What is it?
TestOpenGL it is the 3D graphics test. Uses OpenGL and works on a platform Win32. The test shows general productivity of a system and relation of an 3D accelerator from the processor. But to foresee this relation it is possible and on programm emulation, it also will show weak places of a system.
About principles of the test.
The test consists of 4 stages:- Without filtering and with small texture. (is good and in programm emulation, on hardware flies).
- With trilinear filtering. Remaining without change. (falling of speed on the order at a programm emulation, and minor on hardware. Though on some accelerators, for example Riva 128, the speed on the contrary will increase)
- All as in first, but with large texture 512x512. (here all depends on quantity of local videomemory on an accelerator. The fresh drivers for support textures more than 256x256 are necessary for accelerators of a series Voodoo)
- All as in first, but in triangles in 9 times more. (this test shows bandwidth and in basic depends on the processor. So Pentium 100 with a very steep accelerator can show an outcome worse, than CeleronA 400. It testifies that the system with an accelerator not on all uses its capabilities. For example, Pentium 133 with Riva 128 uses capabilities of an accelerator only on 25 %)
The test is started in a small window 300x300. It allows to use hardware acceleration on videocards with 2Mb of memory. At such sanction can be received, that the system with the very fast processor, but without 3D accelerator on the test 1 will give the same productivity, as a system with much weaker processor and with 3D accelerator. It is not terrible, as the test is intended for show of "narrow" and "broad" places of a system. As gorges it is possible to consider:
The falling of speed on the test 4 in some tens time concerning the test 1, is the weak processor The falling on the order with 1 on 2, it is usual for programm emulation (Software) Falling of time in two with 1 on 3, it at shortage or too slow video of memory
Additional capabilities.
All outcomes are noted in a file Bench.txt. If it is not difficult, you can send this file to the author on the Email which has been mentioned below, for a data base.
There is a capability to start the program with a key [/bpp], where bpp is битность. It is useful for at whom the acceleration is supported in different bits per pixel depth (for example, Riva TNT supports 16/32 bpp) and whom laziness go to the control panel for change bits per pixel depth. Is otherwise used current depth. If you very much would like to test in higher resolution and on a full screen, it is necessary to you to correct configuration in a file "3dmovie.ini":
gl_Width [width]
gl_Height [height]
gl_BitsPerPixel [bpp]
gl_FullScreen True
But take into account, that in a programm mode the speed essentially will fall at high resolutions. Generally, for a programm mode it is better to use opengl32.dll from SGI, it in 1.5 times faster and can use MMX.
Known problems.
For accelerators of a Voodoo series and some other, fresh drivers need for using textures more than 256x256. In Windows 95 bits per pixel at recording in Bench.txt is substituted on [0], it is connected with Windows 95, if you refer Bench.txt to author, correct in Bench.txt on yours depth. Also, if you use not Windows NT, write frequency of the processor. Coordinates.
Page of the test in the Internet.
The mail Internet Address.
This test has created by Creater3D with the purpose of the analysis of speeds of different systems, for the project "3D Movie".