Avoid multiple font cache texture uploads

Bug #8378964

This change defers drawing into layers until after the renderer for FBO0
is ready to draw. At that point, all the precaching is done which means
all glyphs can be uploaded at once in the font caches.

Change-Id: Ie1f7a7ff30f76f06fb3dbc72c7d05e66207d1ecb

1 files changed, 3 insertions, 0 deletions

diff --git a/core/java/android/view/HardwareRenderer.java b/core/java/android/view/HardwareRenderer.java
index e086f5a3586c..7918823bf583 100644
--- a/core/java/android/view/HardwareRenderer.java
+++ b/core/java/android/view/HardwareRenderer.java
@@ -428,6 +428,8 @@ public abstract class HardwareRenderer {
     interface HardwareDrawCallbacks {
         /**
          * Invoked before a view is drawn by a hardware renderer.
+         * This method can be used to apply transformations to the
+         * canvas but no drawing command should be issued.
          * 
          * @param canvas The Canvas used to render the view.
          */
@@ -435,6 +437,7 @@ public abstract class HardwareRenderer {
 
         /**
          * Invoked after a view is drawn by a hardware renderer.
+         * It is safe to invoke drawing commands from this method.
          * 
          * @param canvas The Canvas used to render the view.
          */