   glBlitFramebufferEXT is killing my FPS
  I'm rendering my scene to a multisampled framebuffer and then i blit it to thw window's default framebuffer.The problem is that it's killing my FPS, it mvoes really slowly.Overall it works, i have a multisampled image on the screen but it moves to slow.Is it because of my hardware, or i did something wrong?void COpenGLDriver::BeginScene(){if(lpScreen)lpScreen->HandleScreen();glClearColor(0,0,1,1);glClear(GL_COLOR_BUFFER_BIT);lpExtension->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFrame);}void COpenGLDriver::EndScene(){lpExtension->glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, NULL);}void COpenGLDriver::Present(RECT *lpSrcRect, RECT *lpDstRect){LQSCREENDATA mData;lpScreen->GetScreenData(&mData);lpExtension->glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, mFrame);lpExtension->glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, NULL);lpExtension->glBlitFramebufferEXT(lpSrcRect ? lpSrcRect->left : 0, lpSrcRect ? lpSrcRect->top : 0,lpSrcRect ? lpSrcRect->right : mData.mWidth, lpSrcRect ? lpSrcRect->bottom : mData.mHeight,lpDstRect ? lpDstRect->left : 0, lpDstRect ? lpDstRect->top : 0,lpDstRect ? lpDstRect->right : mData.mWidth,lpDstRect ? lpDstRect->bottom : mData.mHeight,GL_COLOR_BUFFER_BIT, //I removed the depth and stencil buffer,   //it moves a bit faster, but in full screen mode FPS go really low.GL_NEAREST); //I also tried GL_LINEAR, same thinglpExtension->glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, NULL);lpExtension->glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, NULL);SwapBuffers(mData.hDC);}If i blit from a non-multisampled framebuffer to the default framebuffer, it is just a little bit faster, hardly noticeable.