FGFS-4.1/OpenSceneGraph
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Added code paths for PBuffer RTT support.

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This commit is contained in:
Robert Osfield 2005-10-04 18:50:00 +00:00
parent 8e9ffd09af
commit cf2974329f
3 changed files with 56 additions and 11 deletions
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1
examples/osgprerender/osgprerender.cpp
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@ -285,6 +285,7 @@ int main( int argc, char **argv )
while (arguments.read("--fbo")) { renderImplementation = osg::CameraNode::FRAME_BUFFER_OBJECT; }
while (arguments.read("--pbuffer")) { renderImplementation = osg::CameraNode::PIXEL_BUFFER; }
while (arguments.read("--pbuffer-rtt")) { renderImplementation = osg::CameraNode::PIXEL_BUFFER_RTT; }
while (arguments.read("--fb")) { renderImplementation = osg::CameraNode::FRAME_BUFFER; }
while (arguments.read("--window")) { renderImplementation = osg::CameraNode::SEPERATE_WINDOW; }

1
include/osg/CameraNode
View File

@ -185,6 +185,7 @@ class OSG_EXPORT CameraNode : public Transform, public CullSettings
enum RenderTargetImplementation
{
FRAME_BUFFER_OBJECT,
PIXEL_BUFFER_RTT,
PIXEL_BUFFER,
FRAME_BUFFER,
SEPERATE_WINDOW

65
src/osgUtil/CullVisitor.cpp
View File

@ -1274,24 +1274,28 @@ void CullVisitor::apply(osg::CameraNode& camera)
}
}
}
else if (camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER ||
else if (camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER_RTT ||
camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER ||
camera.getRenderTargetImplementation()==osg::CameraNode::SEPERATE_WINDOW )
{
osg::ref_ptr<osg::GraphicsContext> context = rtts->getGraphicsContext();
if (!context)
{
osg::Texture* pBufferTexture = 0;
// set up the traits of the graphics context that we want
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
traits->_width = viewport->width();
traits->_height = viewport->height();
traits->_pbuffer = (camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER);
traits->_pbuffer = (camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER || camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER_RTT);
traits->_windowDecoration = (camera.getRenderTargetImplementation()==osg::CameraNode::SEPERATE_WINDOW);
traits->_doubleBuffer = (camera.getRenderTargetImplementation()==osg::CameraNode::SEPERATE_WINDOW);
rtts->setDrawBuffer(GL_FRONT);
rtts->setReadBuffer(GL_FRONT);
GLenum bufferFormat = GL_NONE;
bool colorAttached = false;
bool depthAttached = false;
@ -1302,7 +1306,7 @@ void CullVisitor::apply(osg::CameraNode& camera)
{
osg::CameraNode::BufferComponent buffer = itr->first;
// osg::CameraNode::Attachment& attachment = itr->second;
osg::CameraNode::Attachment& attachment = itr->second;
switch(buffer)
{
case(osg::CameraNode::DEPTH_BUFFER):
@ -1317,13 +1321,46 @@ void CullVisitor::apply(osg::CameraNode& camera)
stencilAttached = true;
break;
}
case(osg::CameraNode::COLOR_BUFFER):
{
if (attachment._internalFormat!=GL_NONE)
{
bufferFormat = attachment._internalFormat;
}
else
{
if (attachment._texture.valid())
{
pBufferTexture = attachment._texture.get();
bufferFormat = attachment._texture->getInternalFormat();
}
else if (attachment._image.valid())
{
bufferFormat = attachment._image->getInternalTextureFormat();
}
else
{
bufferFormat = GL_RGBA;
}
}
if (camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER_RTT)
{
traits->_target = bufferFormat;
traits->_level = attachment._level;
traits->_face = attachment._face;
traits->_mipMapGeneration = attachment._mipMapGeneration;
}
break;
}
default:
{
traits->_red = 8;
traits->_green = 8;
traits->_blue = 8;
traits->_alpha = 0; // ??? need to look at attachment, just do quick and dirty right now.
colorAttached = true;
if (camera.getRenderTargetImplementation()==osg::CameraNode::SEPERATE_WINDOW)
osg::notify(osg::NOTICE)<<"Warning: Window ";
else
osg::notify(osg::NOTICE)<<"Warning: Pbuffer ";
osg::notify(osg::NOTICE)<<"does not support multiple color outputs."<<std::endl;
break;
}
@ -1337,10 +1374,12 @@ void CullVisitor::apply(osg::CameraNode& camera)
if (!colorAttached)
{
if (bufferFormat == GL_NONE) bufferFormat = GL_RGB;
traits->_red = 8;
traits->_green = 8;
traits->_blue = 8;
traits->_alpha = 0; // ???
traits->_alpha = (bufferFormat==GL_RGBA) ? 8 : 0;
}
// share OpenGL objects if possible...
@ -1358,7 +1397,11 @@ void CullVisitor::apply(osg::CameraNode& camera)
}
rtts->setGraphicsContext(context.get());
if (pBufferTexture && camera.getRenderTargetImplementation()==osg::CameraNode::PIXEL_BUFFER_RTT)
{
pBufferTexture->setReadPBuffer(context.get());
}
#if 0
context->createGraphicsThread();
#else