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From Laurens Voerman,"ttached is a updated version for

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examples\osgautocapture\osgautocapture.cpp

-fixed a bug with --active command line option not rendering
-added --pbuffer command line option
-changed very confusing #ifdef 0
-added OSG_GLES GL_RGB readPixels support if available (UNTESTED)"
This commit is contained in:
Robert Osfield
2010-01-26 11:37:24 +00:00
parent a08241d481
commit 5e9aedc8e1
1 changed files with 64 additions and 7 deletions
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71
examples/osgautocapture/osgautocapture.cpp
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@@ -79,7 +79,7 @@ public:
virtual void operator () (osg::RenderInfo& renderInfo) const
{
#if !defined(OSG_GLES1_AVAILABLE) && !!defined(OSG_GLES1_AVAILABLE)
#if !defined(OSG_GLES1_AVAILABLE) && !defined(OSG_GLES2_AVAILABLE)
glReadBuffer(_readBuffer);
#else
osg::notify(osg::NOTICE)<<"Error: GLES unable to do glReadBuffer"<<std::endl;
@@ -95,7 +95,12 @@ public:
pixelFormat = GL_RGBA;
else
pixelFormat = GL_RGB;
#if defined(OSG_GLES1_AVAILABLE) || defined(OSG_GLES2_AVAILABLE)
if (pixelFormat = GL_RGB))
if ( glGetIntegerv(IMPLEMENTATION_COLOR_READ_FORMAT_OES) != GL_RGB ||
glGetIntegerv(IMPLEMENTATION_COLOR_READ_FORMAT_OES) != GL_UNSIGNED_BYTE )
pixelFormat = GL_RGBA;//always supported
#endif
int width = gc->getTraits()->width;
int height = gc->getTraits()->height;
@@ -178,6 +183,7 @@ int main( int argc, char **argv )
usage->addCommandLineOption("--filename", "Filename for the captured image", "autocapture.jpg");
usage->addCommandLineOption("--db-threads", "Number of DatabasePager threads to use", "2");
usage->addCommandLineOption("--active", "Use active rendering instead of passive / lazy rendering");
usage->addCommandLineOption("--pbuffer", "Render into a pbuffer, not into a window");
// Construct the viewer and register options arguments.
osgViewer::Viewer viewer(arguments);
@@ -188,7 +194,7 @@ int main( int argc, char **argv )
return 1;
}
// Get user specified number of DatabaseThreads
// Get user specified number of DatabaseThreads
int dbThreads = 2;
arguments.read("--db-threads", dbThreads);
if (dbThreads < 1) dbThreads = 1;
@@ -204,6 +210,56 @@ int main( int argc, char **argv )
if (arguments.read("--active"))
activeMode = true;
bool use_pbuffer = false;
if (arguments.read("--pbuffer")) {
if (!activeMode) {
use_pbuffer = true;
} else {
osg::notify(osg::NOTICE)<<"ignoring --pbuffer because --active specified on commandline"<<std::endl;
}
}
if (use_pbuffer) {
osg::DisplaySettings* ds = osg::DisplaySettings::instance();
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits(ds);
if (viewer.getCamera()->getGraphicsContext() && viewer.getCamera()->getGraphicsContext()->getTraits()) {
//use viewer settings for window size
osg::ref_ptr<const osg::GraphicsContext::Traits> src_traits = viewer.getCamera()->getGraphicsContext()->getTraits();
traits->screenNum = src_traits->screenNum;
traits->displayNum = src_traits->displayNum;
traits->hostName = src_traits->hostName;
traits->width = src_traits->width;
traits->height = src_traits->height;
traits->red = src_traits->red;
traits->green = src_traits->green;
traits->blue = src_traits->blue;
traits->alpha = src_traits->alpha;
traits->depth = src_traits->depth;
traits->pbuffer = true;
} else {
//viewer would use fullscreen size (unknown here) pbuffer will use 4096 x4096 (or best avaiable)
traits->width = 1 << 12;
traits->height = 1 << 12;
traits->pbuffer = true;
}
osg::ref_ptr<osg::GraphicsContext> pbuffer = osg::GraphicsContext::createGraphicsContext(traits.get());
if (pbuffer.valid())
{
osg::notify(osg::NOTICE)<<"Pixel buffer has been created successfully."<<std::endl;
osg::ref_ptr<osg::Camera> camera = new osg::Camera(*viewer.getCamera());
camera->setGraphicsContext(pbuffer.get());
camera->setViewport(new osg::Viewport(0,0,traits->width,traits->height));
GLenum buffer = pbuffer->getTraits()->doubleBuffer ? GL_BACK : GL_FRONT;
camera->setDrawBuffer(buffer);
camera->setReadBuffer(buffer);
viewer.setCamera(camera);
}
else
{
osg::notify(osg::NOTICE)<<"Pixel buffer has not been created successfully."<<std::endl;
}
}
// Read camera settings for screenshot
double lat=50;
double lon=10;
@@ -323,15 +379,16 @@ int main( int argc, char **argv )
osg::Timer_t afterLoadTick = osg::Timer::instance()->tick();
std::cout<<"Load and Compile time = "<<osg::Timer::instance()->delta_s(beforeLoadTick, afterLoadTick)<<" seconds"<<std::endl;
// Do cull and draw to render the scene correctly
customRenderer->setCullOnly(false);
//--- Capture the image!!! ---
if (!activeMode)
{
// Do cull and draw to render the scene correctly
customRenderer->setCullOnly(false);
// Add the WindowCaptureCallback now that we have full resolution
viewer.getCamera()->setFinalDrawCallback(new WindowCaptureCallback(GL_BACK, fileName));
GLenum buffer = viewer.getCamera()->getGraphicsContext()->getTraits()->doubleBuffer ? GL_BACK : GL_FRONT;
viewer.getCamera()->setFinalDrawCallback(new WindowCaptureCallback(buffer, fileName));
osg::Timer_t beforeRenderTick = osg::Timer::instance()->tick();