Module render_target 

Off-screen render targets for cached widget subtrees and compositing.

RenderTarget owns an offscreen Rgba8Unorm texture that can be used as a RENDER_ATTACHMENT, and whose contents can be read back to CPU memory or sampled as a texture in subsequent render passes.

Usage

1. Create a RenderTarget with RenderTarget::new.
2. Render into it by using RenderTarget::color_view as the colour attachment in a render pass.
3. Optionally call RenderTarget::readback_rgba for CPU pixel access.
4. Use RenderTarget::texture_view + a sampler to composite the target into a parent pass (e.g. via the textured pipeline).

Render targets support optional MSAA: pass sample_count > 1 to obtain a multisample render texture that resolves into the single-sample backing texture on each render pass. The backing texture (color_texture) is always sample_count=1 and COPY_SRC, making readback straightforward.

Structs

RenderTarget

An off-screen GPU render target.