WDDM PresentStats - Present Statistics Test

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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

Overview

The WDDM PresentStats test verifies that drivers work correctly with the operating system to provide reliable presentation statistics to applications.

Details

The WDDM PresentStats - Present Statistics test verifies that the following scenarios work:

  • For multihead devices, presentations on 1 swap chain do not affect the present IDs for other swap chains.

  • The QPC times reported for v-blanks increase at a rate approximately equal to the refresh rate of the monitor that is connected to the corresponding output head.

  • GPU-bound applications that spin calling the present API (for flipping) should never miss a frame.

  • The latency reported by the presentation statistics increase linearly with the maximum number of queued presents (for GPU-bound applications).

  • v-blank IDs reported through the present statistics API agree with the WaitForVerticalBlank API.

  • Present statistics work for immediate flips, and flips occur during a vertical blank.

Drivers must reliably report vertical-blank interrupts and correctly support flipping to pass this test.

Run Time: 20 minutes

System Restart Required: No

Supported operating systems for Logo or Signature testing:

  • Windows 7

  • Windows Server 2008 R2

  • Windows Vista

Requirements

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

  • 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:

Processor

  • x86

  • x64

Test Assertions

GRFX-69 Display adapter or chipset complies with the DirectX DDK specification.

Test Assertion GUID: 7af8c5fb-d668-426c-a663-5c27038e8a01

Windows Logo Program: GRAPHICS-0015 Display adapter or chipset complies with the DirectX DDK specification

 

 

Build date: 9/14/2012