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Work around rounding error in GFE's mouse position scaling

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This commit is contained in:
Cameron Gutman 2020-05-26 18:19:53 -07:00
parent 0df24c76c0
commit bea625a13d
1 changed files with 8 additions and 2 deletions
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10
src/InputStream.c
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@ -506,8 +506,14 @@ int LiSendMousePositionEvent(short x, short y, short referenceWidth, short refer
holder->packet.mouseMoveAbs.x = htons(x);
holder->packet.mouseMoveAbs.y = htons(y);
holder->packet.mouseMoveAbs.unused = 0;
holder->packet.mouseMoveAbs.width = htons(referenceWidth);
holder->packet.mouseMoveAbs.height = htons(referenceHeight);
// There appears to be a rounding error in GFE's scaling calculation which prevents
// the cursor from reaching the far edge of the screen when streaming at smaller
// resolutions with a higher desktop resolution (like streaming 720p with a desktop
// resolution of 1080p, or streaming 720p/1080p with a desktop resolution of 4K).
// Subtracting one from the reference dimensions seems to work around this issue.
holder->packet.mouseMoveAbs.width = htons(referenceWidth - 1);
holder->packet.mouseMoveAbs.height = htons(referenceHeight - 1);
err = LbqOfferQueueItem(&packetQueue, holder, &holder->entry);
if (err != LBQ_SUCCESS) {