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XNA 3.0

Started by vetroXL Apr 9, 2009 at 2:49 PM 1 replies 1.1k views

Original Post

Apr 9, 2009 at 2:49 PM

I'm just playing around with XNA 3.0, and wow, sometimes I wonder why I'm writting my engine in C++ DirectX10. XNA makes things so much easier. Does anyone know if XNA 3.0 will support HLSL 4.0? Or does it only support up to version 2? I like the branching in HLSL 4 and I like the geometry shader, but I don't know if that's a dx10 thing only though?

MJP

Apr 9, 2009 at 2:55 PM

Nah, you're stuck with D3D9 shader models only (SM1.1, SM2.0, and SM3.0). It's unlikely you'll get D3D10 support, since it would break compatibility with the Xbox 360 (which supports a superset of SM3.0). SM3.0 is pretty darn flexible though...you don't get the geometry shader but you most definitely get dynamic branching and looping. If you target the 360, you can also inline shader microcode which let's you do some really awesome things (like normalized and unnormalized texture fetches, full texture fetching functionality from the vertex shader, arbitrary vertex fetch, etc.).

vetroXL

Apr 10, 2009 at 10:40 AM

hmm... thanks MJP... i'm wondering how long the XBOX360 will come to End of life... I have my dx10 engine about 30% complete... I am contemplating porting it over to the XNA platform.

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