Mesa (master): egl: Add support for EGL_KHR_fence_sync.

[Chia-I Wu]

Module: Mesa
Branch: master
Commit: 2b2c5c4f5cb4620044eeaa7cc308e696209c7046
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2b2c5c4f5cb4620044eeaa7cc308e696209c7046

Author: Chia-I Wu <olv at lunarg.com>
Date:   Sun Aug 15 17:09:48 2010 +0800

egl: Add support for EGL_KHR_fence_sync.

Individual drivers still need to support and enable the extension.

---

 src/egl/main/egldisplay.h |    1 +
 src/egl/main/eglmisc.c    |    1 +
 src/egl/main/eglsync.c    |    9 ++++++++-
 src/egl/main/eglsync.h    |    1 +
 4 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index a5c1453..97c9d19 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -64,6 +64,7 @@ struct _egl_extensions
    EGLBoolean KHR_gl_renderbuffer_image;
 
    EGLBoolean KHR_reusable_sync;
+   EGLBoolean KHR_fence_sync;
 
    EGLBoolean KHR_surfaceless_gles1;
    EGLBoolean KHR_surfaceless_gles2;
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index 2ef6ba5..b10783b 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -98,6 +98,7 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
    _EGL_CHECK_EXTENSION(KHR_gl_renderbuffer_image);
 
    _EGL_CHECK_EXTENSION(KHR_reusable_sync);
+   _EGL_CHECK_EXTENSION(KHR_fence_sync);
 
    _EGL_CHECK_EXTENSION(KHR_surfaceless_gles1);
    _EGL_CHECK_EXTENSION(KHR_surfaceless_gles2);
diff --git a/src/egl/main/eglsync.c b/src/egl/main/eglsync.c
index 3f51e89..b6c62d0 100644
--- a/src/egl/main/eglsync.c
+++ b/src/egl/main/eglsync.c
@@ -46,7 +46,8 @@ _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
 {
    EGLint err;
 
-   if (!(type == EGL_SYNC_REUSABLE_KHR && dpy->Extensions.KHR_reusable_sync))
+   if (!(type == EGL_SYNC_REUSABLE_KHR && dpy->Extensions.KHR_reusable_sync) &&
+       !(type == EGL_SYNC_FENCE_KHR && dpy->Extensions.KHR_fence_sync))
       return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
 
    memset(sync, 0, sizeof(*sync));
@@ -55,6 +56,7 @@ _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
 
    sync->Type = type;
    sync->SyncStatus = EGL_UNSIGNALED_KHR;
+   sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
 
    err = _eglParseSyncAttribList(sync, attrib_list);
    if (err != EGL_SUCCESS)
@@ -109,6 +111,11 @@ _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
    case EGL_SYNC_STATUS_KHR:
       *value = sync->SyncStatus;
       break;
+   case EGL_SYNC_CONDITION_KHR:
+      if (sync->Type != EGL_SYNC_FENCE_KHR)
+         return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
+      *value = sync->SyncCondition;
+      break;
    default:
       return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
       break;
diff --git a/src/egl/main/eglsync.h b/src/egl/main/eglsync.h
index a013478..25c4671 100644
--- a/src/egl/main/eglsync.h
+++ b/src/egl/main/eglsync.h
@@ -19,6 +19,7 @@ struct _egl_sync
 
    EGLenum Type;
    EGLenum SyncStatus;
+   EGLenum SyncCondition;
 };