target. Camera data is uploaded to the shader for world-space calculations. Does nothing if no valid shader is loaded.

pub fn is_valid(&self) -> bool

Returns whether a valid shader is currently loaded.