Once the buffer returned by Windows is not newly allocated, it may contain legacy images from previous capturing attempts. This usually is not a problem, as implementations other than ScreenCapturerWinDirectx paint each pixel on the frame. But due to the one capturer per monitor design of ScreenCapturerWinDirectx, part of the frame may not be covered by any DxgiOutputDuplicator, and cause the legacy image to be shown. So a very simple fix is to clear the DesktopFrame in DxgiFrame. BUG=708766 Review-Url: https://codereview.webrtc.org/2827983007 Cr-Commit-Position: refs/heads/master@{#17847}
Name: WebRTC URL: http://www.webrtc.org Version: 90 License: BSD License File: LICENSE Description: WebRTC provides real time voice and video processing functionality to enable the implementation of PeerConnection/MediaStream. Third party code used in this project is described in the file LICENSE_THIRD_PARTY.