FGFS-4.1/OpenSceneGraph
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Added Camera::g/setIntialDrawCallback and g/setFinalDrawCallback(), and added

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screen snapshot example code to osghud.
This commit is contained in:
Robert Osfield
2008-02-29 15:25:57 +00:00
parent ca513efc1d
commit aa43b3c8a6
9 changed files with 247 additions and 21 deletions
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33
src/osgUtil/RenderStage.cpp
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@@ -826,8 +826,17 @@ void RenderStage::draw(osg::RenderInfo& renderInfo,RenderLeaf*& previous)
{
if (_stageDrawnThisFrame) return;
// push the stages camera so that drawing code can query it
if (_camera) renderInfo.pushCamera(_camera);
_stageDrawnThisFrame = true;
if (_camera && _camera->getInitialDrawCallback())
{
// if we have a camera with a intial draw callback invoke it.
(*(_camera->getInitialDrawCallback()))(renderInfo);
}
// note, SceneView does call to drawPreRenderStages explicitly
// so there is no need to call it here.
drawPreRenderStages(renderInfo,previous);
@@ -880,8 +889,8 @@ void RenderStage::draw(osg::RenderInfo& renderInfo,RenderLeaf*& previous)
if (_camera && _camera->getPreDrawCallback())
{
// if we have a camera with a post draw callback invoke it.
(*(_camera->getPreDrawCallback()))(*_camera);
// if we have a camera with a pre draw callback invoke it.
(*(_camera->getPreDrawCallback()))(renderInfo);
}
bool doCopyTexture = _texture.valid() ?
@@ -942,7 +951,7 @@ void RenderStage::draw(osg::RenderInfo& renderInfo,RenderLeaf*& previous)
if (_camera && _camera->getPostDrawCallback())
{
// if we have a camera with a post draw callback invoke it.
(*(_camera->getPostDrawCallback()))(*_camera);
(*(_camera->getPostDrawCallback()))(renderInfo);
}
if (_graphicsContext.valid() && _graphicsContext != callingContext)
@@ -974,9 +983,17 @@ void RenderStage::draw(osg::RenderInfo& renderInfo,RenderLeaf*& previous)
callingContext->makeCurrent();
}
// place the post draw here temprorarily while we figure out how
// best to do SceneView.
// render all the post draw callbacks
drawPostRenderStages(renderInfo,previous);
if (_camera && _camera->getFinalDrawCallback())
{
// if we have a camera with a final callback invoke it.
(*(_camera->getFinalDrawCallback()))(renderInfo);
}
// pop the render stages camera.
if (_camera) renderInfo.popCamera();
}
void RenderStage::drawImplementation(osg::RenderInfo& renderInfo,RenderLeaf*& previous)
@@ -989,9 +1006,6 @@ void RenderStage::drawImplementation(osg::RenderInfo& renderInfo,RenderLeaf*& pr
return;
}
// push the stages camera so that drawing code can query it
if (_camera) renderInfo.pushCamera(_camera);
// set up the back buffer.
state.applyAttribute(_viewport.get());
@@ -1052,9 +1066,6 @@ void RenderStage::drawImplementation(osg::RenderInfo& renderInfo,RenderLeaf*& pr
state.apply();
// pop the render stages camera.
if (_camera) renderInfo.popCamera();
}
void RenderStage::drawPostRenderStages(osg::RenderInfo& renderInfo,RenderLeaf*& previous)