1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/LibOVR/Src/Displays/OVR_Linux_SDKWindow.h	Wed Jan 14 06:51:16 2015 +0200
     1.3 @@ -0,0 +1,147 @@
     1.4 +/*******************************************************************************
     1.5 +
     1.6 +Filename    :   OVR_Linux_SDKWindow.h
     1.7 +Content     :   SDK generated Linux window.
     1.8 +Created     :   October 1, 2014
     1.9 +Authors     :   James Hughes
    1.10 +
    1.11 +Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
    1.12 +
    1.13 +Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
    1.14 +you may not use the Oculus VR Rift SDK except in compliance with the License, 
    1.15 +which is provided at the time of installation or download, or which 
    1.16 +otherwise accompanies this software in either electronic or hard copy form.
    1.17 +
    1.18 +You may obtain a copy of the License at
    1.19 +
    1.20 +http://www.oculusvr.com/licenses/LICENSE-3.2 
    1.21 +
    1.22 +Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
    1.23 +distributed under the License is distributed on an "AS IS" BASIS,
    1.24 +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    1.25 +See the License for the specific language governing permissions and
    1.26 +limitations under the License.
    1.27 +
    1.28 +*******************************************************************************/
    1.29 +
    1.30 +#ifndef OVR_Linux_SDKWindow_h
    1.31 +#define OVR_Linux_SDKWindow_h
    1.32 +
    1.33 +#include "../OVR_CAPI.h"
    1.34 +#include "../CAPI/GL/CAPI_GL_Util.h"
    1.35 +
    1.36 +#include <X11/Xlib.h>
    1.37 +#include <X11/Xatom.h>
    1.38 +#include <X11/extensions/Xrandr.h>
    1.39 +#include <X11/Xresource.h>
    1.40 +#include <GL/glx.h>
    1.41 +
    1.42 +namespace OVR {
    1.43 +
    1.44 +enum DistortionRotation
    1.45 +{
    1.46 +    DistRotateNone,
    1.47 +    DistRotateCCW90
    1.48 +};
    1.49 +
    1.50 +struct LinuxDeviceScreen
    1.51 +{
    1.52 +    LinuxDeviceScreen() :
    1.53 +        screen(-1),
    1.54 +        crtcid(0),
    1.55 +        rotation(DistRotateNone),
    1.56 +        productCode(-1),
    1.57 +        width(-1),
    1.58 +        height(-1),
    1.59 +        offsetX(-1),
    1.60 +        offsetY(-1)
    1.61 +    {}
    1.62 +
    1.63 +    void set(int xScreen, XID xid, DistortionRotation rot, int prodCode,
    1.64 +             int w, int h, int x, int y)
    1.65 +    {
    1.66 +        screen      = xScreen;
    1.67 +        crtcid      = xid;
    1.68 +        rotation    = rot;
    1.69 +        productCode = prodCode;
    1.70 +
    1.71 +        width       = w;
    1.72 +        height      = h;
    1.73 +        offsetX     = x;
    1.74 +        offsetY     = y;
    1.75 +    }
    1.76 +
    1.77 +    bool isValid()      {return (screen != -1);}
    1.78 +
    1.79 +    int                 screen;   ///< X Screen this device occupies.
    1.80 +    XID                 crtcid;   ///< XID uniquely identifying this device on XDisplay.
    1.81 +    DistortionRotation  rotation;
    1.82 +    int                 productCode;
    1.83 +
    1.84 +    // Actual width and height of screen.
    1.85 +    int                 width;
    1.86 +    int                 height;
    1.87 +
    1.88 +    // Offset if using twinview
    1.89 +    int                 offsetX;
    1.90 +    int                 offsetY;
    1.91 +};
    1.92 +
    1.93 +class SDKWindow
    1.94 +{
    1.95 +public:
    1.96 +    
    1.97 +    SDKWindow(const ovrHmd& hmd);
    1.98 +    ~SDKWindow();
    1.99 +
   1.100 +    /// Rotation necessary to correctly orient this SDK window.
   1.101 +    DistortionRotation GetDistortionRotation() {return mDeviceScreen.rotation;}
   1.102 +
   1.103 +    struct _XDisplay* GetDisplay()  {return mXDisplay;}
   1.104 +    XVisualInfo* GetVisual()        {return mXVisual;}
   1.105 +    Window GetDrawable()            {return mXWindow;}
   1.106 +    bool HasValidWindow()           {return (mXWindow != 0);}
   1.107 +
   1.108 +    // Choose frame buffer configuration and return fbConfigID. Returns -1 if
   1.109 +    // a failure occurs.
   1.110 +    static int chooseFBConfigID(struct _XDisplay* display, int xscreen);
   1.111 +
   1.112 +    // Obtain visual from frame buffer configuration ID. You must call XFree
   1.113 +    // on the XVisualInfo* pointer.
   1.114 +    static XVisualInfo* getVisual(struct _XDisplay* display,
   1.115 +                                  int fbConfigID, int xscreen);
   1.116 +
   1.117 +    // GLXFBConfig pointer from frame buffer configuration ID. You must call
   1.118 +    // XFree on the GLXFBConfig pointer.
   1.119 +    static GLXFBConfig* getGLXFBConfig(struct _XDisplay* display,
   1.120 +                                       int fbConfigID, int xscreen);
   1.121 +
   1.122 +    static LinuxDeviceScreen findDevScreenForHMD(const ovrHmd& hmd);
   1.123 +    static LinuxDeviceScreen findDevScreenForDevID(const char* deviceID);
   1.124 +
   1.125 +    static DistortionRotation getRotation(const ovrHmd& hmd);
   1.126 +
   1.127 +    // Obtains XVisualInfo for currently bound context. Returns true if a
   1.128 +    // visual was successfully obtained. False otherwise.
   1.129 +    static bool getVisualFromDrawable(GLXDrawable drawable, XVisualInfo* vinfoOut);
   1.130 +
   1.131 +private:
   1.132 +
   1.133 +    /// Constructs SDK window on the given device screen.
   1.134 +    void buildVisualAndWindow(const LinuxDeviceScreen& devScreen);
   1.135 +
   1.136 +    // Added m in front of variables so as to not conflict with X names.
   1.137 +    struct _XDisplay* mXDisplay;
   1.138 +    int               mXScreen;
   1.139 +    XVisualInfo*      mXVisual;
   1.140 +    XContext          mXUniqueContext;
   1.141 +    Window            mXWindow;
   1.142 +    int               mFBConfigID;
   1.143 +
   1.144 +    LinuxDeviceScreen mDeviceScreen;
   1.145 +};
   1.146 +
   1.147 +
   1.148 +} // namespace OVR
   1.149 +
   1.150 +#endif // OVR_Linux_SDKWindow_h