1 files changed, 66 insertions, 17 deletions

diff --git a/LibOVR/Src/CAPI/CAPI_DistortionRenderer.h b/LibOVR/Src/CAPI/CAPI_DistortionRenderer.h
index a256bc6..0c93387 100644
--- a/LibOVR/Src/CAPI/CAPI_DistortionRenderer.h
+++ b/LibOVR/Src/CAPI/CAPI_DistortionRenderer.h
@@ -5,16 +5,16 @@ Content     :   Abstract interface for platform-specific rendering of distortion
 Created     :   February 2, 2014
 Authors     :   Michael Antonov
 
-Copyright   :   Copyright 2014 Oculus VR, Inc. All Rights reserved.
+Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
 
-Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License"); 
+Licensed under the Oculus VR Rift SDK License Version 3.2 (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 
+http://www.oculusvr.com/licenses/LICENSE-3.2 
 
 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,
@@ -30,6 +30,7 @@ limitations under the License.
 #include "CAPI_HMDRenderState.h"
 #include "CAPI_FrameTimeManager.h"
 
+typedef void (*PostDistortionCallback)(void* pRenderContext);
 
 namespace OVR { namespace CAPI {
 
@@ -48,35 +49,52 @@ public:
     
     DistortionRenderer(ovrRenderAPIType api, ovrHmd hmd,
                        FrameTimeManager& timeManager,              
-                       const HMDRenderState& renderState)
-        : RenderAPI(api), HMD(hmd), TimeManager(timeManager), RState(renderState)
-    { }
+                       const HMDRenderState& renderState) :
+		LastUsedOverdriveTextureIndex(-1),
+        LatencyTestActive(false),
+        LatencyTest2Active(false),
+        RenderAPI(api),
+        HMD(hmd),
+        TimeManager(timeManager),
+        RState(renderState),
+        GfxState(),
+        RegisteredPostDistortionCallback(NULL)
+    {
+#ifdef OVR_OS_WIN32
+        timer = CreateWaitableTimer(NULL, TRUE, NULL);
+        OVR_ASSERT(timer != NULL);
+#endif
+    }
     virtual ~DistortionRenderer()
-    { }
+    {
+    }
     
 
     // Configures the Renderer based on externally passed API settings. Must be
     // called before use.
     // Under D3D, apiConfig includes D3D Device pointer, back buffer and other
     // needed structures.
-    virtual bool Initialize(const ovrRenderAPIConfig* apiConfig,
-                            unsigned distortionCaps) = 0;
+    virtual bool Initialize(const ovrRenderAPIConfig* apiConfig) = 0;
 
     // Submits one eye texture for rendering. This is in the separate method to
     // allow "submit as you render" scenarios on horizontal screens where one
     // eye can be scanned out before the other.
-    virtual void SubmitEye(int eyeId, ovrTexture* eyeTexture) = 0;
+    virtual void SubmitEye(int eyeId, const ovrTexture* eyeTexture) = 0;
 
     // Finish the frame, optionally swapping buffers.
     // Many implementations may actually apply the distortion here.
-    virtual void EndFrame(bool swapBuffers, unsigned char* latencyTesterDrawColor,
-                                            unsigned char* latencyTester2DrawColor) = 0;
+    virtual void EndFrame(bool swapBuffers) = 0;
     
+    void RegisterPostDistortionCallback(PostDistortionCallback postDistortionCallback)
+    {
+        RegisteredPostDistortionCallback = postDistortionCallback;
+    }
+
 	// Stores the current graphics pipeline state so it can be restored later.
-	void SaveGraphicsState() { if (!(RState.EnabledHmdCaps & ovrHmdCap_NoRestore)) GfxState->Save(); }
+	void SaveGraphicsState() { if (GfxState && !(RState.DistortionCaps & ovrDistortionCap_NoRestore)) GfxState->Save(); }
 
 	// Restores the saved graphics pipeline state.
-	void RestoreGraphicsState() { if (!(RState.EnabledHmdCaps & ovrHmdCap_NoRestore)) GfxState->Restore(); }
+	void RestoreGraphicsState() { if (GfxState && !(RState.DistortionCaps & ovrDistortionCap_NoRestore)) GfxState->Restore(); }
 
     // *** Creation Factory logic
     
@@ -89,8 +107,40 @@ public:
 
     static CreateFunc APICreateRegistry[ovrRenderAPI_Count];
 
-protected:
+    // Color is expected to be 3 byte RGB
+    void SetLatencyTestColor(unsigned char* color);
+    void SetLatencyTest2Color(unsigned char* color);
     
+protected:
+	// Used for pixel luminance overdrive on DK2 displays
+	// A copy of back buffer images will be ping ponged
+	// TODO: figure out 0 dynamically based on DK2 latency?
+	static const int	NumOverdriveTextures = 2;
+	int					LastUsedOverdriveTextureIndex;
+
+    bool                LatencyTestActive;
+    unsigned char       LatencyTestDrawColor[3];
+    bool                LatencyTest2Active;
+    unsigned char       LatencyTest2DrawColor[3];
+
+    bool IsOverdriveActive()
+	{
+		// doesn't make sense to use overdrive when vsync is disabled as we cannot guarantee
+		// when the rendered frame will be displayed
+		return LastUsedOverdriveTextureIndex >= 0 &&
+                !((RState.EnabledHmdCaps & ovrHmdCap_NoVSync) > 0) &&
+                (RState.DistortionCaps & ovrDistortionCap_Chromatic);
+	}
+
+    void GetOverdriveScales(float& outRiseScale, float& outFallScale);
+
+    double WaitTillTime(double absTime);
+
+#ifdef OVR_OS_WIN32
+    HANDLE timer;
+    LARGE_INTEGER waitableTimerInterval;
+#endif
+
     class GraphicsState : public RefCountBase<GraphicsState>
     {
     public:
@@ -108,11 +158,10 @@ protected:
     FrameTimeManager&       TimeManager;
     const HMDRenderState&   RState;
     Ptr<GraphicsState>      GfxState;
+    PostDistortionCallback  RegisteredPostDistortionCallback;
 };
 
 }} // namespace OVR::CAPI
 
 
 #endif // OVR_CAPI_DistortionRenderer_h
-
-