Transforming single-pass into multi-pass shader

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Transforming single-pass into multi-pass shader #61509 01/02/06 15:17 01/02/06 15:17
Joined: Aug 2003 Posts: 183 BionicHero OP Member
BionicHero OP Member Joined: Aug 2003 Posts: 183	Hi! I took the HLSL shader for terrain multitexturing and added some extra textures for which I had to go up from PS1.1 to PS1.4. However I want this to be also PS1.1-compatible so I wanted to transform the 1.4-single-pass shader into a 1.1-multi-pass shader. My problem is: How to do it? Do you have to render the first pass into memory and then sample that into the second pass? If yes, how do I have to code that? If not, how does it work instead? Any directions would be great! I went over Google for over an hour and I found not a single multi-pass shader in HLSL... DeadlyElectronics.com

Re: Transforming single-pass into multi-pass shade [Re: BionicHero] #61510 01/02/06 15:22 01/02/06 15:22
Joined: Oct 2002 Posts: 8,939 planet.earth ello Senior Expert
ello Senior Expert Joined: Oct 2002 Posts: 8,939 planet.earth	you need to use the blend states: srcBlend and destBlend. for the second and following passes you need to set EnableAlphaBlend = 1; and BlendOp = 1; check the dx sdk documentation for those src and destBlend states www.earthcontrol.de quoted: We want to maintain a clean, decent, American family suited forum look... which means you may post zombies or chainsaw massacres, but no erotic.

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