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+--- Thread: multitexturing with interleaved-arrays? (/thread-7317.html)
multitexturing with interleaved-arrays? - <seb> - Feb 10, 2003 09:36 AM
hi!
i was drawing an interleaved array with a single
texture, everything was fine and working, until
i got the idea of using multitexturing.
so i was defining two textures:
- - - - - - - - - - - - - - - -
glActiveTextureARB(GL_TEXTURE0_ARB);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, id1);
glActiveTextureARB(GL_TEXTURE1_ARB);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, id2);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);
glTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, 2);
- - - - - - - - - - - - - - - -
and rendered my terrain as before:
- - - - - - - - - - - - - - - -
glInterleavedArrays( GL_T2F_N3F_V3F, 0, VertexArray );
glDrawArrays( GL_TRIANGLE_STRIP, 0, NumVertices );
- - - - - - - - - - - - - - - -
of course, the desired effect didnt appear. i need to
call something like:
- - - - - - - - - - - - - - - -
glMultiTexCoord2fARB(GL_TEXTURE0_ARB, 0.5, 1.0);
glMultiTexCoord2fARB(GL_TEXTURE1_ARB, 0.5, 1.0);
- - - - - - - - - - - - - - - -
but calling this function would mean to go away from my
nice and fast vertex array, go back to working on every
vertex on its own ...
or is there a way to use an interleaved-array together with
glMultiTexCoord2fARB ??
:))
sebastian
multitexturing with interleaved-arrays? - Mark Levin - Feb 10, 2003 09:57 AM
You can specify a seperate vertex array for each texture unit with gClientActiveTextureARB() (see the end of chapter 9 in the red book).
multitexturing with interleaved-arrays? - <seb> - Feb 10, 2003 10:08 AM
sorry, i cant find any docu on this .. dont have the red book either!
can you be a little more specific please? :)
multitexturing with interleaved-arrays? - <seb> - Feb 10, 2003 10:18 AM
ah, i finally found sth and tried a little,
and finally its working.
thanks again!!
seb