FGFS-4.1/OpenSceneGraph
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Restructured the handling of TileData to make it more extensible and flexible.

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This commit is contained in:
Robert Osfield
2014-03-19 17:56:40 +00:00
parent d7944b6ca9
commit 2f8b0f7a70
5 changed files with 157 additions and 90 deletions
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22
include/osgVolume/MultipassTechnique
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@@ -19,6 +19,24 @@
namespace osgVolume {
/** Container for render to texture objects used when doing multi-pass volume rendering techniques.*/
struct OSGVOLUME_EXPORT MultipassTileData : public TileData
{
MultipassTileData(osgUtil::CullVisitor* cv);
virtual void update(osgUtil::CullVisitor* cv);
osg::ref_ptr<osg::Texture2D> frontFaceDepthTexture;
osg::ref_ptr<osg::Camera> frontFaceRttCamera;
osg::ref_ptr<osg::Texture2D> backFaceDepthTexture;
osg::ref_ptr<osg::Camera> backFaceRttCamera;
osg::ref_ptr<osg::Uniform> texgenUniform;
};
class OSGVOLUME_EXPORT MultipassTechnique : public VolumeTechnique
{
public:
@@ -43,6 +61,10 @@ class OSGVOLUME_EXPORT MultipassTechnique : public VolumeTechnique
/** Traverse the terrain subgraph.*/
virtual void traverse(osg::NodeVisitor& nv);
/** Called from VolumeScene to create the TileData container when a multi-pass technique is being used.
* The TileData container caches any render to texture objects that are required. */
virtual TileData* createTileData(osgUtil::CullVisitor* cv) { return new MultipassTileData(cv); }
protected:
virtual ~MultipassTechnique();

20
include/osgVolume/VolumeScene
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@@ -36,24 +36,8 @@ class OSGVOLUME_EXPORT VolumeScene : public osg::Group
virtual void traverse(osg::NodeVisitor& nv);
struct TileData : public osg::Referenced
{
TileData() : active(false) {}
bool active;
osg::NodePath nodePath;
osg::ref_ptr<osg::RefMatrix> projectionMatrix;
osg::ref_ptr<osg::RefMatrix> modelviewMatrix;
osg::ref_ptr<osg::Texture2D> depthTexture;
osg::ref_ptr<osg::Camera> rttCamera;
osg::ref_ptr<osg::StateSet> stateset;
osg::ref_ptr<osg::Uniform> texgenUniform;
};
TileData* tileVisited(osgUtil::CullVisitor* cv, osgVolume::VolumeTile* tile);
TileData* getTileData(osgUtil::CullVisitor* cv, osgVolume::VolumeTile* tile);
TileData* tileVisited(osgUtil::CullVisitor* cv, VolumeTile* tile);
TileData* getTileData(osgUtil::CullVisitor* cv, VolumeTile* tile);
protected:

21
include/osgVolume/VolumeTechnique
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@@ -25,6 +25,23 @@ namespace osgVolume {
class VolumeTile;
/** Container for render to texture objects used when doing multi-pass volume rendering techniques.*/
struct TileData : public osg::Referenced
{
TileData() : active(false) {}
virtual void update(osgUtil::CullVisitor* cv) = 0;
bool active;
osg::NodePath nodePath;
osg::ref_ptr<osg::RefMatrix> projectionMatrix;
osg::ref_ptr<osg::RefMatrix> modelviewMatrix;
osg::ref_ptr<osg::StateSet> stateset;
};
class OSGVOLUME_EXPORT VolumeTechnique : public osg::Object
{
public:
@@ -53,6 +70,10 @@ class OSGVOLUME_EXPORT VolumeTechnique : public osg::Object
/** Traverse the terrain subgraph.*/
virtual void traverse(osg::NodeVisitor& nv);
/** Called from VolumeScene to create the TileData container when a multi-pass technique is being used.
* The TileData container caches any render to texture objects that are required. */
virtual TileData* createTileData(osgUtil::CullVisitor* cv) { return 0; }
protected:
void setDirty(bool dirty);