irrlicht/include/IShadowVolumeSceneNode.h
cutealien 2ae2a551a6 Merging r5975 through r6036 from trunk to ogl-es branch.
GLES drivers adapted, but only did make compile-tests.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475
2020-01-03 19:05:16 +00:00

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2.1 KiB
C++

// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef __I_SHADOW_VOLUME_SCENE_NODE_H_INCLUDED__
#define __I_SHADOW_VOLUME_SCENE_NODE_H_INCLUDED__
#include "ISceneNode.h"
namespace irr
{
namespace scene
{
class IMesh;
enum ESHADOWVOLUME_OPTIMIZATION
{
//! Create volumes around every triangle
ESV_NONE,
//! Create volumes only around the silhouette of the mesh
/** This can reduce the number of volumes drastically,
but will have an upfront-cost where it calculates adjacency of
triangles. Also it will not work with all models. Basically
if you see strange black shadow lines then you have a model
for which it won't work.
We get that information about adjacency by comparing the positions of
all edges in the mesh (even if they are in different meshbuffers). */
ESV_SILHOUETTE_BY_POS
};
//! Scene node for rendering a shadow volume into a stencil buffer.
class IShadowVolumeSceneNode : public ISceneNode
{
public:
//! constructor
IShadowVolumeSceneNode(ISceneNode* parent, ISceneManager* mgr, s32 id)
: ISceneNode(parent, mgr, id) {}
//! Sets the mesh from which the shadow volume should be generated.
/** To optimize shadow rendering, use a simpler mesh for shadows.
*/
virtual void setShadowMesh(const IMesh* mesh) = 0;
//! Updates the shadow volumes for current light positions.
virtual void updateShadowVolumes() = 0;
//! Set optimization used to create shadow volumes
/** Default is ESV_SILHOUETTE_BY_POS. If the shadow
looks bad then give ESV_NONE a try (which will be slower).
Alternatively you can try to fix the model, it's often
because it's not closed (aka if you'd put water in it then
that would leak out). */
virtual void setOptimization(ESHADOWVOLUME_OPTIMIZATION optimization) = 0;
//! Get currently active optimization used to create shadow volumes
virtual ESHADOWVOLUME_OPTIMIZATION getOptimization() const = 0;
};
} // end namespace scene
} // end namespace irr
#endif