/**************************************************************************
*
* Copyright 2010 LunarG, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include <string.h>
#include "eglsync.h"
#include "eglcurrent.h"
#include "egldriver.h"
#include "egllog.h"
/**
* Parse the list of sync attributes and return the proper error code.
*/
static EGLint
_eglParseSyncAttribList(_EGLSync *sync, const EGLint *attrib_list)
{
EGLint i, err = EGL_SUCCESS;
if (!attrib_list)
return EGL_SUCCESS;
for (i = 0; attrib_list[i] != EGL_NONE; i++) {
EGLint attr = attrib_list[i++];
EGLint val = attrib_list[i];
switch (attr) {
default:
(void) val;
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS) {
_eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
break;
}
}
return err;
}
static EGLint
_eglParseSyncAttribList64(_EGLSync *sync, const EGLAttribKHR *attrib_list)
{
EGLint i, err = EGL_SUCCESS;
if (!attrib_list)
return EGL_SUCCESS;
for (i = 0; attrib_list[i] != EGL_NONE; i++) {
EGLint attr = attrib_list[i++];
EGLint val = attrib_list[i];
switch (attr) {
case EGL_CL_EVENT_HANDLE_KHR:
if (sync->Type == EGL_SYNC_CL_EVENT_KHR) {
sync->CLEvent = val;
break;
}
/* fall through */
default:
(void) val;
err = EGL_BAD_ATTRIBUTE;
break;
}
if (err != EGL_SUCCESS) {
_eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
break;
}
}
return err;
}
EGLBoolean
_eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
const EGLint *attrib_list, const EGLAttribKHR *attrib_list64)
{
EGLint err;
if (!(type == EGL_SYNC_REUSABLE_KHR && dpy->Extensions.KHR_reusable_sync) &&
!(type == EGL_SYNC_FENCE_KHR && dpy->Extensions.KHR_fence_sync) &&
!(type == EGL_SYNC_CL_EVENT_KHR && dpy->Extensions.KHR_cl_event2 &&
attrib_list64))
return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
_eglInitResource(&sync->Resource, sizeof(*sync), dpy);
sync->Type = type;
sync->SyncStatus = EGL_UNSIGNALED_KHR;
switch (type) {
case EGL_SYNC_CL_EVENT_KHR:
sync->SyncCondition = EGL_SYNC_CL_EVENT_COMPLETE_KHR;
break;
default:
sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
}
if (attrib_list64)
err = _eglParseSyncAttribList64(sync, attrib_list64);
else
err = _eglParseSyncAttribList(sync, attrib_list);
if (err != EGL_SUCCESS)
return _eglError(err, "eglCreateSyncKHR");
if (type == EGL_SYNC_CL_EVENT_KHR && !sync->CLEvent)
return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
return EGL_TRUE;
}
EGLBoolean
_eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
EGLint attribute, EGLint *value)
{
if (!value)
return _eglError(EGL_BAD_PARAMETER, "eglGetSyncAttribKHR");
switch (attribute) {
case EGL_SYNC_TYPE_KHR:
*value = sync->Type;
break;
case EGL_SYNC_STATUS_KHR:
/* update the sync status */
if (sync->SyncStatus != EGL_SIGNALED_KHR &&
(sync->Type == EGL_SYNC_FENCE_KHR ||
sync->Type == EGL_SYNC_CL_EVENT_KHR))
drv->API.ClientWaitSyncKHR(drv, dpy, sync, 0, 0);
*value = sync->SyncStatus;
break;
case EGL_SYNC_CONDITION_KHR:
if (sync->Type != EGL_SYNC_FENCE_KHR &&
sync->Type != EGL_SYNC_CL_EVENT_KHR)
return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
*value = sync->SyncCondition;
break;
default:
return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
break;
}
return EGL_TRUE;
}