1. slow, slow, slow
I made some speed tests with OpenGL (NT) and it looks like something's
not quite right.
The test resolution was 1024 x 768, 16 bit color mode and my window had
almost the size of the screen (maximized MDI child window).
I use double buffering.
This is what I do in a cycle (practically nothing):
glClear( GL_COLOR_BUFFER_BIT ); //1
This is the result I get for 10 cycles:
a) With both, 1 and 2:
b) With 1 but not 2:
c) With 2 but not 1:
d) With none of them:
10 ms (even less)
The conclusion is that SwapBuffers() takes about 30 ms and clearing the
color buffer, another 16 ms.
I am using a P166 with 64M of RAM and mach64 graphics card.
Considering that in order to have a rendered image, I have to call both
1 and 2, I can only have below 20 frames/s. It looks to me that there is
no way to have a decent speed with OpenGL in software only.
I thought that the 2D operations are hardware accelerated but
considering the results this is definitely not true.
Is this the normal speed of OpenGL? Is there any way to make it run
2. Lightwave Artists needed
3. canvas->pixel is slow slow slow...
5. JPEG + DELPHI = sloooow, slow slow slow
6. Resizing dialogs
7. System getting slower and slower
8. Newbie: Gimp runs slow, text looks bad, plot is slow to print
9. very slow starting Illustrator 7 = normal?
10. Prob: Illustrator slow to load.
11. Illustrator 6.0 Slow on MAC???