commit 7c64798b3d0c650b32f243a20f6a8e95e06f8c2c
author Jim Van Verth <jvanverth@google.com> Fri Oct 23 12:47:57 2020 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Fri Oct 23 17:30:15 2020 +0000
tree 1c22e1e11698f2a16e08af42ba052f3d6892b50b
parent acdc28340480c58b402712e6d75f33ef73ad43a8

Add control to toggle immediate/delayed MTLDrawable acquisition

Change-Id: Ia1b57dc4af65e7625659c147077b5e47b09b6b62
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/329178
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>

tools/viewer/Viewer.cpp

diff --git a/tools/viewer/Viewer.cpp b/tools/viewer/Viewer.cpp
index d5ab9af..7334bf1 100644
--- a/tools/viewer/Viewer.cpp
+++ b/tools/viewer/Viewer.cpp
@@ -414,13 +414,20 @@
         this->fZoomWindowFixed = !this->fZoomWindowFixed;
         fWindow->inval();
     });
-    fCommands.addCommand('v', "VSync", "Toggle vsync on/off", [this]() {
+    fCommands.addCommand('v', "Swapchain", "Toggle vsync on/off", [this]() {
         DisplayParams params = fWindow->getRequestedDisplayParams();
         params.fDisableVsync = !params.fDisableVsync;
         fWindow->setRequestedDisplayParams(params);
         this->updateTitle();
         fWindow->inval();
     });
+    fCommands.addCommand('V', "Swapchain", "Toggle delayed acquire on/off (Metal only)", [this]() {
+        DisplayParams params = fWindow->getRequestedDisplayParams();
+        params.fDelayDrawableAcquisition = !params.fDelayDrawableAcquisition;
+        fWindow->setRequestedDisplayParams(params);
+        this->updateTitle();
+        fWindow->inval();
+    });
     fCommands.addCommand('r', "Redraw", "Toggle redraw", [this]() {
         fRefresh = !fRefresh;
         fWindow->inval();