void WoWVxDisplay::configure(osgViewer::View& view) const
{
OSG_INFO<<"WoWVxDisplay::configure(...)"<<std::endl;
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);
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;
}
int tex_width = width;
int tex_height = height;
int camera_width = tex_width;
int camera_height = tex_height;
osg::Texture2D* texture = new osg::Texture2D;
texture->setTextureSize(tex_width, tex_height);
texture->setInternalFormat(GL_RGB);
texture->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
texture->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
osg::Texture2D* textureD = new osg::Texture2D;
textureD->setTextureSize(tex_width, tex_height);
textureD->setInternalFormat(GL_DEPTH_COMPONENT);
textureD->setFilter(osg::Texture2D::MIN_FILTER,osg::Texture2D::LINEAR);
textureD->setFilter(osg::Texture2D::MAG_FILTER,osg::Texture2D::LINEAR);
#if 0
osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::SEPERATE_WINDOW;
GLenum buffer = GL_FRONT;
#else
osg::Camera::RenderTargetImplementation renderTargetImplementation = osg::Camera::FRAME_BUFFER_OBJECT;
GLenum buffer = GL_FRONT;
#endif
// front face
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setName("Front face camera");
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(0,0,camera_width, camera_height));
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
camera->setAllowEventFocus(false);
// tell the camera to use OpenGL frame buffer object where supported.
camera->setRenderTargetImplementation(renderTargetImplementation);
// attach the texture and use it as the color buffer.
camera->attach(osg::Camera::COLOR_BUFFER, texture);
camera->attach(osg::Camera::DEPTH_BUFFER, textureD);
view.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
}
// WoW display set up.
{
osg::Texture1D *textureHeader = new osg::Texture1D();
// Set up the header
{
unsigned char header[]= {0xF1,_wow_content,_wow_factor,_wow_offset,0x00,0x00,0x00,0x00,0x00,0x00};
// Calc the CRC32
{
unsigned long _register = 0;
for(int i = 0; i < 10; ++i) {
unsigned char mask = 0x80;
unsigned char byte = header[i];
for (int j = 0; j < 8; ++j)
{
bool topBit = (_register & 0x80000000) != 0;
_register <<= 1;
_register ^= ((byte & mask) != 0? 0x1: 0x0);
if (topBit)
{
_register ^= 0x04c11db7;
}
mask >>= 1;
}
}
unsigned char *p = (unsigned char*) &_register;
for(size_t i = 0; i < 4; ++i)
{
header[i+6] = p[3-i];
}
}
osg::ref_ptr<osg::Image> imageheader = new osg::Image();
imageheader->allocateImage(256,1,1,GL_LUMINANCE,GL_UNSIGNED_BYTE);
{
unsigned char *cheader = imageheader->data();
for (int x=0; x<256; ++x){
cheader[x] = 0;
}
for (int x=0; x<=9; ++x){
for (int y=7; y>=0; --y){
int i = 2*(7-y)+16*x;
cheader[i] = (((1<<(y))&(header[x])) << (7-(y)));
}
}
}
textureHeader->setImage(imageheader.get());
}
// Create the Screen Aligned Quad
osg::Geode* geode = new osg::Geode();
{
osg::Geometry* geom = new osg::Geometry;
osg::Vec3Array* vertices = new osg::Vec3Array;
vertices->push_back(osg::Vec3(0,height,0));
vertices->push_back(osg::Vec3(0,0,0));
vertices->push_back(osg::Vec3(width,0,0));
vertices->push_back(osg::Vec3(width,height,0));
geom->setVertexArray(vertices);
osg::Vec2Array* tex = new osg::Vec2Array;
tex->push_back(osg::Vec2(0,1));
tex->push_back(osg::Vec2(0,0));
tex->push_back(osg::Vec2(1,0));
tex->push_back(osg::Vec2(1,1));
geom->setTexCoordArray(0,tex);
geom->addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
geode->addDrawable(geom);
// new we need to add the textures to the quad, and setting up the shader.
osg::StateSet* stateset = geode->getOrCreateStateSet();
stateset->setTextureAttributeAndModes(0, textureHeader,osg::StateAttribute::ON);
stateset->setTextureAttributeAndModes(1, texture,osg::StateAttribute::ON);
stateset->setTextureAttributeAndModes(2, textureD,osg::StateAttribute::ON);
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
osg::ref_ptr<osg::Program> programShader = new osg::Program();
stateset->setAttribute(programShader.get(), osg::StateAttribute::ON);
stateset->addUniform( new osg::Uniform("wow_width", (int)width));
stateset->addUniform( new osg::Uniform("wow_height", (int)height));
stateset->addUniform( new osg::Uniform("wow_disparity_M", _wow_disparity_M));
stateset->addUniform( new osg::Uniform("wow_disparity_Zd", _wow_disparity_Zd));
stateset->addUniform( new osg::Uniform("wow_disparity_vz", _wow_disparity_vz));
stateset->addUniform( new osg::Uniform("wow_disparity_C", _wow_disparity_C));
stateset->addUniform(new osg::Uniform("wow_header", 0));
stateset->addUniform(new osg::Uniform("wow_tcolor", 1));
stateset->addUniform(new osg::Uniform("wow_tdepth", 2));
osg::Shader *frag = new osg::Shader(osg::Shader::FRAGMENT);
frag->setShaderSource(" "\
" uniform sampler1D wow_header; " \
" uniform sampler2D wow_tcolor; " \
" uniform sampler2D wow_tdepth; " \
" " \
" uniform int wow_width; " \
" uniform int wow_height; " \
" uniform float wow_disparity_M; " \
" uniform float wow_disparity_Zd; " \
" uniform float wow_disparity_vz; " \
" uniform float wow_disparity_C; " \
" " \
" float disparity(float Z) " \
" { " \
" return (wow_disparity_M*(1.0-(wow_disparity_vz/(Z-wow_disparity_Zd+wow_disparity_vz))) " \
" + wow_disparity_C) / 255.0; " \
" } " \
" " \
" void main() " \
" { " \
" vec2 pos = (gl_FragCoord.xy / vec2(wow_width/2,wow_height) ); " \
" if (gl_FragCoord.x > float(wow_width/2)) " \
" { " \
" gl_FragColor = vec4(disparity(( texture2D(wow_tdepth, pos - vec2(1,0))).z)); " \
" } " \
" else{ " \
" gl_FragColor = texture2D(wow_tcolor, pos); " \
" } " \
" if ( (gl_FragCoord.y >= float(wow_height-1)) && (gl_FragCoord.x < 256.0) ) " \
" { " \
" float pos = gl_FragCoord.x/256.0; " \
" float blue = texture1D(wow_header, pos).b; " \
" if ( blue < 0.5) " \
" gl_FragColor.b = 0.0; " \
" else " \
" gl_FragColor.b = 1.0; " \
" } " \
" } " );
programShader->addShader(frag);
}
// Create the Camera
{
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
camera->setClearColor( osg::Vec4(0.0,0.0,0.0,1.0) );
camera->setViewport(new osg::Viewport(0, 0, width, height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
camera->setReferenceFrame(osg::Camera::ABSOLUTE_RF);
camera->setAllowEventFocus(false);
camera->setInheritanceMask(camera->getInheritanceMask() & ~osg::CullSettings::CLEAR_COLOR & ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE);
//camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
camera->setProjectionMatrixAsOrtho2D(0,width,0,height);
camera->setViewMatrix(osg::Matrix::identity());
// add subgraph to render
camera->addChild(geode);
camera->setName("WoWCamera");
view.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd(), false);
}
}
}
/* Public functions */
void OculusViewConfig::configure(osgViewer::View& view) const
{
// Create a graphic context based on our desired traits
osg::ref_ptr<osg::GraphicsContext::Traits> traits = m_device->graphicsContextTraits();
osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits);
if (!gc) {
osg::notify(osg::NOTICE) << "Error, GraphicsWindow has not been created successfully" << std::endl;
return;
}
// Attach to window, needed for direct mode
m_device->attachToWindow(gc);
// Attach a callback to detect swap
osg::ref_ptr<OculusSwapCallback> swapCallback = new OculusSwapCallback(m_device);
gc->setSwapCallback(swapCallback);
osg::ref_ptr<osg::Camera> camera = view.getCamera();
camera->setName("Main");
// Use full view port
camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
// Disable automatic computation of near and far plane on main camera, will propagate to slave cameras
camera->setComputeNearFarMode( osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR );
const int textureWidth = m_device->renderTargetWidth()/2;
const int textureHeight = m_device->renderTargetHeight();
// master projection matrix
camera->setProjectionMatrix(m_device->projectionMatrixCenter());
// Create textures for RTT cameras
osg::ref_ptr<osg::Texture2D> textureLeft = new osg::Texture2D;
textureLeft->setTextureSize( textureWidth, textureHeight );
textureLeft->setInternalFormat( GL_RGBA );
osg::ref_ptr<osg::Texture2D> textureRight = new osg::Texture2D;
textureRight->setTextureSize( textureWidth, textureHeight );
textureRight->setInternalFormat( GL_RGBA );
// Create RTT cameras and attach textures
osg::ref_ptr<osg::Camera> cameraRTTLeft = m_device->createRTTCamera(textureLeft, OculusDevice::LEFT, osg::Camera::RELATIVE_RF, gc);
osg::ref_ptr<osg::Camera> cameraRTTRight = m_device->createRTTCamera(textureRight, OculusDevice::RIGHT, osg::Camera::RELATIVE_RF, gc);
cameraRTTLeft->setName("LeftRTT");
cameraRTTRight->setName("RightRTT");
// Create warp ortho camera
osg::ref_ptr<osg::Camera> cameraWarp = m_device->createWarpOrthoCamera(0.0, 1.0, 0.0, 1.0, gc);
cameraWarp->setName("WarpOrtho");
cameraWarp->setViewport(new osg::Viewport(0, 0, m_device->screenResolutionWidth(), m_device->screenResolutionHeight()));
// Create shader program
osg::ref_ptr<osg::Program> program = m_device->createShaderProgram();
// Create distortionMesh for each camera
osg::ref_ptr<osg::Geode> leftDistortionMesh = m_device->distortionMesh(OculusDevice::LEFT, program, 0, 0, textureWidth, textureHeight);
cameraWarp->addChild(leftDistortionMesh);
osg::ref_ptr<osg::Geode> rightDistortionMesh = m_device->distortionMesh(OculusDevice::RIGHT, program, 0, 0, textureWidth, textureHeight);
cameraWarp->addChild(rightDistortionMesh);
// Add pre draw camera to handle time warp
cameraWarp->setPreDrawCallback(new WarpCameraPreDrawCallback(m_device));
// Attach shaders to each distortion mesh
osg::ref_ptr<osg::StateSet> leftEyeStateSet = leftDistortionMesh->getOrCreateStateSet();
osg::ref_ptr<osg::StateSet> rightEyeStateSet = rightDistortionMesh->getOrCreateStateSet();
m_device->applyShaderParameters(leftEyeStateSet, program.get(), textureLeft.get(), OculusDevice::LEFT);
m_device->applyShaderParameters(rightEyeStateSet, program.get(), textureRight.get(), OculusDevice::RIGHT);
// Add RTT cameras as slaves, specifying offsets for the projection
view.addSlave(cameraRTTLeft,
m_device->projectionOffsetMatrixLeft(),
m_device->viewMatrixLeft(),
true);
view.getSlave(0)._updateSlaveCallback = new OculusUpdateSlaveCallback(OculusUpdateSlaveCallback::LEFT_CAMERA, m_device.get(), swapCallback.get(), m_warning.get());
view.addSlave(cameraRTTRight,
m_device->projectionOffsetMatrixRight(),
m_device->viewMatrixRight(),
true);
view.getSlave(1)._updateSlaveCallback = new OculusUpdateSlaveCallback(OculusUpdateSlaveCallback::RIGHT_CAMERA, m_device.get(), swapCallback.get(), 0);
// Use sky light instead of headlight to avoid light changes when head movements
view.setLightingMode(osg::View::SKY_LIGHT);
// Add warp camera as slave
view.addSlave(cameraWarp, false);
view.setName("Oculus");
// Add Oculus keyboard handler
view.addEventHandler(new OculusEventHandler(m_device));
view.addEventHandler(new OculusWarningEventHandler(m_device, m_warning));
// Start HSW timer
m_device->getHealthAndSafetyDisplayState();
}
void AcrossAllScreens::configure(osgViewer::View& view) const
{
osg::GraphicsContext::WindowingSystemInterface* wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (!wsi)
{
OSG_NOTICE<<"AcrossAllScreens::configure() : Error, no WindowSystemInterface available, cannot create windows."<<std::endl;
return;
}
osg::DisplaySettings* ds = getActiveDisplaySetting(view);
double fovy, aspectRatio, zNear, zFar;
view.getCamera()->getProjectionMatrixAsPerspective(fovy, aspectRatio, zNear, zFar);
osg::GraphicsContext::ScreenIdentifier si;
si.readDISPLAY();
// displayNum has not been set so reset it to 0.
if (si.displayNum<0) si.displayNum = 0;
unsigned int numScreens = wsi->getNumScreens(si);
if (numScreens==1)
{
if (si.screenNum<0) si.screenNum = 0;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
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::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
view.getCamera()->setGraphicsContext(gc.get());
osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(gc.get());
if (gw)
{
OSG_INFO<<" GraphicsWindow has been created successfully."<<std::endl;
gw->getEventQueue()->getCurrentEventState()->setWindowRectangle(0, 0, width, height );
}
else
{
OSG_NOTICE<<" GraphicsWindow has not been created successfully."<<std::endl;
}
double newAspectRatio = double(traits->width) / double(traits->height);
double aspectRatioChange = newAspectRatio / aspectRatio;
if (aspectRatioChange != 1.0)
{
view.getCamera()->getProjectionMatrix() *= osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0);
}
view.getCamera()->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
view.getCamera()->setDrawBuffer(buffer);
view.getCamera()->setReadBuffer(buffer);
}
else
{
double translate_x = 0.0;
for(unsigned int i=0; i<numScreens; ++i)
{
si.screenNum = i;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
translate_x += double(width) / (double(height) * aspectRatio);
}
bool stereoSplitScreens = numScreens==2 &&
ds->getStereoMode()==osg::DisplaySettings::HORIZONTAL_SPLIT &&
ds->getStereo();
for(unsigned int i=0; i<numScreens; ++i)
{
si.screenNum = i;
unsigned int width, height;
wsi->getScreenResolution(si, width, height);
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->screenNum = i;
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());
osg::ref_ptr<osg::Camera> camera = new osg::Camera;
camera->setGraphicsContext(gc.get());
osgViewer::GraphicsWindow* gw = dynamic_cast<osgViewer::GraphicsWindow*>(gc.get());
if (gw)
{
OSG_INFO<<" GraphicsWindow has been created successfully."<<gw<<std::endl;
gw->getEventQueue()->getCurrentEventState()->setWindowRectangle(traits->x, traits->y, traits->width, traits->height );
}
else
{
OSG_NOTICE<<" GraphicsWindow has not been created successfully."<<std::endl;
}
camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
if (stereoSplitScreens)
{
unsigned int leftCameraNum = (ds->getSplitStereoHorizontalEyeMapping()==osg::DisplaySettings::LEFT_EYE_LEFT_VIEWPORT) ? 0 : 1;
osg::ref_ptr<osg::DisplaySettings> ds_local = new osg::DisplaySettings(*ds);
ds_local->setStereoMode(leftCameraNum==i ? osg::DisplaySettings::LEFT_EYE : osg::DisplaySettings::RIGHT_EYE);
camera->setDisplaySettings(ds_local.get());
view.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd() );
}
else
{
double newAspectRatio = double(traits->width) / double(traits->height);
double aspectRatioChange = newAspectRatio / aspectRatio;
view.addSlave(camera.get(), osg::Matrixd::translate( translate_x - aspectRatioChange, 0.0, 0.0) * osg::Matrix::scale(1.0/aspectRatioChange,1.0,1.0), osg::Matrixd() );
translate_x -= aspectRatioChange * 2.0;
}
}
}
view.assignSceneDataToCameras();
}
