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FreeCAD-VR: First succesfull render on the Rift!
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@jriegel
jriegel committed Sep 13, 2014
1 parent c0152ee commit ad2406a
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Showing 2 changed files with 57 additions and 35 deletions.
83 changes: 50 additions & 33 deletions src/Gui/View3DInventorRiftViewer.cpp
View file
Expand Up @@ -78,7 +78,7 @@
class CoinRiftWidget : public QGLWidget
{
ovrHmd hmd;
ovrHmdDesc hmdDesc;
//ovrHmdDesc hmdDesc;
//ovrEyeType eyes[2];
ovrEyeRenderDesc eyeRenderDesc[2];
ovrTexture eyeTexture[2];
Expand Down Expand Up @@ -132,23 +132,24 @@ CoinRiftWidget::CoinRiftWidget() : QGLWidget()
hmd = ovrHmd_Create(0);
if (!hmd) {
qDebug() << "Could not find Rift device.";
exit(2);
throw;
}

if (!ovrHmd_ConfigureTracking (hmd, ovrTrackingCap_Orientation |
ovrTrackingCap_MagYawCorrection |
ovrTrackingCap_Position,
ovrTrackingCap_Orientation)) { // Capabilities we require.
qDebug() << "Could not start Rift motion sensor.";
exit(3);
throw;
}

resize(hmdDesc.Resolution.w, hmdDesc.Resolution.h);
resize(hmd->Resolution.w, hmd->Resolution.h);

// Configure stereo settings.
ovrSizei recommenedTex0Size = ovrHmd_GetFovTextureSize(hmd, ovrEye_Left,
hmdDesc.DefaultEyeFov[0], 1.0f);
hmd->DefaultEyeFov[0], 1.0f);
ovrSizei recommenedTex1Size = ovrHmd_GetFovTextureSize(hmd, ovrEye_Right,
hmdDesc.DefaultEyeFov[1], 1.0f);
hmd->DefaultEyeFov[1], 1.0f);

#ifdef USE_SO_OFFSCREEN_RENDERER
renderer = new SoOffscreenRenderer(SbViewportRegion(std::max(recommenedTex0Size.w, recommenedTex0Size.w),
Expand Down Expand Up @@ -179,8 +180,8 @@ CoinRiftWidget::CoinRiftWidget() : QGLWidget()
// Populate ovrEyeDesc[2].
eyeRenderDesc[0].Eye = ovrEye_Left;
eyeRenderDesc[1].Eye = ovrEye_Right;
eyeRenderDesc[0].Fov = hmdDesc.DefaultEyeFov[0];
eyeRenderDesc[1].Fov = hmdDesc.DefaultEyeFov[1];
eyeRenderDesc[0].Fov = hmd->DefaultEyeFov[0];
eyeRenderDesc[1].Fov = hmd->DefaultEyeFov[1];
#ifdef USE_SO_OFFSCREEN_RENDERER
eyeTexture[0].Header.TextureSize.w = renderer->getViewportRegion().getViewportSizePixels().getValue()[0];
eyeTexture[0].Header.TextureSize.h = renderer->getViewportRegion().getViewportSizePixels().getValue()[1];
Expand All @@ -192,14 +193,14 @@ CoinRiftWidget::CoinRiftWidget() : QGLWidget()
#endif
eyeTexture[0].Header.RenderViewport.Pos.x = 0;
eyeTexture[0].Header.RenderViewport.Pos.y = 0;
eyeTexture[0].Header.RenderViewport.Size = eyeTexture[1].Header.TextureSize;
eyeTexture[0].Header.RenderViewport.Pos = eyeTexture[0].Header.RenderViewport.Pos;
eyeTexture[0].Header.RenderViewport.Size = eyeTexture[1].Header.TextureSize;
eyeTexture[0].Header.RenderViewport.Size = eyeTexture[0].Header.TextureSize;
eyeTexture[1].Header.RenderViewport.Pos = eyeTexture[0].Header.RenderViewport.Pos;
eyeTexture[1].Header.RenderViewport.Size = eyeTexture[1].Header.TextureSize;

const int backBufferMultisample = 0; // TODO This is a guess?
ovrGLConfig cfg;
cfg.OGL.Header.API = ovrRenderAPI_OpenGL;
cfg.OGL.Header.RTSize = hmdDesc.Resolution;
cfg.OGL.Header.RTSize = hmd->Resolution;
cfg.OGL.Header.Multisample = backBufferMultisample;
cfg.OGL.Window = reinterpret_cast<HWND>(winId());
makeCurrent();
Expand All @@ -209,17 +210,17 @@ CoinRiftWidget::CoinRiftWidget() : QGLWidget()
//qDebug() << "Context:" << cfg.OGL.WglContext;
qDebug() << "DC:" << cfg.OGL.DC;

hmdDesc.DistortionCaps = 0;
hmdDesc.DistortionCaps |= ovrDistortionCap_Chromatic;
// hmdDesc.DistortionCaps |= ovrDistortionCap_TimeWarp; // Produces black screen...
hmdDesc.DistortionCaps |= ovrDistortionCap_Vignette;
int DistortionCaps = 0;
DistortionCaps |= ovrDistortionCap_Chromatic;
// DistortionCaps |= ovrDistortionCap_TimeWarp; // Produces black screen...
DistortionCaps |= ovrDistortionCap_Vignette;

bool VSyncEnabled(false); // TODO This is a guess.
if (!ovrHmd_ConfigureRendering( hmd,
&cfg.Config,
/*(VSyncEnabled ? 0 : ovrHmdCap_NoVSync),*/
hmdDesc.DistortionCaps,
hmdDesc.DefaultEyeFov,//eyes,
DistortionCaps,
hmd->DefaultEyeFov,//eyes,
eyeRenderDesc)) {
qDebug() << "Could not configure OVR rendering.";
exit(3);
Expand Down Expand Up @@ -348,22 +349,24 @@ void CoinRiftWidget::initializeGL()


void CoinRiftWidget::paintGL()
{
{
const int ms(1000 / 60 /*fps*/);
QTimer::singleShot(ms, this, SLOT(updateGL()));
makeCurrent();

ovrPosef eyePose[2];

glEnable(GL_TEXTURE_2D);

/*ovrFrameTiming hmdFrameTiming =*/ ovrHmd_BeginFrame(hmd, 0);
for (int eyeIndex = 0; eyeIndex < ovrEye_Count; eyeIndex++) {
ovrEyeType eye = hmdDesc.EyeRenderOrder[eyeIndex];
ovrPosef eyePose = ovrHmd_GetEyePose(hmd, eye);
ovrEyeType eye = hmd->EyeRenderOrder[eyeIndex];
eyePose[eye] = ovrHmd_GetEyePose(hmd, eye);

camera[eye]->orientation.setValue(eyePose.Orientation.x,
eyePose.Orientation.y,
eyePose.Orientation.z,
eyePose.Orientation.w);
camera[eye]->orientation.setValue(eyePose[eye].Orientation.x,
eyePose[eye].Orientation.y,
eyePose[eye].Orientation.z,
eyePose[eye].Orientation.w);

SbVec3f originalPosition(camera[eye]->position.getValue());
camera[eye]->position.setValue(originalPosition - SbVec3f(eyeRenderDesc[eye].ViewAdjust.x,
Expand Down Expand Up @@ -403,9 +406,10 @@ void CoinRiftWidget::paintGL()

camera[eye]->position.setValue(originalPosition);

// Submit the texture for distortion.
ovrHmd_EndFrame(hmd, &eyePose, &eyeTexture[eye]);
}

// Submit the texture for distortion.
ovrHmd_EndFrame(hmd, eyePose, eyeTexture);

// Swap buffers.
glDisable(GL_CULL_FACE);
Expand All @@ -419,19 +423,31 @@ void CoinRiftWidget::paintGL()
}


static void cleanup()
static CoinRiftWidget *window=0;


void oculusStop()
{
//SoDB::finish();
if(window){
delete window;
window = 0;
}

ovr_Shutdown();
}

bool oculusUp(void)
{
return window!=0;
}

int oculusTest(void)
int oculusStart(void)
{
//SoDB::init();

//QApplication app(argc, argv);
qAddPostRoutine(cleanup);
//qAddPostRoutine(cleanup);

// Moved here because of https://developer.oculusvr.com/forums/viewtopic.php?f=17&t=7915&p=108503#p108503
// Init libovr.
Expand All @@ -440,8 +456,8 @@ int oculusTest(void)
return 0;
}

CoinRiftWidget window;
window.show();
window = new CoinRiftWidget;
window->show();

// An example scene.
static const char * inlineSceneGraph[] = {
Expand Down Expand Up @@ -479,8 +495,9 @@ int oculusTest(void)
SoInput in;
in.setStringArray(inlineSceneGraph);

window.setSceneGraph(SoDB::readAll(&in));
window->setSceneGraph(SoDB::readAll(&in));

return 1;
//return app.exec();
}

Expand Down
9 changes: 7 additions & 2 deletions src/Gui/View3DInventorViewer.cpp
View file
Expand Up @@ -1637,13 +1637,18 @@ void View3DInventorViewer::animatedViewAll(int steps, int ms)
}

#if BUILD_VR
extern int oculusTest(void);
extern int oculusStart(void);
extern bool oculusUp (void);
extern void oculusStop (void);
#endif

void View3DInventorViewer::viewVR(void)
{
#if BUILD_VR
oculusTest();
if(oculusUp())
oculusStop();
else
oculusStart();
#endif
}

Expand Down

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