User manual ASUS V5200

[. . . ] User's Manual R AGP-V5200 Windows NT Workstation Graphics Accelerator The Ultimate Windows NT Workstation Graphics Accelerator · · · · · 1 R ASUSTeK COMPUTER INC. Copyright © 1998 ASUSTeK COMPUTER INC. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. ASUS PROVIDES THIS MANUAL "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. [. . . ] This is the OpenGL version number that can also be queried by an OpenGL application at run-time. Applications will do this to determine what functionality they can expect to be provided by the implementation. Full OpenGL version 1. 1 is supported by ASUS's ICD. This release reports 1. 1. 23, where the last two digits identify the ICD internal release number (increases with every release). 18 · · ASUS AGP-V5200 · · · Hardware Chip Name For information only. This reports the name of the chipset on the board, such as 3Dlabs GMX2000. Clock Speed For information only. This reports the speed, in MHz, at which the graphics chip is running. Depth/Stencil For information only. This reports the total amount of memory used by auxillary buffers for use in hardware hidden surface removal (z-buffering) and masking/clipping (stencil and GID planes). Texture Memory For information only. This reports the total amount of graphics card memory available for storing texture maps -- after allowing for full screen front, back and depth buffers. Smaller desktop color depths and/or screen resolutions will free up more graphics card memory for texture use increasing the amount available for non-swappable textures (refer to the notes later on the texture memory manager). The Ultimate Windows NT Workstation Graphics Accelerator · · · · · 19 Setup Gamma Adjustment Gamma adjustment affects the entire screen display. The default gamma value is 1. 0 and the allowable range of floating point values is from 0. 3 to 4. 0. Options Export High Resolution Single Buffer Formats When this option is selected, it will enable the driver to support screen resolutions where only single buffered OpenGL applications are hardware accelerated (because at higher resolutions, there is not enough graphics board memory to support double buffered OpenGL applications). This prevents a screen resolution to be selected, which will result in OpenGL applications that use double buffered modes to be unaccelerated. This option should be selected by users who wish to run 2D applications at the highest available resolutions. Disable PCI Disconnect Higher 2D graphics performance can be achieved by using PCI Disconnect. However, this feature can sometimes adversely affect the performance of other devices, such as modems and sound cards. Select this option if you are experiencing problems with the performance of other devices. 20 · · ASUS AGP-V5200 · · · OpenGL Page Advanced Options Number of DMA Sub Buffers Each DMA buffer is subdivided into sub-buffers, which are used in conjunction with an Interrupt DMA mechanism to reduce latency in the system. The number of sub-buffers can be set here. Setting it to 2 will disable the interrupt mechanism. Wait For VBlank Smooth animation of 3D applications can be achieved by rendering to an offscreen window/desktop sized color buffer and copying or swapping the contents to the displayable front buffer at the completion of each frame. Enabling this option prevents tearing of the display by synchronizing the swap of the back and front buffers to the vertical blank retrace interval of the monitor display. Leave this option unselected if the highest rendering frame rates of a double buffered application are desired (i. e. , not locked to sub-multiples of the current display refresh rate). The Ultimate Windows NT Workstation Graphics Accelerator · · · · · 21 Application Support Wireframe MCAD Selecting this option will give the best performance for wireframe MCAD applications on the ASUS AGP-V5200. For most other OpenGL applications, clearing this option will give increased performance. SoftImage Version 3. 51/3. 7 Version 3. 51/3. 7 of SoftImage requires this to be set to ensure the correct operation on the ASUS AGP-V5200. Changing this option requires a restart of the system. 22 · · ASUS AGP-V5200 · · · OpenGL Texturing and Extensions Efficient Use of Multiple Textures OpenGL applications that render primitives with multiple texture maps will achieve much higher performance by not invoking the different textures in immediate mode. There are two alternative options for efficient switching between multiple textures. The first and much preferred option is to use the OpenGL texture object functionality. [. . . ] In this case, interrupts are working, all DMA buffers have been allocated and the PCI bus is cache coherent. The Ultimate Windows NT Workstation Graphics Accelerator · · · · · 27 Known Anomalies and Restrictions OpenGL · On some machines, the use of AGP DMA with the ASUS AGP-V5200 may cause a crash when trying to run OpenGL applications. AGP DMA can be disabled by setting the registry variable HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\glint\Device0\ GlintDMA. UseAGP to 0. A mode change after running MultiGen Creator Version 2. 0 for the first time can hang the system and/or corrupt title bar text. This problem is still under investigation. [. . . ]