Function generateMipmap

generateMipmap(device: GPUDevice, texture: GPUTexture): void
Generates mip levels from level 0 to the last mip for an existing texture

The texture must have been created with TEXTURE_BINDING and RENDER_ATTACHMENT and been created with mip levels
Parameters
- device: GPUDevice
  A GPUDevice
- texture: GPUTexture
  The texture to create mips for
Returns void