   opengl slower than dx9
  Hi, i've noticed that on my graphic board ( gforce4 ti4400 )opengl is slower than dx9 , why is that ? i have the latest drivers installed, and the gap is clearly visible running prgrams like deep explorations and such.Do someone experienced similar problems ?   
  Well, I think D3D uses more hardware optimizations off-the-shelf, whereas OpenGL often require the application programmers to activate less-common functions through the use of extensions and such...As I understand it, D3D uses indexed, lockable vertex buffers as its main method of rendering, whereas for OpenGL, the same method requires use of extensions. You'll probably have to do more work with OpenGL to enable all the speed enhancements, and it's up to the programmer to implement it.I have seen the opposite many times as well, where D3D programs where outperformed by OpenGL competitors, so the door swings both ways I guess...   ;  I bet this thread will not live more than 24 hours before a moderator closes or exterminates it.   ;  there should really be no good reason for opengl to be slower other than developers not making good use of it.   ;  It may be lazy OGL developers not making use of extensions, or it may be something weird in the driver.It's really not possible to say, without knowing exactly what's going on.   ;  some graphic cards sipmly have better support for DX, others are better for openGL...   ;  a) An API can only be as good as the programmer who is using it.b) Please don't necro threads.Closed.