Hi Experts,
I loaded a 3d image into a 3d texture. Using clipping planes, I saw that the cube was hollow from the inside. Only the cube borders showed data. The 3D data is OK. Can anybody give me a clue?
Here is how I attached the 3D texture
glActiveTextureARB(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_3D, TEXTURE_VOL);
glTexImage3D( GL_TEXTURE_3D, 0, GL_Luminance, 256, 256,_Depth, 0, GL_Luminance,
GL_UNSIGNED_BYTE, data);
glTexParameterf(GL_TEXTURE_3D, GL_TEXTURE_WRAP_S, GL_Clamp);
glTexParameterf(GL_TEXTURE_3D,GL_TEXTURE_WRAP_T, GL_Clamp);
glTexParameterf(GL_TEXTURE_3D,GL_TEXTURE_WRAP_R, GL_Clamp);
glTexParameterf(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameterf(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); //GL_REPLACE);
glEnable (GL_TEXTURE_3D);
Thanks 