- glVertex2f( x*squareSize, y*squareSize );
- glVertex2f( (x+1)*squareSize, y*squareSize );
- glVertex2f( (x+1)*squareSize, (y+1)*squareSize );
- glVertex2f( x*squareSize, (y+1)*squareSize );
+
+ glTexCoord2f( 6.0, 1.0 );
+ glVertex3f ( (x+1)*squareSize, 0.0, (z+1)*squareSize );
+
+ glTexCoord2f( 1.0, 0.0 );
+ glVertex3f ( (x+1)*squareSize, 0.0, z*squareSize );