From acac588d58cdc7e3ad78c76a1fddffe12ed0b869 Mon Sep 17 00:00:00 2001
From: Carsten Haitzler <raster@rasterman.com>
Date: Sat, 28 Aug 2010 13:15:38 +0000
Subject: [PATCH] re-enaqble async rendering. seems ok on 2 cores. might be a
 quad-core issue and arm issue. need to check again monday.

SVN revision: 51696
---
 legacy/evas/README.in    |  2 +-
 legacy/evas/configure.ac | 64 +++++++++++++++++++---------------------
 2 files changed, 31 insertions(+), 35 deletions(-)

diff --git a/legacy/evas/README.in b/legacy/evas/README.in
index 3248371889..95f3a13e74 100644
--- a/legacy/evas/README.in
+++ b/legacy/evas/README.in
@@ -560,7 +560,7 @@ if you ask it to, and provide events when done. this goes hand-in-hand
 with --enable-pthreads and --enable-async-events. you really want all
 of these available.
 
---enable-async-render **DISABLED DUE TO BUGS**
+--enable-async-render **CAUTION - MAY NOT WORK RIGHT**
 
 this enables a software multi-frame threaded renderer. this will
 allocate (for example) 2 frames to 2 cores, with one core of the cpu
diff --git a/legacy/evas/configure.ac b/legacy/evas/configure.ac
index 24d48b0895..9160f60827 100644
--- a/legacy/evas/configure.ac
+++ b/legacy/evas/configure.ac
@@ -842,39 +842,35 @@ dnl fi
 #######################################
 ## Async Renderer
 build_async_render="no"
-dnl
-dnl ... DISABLED! some testing has shown that this seems to have some
-dnl nasty bugs on both x86 and arm (tegra2 dual core tested), so just
-dnl disabling this for now until it can be fixed
-dnl 
-dnl AC_MSG_CHECKING(whether to build Asynchronously Threaded Pipe Rendering support)
-dnl AC_ARG_ENABLE(async-render,
-dnl  AC_HELP_STRING([--enable-async-render], [enable asynchronously threaded pipe rendering support]),
-dnl  [ build_async_render=$enableval ]
-dnl )
-dnl AC_MSG_RESULT($build_async_render)
-dnl 
-dnl AC_MSG_CHECKING(whether we can build Asynchronously Threaded Pipe Rendering support)
-dnl if test \( "x$build_async_render" = "xyes" \); then
-dnl   AC_MSG_RESULT(yes)
-dnl   AC_DEFINE(EVAS_FRAME_QUEUING, 1, [Build async render support])
-dnl   build_async_render="yes"
-dnl   AC_DEFINE(BUILD_PIPE_RENDER, 1, [Build pipe render support])
-dnl   build_pipe_render="yes"
-dnl   need_pthreads="yes"
-dnl 
-dnl   PKG_CHECK_MODULES([XEXT],
-dnl      [xext < 1.1.1],
-dnl      [ build_avoid_libXext_bug=yes ],
-dnl      [ build_avoid_libXext_bug=no ]
-dnl   )
-dnl   if test \( "x$build_avoid_libXext_bug" = "xyes" \); then
-dnl     AC_DEFINE(LIBXEXT_VERSION_LOW, 1, [To avoid bug on old libXext version])
-dnl   fi
-dnl else
-dnl   AC_MSG_RESULT(no)
-dnl   build_async_render="no"
-dnl fi
+
+AC_MSG_CHECKING(whether to build Asynchronously Threaded Pipe Rendering support)
+AC_ARG_ENABLE(async-render,
+ AC_HELP_STRING([--enable-async-render], [enable asynchronously threaded pipe rendering support]),
+ [ build_async_render=$enableval ]
+)
+AC_MSG_RESULT($build_async_render)
+
+AC_MSG_CHECKING(whether we can build Asynchronously Threaded Pipe Rendering support)
+if test \( "x$build_async_render" = "xyes" \); then
+  AC_MSG_RESULT(yes)
+  AC_DEFINE(EVAS_FRAME_QUEUING, 1, [Build async render support])
+  build_async_render="yes"
+  AC_DEFINE(BUILD_PIPE_RENDER, 1, [Build pipe render support])
+  build_pipe_render="yes"
+  need_pthreads="yes"
+
+  PKG_CHECK_MODULES([XEXT],
+     [xext < 1.1.1],
+     [ build_avoid_libXext_bug=yes ],
+     [ build_avoid_libXext_bug=no ]
+  )
+  if test \( "x$build_avoid_libXext_bug" = "xyes" \); then
+    AC_DEFINE(LIBXEXT_VERSION_LOW, 1, [To avoid bug on old libXext version])
+  fi
+else
+  AC_MSG_RESULT(no)
+  build_async_render="no"
+fi
 
 #######################################
 ## Async events
@@ -1636,7 +1632,7 @@ dnl nasty bugs on both x86 and arm (tegra2 dual core tested), so just
 dnl disabling this for now until it can be fixed
 dnl 
 dnl echo "  Threaded Pipe Rendering.: $build_pipe_render"
-dnl echo "  Async Pipe Rendering....: $build_async_render"
+echo "  Async Pipe Rendering....: $build_async_render"
 echo "  Async Events............: $build_async_events"
 echo "  Async Image Preload.....: $build_async_preload"
 echo