float squareVertices[12] = {0,0,-10,
-5,0,-10,
-5,-5,-10,
0,-5,-10};
float squareIndices[4] = {1,2,3,4};
glEnableClientState( GL_VERTEX_ARRAY );
glVertexPointer( 3, GL_FLOAT, 0, squareVertices );
//glDrawArrays( GL_POLYGON, 0, 4 );
glDrawElements( GL_POLYGON, 4, GL_INT, squareIndices );
glDrawElements
Author
I've been having trouble with getting glDrawElements to work. In the below code, glDrawArrays works (draws a square), but the glDrawElements won't draw anything. I've tried 0-based and 1-based indices. Here's the code:
You should really look up glDrawElements in some documentation. There are three mistakes in your code
- Indices are 0-based.
- Check what parameters are valid for glDrawElements.
- Make sure the index array matches the type you pass to glDrawElements.
Author
Yep, two stupid mistakes, changed to unsigned ints for the array and paramater (and switched back to 0-based indices) and it works! Thanks Bob.
karg
karg
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