diff options
Diffstat (limited to 'yocto-poky/meta/recipes-graphics/mesa/mesa-demos/0010-sharedtex_mt-fix-rendering-thread-hang.patch')
-rw-r--r-- | yocto-poky/meta/recipes-graphics/mesa/mesa-demos/0010-sharedtex_mt-fix-rendering-thread-hang.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/yocto-poky/meta/recipes-graphics/mesa/mesa-demos/0010-sharedtex_mt-fix-rendering-thread-hang.patch b/yocto-poky/meta/recipes-graphics/mesa/mesa-demos/0010-sharedtex_mt-fix-rendering-thread-hang.patch new file mode 100644 index 000000000..04e1b446f --- /dev/null +++ b/yocto-poky/meta/recipes-graphics/mesa/mesa-demos/0010-sharedtex_mt-fix-rendering-thread-hang.patch @@ -0,0 +1,43 @@ +From 525fa9ded72d22b53c5eb366f61e2ac1d407a2db Mon Sep 17 00:00:00 2001 +From: Awais Belal <awais_belal@mentor.com> +Date: Thu, 8 Oct 2015 13:49:31 +0500 +Subject: [PATCH] sharedtex_mt: fix rendering thread hang + +XNextEvent is a blocking call which locks up the display mutex +this causes the rendering threads to hang when they try call +glXSwapBuffers() as that tries to take the same mutex in +underlying calls through XCopyArea(). +So we only go to XNextEvent when it has at least one event +and we wouldn't lock indefinitely. + +Signed-off-by: Awais Belal <awais_belal@mentor.com> +Upstream-Status: Backport (2b304e765695d385fd3bf414e6e444020bedb0a8) + +--- + src/xdemos/sharedtex_mt.c | 9 +++++++-- + 1 file changed, 7 insertions(+), 2 deletions(-) + +diff --git a/src/xdemos/sharedtex_mt.c b/src/xdemos/sharedtex_mt.c +index a90903a..1d503c4 100644 +--- a/src/xdemos/sharedtex_mt.c ++++ b/src/xdemos/sharedtex_mt.c +@@ -420,9 +420,14 @@ Resize(struct window *h, unsigned int width, unsigned int height) + static void + EventLoop(void) + { ++ int i; ++ XEvent event; + while (1) { +- int i; +- XEvent event; ++ /* Do we have an event? */ ++ if (XPending(gDpy) == 0) { ++ usleep(10000); ++ continue; ++ } + XNextEvent(gDpy, &event); + for (i = 0; i < NumWindows; i++) { + struct window *h = &Windows[i]; +-- +1.9.1 + |