damn me,
i solved,
just an underscore missing in this line...
Eye = glPosition - Camera;
sorry... :(
Il ven, 2004-07-02 alle 10:13, Enrico Borrione ha scritto:
> this is not really a OpenSG question,
> but maybe someone can help me anyway.
>
> I have made 2 simple program, a vp and a fp.
> they should grab the scene, convert em in eye coord
> and then paint everything red.
> As long for the red thing, they are working, so i
> assume they are correctly loaded. Now i wanted to tex map
> the scene, so i made some facility to pass texture coords
> form vp to fp, but surprise surprise, it is not working...
>
> here are my programs:
>
> //VP
> uniform vec4 Camera;
>
> varying vec3 PixColor;
> varying vec3 TexCoord;
> varying vec4 Eye;
>
> void main (void)
> {
> gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
>
> Eye = glPosition - Camera;
>
> //TexCoord = vec3 (gl_Normal);
>
> TexCoord = vec3 (1.0,0.0,0.0);
> }
>
> note that i set *constant* tex coord, just for debug reasons.
>
> //FP
> uniform samplerCube map;
>
> varying vec3 PixColor;
> varying vec3 TexCoord;
> varying vec4 Eye;
>
>
> void main(void)
> {
> // vec4 pixcolor = textureCube (map, TexCoord);
>
> //gl_FragColor = vec4 (pixcolor);
>
>
> // just to check output
> // gl_FragColor = vec4 (1,0,0,1);
> gl_FragColor = vec4 (TexCoord, 1.0);
> }
>
> this FP should set all fragments to the color held into TexCoord (which
> is red). It isn't very nice, but again it is for debug purposes...
> Whenever i use TexCoord variable, the program fails and std OpenGL
> pipeline is restored. What i am mistaking in the variables passing from
> a program to the other? I set up correctly TexCoord in the vp to 1,0,0,
> but then probably i lose it somewhere in the execution...
>
> any clues?
> thx enrico
>
>
>
>
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