From 2035930966b05a7c4dd1f6559d66b5a3b41e01a5 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Tapani=20P=C3=A4lli?= <tapani.palli@intel.com>
Date: Wed, 26 Oct 2016 13:54:51 +0300
Subject: [PATCH] egl: set preserved behavior for surface only if config
 supports it
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Otherwise we can end up with mismatching behavior between config and
surface when client queries surface attributes. As example, configs
for DRI3 do not support preserved behavior but here we were setting
preserved behavior for pixmap and pbuffer.

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98326
Cc: "12.0 13.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Tested-by: Mark Janes <mark.a.janes@intel.com>
---
 src/egl/main/eglsurface.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
index eb0bdfe..8e56919 100644
--- a/src/egl/main/eglsurface.c
+++ b/src/egl/main/eglsurface.c
@@ -262,9 +262,13 @@ _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
 {
    const char *func;
    EGLint renderBuffer = EGL_BACK_BUFFER;
-   EGLint swapBehavior = EGL_BUFFER_PRESERVED;
+   EGLint swapBehavior = EGL_BUFFER_DESTROYED;
    EGLint err;
 
+   /* Swap behavior can be preserved only if config supports this. */
+   if (conf->SurfaceType & EGL_SWAP_BEHAVIOR_PRESERVED_BIT)
+      swapBehavior = EGL_BUFFER_PRESERVED;
+
    switch (type) {
    case EGL_WINDOW_BIT:
       func = "eglCreateWindowSurface";
-- 
2.7.4