Hello, I am trying to use an effect with sprite.draw but its not having any effect on the results.

I believe you are supposed to just do effect.begin, effect.beginpass, spritebatch.begin, draw and then end everything. But it has no effect.

The shader loads ok and looks like this (for testing) -

float4 ps1() : COLOR
{
return float4(1,1,1,1);
}

technique main
{
pass P0
{
VertexShader = null;
PixelShader = compile ps_3_0 ps1();
ZEnable = false;
}
}

Any help is very much appreciated.

Thanks for the fast response. I have just tried a ps2_0 version with a vertex shader and its no different. Also no errors are being thrown or reported.

Any other ideas ?

interestingly if I use cDevice.PixelShader = ps insteads of trying to use the effect file it works. Is that a bug or am I doing something wrong ?