WGF11 Clipping

Note  This content applies to the Windows Logo Kit (WLK). For the latest information using the new Windows Hardware Certification Kit (HCK), see Windows HCK User's Guide on the Windows Hardware Dev Center.

Type: Automated Test


The WGF Clipping test verifies D3D graphics driver/hardware conformance for geometry clipping features that are not specifically tested elsewhere.


The following describes the Clipping Conformance Plan:

  • Quad rendered to render target

  • Each RT pixel tested programmatically against expected value

  • Clipdist, Culldist values cycled independently for each vertex, to test shaded clipping

  • W values manipulated independently for each vertex, to test fixed clipping

  • Tests multisample with fixed sample pattern and potential deviation

  • Might need some uncertainty epsilon for floating-point precision issues

  • Consider non perspective correct attribute interpolation (though this may be better tested in rasterization tests)

  • Be particularly aware of guardband and z-clip

  • Guardband may hide some clipping problems

  • Z-clipping has no guardband protection

Run Time: 15 minutes
Log File: WGF11Clipping.xml
System Restart Required: No
Test Category: Display Adapter and Chipset
Supported operating systems for Logo or Signature testing:
  • Windows 7

  • Windows Server 2008 R2

  • Windows Vista

  • Windows Server 2008

  • Vista Service Pack 2 (KB948465) (Vista Only)

  • Platform Update for Windows Vista (KB971644) (Vista Only)

Program: wgf11clipping.exe.


Software Requirements

The test tool requires the following software:

  • Supported operating system (see list above)

  • Software components included with the device that is being tested

Hardware Requirements

The test tool requires the following hardware:

  • Device to be tested

  • Computer that meets the minimum software requirements

  • Windows keyboard

  • Two-button pointing device

  • Color display monitor capable of at least 1024 by 768 resolution, 32-bits per pixel, 60 Hz

  • Hard drive with a minimum of 20 GB available on partition C:


The test tool runs on the following processor architectures:

  • x86

  • x64

Running the Test

All test cases return PASS or FAIL. Review the test results in the log file for specific details about failures.

Some test cases my skip if run using feature level 10.0 or feature level 10.1

Command Syntax

Command option Description


Without any options, the test enumerates devices.


Where XX.X is the Feature Level the test will run at, 10.0, 10.1, or 11.0


Code Tour

File Manifest

File Location




Test Assertions

Test enforcing Windows Logo Requirement: Graphics-0076



Build date: 9/14/2012

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