[Plib-users] transparent material with texture ?

[Marc E. <ma...@fa...>]

I'm trying to render an object with a bmp texture (no alpha) and a
tranparent material associated to it, but I can't get the material
properties to be mixed with the texture. The object is displayed with
the texture but with no transparency or any color for the material. What
is the right way to do it ?

The state setting are:

topo1 -> setTexture ( "sat.bmp",0,0 );
 topo1 -> enable (GL_TEXTURE_2D);
 topo1 -> disable (GL_LIGHTING);        //the texture gives the shade
 topo1 -> enable (GL_COLOR_MATERIAL);
 topo1 -> disable (GL_CULL_FACE);
 topo1 -> setColourMaterial (GL_AMBIENT_AND_DIFFUSE);
 topo1 -> setMaterial (GL_SPECULAR, 0.1, 0.1, 0.5, 0.9);
 topo1 -> setMaterial (GL_AMBIENT, 0.5, 0.3, 0.3, 0.7);
 topo1 -> setMaterial (GL_DIFFUSE, 0.5, 0.3, 0.3, 0.7);
 topo1 -> setShininess (0.5);
 topo1 -> enable (GL_BLEND);
 topo1 -> enable (GL_ALPHA_TEST);
 topo1 -> setAlphaClamp (0.001);  /* 0..1 */
 topo1 -> setTranslucent();

with a blending function:
 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

Have I done something wrong ?


Marc.

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