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Multitexturing with glDrawElements

Started by Crawl Jun 1, 2002 at 10:16 AM 2 replies 750+ views

Original Post

Jun 1, 2002 at 10:16 AM

Can someone show me how to do multitexturing with glDrawElements(). I know this question has been asked before but a forum search didn't reveal anything...

    
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, sizeof(VERTEX), m_pVertexBuffer[0].u);
glDrawElements( GL_TRIANGLES, m_pNode->m_dwPolyCount, GL_UNSIGNED_SHORT, m_pNode->m_pPolys );
glDisableClientState(GL_TEXTURE_COORD_ARRAY);

Is there any way to pass the texture coordinates for the second (or third, etc) texture layer to OpenGL....???? -Crawl [edited by - Crawl on June 1, 2002 11:17:51 AM]

LousyPhreak

Jun 1, 2002 at 10:27 AM

look at www.gametutorials.com they have quite decent tuts...

Crawl

Jun 1, 2002 at 10:48 AM

Thanx, i see their BSP tutorial uses the technique, looked there before but probably not hard enough,.....

Martee

Jun 1, 2002 at 12:37 PM

You need to do something like this ...

      
glClientActiveTextureARB(GL_TEXTURE0_ARB);
glTexCoordPointer(... lightmaps ...);


glClientActiveTextureARB(GL_TEXTURE1_ARB);
glTexCoordPointer(... texcoords ...);


glDrawElements(...);

Oh ... and make sure that you enable GL_TEXTURE_COORD_ARRAY for each texture unit.

[edited by - Martee on June 1, 2002 1:39:42 PM]

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