Lighthouse: Added QDirectFbGlContext

This is untested since I have no HW to test on, but its in the public
api, so that we have something to build on.

5 files changed, 115 insertions, 3 deletions

diff --git a/src/plugins/platforms/directfb/directfb.pro b/src/plugins/platforms/directfb/directfb.pro
index 48128fb..65c49e3 100644
--- a/src/plugins/platforms/directfb/directfb.pro
+++ b/src/plugins/platforms/directfb/directfb.pro
@@ -19,14 +19,16 @@ SOURCES = main.cpp \
     qdirectfbconvenience.cpp \
     qdirectfbinput.cpp \
     qdirectfbcursor.cpp \
-    qdirectfbwindow.cpp
+    qdirectfbwindow.cpp \
+    qdirectfbglcontext.cpp
 HEADERS = qdirectfbintegration.h \
     qdirectfbwindowsurface.h \
     qdirectfbblitter.h \
     qdirectfbconvenience.h \
     qdirectfbinput.h \
     qdirectfbcursor.h \
-    qdirectfbwindow.h
+    qdirectfbwindow.h \
+    qdirectfbglcontext.h
 
 include(../fontdatabases/genericunix/genericunix.pri)
 target.path += $$[QT_INSTALL_PLUGINS]/platforms
diff --git a/src/plugins/platforms/directfb/qdirectfbglcontext.cpp b/src/plugins/platforms/directfb/qdirectfbglcontext.cpp
new file mode 100644
index 0000000..fe96efe
--- /dev/null
+++ b/src/plugins/platforms/directfb/qdirectfbglcontext.cpp
@@ -0,0 +1,58 @@
+#include "qdirectfbglcontext.h"
+
+#include <directfb/directfbgl.h>
+
+#include <QDebug>
+
+QDirectFbGLContext::QDirectFbGLContext(IDirectFBGL *glContext)
+    : m_dfbGlContext(glContext)
+{
+    DFBResult result;
+    DFBGLAttributes glAttribs;
+    result = m_dfbGlContext->GetAttributes(glContext, &glAttribs);
+    if (result == DFB_OK) {
+        m_windowFormat.setDepthBufferSize(glAttribs.depth_size);
+        m_windowFormat.setStencilBufferSize(glAttribs.stencil_size);
+
+        m_windowFormat.setRedBufferSize(glAttribs.red_size);
+        m_windowFormat.setGreenBufferSize(glAttribs.green_size);
+        m_windowFormat.setBlueBufferSize(glAttribs.blue_size);
+        m_windowFormat.setAlphaBufferSize(glAttribs.alpha_size);
+
+        m_windowFormat.setAccumBufferSize(glAttribs.accum_red_size);
+        m_windowFormat.setAlpha(glAttribs.accum_alpha_size);
+
+        m_windowFormat.setDoubleBuffer(glAttribs.double_buffer);
+        m_windowFormat.setStereo(glAttribs.stereo);
+    }
+}
+
+void QDirectFbGLContext::makeCurrent()
+{
+    m_dfbGlContext->Lock(m_dfbGlContext);
+}
+
+void QDirectFbGLContext::doneCurrent()
+{
+    m_dfbGlContext->Unlock(m_dfbGlContext);
+}
+
+void *QDirectFbGLContext::getProcAddress(const QString &procName)
+{
+    void *proc;
+    DFBResult result = m_dfbGlContext->GetProcAddress(m_dfbGlContext,qPrintable(procName),&proc);
+    if (result == DFB_OK)
+        return proc;
+    return 0;
+}
+
+void QDirectFbGLContext::swapBuffers()
+{
+//    m_dfbGlContext->Unlock(m_dfbGlContext); //maybe not in doneCurrent()
+    qDebug() << "Swap buffers";
+}
+
+QPlatformWindowFormat QDirectFbGLContext::platformWindowFormat() const
+{
+    return m_windowFormat;
+}
diff --git a/src/plugins/platforms/directfb/qdirectfbglcontext.h b/src/plugins/platforms/directfb/qdirectfbglcontext.h
new file mode 100644
index 0000000..037587e
--- /dev/null
+++ b/src/plugins/platforms/directfb/qdirectfbglcontext.h
@@ -0,0 +1,28 @@
+#ifndef QDIRECTFBGLCONTEXT_H
+#define QDIRECTFBGLCONTEXT_H
+
+#include <QPlatformGLContext>
+
+#include "qdirectfbconvenience.h"
+
+class QDirectFbGLContext : public QPlatformGLContext
+{
+public:
+    explicit QDirectFbGLContext(IDirectFBGL *glContext);
+
+    void makeCurrent();
+    void doneCurrent();
+    void swapBuffers();
+    void *getProcAddress(const QString &procName);
+
+    QPlatformWindowFormat platformWindowFormat() const;
+
+
+private:
+    IDirectFBGL *m_dfbGlContext;
+
+    QPlatformWindowFormat m_windowFormat;
+
+};
+
+#endif // QDIRECTFBGLCONTEXT_H
diff --git a/src/plugins/platforms/directfb/qdirectfbwindow.cpp b/src/plugins/platforms/directfb/qdirectfbwindow.cpp
index 30e6f5a..f82fbd6 100644
--- a/src/plugins/platforms/directfb/qdirectfbwindow.cpp
+++ b/src/plugins/platforms/directfb/qdirectfbwindow.cpp
@@ -40,13 +40,14 @@
 ****************************************************************************/
 #include "qdirectfbwindow.h"
 #include "qdirectfbinput.h"
+#include "qdirectfbglcontext.h"
 
 #include <QWidget>
 
 #include <directfb.h>
 
 QDirectFbWindow::QDirectFbWindow(QWidget *tlw, QDirectFbInput *inputhandler)
-    : QPlatformWindow(tlw), m_inputHandler(inputhandler)
+    : QPlatformWindow(tlw), m_inputHandler(inputhandler), m_context(0)
 {
     IDirectFBDisplayLayer *layer = QDirectFbConvenience::dfbDisplayLayer();
     DFBDisplayLayerConfig layerConfig;
@@ -155,3 +156,23 @@ WId QDirectFbWindow::winId() const
     m_dfbWindow->GetID(m_dfbWindow, &id);
     return WId(id);
 }
+
+QPlatformGLContext *QDirectFbWindow::glContext() const
+{
+    if (!m_context) {
+        IDirectFBSurface *surface;
+        DFBResult result = m_dfbWindow->GetSurface(m_dfbWindow,&surface);
+        if (result != DFB_OK) {
+            qWarning("could not retrieve surface in QDirectFbWindow::glContext()");
+            return 0;
+        }
+        IDirectFBGL *gl;
+        result = surface->GetGL(surface,&gl);
+        if (result != DFB_OK) {
+            qWarning("could not retrieve IDirectFBGL in QDirectFbWindow::glContext()");
+            return 0;
+        }
+        const_cast<QDirectFbWindow *>(this)->m_context = new QDirectFbGLContext(gl);
+    }
+    return m_context;
+}
diff --git a/src/plugins/platforms/directfb/qdirectfbwindow.h b/src/plugins/platforms/directfb/qdirectfbwindow.h
index b512afd..eaf5173 100644
--- a/src/plugins/platforms/directfb/qdirectfbwindow.h
+++ b/src/plugins/platforms/directfb/qdirectfbwindow.h
@@ -65,10 +65,13 @@ public:
     void lower();
     WId winId() const;
 
+    QPlatformGLContext *glContext() const;
+
 private:
     IDirectFBWindow *m_dfbWindow;
     QDirectFbInput *m_inputHandler;
 
+    QPlatformGLContext *m_context;
 };
 
 QT_END_NAMESPACE