IOS equivalent to tex2Dproj

Question

How do you do hardware accelerated textured projection in Metal? I cannot find a link or resource describing how to do this.

+3

aledalgrande 09 Aug 15 at 12:42 am

1 answer

Muzza · Accepted Answer · 2015-08-09T13:43:08+0000

You just separate yourself.

Opengl

a = tex2Dproj( texture, texcoord.xyzw )
b = tex2Dproj( texture, texcoord.xyz )

Metal equivalent:

a = texture.sample( sampler, texcoord.xy/texcoord.w )
b = texture.sample( sampler, texcoord.xy/texcoord.z )

(Choose "a" or "b" depending on the type of projection you are doing, usually "a")