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, 11 insertions, 0 deletions

diff --git a/libs/hwui/Layer.h b/libs/hwui/Layer.h
index ccf1da5539aa..0e00191d8654 100644
--- a/libs/hwui/Layer.h
+++ b/libs/hwui/Layer.h
@@ -42,6 +42,8 @@ namespace uirenderer {
 // Forward declarations
 class OpenGLRenderer;
 class DisplayList;
+class DeferredDisplayList;
+class DeferStateStruct;
 
 /**
  * A layer has dimensions and is backed by an OpenGL texture or FBO.
@@ -271,6 +273,9 @@ struct Layer {
         return transform;
     }
 
+    void defer();
+    void flush();
+
     /**
      * Bounds of the layer.
      */
@@ -379,6 +384,12 @@ private:
      */
     mat4 transform;
 
+    /**
+     * Used to defer display lists when the layer is updated with a
+     * display list.
+     */
+    DeferredDisplayList* deferredList;
+
 }; // struct Layer
 
 }; // namespace uirenderer