Re: [Dev-C++] "win32 api + opengl" uses too much CPU resourses (performance problem)

Your program has a busy loop that tries to repaint the screen as often as
it can. It will consume all processor capacity it can. If it "only"
consumes 50%, that is because you have two processors, or a dual-core or a
processor with hyper-threading.

To reduce the processor load, you should only repaint the display after
the scene has changed or after you get a WM_PAINT message.

/pwm

On Thu, 8 Nov 2007, Jessica Chen wrote:

> When I run the .exe file whose function is to display OpenGL in win32
> api controls, I found the CPU resource is used by 50% (showed in
> Windows Task Manager).  My computer is Pentium CPU 3.40GHz.
>
> I attached a sample code here to see if anyone can help me to solve
> the "performance" problem.  I would like to say thanks in advance.
> :-)
>