commit 805a727d262f3a85e619a1cb00735a05f9f63cb4
author Brian Osman <brianosman@google.com> Wed May 02 15:40:20 2018 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Wed May 02 20:09:38 2018 +0000
tree 0cd210b23f16c372faf474d386041bdf95265453
parent 97b48a9c7cbf2e8a5f1faf081084ddf706b88ac1

Add toggle for 'real' vs. 'fake' perspective in Viewer

Real perspective draws content with perspective applied. Fake
perspective rasterizes in ortho, then stretches the image by the
perspective matrix.

Change-Id: I738cd379f9a58b965469ef8a57fb2dfd597fda10
Reviewed-on: https://skia-review.googlesource.com/125442
Commit-Queue: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>

tools/viewer/Viewer.h

diff --git a/tools/viewer/Viewer.h b/tools/viewer/Viewer.h
index be35a88..d843946 100644
--- a/tools/viewer/Viewer.h
+++ b/tools/viewer/Viewer.h
@@ -102,6 +102,7 @@
     void changeZoomLevel(float delta);
     void preTouchMatrixChanged();
     SkMatrix computePreTouchMatrix();
+    SkMatrix computePerspectiveMatrix();
     SkMatrix computeMatrix();
     SkPoint mapEvent(float x, float y);
 
@@ -158,7 +159,12 @@
     // identity unless the window initially scales the content to fit the screen.
     SkMatrix               fDefaultMatrix;
 
-    bool                   fPerspective;
+    enum PerspectiveMode {
+        kPerspective_Off,
+        kPerspective_Real,
+        kPerspective_Fake,
+    };
+    PerspectiveMode        fPerspectiveMode;
     SkPoint                fPerspectivePoints[4];
 
     SkTArray<std::function<void(void)>> fDeferredActions;