Release 178 Notes - Nvidia's Download site!!
Release 178 Notes - Nvidia's Download site!! Release 178 Notes - Nvidia's Download site!!
: Known Product LimitationsNo Antialiasing of 3DMark03 Image Quality ScreenCaptures• ProblemAfter enabling antialiasing from the NVIDIA Properties page, 3DMark03screen captures—obtained using the application’s screen capture function—might not be antialiased.• ExplanationThis is not an NVIDIA bug, but rather a result of different methods used torender antialiased images.Depending on a combination of factors, the driver may take advantage of theNVIDIA hardware’s ability to bypass the front buffer while rendering anantialiased image. In this case, the front buffer does not contain antialiaseddata, so if an application takes data from the front buffer—as is the case with3DMark03’s Image Quality screen captures—then the resulting image is notantialiased.To accommodate applications that request use of the front buffer, theNVIDIA software can provide the antialiased data in a buffer to theapplication. Since this negates the advantages of the NVIDIA hardwarecapability, this support is enabled only when antialiasing is enabled withinthe application, and not from the NVIDIA control panel.In all cases when antialiasing is enabled, screen images as well as screen capturesobtained using the Print Screen key are always antialiased.26 NVIDIA Corporation
NVIDIA Quadro Professional Drivers, Release 178 Version 178.26Windows XP/2000 Issue with Settings Tab MonitorPositioning• ProblemIn the Windows Display Properties > Settings tab, the secondary monitorscannot be positioned directly above monitor #1 without snappinghorizontally to a position diagonal to monitor #1.• When the Problem OccursThe problem occurs when four monitors are connected to the graphicsadapter card, but only two of them are enabled.• Cause and WorkaroundThis is a Microsoft—not an NVIDIA—bug, and there is no workaround tocorrect the positioning of the monitor icons. However, the actual positioningof the displays on the desktop can be corrected using the nView DesktopManager window as follows:1 Under the Tools tab in the Desktop Manager windows, make sureAutomatically Align Displays is checked.2 In the Settings tab, position the appropriate monitor icon above monitor#1, then click Apply.The mouse cursor movement between monitor desktops will correspondto a vertical orientation of the monitors, even though the monitor icons inthe Settings tab are diagonal to each other.Note: This will be the case even if the monitor icons are deliberatelypositioned diagonal to each other.Antialiasing Problems With Certain ApplicationsAntialiasing in the NVIDIA Direct3D driver requires each new frame to berendered from scratch. This requirement adversely affects applications thatrender only that portion of the content that has changed since the last frame. Acommon symptom of this problem is geometric structures that incorrectlydisappear and re‐appear as the scene shifts.Poor Quality S-Video Output on Some TVsNVIDIA drivers differentiate an S‐video TV from a composite TV by searchingfor 75‐Ohm loads on the chrominance and luminance lines. If the driver detectsonly one such load, it assumes that it has a composite TV and drives bothchroma and luma onto that line. This approach allows both types of TV todisplay in color.Unfortunately, some S‐video TVs do not apply the correct load to both lines,causing the driver to detect an S‐video TV as a composite. The driver, in turn,sends the lower quality signal to the S‐video TV. To work around this problem,use the Control Panel to override the Auto‐select feature. This can be donefollowing these steps:NVIDIA Corporation 27
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: Known Product LimitationsNo Antialiasing of 3DMark03 Image Quality ScreenCaptures• ProblemAfter enabling antialiasing from the NVIDIA Properties page, 3DMark03screen captures—obtained using the application’s screen capture function—might not be antialiased.• ExplanationThis is not an NVIDIA bug, but rather a result of different methods used torender antialiased images.Depending on a combination of factors, the driver may take advantage of theNVIDIA hardware’s ability to bypass the front buffer while rendering anantialiased image. In this case, the front buffer does not contain antialiaseddata, so if an application takes data from the front buffer—as is the case with3DMark03’s Image Quality screen captures—then the resulting image is notantialiased.To accommodate applications that request use of the front buffer, theNVIDIA software can provide the antialiased data in a buffer to theapplication. Since this negates the advantages of the NVIDIA hardwarecapability, this support is enabled only when antialiasing is enabled withinthe application, and not from the NVIDIA control panel.In all cases when antialiasing is enabled, screen images as well as screen capturesobtained using the Print Screen key are always antialiased.26 NVIDIA Corporation
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