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Refactored the support for stereo and keystone RTT setup so that it can be applied to an existing Camera.

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This commit is contained in:
Robert Osfield
2013-05-20 19:24:34 +00:00
parent acb4ba8554
commit 455ebbc5f1
8 changed files with 134 additions and 252 deletions
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213
src/osgViewer/View.cpp
View File

@@ -1385,11 +1385,11 @@ static const GLubyte patternCheckerboard[] = {
0xAA, 0xAA, 0xAA, 0xAA};
void View::setUpViewForStereo()
void View::assignStereoOrKeystoneToCamera(osg::Camera* camera, osg::DisplaySettings* ds)
{
osg::DisplaySettings* ds = _displaySettings.valid() ? _displaySettings.get() : osg::DisplaySettings::instance().get();
if (!ds->getStereo()) return;
if (!camera || camera->getGraphicsContext()==0) return;
if (!ds->getStereo() && !ds->getKeystoneHint()) return;
ds->setUseSceneViewForStereoHint(false);
typedef std::vector< osg::ref_ptr<Keystone> > Keystones;
@@ -1418,60 +1418,47 @@ void View::setUpViewForStereo()
double distance = osg::DisplaySettings::instance()->getScreenDistance();
double vfov = osg::RadiansToDegrees(atan2(height/2.0f,distance)*2.0);
getCamera()->setProjectionMatrixAsPerspective( vfov, width/height, 1.0f,10000.0f);
camera->setProjectionMatrixAsPerspective( vfov, width/height, 1.0f,10000.0f);
}
int screenNum = 0;
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
OSG_NOTICE<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
// unsigned int numScreens = wsi->getNumScreens(si);
osg::ref_ptr<osg::GraphicsContext> gc = camera->getGraphicsContext();
osg::GraphicsContext::ScreenIdentifier si;
si.readDISPLAY();
osg::ref_ptr<osg::GraphicsContext::Traits> traits = const_cast<osg::GraphicsContext::Traits*>(camera->getGraphicsContext()->getTraits());
// displayNum has not been set so reset it to 0.
if (si.displayNum<0) si.displayNum = 0;
si.screenNum = screenNum;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
// width/=2; height/=2;
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits(ds);
traits->hostName = si.hostName;
traits->displayNum = si.displayNum;
traits->screenNum = si.screenNum;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->sharedContext = 0;
OSG_NOTICE<<"traits->stencil="<<traits->stencil<<std::endl;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (!gc)
if (!ds->getStereo())
{
OSG_NOTICE<<"GraphicsWindow has not been created successfully."<<std::endl;
// load or create a Keystone object
osg::ref_ptr<osgViewer::Keystone> keystone = 0;
if (!(ds->getKeystones().empty())) keystone = dynamic_cast<osgViewer::Keystone*>(ds->getKeystones().front().get());
if (!keystone) keystone = new osgViewer::Keystone;
// create distortion texture
osg::ref_ptr<osg::Texture> texture = createDistortionTexture(traits->width, traits->height);
// create RTT Camera
assignRenderToTextureCamera(gc.get(), traits->width, traits->height, texture.get());
// create Keystone distortion camera
osg::ref_ptr<osg::Camera> distortion_camera = assignKeystoneDistortionCamera(ds, gc.get(),
0, 0, traits->width, traits->height,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
texture.get(), keystone.get());
// attach Keystone editing event handler.
distortion_camera->addEventCallback(new KeystoneHandler(keystone.get()));
camera->setGraphicsContext(0);
return;
}
switch(ds->getStereoMode())
{
case(osg::DisplaySettings::QUAD_BUFFER):
{
// disconect the camera from the graphics context.
camera->setGraphicsContext(0);
// left Camera left buffer
osg::ref_ptr<osg::Camera> left_camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK_LEFT : GL_FRONT_LEFT, -1.0);
left_camera->setClearMask(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
@@ -1556,6 +1543,9 @@ void View::setUpViewForStereo()
}
case(osg::DisplaySettings::ANAGLYPHIC):
{
// disconect the camera from the graphics context.
camera->setGraphicsContext(0);
// left Camera red
osg::ref_ptr<osg::Camera> left_camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK : GL_FRONT, -1.0);
left_camera->setClearMask(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
@@ -1635,9 +1625,9 @@ void View::setUpViewForStereo()
right_keystone_camera->getOrCreateStateSet()->setAttribute(new osg::ColorMask(false, true, true, true));
// attach Keystone editing event handler.
right_keystone_camera->addEventCallback(new KeystoneHandler(keystone.get()));
left_keystone_camera->addEventCallback(new KeystoneHandler(keystone.get()));
getCamera()->setAllowEventFocus(false);
camera->setAllowEventFocus(false);
}
else
@@ -1668,15 +1658,17 @@ void View::setUpViewForStereo()
// create Keystone distortion camera
osg::ref_ptr<osg::Camera> camera = assignKeystoneDistortionCamera(ds, gc.get(),
osg::ref_ptr<osg::Camera> distortion_camera = assignKeystoneDistortionCamera(ds, gc.get(),
0, 0, traits->width, traits->height,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
texture.get(), keystone.get());
camera->setRenderOrder(osg::Camera::NESTED_RENDER, 2);
distortion_camera->setRenderOrder(osg::Camera::NESTED_RENDER, 2);
// attach Keystone editing event handler.
camera->addEventCallback(new KeystoneHandler(keystone.get()));
distortion_camera->addEventCallback(new KeystoneHandler(keystone.get()));
camera->setAllowEventFocus(false);
}
}
@@ -1684,6 +1676,9 @@ void View::setUpViewForStereo()
}
case(osg::DisplaySettings::HORIZONTAL_SPLIT):
{
// disconect the camera from the graphics context.
camera->setGraphicsContext(0);
bool left_eye_left_viewport = ds->getSplitStereoHorizontalEyeMapping()==osg::DisplaySettings::LEFT_EYE_LEFT_VIEWPORT;
int left_start = (left_eye_left_viewport) ? 0 : traits->width/2;
int right_start = (left_eye_left_viewport) ? traits->width/2 : 0;
@@ -1765,7 +1760,7 @@ void View::setUpViewForStereo()
// attach Keystone editing event handler.
right_keystone_camera->addEventCallback(new KeystoneHandler(right_keystone.get()));
getCamera()->setAllowEventFocus(false);
camera->setAllowEventFocus(false);
}
@@ -1773,6 +1768,9 @@ void View::setUpViewForStereo()
}
case(osg::DisplaySettings::VERTICAL_SPLIT):
{
// disconect the camera from the graphics context.
camera->setGraphicsContext(0);
bool left_eye_bottom_viewport = ds->getSplitStereoVerticalEyeMapping()==osg::DisplaySettings::LEFT_EYE_BOTTOM_VIEWPORT;
int left_start = (left_eye_bottom_viewport) ? 0 : traits->height/2;
int right_start = (left_eye_bottom_viewport) ? traits->height/2 : 0;
@@ -1861,7 +1859,7 @@ void View::setUpViewForStereo()
// attach Keystone editing event handler.
right_keystone_camera->addEventCallback(new KeystoneHandler(right_keystone.get()));
getCamera()->setAllowEventFocus(false);
camera->setAllowEventFocus(false);
}
@@ -1869,6 +1867,9 @@ void View::setUpViewForStereo()
}
case(osg::DisplaySettings::LEFT_EYE):
{
// disconect the camera from the graphics context.
camera->setGraphicsContext(0);
// single window, whole window, just left eye offsets
osg::ref_ptr<osg::Camera> left_camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK : GL_FRONT, -1.0);
@@ -1903,20 +1904,23 @@ void View::setUpViewForStereo()
// create Keystone distortion camera
osg::ref_ptr<osg::Camera> camera = assignKeystoneDistortionCamera(ds, gc.get(),
osg::ref_ptr<osg::Camera> distortion_camera = assignKeystoneDistortionCamera(ds, gc.get(),
0, 0, traits->width, traits->height,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
texture.get(), keystone.get());
camera->setRenderOrder(osg::Camera::NESTED_RENDER, 2);
distortion_camera->setRenderOrder(osg::Camera::NESTED_RENDER, 2);
// attach Keystone editing event handler.
camera->addEventCallback(new KeystoneHandler(keystone.get()));
distortion_camera->addEventCallback(new KeystoneHandler(keystone.get()));
}
break;
}
case(osg::DisplaySettings::RIGHT_EYE):
{
// disconect the camera from the graphics context.
camera->setGraphicsContext(0);
// single window, whole window, just right eye offsets
osg::ref_ptr<osg::Camera> right_camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK : GL_FRONT, 1.0);
@@ -1950,15 +1954,15 @@ void View::setUpViewForStereo()
right_camera->attach(osg::Camera::COLOR_BUFFER, texture.get());
// create Keystone distortion camera
osg::ref_ptr<osg::Camera> camera = assignKeystoneDistortionCamera(ds, gc.get(),
0, 0, traits->width, traits->height,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
texture.get(), keystone.get());
osg::ref_ptr<osg::Camera> distortion_camera = assignKeystoneDistortionCamera(ds, gc.get(),
0, 0, traits->width, traits->height,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
texture.get(), keystone.get());
camera->setRenderOrder(osg::Camera::NESTED_RENDER, 1);
distortion_camera->setRenderOrder(osg::Camera::NESTED_RENDER, 1);
// attach Keystone editing event handler.
camera->addEventCallback(new KeystoneHandler(keystone.get()));
distortion_camera->addEventCallback(new KeystoneHandler(keystone.get()));
}
break;
}
@@ -1966,6 +1970,9 @@ void View::setUpViewForStereo()
case(osg::DisplaySettings::VERTICAL_INTERLACE):
case(osg::DisplaySettings::CHECKERBOARD):
{
// disconect the camera from the graphics context.
camera->setGraphicsContext(0);
// set up the stencil buffer
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
@@ -2016,93 +2023,29 @@ void View::setUpViewForStereo()
// left Camera
{
osg::ref_ptr<osg::Camera> camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK : GL_FRONT, -1.0);
camera->setClearMask(0);
camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
camera->setRenderOrder(osg::Camera::NESTED_RENDER, 1);
osg::ref_ptr<osg::Camera> left_camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK : GL_FRONT, -1.0);
left_camera->setClearMask(0);
left_camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
left_camera->setRenderOrder(osg::Camera::NESTED_RENDER, 1);
osg::ref_ptr<osg::Stencil> stencil = new osg::Stencil;
stencil->setFunction(osg::Stencil::EQUAL, 0, ~0u);
stencil->setOperation(osg::Stencil::KEEP, osg::Stencil::KEEP, osg::Stencil::KEEP);
camera->getOrCreateStateSet()->setAttributeAndModes(stencil.get(), osg::StateAttribute::ON);
left_camera->getOrCreateStateSet()->setAttributeAndModes(stencil.get(), osg::StateAttribute::ON);
}
// right Camera
{
osg::ref_ptr<osg::Camera> camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK : GL_FRONT, 1.0);
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
camera->setRenderOrder(osg::Camera::NESTED_RENDER, 2);
osg::ref_ptr<osg::Camera> right_camera = assignStereoCamera(ds, gc.get(), 0, 0, traits->width, traits->height, traits->doubleBuffer ? GL_BACK : GL_FRONT, 1.0);
right_camera->setClearMask(GL_DEPTH_BUFFER_BIT);
right_camera->setRenderOrder(osg::Camera::NESTED_RENDER, 2);
osg::ref_ptr<osg::Stencil> stencil = new osg::Stencil;
stencil->setFunction(osg::Stencil::NOTEQUAL, 0, ~0u);
stencil->setOperation(osg::Stencil::KEEP, osg::Stencil::KEEP, osg::Stencil::KEEP);
camera->getOrCreateStateSet()->setAttributeAndModes(stencil.get(), osg::StateAttribute::ON);
right_camera->getOrCreateStateSet()->setAttributeAndModes(stencil.get(), osg::StateAttribute::ON);
}
break;
}
}
}
void View::setUpViewForKeystone(Keystone* keystone)
{
int screenNum = 0;
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
OSG_NOTICE<<"Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
osg::GraphicsContext::ScreenIdentifier si;
si.readDISPLAY();
// displayNum has not been set so reset it to 0.
if (si.displayNum<0) si.displayNum = 0;
si.screenNum = screenNum;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
// width/=2; height/=2;
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->hostName = si.hostName;
traits->displayNum = si.displayNum;
traits->screenNum = si.screenNum;
traits->x = 0;
traits->y = 0;
traits->width = width;
traits->height = height;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->sharedContext = 0;
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
if (!gc)
{
OSG_NOTICE<<"GraphicsWindow has not been created successfully."<<std::endl;
return;
}
osg::DisplaySettings* ds = _displaySettings.valid() ? _displaySettings.get() : osg::DisplaySettings::instance().get();
// create distortion texture
osg::ref_ptr<osg::Texture> texture = createDistortionTexture(width, height);
// create RTT Camera
assignRenderToTextureCamera(gc.get(), width, height, texture.get());
// create Keystone distortion camera
osg::ref_ptr<osg::Camera> camera = assignKeystoneDistortionCamera(ds, gc.get(),
0, 0, width, height,
traits->doubleBuffer ? GL_BACK : GL_FRONT,
texture.get(), keystone);
// attach Keystone editing event handler.
camera->addEventCallback(new KeystoneHandler(keystone));
}