more than one texture with glDraw* ?
Author
hello,
i''ve a problem. i draw a model from 3DS with glDrawElement or glDrawRangeElement. this model has many textures and materials.
i put all the datas into a display list.
this is how i do
glNewList
for( int gr=0; gr< groupe_nb; gr++){
glPushMatrix();
glPushClientAttrib( color, texture, lighting);
glMaterialfv...
glBindTexture( gr);
glDrawElement( GL_TRIANGLES, number, GL_UNSIGNED_INT, &index[...]);
// i don''t remember all, sorry
glPopClientAttrib();
glPopMatrix();
}
glEndList();
all my model is drawn correctly, but i only have one texture for all !!
does anyone know why ?
thanx in advance
Use glDrawElements for each mesh in your model, a mesh being a series of triangles with one (or 2 if you use multitexturing) texture/material.
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- outRider -
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- outRider -
Author
that''s what i do (as I think in all cases).
But only one texture is drawn.
normally, if you specify a texture for a part of an array that you draw, and do so on for each time the texture change, does that let opengl change it normally ?
ie:
for all meshes do
glBindTexture( texid)
glDrawRangeElement...
end for
this must change the texture, mustn''t it ?
thanx
But only one texture is drawn.
normally, if you specify a texture for a part of an array that you draw, and do so on for each time the texture change, does that let opengl change it normally ?
ie:
for all meshes do
glBindTexture( texid)
glDrawRangeElement...
end for
this must change the texture, mustn''t it ?
thanx
With multitexturing you first do glBind with the first texture unit active, then glBind again the new texture with the second texture unit active. Then glDrawElements.
Sorry, I just reread your problem. If you call glBind for each new textured set of triangles and you only get the first texture you glBinded then you're not passing a proper TexID to glBind. Either your texture was not properly created or something else went wrong.
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- outRider -
[edited by - outRider on March 27, 2002 11:06:33 PM]
Sorry, I just reread your problem. If you call glBind for each new textured set of triangles and you only get the first texture you glBinded then you're not passing a proper TexID to glBind. Either your texture was not properly created or something else went wrong.
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- outRider -
[edited by - outRider on March 27, 2002 11:06:33 PM]
what about an interleaved array
store the vertex and uv texturing coordinates in one array and render it
store the vertex and uv texturing coordinates in one array and render it
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