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/*
* Copyright (C) 2014 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WaylandDisplay.h"
#if PLATFORM(WAYLAND)
#include "GLContextEGL.h"
#include "WaylandSurface.h"
#include <cstring>
#include <glib.h>
namespace WebCore {
const struct wl_registry_listener WaylandDisplay::m_registryListener = {
WaylandDisplay::globalCallback,
WaylandDisplay::globalRemoveCallback
};
void WaylandDisplay::globalCallback(void* data, struct wl_registry* registry, uint32_t name, const char* interface, uint32_t)
{
auto display = static_cast<WaylandDisplay*>(data);
if (!std::strcmp(interface, "wl_compositor"))
display->m_compositor = static_cast<struct wl_compositor*>(wl_registry_bind(registry, name, &wl_compositor_interface, 1));
else if (!std::strcmp(interface, "wl_webkitgtk"))
display->m_webkitgtk = static_cast<struct wl_webkitgtk*>(wl_registry_bind(registry, name, &wl_webkitgtk_interface, 1));
}
void WaylandDisplay::globalRemoveCallback(void*, struct wl_registry*, uint32_t)
{
// FIXME: if this can happen without the UI Process getting shut down
// we should probably destroy our cached display instance.
}
WaylandDisplay* WaylandDisplay::instance()
{
static WaylandDisplay* display = nullptr;
static bool initialized = false;
if (initialized)
return display;
initialized = true;
struct wl_display* wlDisplay = wl_display_connect("webkitgtk-wayland-compositor-socket");
if (!wlDisplay)
return nullptr;
display = new WaylandDisplay(wlDisplay);
if (!display->isInitialized()) {
delete display;
return nullptr;
}
return display;
}
WaylandDisplay::WaylandDisplay(struct wl_display* wlDisplay)
: m_display(wlDisplay)
, m_registry(wl_display_get_registry(m_display))
, m_eglConfigChosen(false)
{
wl_registry_add_listener(m_registry, &m_registryListener, this);
wl_display_roundtrip(m_display);
static const EGLint configAttributes[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 1,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE
};
m_eglDisplay = eglGetDisplay(m_display);
if (m_eglDisplay == EGL_NO_DISPLAY) {
g_warning("WaylandDisplay initialization: failed to acquire EGL display.");
return;
}
if (eglInitialize(m_eglDisplay, 0, 0) == EGL_FALSE) {
g_warning("WaylandDisplay initialization: failed to initialize the EGL display.");
return;
}
if (eglBindAPI(EGL_OPENGL_ES_API) == EGL_FALSE) {
g_warning("WaylandDisplay initialization: failed to set EGL_OPENGL_ES_API as the rendering API.");
return;
}
EGLint numberOfConfigs;
if (!eglChooseConfig(m_eglDisplay, configAttributes, &m_eglConfig, 1, &numberOfConfigs) || numberOfConfigs != 1) {
g_warning("WaylandDisplay initialization: failed to find the desired EGL configuration.");
return;
}
m_eglConfigChosen = true;
}
std::unique_ptr<WaylandSurface> WaylandDisplay::createSurface(const IntSize& size, int widgetId)
{
struct wl_surface* wlSurface = wl_compositor_create_surface(m_compositor);
// We keep the minimum size at 1x1px since Mesa returns null values in wl_egl_window_create() for zero width or height.
EGLNativeWindowType nativeWindow = wl_egl_window_create(wlSurface, std::max(1, size.width()), std::max(1, size.height()));
wl_webkitgtk_set_surface_for_widget(m_webkitgtk, wlSurface, widgetId);
wl_display_roundtrip(m_display);
return std::make_unique<WaylandSurface>(wlSurface, nativeWindow);
}
PassOwnPtr<GLContextEGL> WaylandDisplay::createSharingGLContext()
{
struct wl_surface* wlSurface = wl_compositor_create_surface(m_compositor);
EGLNativeWindowType nativeWindow = wl_egl_window_create(wlSurface, 1, 1);
return GLContextEGL::createWindowContext(nativeWindow, nullptr);
}
} // namespace WebCore
#endif // PLATFORM(WAYLAND)
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