added linux makefile

modules/oculus_sdk_linux/LibOVR/Src/CAPI/CAPI_HMDRenderState.cpp

@@ -0,0 +1,143 @@
+/************************************************************************************
+
+Filename    :   OVR_CAPI_HMDRenderState.cpp
+Content     :   Combines all of the rendering state associated with the HMD
+Created     :   February 2, 2014
+Authors     :   Michael Antonov
+
+Copyright   :   Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "CAPI_HMDRenderState.h"
+
+namespace OVR { namespace CAPI {
+
+
+//-------------------------------------------------------------------------------------
+// ***** HMDRenderState
+
+
+HMDRenderState::HMDRenderState(ovrHmd hmd, Profile* userProfile, const OVR::HMDInfo& hmdInfo)
+    : HMD(hmd), HMDInfo(hmdInfo)
+{
+	RenderInfo = GenerateHmdRenderInfoFromHmdInfo( HMDInfo, userProfile );
+
+    Distortion[0] = CalculateDistortionRenderDesc(StereoEye_Left,  RenderInfo, 0);
+    Distortion[1] = CalculateDistortionRenderDesc(StereoEye_Right, RenderInfo, 0);
+
+    ClearColor[0] = ClearColor[1] = ClearColor[2] = ClearColor[3] =0.0f;
+
+    EnabledHmdCaps = 0;
+}
+
+HMDRenderState::~HMDRenderState()
+{
+}
+
+ovrHmdDesc HMDRenderState::GetDesc()
+{
+    ovrHmdDesc d;
+    memset(&d, 0, sizeof(d));
+    
+    d.Type = ovrHmd_Other;
+     
+    d.ProductName       = HMDInfo.ProductName;    
+    d.Manufacturer      = HMDInfo.Manufacturer;
+    d.Resolution.w      = HMDInfo.ResolutionInPixels.w;
+    d.Resolution.h      = HMDInfo.ResolutionInPixels.h;
+    d.WindowsPos.x      = HMDInfo.DesktopX;
+    d.WindowsPos.y      = HMDInfo.DesktopY;
+    d.DisplayDeviceName = HMDInfo.DisplayDeviceName;
+    d.DisplayId         = HMDInfo.DisplayId;
+
+    d.HmdCaps           = ovrHmdCap_Present | ovrHmdCap_NoVSync;
+    d.SensorCaps        = ovrSensorCap_YawCorrection | ovrSensorCap_Orientation;
+    d.DistortionCaps    = ovrDistortionCap_Chromatic | ovrDistortionCap_TimeWarp | ovrDistortionCap_Vignette;
+
+    if (strstr(HMDInfo.ProductName, "DK1"))
+    {
+        d.Type = ovrHmd_DK1;        
+    }
+    else if (strstr(HMDInfo.ProductName, "DK2"))
+    {
+        d.Type        = ovrHmd_DK2;
+        d.HmdCaps    |= ovrHmdCap_LowPersistence |
+                        ovrHmdCap_LatencyTest | ovrHmdCap_DynamicPrediction;
+        d.SensorCaps |= ovrSensorCap_Position;
+    }
+        
+    DistortionRenderDesc& leftDistortion  = Distortion[0];
+    DistortionRenderDesc& rightDistortion = Distortion[1];
+  
+    // The suggested FOV (assuming eye rotation)
+    d.DefaultEyeFov[0] = CalculateFovFromHmdInfo(StereoEye_Left, leftDistortion, RenderInfo, OVR_DEFAULT_EXTRA_EYE_ROTATION);
+    d.DefaultEyeFov[1] = CalculateFovFromHmdInfo(StereoEye_Right, rightDistortion, RenderInfo, OVR_DEFAULT_EXTRA_EYE_ROTATION);
+
+    // FOV extended across the entire screen
+    d.MaxEyeFov[0] = GetPhysicalScreenFov(StereoEye_Left, leftDistortion);
+    d.MaxEyeFov[1] = GetPhysicalScreenFov(StereoEye_Right, rightDistortion);
+
+    if (HMDInfo.Shutter.Type == HmdShutter_RollingRightToLeft)
+    {
+        d.EyeRenderOrder[0] = ovrEye_Right;
+        d.EyeRenderOrder[1] = ovrEye_Left;
+    }
+    else
+    {
+        d.EyeRenderOrder[0] = ovrEye_Left;
+        d.EyeRenderOrder[1] = ovrEye_Right;
+    }    
+
+    return d;
+}
+
+
+ovrSizei HMDRenderState::GetFOVTextureSize(int eye, ovrFovPort fov, float pixelsPerDisplayPixel)
+{
+    OVR_ASSERT((unsigned)eye < 2);
+    StereoEye seye = (eye == ovrEye_Left) ? StereoEye_Left : StereoEye_Right;
+    return CalculateIdealPixelSize(seye, Distortion[eye], fov, pixelsPerDisplayPixel);
+}
+
+ovrEyeRenderDesc HMDRenderState::calcRenderDesc(ovrEyeType eyeType, const ovrFovPort& fov)
+{    
+    HmdRenderInfo&   hmdri = RenderInfo;
+    StereoEye        eye   = (eyeType == ovrEye_Left) ? StereoEye_Left : StereoEye_Right;
+    ovrEyeRenderDesc e0;
+    
+    e0.Eye                       = eyeType;
+    e0.Fov                       = fov;
+    e0.ViewAdjust                = CalculateEyeVirtualCameraOffset(hmdri, eye, false);
+    e0.DistortedViewport         = GetFramebufferViewport(eye, hmdri);
+    e0.PixelsPerTanAngleAtCenter = Distortion[0].PixelsPerTanAngleAtCenter;
+
+    return e0;
+}
+
+
+void HMDRenderState::setupRenderDesc( ovrEyeRenderDesc eyeRenderDescOut[2],
+                                      const ovrFovPort eyeFovIn[2] )
+{
+    eyeRenderDescOut[0] = EyeRenderDesc[0] = calcRenderDesc(ovrEye_Left,  eyeFovIn[0]);
+    eyeRenderDescOut[1] = EyeRenderDesc[1] = calcRenderDesc(ovrEye_Right, eyeFovIn[1]);   
+}
+
+
+}} // namespace OVR::CAPI
+