commit c9556ccb5eacf7717e62af89d1a367717e2a62fe
author Kra1o5 <kra1o5x@gmail.com> Wed Jun 24 12:19:09 2015 +0200
committer Kra1o5 <kra1o5x@gmail.com> Mon Jun 29 19:42:40 2015 +0200
tree 503a493eec5584088f63e0df99336e04a2c8679f
parent f2786d37af295e5b11a6aa2df599de44f4ea64ad

Add flag to disable double buffering

Some devices don't support double buffering, so add
the flag TW_DISABLE_DOUBLE_BUFFERING to disable it

Change-Id: Ia9c233fa229ae9c221a6c6f219b216d1753052f4

minuitwrp/Android.mk

diff --git a/minuitwrp/Android.mk b/minuitwrp/Android.mk
index f429744..188de9d 100644
--- a/minuitwrp/Android.mk
+++ b/minuitwrp/Android.mk
@@ -52,6 +52,10 @@
 LOCAL_CFLAGS += -DRECOVERY_GRAPHICS_USE_LINELENGTH
 endif
 
+ifeq ($(TW_DISABLE_DOUBLE_BUFFERING), true)
+LOCAL_CFLAGS += -DTW_DISABLE_DOUBLE_BUFFERING
+endif
+
 #Remove the # from the line below to enable event logging
 #TWRP_EVENT_LOGGING := true
 ifeq ($(TWRP_EVENT_LOGGING), true)

minuitwrp/graphics.c

diff --git a/minuitwrp/graphics.c b/minuitwrp/graphics.c
index 704389f..04c41fb 100644
--- a/minuitwrp/graphics.c
+++ b/minuitwrp/graphics.c
@@ -295,8 +295,12 @@
 
     fb++;
 
+#ifndef TW_DISABLE_DOUBLE_BUFFERING
     /* check if we can use double buffering */
     if (vi.yres * fi.line_length * 2 > fi.smem_len)
+#else
+    printf("TW_DISABLE_DOUBLE_BUFFERING := true\n");
+#endif
         return fd;
 
     double_buffering = 1;