ovr_sdk

annotate LibOVR/Src/Displays/OVR_Linux_SDKWindow.h @ 0:1b39a1b46319

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initial 0.4.4
author John Tsiombikas <nuclear@member.fsf.org>
date Wed, 14 Jan 2015 06:51:16 +0200
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nuclear@0 1 /*******************************************************************************
nuclear@0 2
nuclear@0 3 Filename : OVR_Linux_SDKWindow.h
nuclear@0 4 Content : SDK generated Linux window.
nuclear@0 5 Created : October 1, 2014
nuclear@0 6 Authors : James Hughes
nuclear@0 7
nuclear@0 8 Copyright : Copyright 2014 Oculus VR, LLC All Rights reserved.
nuclear@0 9
nuclear@0 10 Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License");
nuclear@0 11 you may not use the Oculus VR Rift SDK except in compliance with the License,
nuclear@0 12 which is provided at the time of installation or download, or which
nuclear@0 13 otherwise accompanies this software in either electronic or hard copy form.
nuclear@0 14
nuclear@0 15 You may obtain a copy of the License at
nuclear@0 16
nuclear@0 17 http://www.oculusvr.com/licenses/LICENSE-3.2
nuclear@0 18
nuclear@0 19 Unless required by applicable law or agreed to in writing, the Oculus VR SDK
nuclear@0 20 distributed under the License is distributed on an "AS IS" BASIS,
nuclear@0 21 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nuclear@0 22 See the License for the specific language governing permissions and
nuclear@0 23 limitations under the License.
nuclear@0 24
nuclear@0 25 *******************************************************************************/
nuclear@0 26
nuclear@0 27 #ifndef OVR_Linux_SDKWindow_h
nuclear@0 28 #define OVR_Linux_SDKWindow_h
nuclear@0 29
nuclear@0 30 #include "../OVR_CAPI.h"
nuclear@0 31 #include "../CAPI/GL/CAPI_GL_Util.h"
nuclear@0 32
nuclear@0 33 #include <X11/Xlib.h>
nuclear@0 34 #include <X11/Xatom.h>
nuclear@0 35 #include <X11/extensions/Xrandr.h>
nuclear@0 36 #include <X11/Xresource.h>
nuclear@0 37 #include <GL/glx.h>
nuclear@0 38
nuclear@0 39 namespace OVR {
nuclear@0 40
nuclear@0 41 enum DistortionRotation
nuclear@0 42 {
nuclear@0 43 DistRotateNone,
nuclear@0 44 DistRotateCCW90
nuclear@0 45 };
nuclear@0 46
nuclear@0 47 struct LinuxDeviceScreen
nuclear@0 48 {
nuclear@0 49 LinuxDeviceScreen() :
nuclear@0 50 screen(-1),
nuclear@0 51 crtcid(0),
nuclear@0 52 rotation(DistRotateNone),
nuclear@0 53 productCode(-1),
nuclear@0 54 width(-1),
nuclear@0 55 height(-1),
nuclear@0 56 offsetX(-1),
nuclear@0 57 offsetY(-1)
nuclear@0 58 {}
nuclear@0 59
nuclear@0 60 void set(int xScreen, XID xid, DistortionRotation rot, int prodCode,
nuclear@0 61 int w, int h, int x, int y)
nuclear@0 62 {
nuclear@0 63 screen = xScreen;
nuclear@0 64 crtcid = xid;
nuclear@0 65 rotation = rot;
nuclear@0 66 productCode = prodCode;
nuclear@0 67
nuclear@0 68 width = w;
nuclear@0 69 height = h;
nuclear@0 70 offsetX = x;
nuclear@0 71 offsetY = y;
nuclear@0 72 }
nuclear@0 73
nuclear@0 74 bool isValid() {return (screen != -1);}
nuclear@0 75
nuclear@0 76 int screen; ///< X Screen this device occupies.
nuclear@0 77 XID crtcid; ///< XID uniquely identifying this device on XDisplay.
nuclear@0 78 DistortionRotation rotation;
nuclear@0 79 int productCode;
nuclear@0 80
nuclear@0 81 // Actual width and height of screen.
nuclear@0 82 int width;
nuclear@0 83 int height;
nuclear@0 84
nuclear@0 85 // Offset if using twinview
nuclear@0 86 int offsetX;
nuclear@0 87 int offsetY;
nuclear@0 88 };
nuclear@0 89
nuclear@0 90 class SDKWindow
nuclear@0 91 {
nuclear@0 92 public:
nuclear@0 93
nuclear@0 94 SDKWindow(const ovrHmd& hmd);
nuclear@0 95 ~SDKWindow();
nuclear@0 96
nuclear@0 97 /// Rotation necessary to correctly orient this SDK window.
nuclear@0 98 DistortionRotation GetDistortionRotation() {return mDeviceScreen.rotation;}
nuclear@0 99
nuclear@0 100 struct _XDisplay* GetDisplay() {return mXDisplay;}
nuclear@0 101 XVisualInfo* GetVisual() {return mXVisual;}
nuclear@0 102 Window GetDrawable() {return mXWindow;}
nuclear@0 103 bool HasValidWindow() {return (mXWindow != 0);}
nuclear@0 104
nuclear@0 105 // Choose frame buffer configuration and return fbConfigID. Returns -1 if
nuclear@0 106 // a failure occurs.
nuclear@0 107 static int chooseFBConfigID(struct _XDisplay* display, int xscreen);
nuclear@0 108
nuclear@0 109 // Obtain visual from frame buffer configuration ID. You must call XFree
nuclear@0 110 // on the XVisualInfo* pointer.
nuclear@0 111 static XVisualInfo* getVisual(struct _XDisplay* display,
nuclear@0 112 int fbConfigID, int xscreen);
nuclear@0 113
nuclear@0 114 // GLXFBConfig pointer from frame buffer configuration ID. You must call
nuclear@0 115 // XFree on the GLXFBConfig pointer.
nuclear@0 116 static GLXFBConfig* getGLXFBConfig(struct _XDisplay* display,
nuclear@0 117 int fbConfigID, int xscreen);
nuclear@0 118
nuclear@0 119 static LinuxDeviceScreen findDevScreenForHMD(const ovrHmd& hmd);
nuclear@0 120 static LinuxDeviceScreen findDevScreenForDevID(const char* deviceID);
nuclear@0 121
nuclear@0 122 static DistortionRotation getRotation(const ovrHmd& hmd);
nuclear@0 123
nuclear@0 124 // Obtains XVisualInfo for currently bound context. Returns true if a
nuclear@0 125 // visual was successfully obtained. False otherwise.
nuclear@0 126 static bool getVisualFromDrawable(GLXDrawable drawable, XVisualInfo* vinfoOut);
nuclear@0 127
nuclear@0 128 private:
nuclear@0 129
nuclear@0 130 /// Constructs SDK window on the given device screen.
nuclear@0 131 void buildVisualAndWindow(const LinuxDeviceScreen& devScreen);
nuclear@0 132
nuclear@0 133 // Added m in front of variables so as to not conflict with X names.
nuclear@0 134 struct _XDisplay* mXDisplay;
nuclear@0 135 int mXScreen;
nuclear@0 136 XVisualInfo* mXVisual;
nuclear@0 137 XContext mXUniqueContext;
nuclear@0 138 Window mXWindow;
nuclear@0 139 int mFBConfigID;
nuclear@0 140
nuclear@0 141 LinuxDeviceScreen mDeviceScreen;
nuclear@0 142 };
nuclear@0 143
nuclear@0 144
nuclear@0 145 } // namespace OVR
nuclear@0 146
nuclear@0 147 #endif // OVR_Linux_SDKWindow_h