When you need ps2.0 you're using complicated dependant texture-reads - by altering the texture coordinates in the vertex-shader you can use ps1.1.

But you can also use the directx renderstates:


FX-file Code:

---

matrix matMtl;
texture entSkin1;
texture entSkin2;

Technique shift_uv
{
	Pass p0
	{
		Texture[0] = <entSkin1>;
		Texture[1] = <entSkin2>;

		TextureTransform[1] = <matMtl>;
		TextureTransformFlags[1] = Count2;

		ColorOp[0]   = SelectArg1;
		ColorArg1[0] = Texture;
		ColorOp[1]   = Add;
		ColorArg1[1] = Texture;
		ColorArg2[1] = Current;

		ColorOp[2]   = Disable;
	}
}

---

C-script Code:

---

..
	var phi = 0;
	while(1)
	{
		phi += 1*time;
		mat_identity(mtl_shiftuv.matrix);
		mtl_shiftuv.matrix13 = floatd(phi,255); // x-direction
		mtl_shiftuv.matrix23 = floatd(phi,255); // y-direction
		wait(1);
	}
..

---