@jcl : Yes, my model already have diffuse map and normal map stored
in skin 1 and skin 2 respectively. My test level is very simple as
follow :



And I've assigned the action "fx_bump" to my model "banshee.mdl"
in WED. Please tell me if there are any further steps that I need
to do in order to show the bumpmapping effect. I can send you the
test level if necessary.

Thank you.

The first thing to do with any such problem is trying to find the reason. You are not helpless when your project does not work, but have many possibilities to find out what's wrong.

If a shader does not work, first check the shader in the shader viewer. Then you'll see if the problem is related to your PC or your model.

If it's your model, check if the second skin is really not assigned to any triangle. If it is, the engine assumes that this skin is just another color texture and no normal map. Another possibility is that your normal map contains wrong content.

If the bumpmapping shaders don't work at all on your PC, check the video driver. Problems of this kind can be caused by installing a driver for a wrong card, or vice versa.

I've copied my model to the shadertest folder, rename it
to marine.mdl and run shaderTest.c, my model show up
perfectly with different shader settings.

Maybe there are some codes missing in mtlFX.c

bump.fx works here, which values have you set for vecskill41?

I didn't set any value to vecskill41, all I have to do
is shown on the above post.

Ah, this explains it then. I had overlooked that you just assigned the fx_bump action, but without setting the two variables it requires (skill41 and skill42).

The way to set the bump shader is:

action set_bump()
{
my.skill41 = floatv(50);
my.skill42 = floatv(50);
fx_bump();
....
}

The values affect the shader ambient and diffuse component. You can play with the values in the shader viewer. They are the sliders below the shader selector in 0..100 range.

why is this not coded into fx_bump action

action fx_bump()
{
my.material = mtl_bump;
}


is this stated in the manual

@jcl : Thank you, that work perfectly!

I'm agree with MaxF, why not hard code in mtlFX.c, or at least,
describe the usage of the above codes both in the fx_bump action
and the manual.

@JCL: You said that with the new update, a compiled version of the shader viewer will be available for the public. I'm still waiting for this. Please upload it soon!

Thanks!

Dark_Samurai

You're right, I promised that. I'll put the shader viewer together as an executable and upload it today or tomorrow to the AU demo section.

-Vlau: the default values will be hard coded in the action for the next update.