GPGPU Programming for Games and Science

GPU Computing 193

// M od if y t h e l ev e l −0 mipmap of output , e it h er by mapped w ri tes or by

// sta g i ng t e x tu r e s . Then make t h e n e x t c al l t o h av e t he o t h e r l e v e l s

// computed .

if (input.wantAutogeneratedMipmaps)

{

context−>GenerateMips ( output . srView ) ;

}

LISTING 4.40: Pseudocode for telling D3D11 to compute mipmap levels

after the level-0 mipmap is initialized or (later) modified.

Because the generation requires a context, you cannot have them computed

by the device (during the

CreateMyDX11Texture) call. If you really want them

computed at texture creation time, you will need to do so on the CPU at run-

time