1 files changed, 184 insertions, 0 deletions
diff --git a/src/plugins/platforms/wayland/gl_integration/qwaylandglwindowsurface.cpp b/src/plugins/platforms/wayland/gl_integration/qwaylandglwindowsurface.cpp
new file mode 100644
index 0000000000..ebe4c7bf86
--- /dev/null
+++ b/src/plugins/platforms/wayland/gl_integration/qwaylandglwindowsurface.cpp
@@ -0,0 +1,184 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwaylandglwindowsurface.h"
+
+#include "qwaylanddisplay.h"
+#include "qwaylandwindow.h"
+#include "qwaylandscreen.h"
+
+#include <QtOpenGL/QGLFramebufferObject>
+#include <QtOpenGL/QGLContext>
+
+#include <QtOpenGL/private/qglengineshadermanager_p.h>
+
+QT_BEGIN_NAMESPACE
+
+static void drawTexture(const QRectF &rect, GLuint tex_id, const QSize &texSize, const QRectF &br)
+{
+#if !defined(QT_OPENGL_ES_2)
+    QGLContext *ctx = const_cast<QGLContext *>(QGLContext::currentContext());
+#endif
+    const GLenum target = GL_TEXTURE_2D;
+    QRectF src = br.isEmpty()
+        ? QRectF(QPointF(), texSize)
+        : QRectF(QPointF(br.x(), texSize.height() - br.bottom()), br.size());
+
+    if (target == GL_TEXTURE_2D) {
+        qreal width = texSize.width();
+        qreal height = texSize.height();
+
+        src.setLeft(src.left() / width);
+        src.setRight(src.right() / width);
+        src.setTop(src.top() / height);
+        src.setBottom(src.bottom() / height);
+    }
+
+    const GLfloat tx1 = src.left();
+    const GLfloat tx2 = src.right();
+    const GLfloat ty1 = src.top();
+    const GLfloat ty2 = src.bottom();
+
+    GLfloat texCoordArray[4*2] = {
+        tx1, ty2, tx2, ty2, tx2, ty1, tx1, ty1
+    };
+
+    GLfloat vertexArray[4*2];
+    vertexArray[0] = rect.left(); vertexArray[1] = rect.top();
+    vertexArray[2] = rect.right(); vertexArray[3] = rect.top();
+    vertexArray[4] = rect.right(); vertexArray[5] = rect.bottom();
+    vertexArray[6] = rect.left(); vertexArray[7] = rect.bottom();
+
+    glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, vertexArray);
+    glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, texCoordArray);
+
+    glBindTexture(target, tex_id);
+
+    glEnableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    glEnableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    glDisableVertexAttribArray(QT_VERTEX_COORDS_ATTR);
+    glDisableVertexAttribArray(QT_TEXTURE_COORDS_ATTR);
+
+    glBindTexture(target, 0);
+}
+
+static void blitTexture(QGLContext *ctx, GLuint texture, const QSize &viewport, const QSize &texSize, const QRect &targetRect, const QRect &sourceRect)
+{
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_SCISSOR_TEST);
+    glDisable(GL_BLEND);
+    glViewport(0, 0, viewport.width(), viewport.height());
+
+    QGLShaderProgram *blitProgram =
+        QGLEngineSharedShaders::shadersForContext(ctx)->blitProgram();
+    blitProgram->bind();
+    blitProgram->setUniformValue("imageTexture", 0 /*QT_IMAGE_TEXTURE_UNIT*/);
+
+    // The shader manager's blit program does not multiply the
+    // vertices by the pmv matrix, so we need to do the effect
+    // of the orthographic projection here ourselves.
+    QRectF r;
+    qreal w = viewport.width();
+    qreal h = viewport.height();
+    r.setLeft((targetRect.left() / w) * 2.0f - 1.0f);
+    if (targetRect.right() == (viewport.width() - 1))
+        r.setRight(1.0f);
+    else
+        r.setRight((targetRect.right() / w) * 2.0f - 1.0f);
+    r.setBottom((targetRect.top() / h) * 2.0f - 1.0f);
+    if (targetRect.bottom() == (viewport.height() - 1))
+        r.setTop(1.0f);
+    else
+        r.setTop((targetRect.bottom() / w) * 2.0f - 1.0f);
+
+    drawTexture(r, texture, texSize, sourceRect);
+}
+
+QWaylandGLWindowSurface::QWaylandGLWindowSurface(QWidget *window)
+    : QWindowSurface(window)
+    , mDisplay(QWaylandScreen::waylandScreenFromWidget(window)->display())
+    , mPaintDevice(0)
+{
+
+}
+
+QWaylandGLWindowSurface::~QWaylandGLWindowSurface()
+{
+    delete mPaintDevice;
+}
+
+QPaintDevice *QWaylandGLWindowSurface::paintDevice()
+{
+    return mPaintDevice;
+}
+
+void QWaylandGLWindowSurface::beginPaint(const QRegion &)
+{
+    window()->platformWindow()->glContext()->makeCurrent();
+    glClearColor(0,0,0,0xff);
+    glClear(GL_COLOR_BUFFER_BIT);
+}
+
+void QWaylandGLWindowSurface::flush(QWidget *widget, const QRegion &region, const QPoint &offset)
+{
+    Q_UNUSED(offset);
+    Q_UNUSED(region);
+    QWaylandWindow *ww = (QWaylandWindow *) widget->platformWindow();
+
+    if (mPaintDevice->isBound())
+        mPaintDevice->release();
+
+    QRect rect(0,0,size().width(),size().height());
+    QGLContext *ctx = QGLContext::fromPlatformGLContext(ww->glContext());
+    blitTexture(ctx,mPaintDevice->texture(),size(),mPaintDevice->size(),rect,rect);
+    ww->glContext()->swapBuffers();
+}
+
+void QWaylandGLWindowSurface::resize(const QSize &size)
+{
+    QWindowSurface::resize(size);
+    window()->platformWindow()->glContext()->makeCurrent();
+    delete mPaintDevice;
+    mPaintDevice = new QGLFramebufferObject(size);
+}
+
+QT_END_NAMESPACE