/// <summary>
/// Using glDrawArray could be faster.
/// </summary>
/// <param name="buffer"></param>
/// <param name="elementCount"></param>
private unsafe void DrawLinesFast(PositionColored *buffer, int elementCount)
{
//TODO:
//Gl.VertexPointer(3, VertexPointerType.Float, sizeof(int), new IntPtr(buffer));
//Gl.ColorPointer(4, ColorPointerType.UnsignedByte, sizeof(Vector3), new IntPtr(buffer + sizeof(Vector3)));
//Gl.DrawArrays(PrimitiveType.Lines, 0, elementCount * 2);
}
public override unsafe void DrawLines(PositionColored *buffer, int elementCount)
{
////////////Option1
DrawLinesSlow(buffer, elementCount);
/////////////Option2 and option2 may be better
//DrawLinesFast(buffer, elementCount);
}
private unsafe void DrawLinesSlow(PositionColored *buffer, int elementCount)
{
//FIXME: The lines drawn by this function are all black.
//GL.glDisable(2929);//depth
//GL.glDisable(2896);//lighting
GL.glDisable(3553); //texture
//GL.glRenderMode(7168);
GL.glBegin(1); //lines
for (ColoredLine *p = (ColoredLine *)buffer, end = &p[elementCount]; p < end; p++)
{
GL.glColor3b(p->R1, p->G1, p->B1);
GL.glVertex3fv((float *)&p->Pos1);
GL.glColor3b(p->R2, p->G2, p->B2);
GL.glVertex3fv((float *)&p->Pos2);
}
GL.glEnd();
GL.glColor3f(1, 1, 1);
//GL.glEnable(2929);
//GL.glEnable(2896);
GL.glEnable(3553);
}
public override unsafe void DrawLines(PositionColored *buffer, int elementCount)
{
DrawBufferedLines(buffer, elementCount);
}
public abstract unsafe void DrawLines(PositionColored *buffer, int elementCount);
