TOPIC
Power Computing provided the information in this article and it was deemed accurate as of 14 November 1997. Apple Computer, Inc. is not responsible for its content. This article is being provided as is and will not be updated in the future.
DISCUSSION The following is the release notes documentation prepared by ATI and distributed with the 3D software. 1) QuickDraw 3D 1.5 will attempt to maintain hardware rendering in low video memory conditions by showing surfaces and 3D objects without textures. This would manifest as blank looking 3D objects and surfaces in the applications window. As you increase the size of a 3D accelerated window, additional memory is required. Once no more memory is available, QuickDraw 3D will allow an application to drop textures and continue to run. If you continue to increase the window size, beyond this point, the 3D Rage II drivers must pass rendering control back to software. When this occurs, the textures will reappear and hardware acceleration will be disabled. The application Gerbils 1.0.3 can be used to demonstrate this behavior. 2) The ATI driver reports to QuickDraw 3D that it does not support a deep-z (³ 24 bits) buffer. If an application tries to use a deep-z buffer , our driver will not reject the request. However, these applications, such as the Mutatron and Calc^3, may then display incorrectly rendered 3D objects. 3) Please note that the 3D hardware acceleration will be disabled and QuickDraw 3D will revert to software rendering if there is insufficient memory or if the user selects 256 colors. Machines Affected: All |
||||||
| Document Information | |
| Product Area: | Computers |
| Category: | Power Computing Corp. |
| Sub Category: | Third-Party Info |
| Keywords: | kpowercc |
Copyright © 2000 Apple Computer, Inc. All rights reserved.