Remove DRI2/OpenGL code paths from xcb plugin.

These were used to test QtWayland, but there are other options available
for that now. The DRI2 code hasn't been maintained and doesn't even
compile at the moment, so let's just remove it to de-clutter the source.

Change-Id: I7db0f4db82348497b9f4d6c2dcf2e13f3ab14a76
Reviewed-by: Uli Schlachter <psychon@znc.in>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 0 insertions, 273 deletions

diff --git a/src/plugins/platforms/xcb/qdri2context.cpp b/src/plugins/platforms/xcb/qdri2context.cpp
deleted file mode 100644
index 5f116fe0f6..0000000000
--- a/src/plugins/platforms/xcb/qdri2context.cpp
+++ /dev/null
@@ -1,273 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/legal
-**
-** This file is part of the plugins of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Digia.  For licensing terms and
-** conditions see http://qt.digia.com/licensing.  For further information
-** use the contact form at http://qt.digia.com/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Digia gives you certain additional
-** rights.  These rights are described in the Digia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 3.0 as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU General Public License version 3.0 requirements will be
-** met: http://www.gnu.org/copyleft/gpl.html.
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qdri2context.h"
-
-#include "qxcbwindow.h"
-#include "qxcbconnection.h"
-
-#include <QtCore/QDebug>
-#include <QtWidgets/QWidget>
-
-#include <xcb/dri2.h>
-#include <xcb/xfixes.h>
-
-#define MESA_EGL_NO_X11_HEADERS
-#define EGL_EGLEXT_PROTOTYPES
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#define GL_GLEXT_PROTOTYPES
-#include <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-
-QT_BEGIN_NAMESPACE
-
-class QDri2ContextPrivate
-{
-public:
-    QDri2ContextPrivate(QXcbWindow *window)
-        : qXcbWindow(window)
-        , windowFormat(window->widget()->platformWindowFormat())
-        , image(0)
-    {
-    }
-
-    xcb_window_t xcbWindow() { return qXcbWindow->window(); }
-    xcb_connection_t *xcbConnection() { return qXcbWindow->xcb_connection(); }
-
-    QXcbWindow *qXcbWindow;
-    QPlatformWindowFormat windowFormat;
-
-    EGLContext eglContext;
-
-    EGLImageKHR image;
-
-    GLuint fbo;
-    GLuint rbo;
-    GLuint depth;
-
-    QSize size;
-};
-
-QDri2Context::QDri2Context(QXcbWindow *window)
-    : d_ptr(new QDri2ContextPrivate(window))
-{
-    Q_D(QDri2Context);
-
-    static const EGLint contextAttribs[] = {
-            EGL_CONTEXT_CLIENT_VERSION, 2,
-            EGL_NONE
-    };
-
-    eglBindAPI(EGL_OPENGL_ES_API);
-
-    EGLContext shareContext = EGL_NO_CONTEXT;
-    if (window->widget()->platformWindowFormat().sharedGLContext()) {
-        QDri2Context *context = static_cast<QDri2Context *>(window->widget()->platformWindowFormat().sharedGLContext());
-        shareContext = context->d_func()->eglContext;
-    }
-    d->eglContext = eglCreateContext(EGL_DISPLAY_FROM_XCB(d->qXcbWindow), NULL,
-                                               shareContext, contextAttribs);
-
-    if (d->eglContext == EGL_NO_CONTEXT) {
-        qDebug() << "No eglContext!" << eglGetError();
-    }
-
-    EGLBoolean makeCurrentSuccess = eglMakeCurrent(EGL_DISPLAY_FROM_XCB(d->qXcbWindow),EGL_NO_SURFACE,EGL_NO_SURFACE,d->eglContext);
-    if (!makeCurrentSuccess) {
-        qDebug() << "eglMakeCurrent failed!" << eglGetError();
-    }
-
-    xcb_dri2_create_drawable (d->xcbConnection(), d->xcbWindow());
-
-    glGenFramebuffers(1,&d->fbo);
-    glBindFramebuffer(GL_FRAMEBUFFER,d->fbo);
-    glActiveTexture(GL_TEXTURE0);
-
-    glGenRenderbuffers(1, &d->rbo);
-    glBindRenderbuffer(GL_RENDERBUFFER, d->rbo);
-
-    glGenRenderbuffers(1,&d->depth);
-    glBindRenderbuffer(GL_RENDERBUFFER, d->depth);
-
-    resize(d->qXcbWindow->widget()->geometry().size());
-
-    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, d->rbo);
-    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERER,d->depth);
-    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERER,d->depth);
-
-    //restore the old current context
-    const QPlatformOpenGLContext *currentContext = QPlatformOpenGLContext::currentContext();
-    if (currentContext)
-        const_cast<QPlatformOpenGLContext*>(currentContext)->makeCurrent();
-}
-
-QDri2Context::~QDri2Context()
-{
-    //cleanup
-}
-
-void QDri2Context::makeCurrent()
-{
-    Q_D(QDri2Context);
-
-    eglMakeCurrent(EGL_DISPLAY_FROM_XCB(d->qXcbWindow),EGL_NO_SURFACE,EGL_NO_SURFACE,d->eglContext);
-    glBindFramebuffer(GL_FRAMEBUFFER,d->fbo);
-
-}
-
-void QDri2Context::doneCurrent()
-{
-    Q_D(QDri2Context);
-    eglMakeCurrent(EGL_DISPLAY_FROM_XCB(d->qXcbWindow),EGL_NO_SURFACE,EGL_NO_SURFACE,EGL_NO_CONTEXT);
-}
-
-void QDri2Context::swapBuffers()
-{
-    Q_D(QDri2Context);
-    xcb_rectangle_t rectangle;
-    rectangle.x = 0;
-    rectangle.y = 0;
-    rectangle.width = d->qXcbWindow->widget()->geometry().width();
-    rectangle.height = d->qXcbWindow->widget()->geometry().height();
-
-    xcb_xfixes_region_t xfixesRegion = xcb_generate_id(d->xcbConnection());
-    xcb_xfixes_create_region(d->xcbConnection(), xfixesRegion,
-                             1, &rectangle);
-
-    xcb_dri2_copy_region_cookie_t cookie = xcb_dri2_copy_region_unchecked(d->xcbConnection(),
-                                                                          d->qXcbWindow->window(),
-                                                                          xfixesRegion,
-                                                                          XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
-                                                                          XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT);
-
-    xcb_dri2_copy_region_reply_t *reply = xcb_dri2_copy_region_reply(d->xcbConnection(),cookie,NULL);
-
-    //cleanup
-    delete reply;
-    xcb_xfixes_destroy_region(d->xcbConnection(), xfixesRegion);
-
-}
-
-void * QDri2Context::getProcAddress(const QString &procName)
-{
-    return (void *)eglGetProcAddress(qPrintable(procName));
-}
-
-void QDri2Context::resize(const QSize &size)
-{
-    Q_D(QDri2Context);
-    d->size= size;
-
-    glBindFramebuffer(GL_FRAMEBUFFER,d->fbo);
-
-    xcb_dri2_dri2_buffer_t *backBfr = backBuffer();
-
-    if (d->image) {
-        qDebug() << "destroing image";
-        eglDestroyImageKHR(EGL_DISPLAY_FROM_XCB(d->qXcbWindow),d->image);
-    }
-
-    EGLint imgAttribs[] = {
-        EGL_WIDTH,                      d->size.width(),
-        EGL_HEIGHT,                     d->size.height(),
-        EGL_DRM_BUFFER_STRIDE_MESA,     backBfr->pitch /4,
-        EGL_DRM_BUFFER_FORMAT_MESA,     EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
-        EGL_NONE
-    };
-
-    d->image = eglCreateImageKHR(EGL_DISPLAY_FROM_XCB(d->qXcbWindow),
-                                EGL_NO_CONTEXT,
-                                EGL_DRM_BUFFER_MESA,
-                                (EGLClientBuffer) backBfr->name,
-                                imgAttribs);
-
-    glBindRenderbuffer(GL_RENDERBUFFER, d->rbo);
-    glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
-                                           d->image);
-
-    glBindRenderbuffer(GL_RENDERBUFFER, d->depth);
-    glRenderbufferStorage(GL_RENDERBUFFER,GL_DEPTH24_STENCIL8_OES,d->size.width(), d->size.height());
-
-}
-
-QPlatformWindowFormat QDri2Context::platformWindowFormat() const
-{
-    Q_D(const QDri2Context);
-    return d->windowFormat;
-}
-
-xcb_dri2_dri2_buffer_t * QDri2Context::backBuffer()
-{
-    Q_D(QDri2Context);
-
-    unsigned int backBufferAttachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
-    xcb_dri2_get_buffers_cookie_t cookie = xcb_dri2_get_buffers_unchecked (d->xcbConnection(),
-                                                                           d->xcbWindow(),
-                                                                           1, 1, &backBufferAttachment);
-
-    xcb_dri2_get_buffers_reply_t *reply = xcb_dri2_get_buffers_reply (d->xcbConnection(), cookie, NULL);
-    if (!reply) {
-        qDebug() << "failed to get buffers reply";
-        return 0;
-    }
-
-    xcb_dri2_dri2_buffer_t *buffers = xcb_dri2_get_buffers_buffers (reply);
-    if (!buffers) {
-        qDebug() << "failed to get buffers";
-        return 0;
-    }
-
-    Q_ASSERT(reply->count == 1);
-
-    delete reply;
-
-    return buffers;
-}
-
-void * QDri2Context::eglContext() const
-{
-    Q_D(const QDri2Context);
-    return d->eglContext;
-}
-
-QT_END_NAMESPACE