Where has gone cube map shader code?

[isidisi]

I'm using Leadwerks Engine 2.28

 

It seems as if some versions ago there was a shader for cube maps. Now there's some code in mesh.vert shader, and no code in mesh.frag shader (only a uniform samplerCube LW_CUBEMAP declaration, but later this is not using in shader).

 

But if I download some versions older, I see there was some code related to cube maps in mesh.frag shader.

 

Was deleted by error?, is not needed to implement a cube map? What's the right way to do a cube map with current version of Leadwerks?

 

Thanks

[Masterxilo]

In the vertex shader, add:

varying vec3 modelnormal;

in the declarations before the code.

Then in the code, after "modelvertex = ":

modelnormal = nmat * gl_Normal;

 

Now go to the frag shader and extend the declaration of the cube map to this:

#ifdef LW_CUBEMAP
uniform samplerCube LW_CUBEMAP;
   uniform float cubemapIntensity = 1.0;
   varying vec3 modelnormal;
#endif

and extend:

//Diffuse
gl_FragData[0] = diffuse;

to

	//Diffuse
   #ifdef LW_CUBEMAP
       // Add cubemap
       diffuse = mix(diffuse,
                     textureCube(LW_CUBEMAP, 
                         reflect(normalize(cameraposition - vertexposition.xyz), normalize(modelnormal)) * vec3(1.0,-1.0,1.0)),
                     cubemapIntensity);
   #endif

gl_FragData[0] = diffuse;	

 

Now the only thing left to do is the declaration of an "intermediate" (= include) shader.

Mine looks like:

// Requires meshModelnormal.vert

#define LW_DIFFUSE texture0
#define LW_CUBEMAP texture3

Include "abstract::meshCubemap.frag"

And is called mesh_diffuse_cubemap.frag

 

This should do the trick (it does for 2.32, shouldn't be much different in 2.28).

[isidisi]

Thanks Masterxilo, I'll try :-D

[isidisi]

Thanks Masterxilo, I'll try :-D

 

I tried and works ok, but trying to understand the code, what mat and nmat matrix are in vertex shader?