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/*
* Copyright (C) 2024 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "GLFence.h"
#include "GLContext.h"
#include "GLDisplay.h"
#include "GLFenceEGL.h"
#include "GLFenceGL.h"
#include "PlatformDisplay.h"
#include <wtf/TZoneMallocInlines.h>
#if USE(LIBEPOXY)
#include <epoxy/gl.h>
#else
#include <GLES2/gl2.h>
#endif
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(GLFence);
static inline bool eglVersionSupportsFences(const GLDisplay& display)
{
return display.checkVersion(1, 5);
}
static inline bool eglExtensionsSupportFences(const GLDisplay& display)
{
return display.extensions().KHR_fence_sync;
}
static inline bool glContextSupportsFences(GLContextWrapper* context)
{
return context->glVersion() >= 300;
}
bool GLFence::isSupported(const GLDisplay& display)
{
auto* context = GLContextWrapper::currentContext();
if (!context)
return false;
if (eglVersionSupportsFences(display) || eglExtensionsSupportFences(display))
return true;
return glContextSupportsFences(context);
}
std::unique_ptr<GLFence> GLFence::create(const GLDisplay& display)
{
#if HAVE(GL_FENCE)
auto* context = GLContextWrapper::currentContext();
if (!context)
return nullptr;
if (eglVersionSupportsFences(display))
return GLFenceEGL::create(display);
// Prefer EGL if server wait is supported,
if (eglExtensionsSupportFences(display) && display.extensions().KHR_wait_sync)
return GLFenceEGL::create(display);
if (glContextSupportsFences(context))
return GLFenceGL::create();
if (eglExtensionsSupportFences(display))
return GLFenceEGL::create(display);
#endif
return nullptr;
}
#if OS(UNIX)
std::unique_ptr<GLFence> GLFence::createExportable(const GLDisplay& display)
{
#if HAVE(GL_FENCE)
if (!GLContextWrapper::currentContext())
return nullptr;
if (display.extensions().ANDROID_native_fence_sync)
return GLFenceEGL::createExportable(display);
#endif
return nullptr;
}
std::unique_ptr<GLFence> GLFence::importFD(const GLDisplay& display, UnixFileDescriptor&& fd)
{
#if HAVE(GL_FENCE)
if (!GLContextWrapper::currentContext())
return nullptr;
if (display.extensions().ANDROID_native_fence_sync)
return GLFenceEGL::importFD(display, WTFMove(fd));
#else
UNUSED_PARAM(fd);
#endif
return nullptr;
}
#endif
} // namespace WebCore
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