glPushMatrix();
glEnableClientState(GL_VER
glEnableClientState(GL_COL
glEnable(GL_TEXTURE_2D);
glEnableClientState(GL_TEX
glTexCoordPointer(2, GL_SHORT, 0, texCoords);
glVertexPointer(3, GL_FIXED, 0, vertices);
glColorPointer(4, GL_FIXED, 0, colors);
//if i comment out this line, the object is not show on screen
for (int side = 0; side < 6; ++side)
{
glBindTexture(GL_TEXTURE_2
glDrawElements(GL_TRIANGLE
}
glDisableClientState(GL_VE
glDisableClientState(GL_CO
glDisable(GL_TEXTURE_2D);
glDisableClientState(GL_TE
glPopMatrix();
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if you don't want to use colors than get rid of this line:
glEnableClientState(GL_COL
and of course
glDisableClientState(GL_CO
than you should be able to bind textures without using the colorPointer .....basically by ONLY removing the line glColorPointer(4, GL_FIXED, 0, colors); from your e.g above, you are telling OpenGL that you are using a color array(glEnableClientState(
hope that helps
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by: aqua9880Posted on 2005-10-12 at 12:31:37ID: 15072004
glColorPointer is only one way of going about it. OpenGL is a giant state machine. It churns through in a state and when you call functions like colorpointer it gives it a state of variance to apply your texture to. All this does in the long run is set things up for glBindTexture to operate. Its kind of like before you can use a while loop you have to give it some form of prior initilization.
The concept is the same through all of openGL... before you can apply a light you have to define your lighting, before you can develope 3D perspective you have to specify your viewing window as perspective instead of 2d ortho. *shrugs* To really get an understanding you can always look at the header files and get into some of the news groups where people live that helped develope openGL but to get a working knowledge all you need to know is...
...You must define certain things before using other things. If you never define it, you can't use it.
~Aqua