Rewrite examples 29 and 63 to HLSL compute

[devshgraphicsprogramming]

In ex 29, get rid of rasterization pipeline, imageStore straight to image.

[devshgraphicsprogramming]

@AnastaZIuk if you want we can pawn off to @Hazardu

[AnastaZIuk]

@AnastaZIuk if you want we can pawn off to @Hazardu

agreed