Make the eglfs and eglfs-viv detection and build work for INTEGRITY.

The majority of these changes is about #ifdef-ing the Linux-specific use
of /dev/fb0.
The display handle is also acquired using fbGetDisplay(), which is
equivalent to fbGetDisplayByIndex(0) but is also portable.

Change-Id: I6f460edc9c06ae7461a6aab2a816ac6f645208c4
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>

config.tests/qpa/eglfs-viv/eglfs-viv.cpp

@@ -43,6 +43,6 @@
 
 int main(int, char **)
 {
-    fbGetDisplayByIndex(0);
+    fbGetDisplay();
     return 0;
 }

config.tests/qpa/eglfs-viv/eglfs-viv.pro

@@ -1,6 +1,16 @@
 SOURCES = eglfs-viv.cpp
+integrity {
+  DEFINES += EGL_API_FB=1
+} else {
   DEFINES += LINUX=1 EGL_API_FB=1
-
+}
 CONFIG -= qt
 
 LIBS += -lEGL -lGLESv2 -lGAL
+
+for(p, QMAKE_LIBDIR_OPENGL_ES2) {
+    exists($$p):LIBS += -L$$p
+}
+
+!isEmpty(QMAKE_INCDIR_EGL): INCLUDEPATH += $$QMAKE_INCDIR_EGL
+!isEmpty(QMAKE_LIBS_EGL): LIBS += $$QMAKE_LIBS_EGL

src/gui/opengl/qopenglfunctions.cpp

@@ -47,6 +47,10 @@
 #include <qpa/qplatformintegration.h>
 #include <QtCore/qloggingcategory.h>
 
+#ifdef Q_OS_INTEGRITY
+#include <EGL/egl.h>
+#endif
+
 #ifndef GL_FRAMEBUFFER_SRGB_CAPABLE_EXT
 #define GL_FRAMEBUFFER_SRGB_CAPABLE_EXT   0x8DBA
 #endif

src/plugins/platforms/eglfs/deviceintegration/eglfs_viv/qeglfsvivintegration.cpp

@@ -41,6 +41,10 @@
 #include <EGL/eglvivante.h>
 #include <QDebug>
 
+#ifdef Q_OS_INTEGRITY
+extern "C" void VivanteInit(void);
+#endif
+
 QT_BEGIN_NAMESPACE
 
 void QEglFSVivIntegration::platformInit()
@@ -57,6 +61,10 @@ void QEglFSVivIntegration::platformInit()
         qputenv("FB_MULTI_BUFFER", "2");
     }
 
+#ifdef Q_OS_INTEGRITY
+    VivanteInit();
+#endif
+
     mNativeDisplay = fbGetDisplayByIndex(framebufferIndex());
     fbGetDisplayGeometry(mNativeDisplay, &width, &height);
     mScreenSize.setHeight(height);

src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp

@@ -120,11 +120,15 @@ static int framebuffer = -1;
 
 QByteArray QEGLDeviceIntegration::fbDeviceName() const
 {
+#ifdef Q_OS_LINUX
     QByteArray fbDev = qgetenv("QT_QPA_EGLFS_FB");
     if (fbDev.isEmpty())
         fbDev = QByteArrayLiteral("/dev/fb0");
 
     return fbDev;
+#else
+    return QByteArray();
+#endif
 }
 
 int QEGLDeviceIntegration::framebufferIndex() const
@@ -141,6 +145,7 @@ int QEGLDeviceIntegration::framebufferIndex() const
 
 void QEGLDeviceIntegration::platformInit()
 {
+#ifdef Q_OS_LINUX
     QByteArray fbDev = fbDeviceName();
 
     framebuffer = qt_safe_open(fbDev, O_RDONLY);
@@ -153,12 +158,15 @@ void QEGLDeviceIntegration::platformInit()
 #ifdef FBIOBLANK
     ioctl(framebuffer, FBIOBLANK, VESA_NO_BLANKING);
 #endif
+#endif
 }
 
 void QEGLDeviceIntegration::platformDestroy()
 {
+#ifdef Q_OS_LINUX
     if (framebuffer != -1)
         close(framebuffer);
+#endif
 }
 
 EGLNativeDisplayType QEGLDeviceIntegration::platformDisplay() const
@@ -307,7 +315,7 @@ void QEGLDeviceIntegration::waitForVSync(QPlatformSurface *surface) const
 {
     Q_UNUSED(surface);
 
-#if defined(FBIO_WAITFORVSYNC)
+#if defined(Q_OS_LINUX) && defined(FBIO_WAITFORVSYNC)
     static const bool forceSync = qEnvironmentVariableIntValue("QT_QPA_EGLFS_FORCEVSYNC");
     if (forceSync && framebuffer != -1) {
         int arg = 0;

src/plugins/platforms/eglfs/qeglfshooks.cpp

@@ -66,7 +66,7 @@ private:
 
 Q_GLOBAL_STATIC(DeviceIntegration, deviceIntegration)
 
-DeviceIntegration::DeviceIntegration()
+DeviceIntegration::DeviceIntegration() : m_integration(0)
 {
     QStringList pluginKeys = QEGLDeviceIntegrationFactory::keys();
     if (!pluginKeys.isEmpty()) {