DisplayList draw operation reordering
bug:8037003
The reordering enables similar operations to draw together, minimizing the
OpenGL state change operations that go inbetween draws. Eventually, multiple
complete canvas draw operations will be merged (into a single glDrawArrays call,
for example)
Reorders DisplayList draw operations when:
-They can move backwards in the command stream to be after similar
operations without violating draw ordering
-The OpenGLRenderer is in a simple, replayable state (no complex clip,
or filter/shadow etc)
Also adds two system properties to control the deferral/reordering:
"debug.hwui.disable_draw_defer"
"debug.hwui.disable_draw_reorder"
which can be set to "true" to control the display list manipulation
Change-Id: I5e89f3cb0ea2d2afd3e15c64d7f32b8406777a32
diff --git a/libs/hwui/Properties.h b/libs/hwui/Properties.h
index 0c75242..f3957cf 100644
--- a/libs/hwui/Properties.h
+++ b/libs/hwui/Properties.h
@@ -82,6 +82,19 @@
*/
#define PROPERTY_DISABLE_SCISSOR_OPTIMIZATION "ro.hwui.disable_scissor_opt"
+/**
+ * Disables draw operation deferral if set to "true", forcing draw
+ * commands to be issued to OpenGL in order, and processed in sequence
+ * with state-manipulation canvas commands.
+ */
+#define PROPERTY_DISABLE_DRAW_DEFER "debug.hwui.disable_draw_defer"
+
+/**
+ * Used to disable draw operation reordering when deferring draw operations
+ * Has no effect if PROPERTY_DISABLE_DRAW_DEFER is set to "true"
+ */
+#define PROPERTY_DISABLE_DRAW_REORDER "debug.hwui.disable_draw_reorder"
+
// These properties are defined in mega-bytes
#define PROPERTY_TEXTURE_CACHE_SIZE "ro.hwui.texture_cache_size"
#define PROPERTY_LAYER_CACHE_SIZE "ro.hwui.layer_cache_size"