commit 3ff0bfdd144bba3b023eda8c49b25fb0d0de8653
author Romain Guy <romainguy@google.com> Mon Feb 25 14:15:37 2013 -0800
committer Romain Guy <romainguy@google.com> Mon Feb 25 15:01:58 2013 -0800
tree cfc94ccf18fb1bfaaefb1241c700900a32276acf
parent 01d159d88a51c44d7e282e07b834535e5b0e8bd1

Add new property to debug non-rectangular clip operations

This change adds a new property called "debug.hwui.show_stencil_clip"
that accepts the following values:

- "highlight", colorizes in green any drawing command that's tested
  against a non-rectangular clip region
- "region", shows the non-rectangular clip region in blue every time
  it is used
- "hide", default value, nothing is shown

Change-Id: I83c8602310edc4aaeb8b905371cdd185b17d32b5

libs/hwui/Caches.cpp

diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index 88f1d83..5befb95 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -91,6 +91,7 @@
 
     debugLayersUpdates = false;
     debugOverdraw = false;
+    debugStencilClip = kStencilHide;
 
     mInitialized = true;
 }
@@ -132,6 +133,7 @@
 bool Caches::initProperties() {
     bool prevDebugLayersUpdates = debugLayersUpdates;
     bool prevDebugOverdraw = debugOverdraw;
+    StencilClipDebug prevDebugStencilClip = debugStencilClip;
 
     char property[PROPERTY_VALUE_MAX];
     if (property_get(PROPERTY_DEBUG_LAYERS_UPDATES, property, NULL) > 0) {
@@ -148,8 +150,23 @@
         debugOverdraw = false;
     }
 
+    // See Properties.h for valid values
+    if (property_get(PROPERTY_DEBUG_STENCIL_CLIP, property, NULL) > 0) {
+        INIT_LOGD("  Stencil clip debug enabled: %s", property);
+        if (!strcmp(property, "hide")) {
+            debugStencilClip = kStencilHide;
+        } else if (!strcmp(property, "highlight")) {
+            debugStencilClip = kStencilShowHighlight;
+        } else if (!strcmp(property, "region")) {
+            debugStencilClip = kStencilShowRegion;
+        }
+    } else {
+        debugStencilClip = kStencilHide;
+    }
+
     return (prevDebugLayersUpdates != debugLayersUpdates) ||
-            (prevDebugOverdraw != debugOverdraw);
+            (prevDebugOverdraw != debugOverdraw) ||
+            (prevDebugStencilClip != debugStencilClip);
 }
 
 void Caches::terminate() {