dawn-cmake/docs/dawn/features/transient_attachments.md

Transient Attachments

The transient-attachments feature allows creation of attachments that allow render pass operations to stay in tile memory, avoiding VRAM traffic and potentially avoiding VRAM allocation for the textures.

Example Usage:

wgpu::TextureDescriptor desc;
desc.format = wgpu::TextureFormat::RGBA8Unorm;
desc.size = {1, 1, 1};
desc.usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::TransientAttachment;

auto transientTexture = device.CreateTexture(&desc);

// Can now create views from the texture to serve as transient attachments, e.g.
// as color attachments in a render pipeline.

Notes:

• Only supported usage is wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::TransientAttachment
• It is not possible to load from or store to TextureViews that are used as transient attachments