Shaders not supported

[blackrack]

So I made 3 shaders for KSP, all of them seem to work fine in unity and all of them use shader model 4.0. However, after I loaded them in KSP, one works and the two others don't.

After checking each shader with isSupported I get the following

Atmo/Sky (UnityEngine.Shader)
False
Atmo/SkyMap (UnityEngine.Shader)
False
EncodeFloat/DecodeToFloat (UnityEngine.Shader)
True

What could be the reason for this? All three shaders were made for dx9, all three of them use rendertextures but don't use compute shaders. And I used the snippet of code to load all three, i'm at a loss here...

Edit: As it turns out, my shaders will run by forcing d3d11 or opengl but not d3d9 or d3d10 for some reason.

Edited April 10, 2015 by blackrack

[sarbian]

Shader model 4.0 require DX11 on Unity.

http://docs.unity3d.com/Manual/SL-ShaderPrograms.html

[blackrack]

I have modified my shaders, they now compile correctly for directx 9 and unity reports shader model 3.0, however, ingame it still says they are unsupported andf won't load. What could it be that I am missing? Does anybody have any guidelines or something?

I have removed a few tex2Dlod calls and changed my code to work with tex2d instead.

Edit: After adding #pragma only_renderers d3d9, unity now reports:No subshaders can run on this graphics card. No idea why.

Edited April 10, 2015 by blackrack

[blackrack]

My shaders now work in dx9, sort of

Are there any mathematic operators in CG that work differently from dx9 to dx11? Maybe some flipped matrixes? I'm trying to narrow it down but can't really find anything .

Edit: I finally fixed this, turns out sqrt in dx9 is less precise than in dx11.

Edited April 13, 2015 by blackrack