1 files changed, 87 insertions, 0 deletions
diff --git a/Source/WebKit2/UIProcess/gtk/HardwareAccelerationManager.cpp b/Source/WebKit2/UIProcess/gtk/HardwareAccelerationManager.cpp
new file mode 100644
index 000000000..e06e629a4
--- /dev/null
+++ b/Source/WebKit2/UIProcess/gtk/HardwareAccelerationManager.cpp
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2017 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 "HardwareAccelerationManager.h"
+
+#include "WaylandCompositor.h"
+#include <WebCore/NotImplemented.h>
+#include <WebCore/PlatformDisplay.h>
+
+#if USE(REDIRECTED_XCOMPOSITE_WINDOW)
+#include <WebCore/PlatformDisplayX11.h>
+#endif
+
+using namespace WebCore;
+
+namespace WebKit {
+
+HardwareAccelerationManager& HardwareAccelerationManager::singleton()
+{
+    static NeverDestroyed<HardwareAccelerationManager> manager;
+    return manager;
+}
+
+HardwareAccelerationManager::HardwareAccelerationManager()
+    : m_canUseHardwareAcceleration(true)
+    , m_forceHardwareAcceleration(false)
+{
+#if !ENABLE(OPENGL)
+    m_canUseHardwareAcceleration = false;
+    return;
+#endif
+
+    const char* disableCompositing = getenv("WEBKIT_DISABLE_COMPOSITING_MODE");
+    if (disableCompositing && strcmp(disableCompositing, "0")) {
+        m_canUseHardwareAcceleration = false;
+        return;
+    }
+
+#if USE(REDIRECTED_XCOMPOSITE_WINDOW)
+    if (PlatformDisplay::sharedDisplay().type() == PlatformDisplay::Type::X11) {
+        auto& display = downcast<PlatformDisplayX11>(PlatformDisplay::sharedDisplay());
+        std::optional<int> damageBase, errorBase;
+        if (!display.supportsXComposite() || !display.supportsXDamage(damageBase, errorBase)) {
+            m_canUseHardwareAcceleration = false;
+            return;
+        }
+    }
+#endif
+
+#if PLATFORM(WAYLAND) && USE(EGL)
+    if (PlatformDisplay::sharedDisplay().type() == PlatformDisplay::Type::Wayland) {
+        if (!WaylandCompositor::singleton().isRunning()) {
+            m_canUseHardwareAcceleration = false;
+            return;
+        }
+    }
+#endif
+
+    const char* forceCompositing = getenv("WEBKIT_FORCE_COMPOSITING_MODE");
+    if (forceCompositing && strcmp(forceCompositing, "0"))
+        m_forceHardwareAcceleration = true;
+}
+
+} // namespace WebKit