From a5ab46909e9475da0eb8c814efb8e1859a6e6ed3 Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olv@lunarg.com>
Date: Thu, 28 Jul 2011 13:33:55 +0900
Subject: [PATCH] egl: make pixmaps and pbuffers EGL_BUFFER_PRESERVED

eglSwapBuffers is no-op to these surface types anyway.
---
 src/egl/main/eglsurface.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
index c9cfb01388e..3564ecd01b0 100644
--- a/src/egl/main/eglsurface.c
+++ b/src/egl/main/eglsurface.c
@@ -269,11 +269,13 @@ _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
 {
    const char *func;
    EGLint renderBuffer = EGL_BACK_BUFFER;
+   EGLint swapBehavior = EGL_BUFFER_PRESERVED;
    EGLint err;
 
    switch (type) {
    case EGL_WINDOW_BIT:
       func = "eglCreateWindowSurface";
+      swapBehavior = EGL_BUFFER_DESTROYED;
       break;
    case EGL_PIXMAP_BIT:
       func = "eglCreatePixmapSurface";
@@ -315,7 +317,7 @@ _eglInitSurface(_EGLSurface *surf, _EGLDisplay *dpy, EGLint type,
 
    surf->MipmapLevel = 0;
    surf->MultisampleResolve = EGL_MULTISAMPLE_RESOLVE_DEFAULT;
-   surf->SwapBehavior = EGL_BUFFER_DESTROYED;
+   surf->SwapBehavior = swapBehavior;
 
    surf->HorizontalResolution = EGL_UNKNOWN;
    surf->VerticalResolution = EGL_UNKNOWN;
-- 
2.30.2