2011-04-04 Martin Robinson <mrobinson@igalia.com>

2011-04-04  Martin Robinson  <mrobinson@igalia.com>

        Reviewed by Gustavo Noronha Silva.

        [GTK] WebGL support
        https://bugs.webkit.org/show_bug.cgi?id=31517

        * configure.ac: Update configure.ac to ensure that GL/GLX headers exist.
2011-04-04  Martin Robinson  <mrobinson@igalia.com>

        Reviewed by Gustavo Noronha Silva.

        [GTK] WebGL support
        https://bugs.webkit.org/show_bug.cgi?id=31517

        Add WebGL support for the GTK+ bits of WebCore.

        No new tests. This will be covered by the existing WebGL tests once
        the bots are capable of running WebGL tests.

        * GNUmakefile.am: Added new files required for WebGL support.
        * html/HTMLCanvasElement.cpp:
        (WebCore::HTMLCanvasElement::getContext): Extend #ifdef to cover GTK+ as well, which does not
        yet support accelerated compositing.
        * platform/graphics/ANGLEWebKitBridge.h: Update to reflect the fact that ANGLE isn't compiled as
        a framework for GTK+.
        * platform/graphics/GraphicsContext3D.h:
        (WebCore::GraphicsContext3D::platformTexture): Added a declaration of this method for Cairo.
        (WebCore::GraphicsContext3D::paintsIntoCanvasBuffer): Ditto.
        * platform/graphics/cairo/GraphicsContext3DCairo.cpp: Added.
        (WebCore::GraphicsContext3D::getImageData): Added.
        (WebCore::GraphicsContext3D::paintToCanvas): Added.
        * platform/graphics/cairo/OpenGLShims.cpp: Added. This file controls loading of GL extension
        functions dynamically. They have different names across the different vendors' GL implementations.
        (WebCore::lookupOpenGLFunctionAddress): Added
        (WebCore::openGLFunctionTable): Added
        (WebCore::initializeOpenGLShims): Added
        * platform/graphics/cairo/OpenGLShims.h: Added.
        * platform/graphics/gtk/DrawingBufferGtk.cpp: Added.
        (WebCore::DrawingBuffer::DrawingBuffer): Very generic implementation for Cairo.
        (WebCore::DrawingBuffer::~DrawingBuffer): Ditto.
        (WebCore::DrawingBuffer::didReset): Ditto.
        (WebCore::DrawingBuffer::platformColorBuffer): Ditto.
        * platform/graphics/gtk/GraphicsContext3DGtk.cpp: Added.
        (WebCore::GraphicsContext3D::create): Initial implementation.
        (WebCore::GraphicsContext3D::GraphicsContext3D): Ditto.
        (WebCore::GraphicsContext3D::~GraphicsContext3D): Ditto.
        (WebCore::GraphicsContext3D::makeContextCurrent): Ditto.
        (WebCore::GraphicsContext3D::platformGraphicsContext3D): Ditto.
        (WebCore::GraphicsContext3D::isGLES2Compliant): Ditto.
        * platform/graphics/gtk/GraphicsContext3DInternal.cpp: Added.
        (sharedDisplay): Added this shared display which is required by some
        display drivers.
        (WebCore::activeGraphicsContexts): This method keeps track of all active GraphicsContext3D
        contexts, in order to clean them up at exit. This prevents crashes on certain OpenGL drivers.
        (WebCore::GraphicsContext3DInternal::addActiveGraphicsContext): Ditto.
        (WebCore::GraphicsContext3DInternal::removeActiveGraphicsContext): Ditto.
        (WebCore::GraphicsContext3DInternal::cleanupActiveContextsAtExit): Ditto.
        (WebCore::GraphicsContext3DInternal::create): Figure out the best way to create an OpenGL
        context given the current environment.
        (WebCore::GraphicsContext3DInternal::createPbufferContext): Pbuffer context initializer.
        (WebCore::GraphicsContext3DInternal::createPixmapContext): Pixmap context initializer.
        (WebCore::GraphicsContext3DInternal::GraphicsContext3DInternal): Initial implementation.
        (WebCore::GraphicsContext3DInternal::~GraphicsContext3DInternal): Ditto.
        (WebCore::GraphicsContext3DInternal::makeContextCurrent): Ditto.
        * platform/graphics/gtk/GraphicsContext3DInternal.h: Added.
        * platform/graphics/opengl/Extensions3DOpenGL.cpp: Added generic implementation.
        (WebCore::Extensions3DOpenGL::ensureEnabled): Ditto.
        * platform/graphics/opengl/GraphicsContext3DOpenGL.cpp:
        (WebCore::GraphicsContext3D::reshape): Test for the context using the public API rather than
        the private bits that are specific to the Apple port.
2011-04-04  Martin Robinson  <mrobinson@igalia.com>

        Reviewed by Gustavo Noronha Silva.

        [GTK] WebGL support
        https://bugs.webkit.org/show_bug.cgi?id=31517

        Add support for toggling WebGL at runtime when it's enabled.

        * webkit/webkitwebsettings.cpp: Add the enable-webgl property. When ENABLE_WEBGL
        is not enabled, it's a no-op.
        (webkit_web_settings_class_init): Update to support enable-webgl.
        (webkit_web_settings_set_property): Ditto.
        (webkit_web_settings_get_property): Ditto.
        * webkit/webkitwebview.cpp:
        (webkit_web_view_update_settings): Ditto.
2011-04-04  Martin Robinson  <mrobinson@igalia.com>

        Reviewed by Gustavo Noronha Silva.

        [GTK] WebGL support
        https://bugs.webkit.org/show_bug.cgi?id=31517

        Add support to the DRT for turning on WebGL when a layout tests requests it.

        * DumpRenderTree/gtk/LayoutTestControllerGtk.cpp:
        (LayoutTestController::overridePreference): Allow turning on WebGL from tests.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@82878 268f45cc-cd09-0410-ab3c-d52691b4dbfc