3D OpenGL Engine

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Drago

Todd: you can use the second uv map for lightmaps with vertex arrays, the easiest way to do it though is by using the multitexture GL extension.

	glNormalPointer(gl_float,0,q3\normals)  ; setup normals
	glVertexPointer(3,GL_float,0,q3\vertices) ; setup verts
	glClientActiveTextureARB(GL_TEXTURE0_ARB); ; Set the client Texture to be the first of the 8 multi textures
	glTexCoordPointer(2,GL_FLOAT,0,q3\uv[0]) ; Setup the texcord pointers for this texture
	glClientActiveTextureARB(GL_TEXTURE1_ARB); ; set the second texture to be the active one.
	glTexCoordPointer(2,GL_FLOAT,0,q3\uv[1]) ; setup the tex cord array for this texture.
	glEnableClientState(GL_TEXTURE_COORD_ARRAY); enable the array
      ; The next few lines were for turning on and off the textures so you could see them with out detail map.
; (ie only lightmap) or turn off the detail map. if they both are '1' then they are both enabled.
	If tex1=1
		glClientActiveTextureARB(GL_TEXTURE0_ARB); 
		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
	EndIf
	If tex2=1
		glClientActiveTextureARB(GL_TEXTURE1_ARB);
		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
	EndIf
... 
Some Vis stuff to do with quake3 bsps.
...
If tex1=1
			glActiveTextureARB(GL_TEXTURE0_ARB);
			glEnable(GL_texture_2d)
			glBindTexture(GL_TEXTURE_2D,(PeekInt(q3\tex,(texid*8))))
		EndIf
		If tex2=1
			glActiveTextureARB(GL_TEXTURE1_ARB);
			glEnable(GL_texture_2d)
			glBindTexture(GL_TEXTURE_2D,(PeekInt(q3\tex,(Lmap*8)+4)))
		EndIf
		If typ=1
			glDrawArrays(GL_TRIANGLE_FAN,vin,nver)
		Else typ=2
			glDrawArrays(GL_POLYGON,vin,nver)
		EndIf