Struct ChainTextures 

pub struct ChainTextures {

    pub render_texture: Texture,
    pub render_texture_view: TextureView,
    pub prev_texture: Texture,
    pub prev_texture_view: TextureView,
    pub final_texture: Texture,
    pub final_texture_view: TextureView,
    pub blur1_texture: Texture,
    pub blur1_texture_view: TextureView,
    pub blur1_scratch_texture: Texture,
    pub blur1_scratch_texture_view: TextureView,
    pub blur2_texture: Texture,
    pub blur2_texture_view: TextureView,
    pub blur2_scratch_texture: Texture,
    pub blur2_scratch_texture_view: TextureView,
    pub blur3_texture: Texture,
    pub blur3_texture_view: TextureView,
    pub blur3_scratch_texture: Texture,
    pub blur3_scratch_texture_view: TextureView,
    pub prev_blur1_texture: Texture,
    pub prev_blur1_texture_view: TextureView,
    pub prev_blur2_texture: Texture,
    pub prev_blur2_texture_view: TextureView,
    pub prev_blur3_texture: Texture,
    pub prev_blur3_texture_view: TextureView,
}

All resolution-dependent textures consumed and produced by one rendering chain.

Fields

render_texture: Texture

Warp pass output. Fed back into next frame’s warp pass via Self::prev_texture, and read by the comp pass for the current frame’s display output. Display-only filters never write here so they don’t leak into the feedback loop.

render_texture_view: TextureView

prev_texture: Texture

Last frame’s warp output. Sampled by the warp pass on the next frame’s feedback step. copy_to_prev swaps the current frame’s render_texture into this slot at the end of each render.

prev_texture_view: TextureView

final_texture: Texture

Comp pass output for this chain. The user-visible image (after gamma + echo + anaglyph + user comp shader) — but not the display: secondary chains during transitions render here too, and the final-blend pipeline composites the chain’s final_texture into the renderer’s display target.

final_texture_view: TextureView

blur1_texture: Texture

blur1_texture_view: TextureView

blur1_scratch_texture: Texture

blur1_scratch_texture_view: TextureView

blur2_texture: Texture

blur2_texture_view: TextureView

blur2_scratch_texture: Texture

blur2_scratch_texture_view: TextureView

blur3_texture: Texture

blur3_texture_view: TextureView

blur3_scratch_texture: Texture

blur3_scratch_texture_view: TextureView

prev_blur1_texture: Texture

One-frame-delayed copy of the blur pyramid. Populated at the end of each frame (after the blur pipeline writes the current frame’s pyramid); read by the next frame’s warp pass — where a user warp shader’s GetBlur1/2/3(uv) sample the previous frame’s blur, mirroring how prev_texture mirrors the previous warp output. Required because the warp pass runs before this frame’s blur pipeline; sampling this-frame’s blur would be a self-dependency.

prev_blur1_texture_view: TextureView

prev_blur2_texture: Texture

prev_blur2_texture_view: TextureView

prev_blur3_texture: Texture

prev_blur3_texture_view: TextureView

Implementations

impl ChainTextures

pub fn new(device: &Device, config: &RenderConfig) -> Self

Allocate a fresh set of per-chain textures at the resolution + format declared by config. Initial contents are undefined; the first warp pass clears render_texture and the first copy_to_prev populates prev_texture.

pub fn resize(&mut self, device: &Device, config: &RenderConfig)

Re-allocate every texture at the new resolution. All TextureViews become invalid after this call; downstream pipelines (warp, comp, blur, custom_shape) must be rebound — see [crate::render_chain::RenderChain::rebind_after_resize].

pub fn copy_blur_to_prev( &self, encoder: &mut CommandEncoder, _config: &RenderConfig, )

Copy blur{1,2,3}_texture → prev_blur{1,2,3}_texture so the next frame’s warp pass (which runs before that frame’s blur pipeline) can sample a one-frame-delayed pyramid through a user-translated warp shader’s GetBlur1/2/3(uv). Cheap — three GPU copy_texture_to_texture calls on already-resident memory. Must run AFTER the blur pipeline has written this frame’s blur1/2/3 (otherwise we’d snapshot stale data).

pub fn copy_to_prev(&self, encoder: &mut CommandEncoder, config: &RenderConfig)

Copy render_texture → prev_texture to close the feedback loop for next frame. Must run AFTER the comp pass for the current frame has consumed prev_texture (the echo blend reads frame N-1’s warp output via prev_texture).