FGFS-4.1/OpenSceneGraph
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Added computation of occluders volume scaled relative to the frustum volume,

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all volumes computed in eye coords.
This commit is contained in:
Robert Osfield
2002-06-15 12:14:42 +00:00
parent 25b420ac0e
commit 52c36dde70
10 changed files with 110 additions and 54 deletions
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18
include/osg/CullStack
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@@ -28,11 +28,15 @@ class SG_EXPORT CullStack
enum CullingModeValues
{
NO_CULLING = 0x00,
NO_CULLING = 0x0,
VIEW_FRUSTUM_CULLING = 0x1,
SMALL_FEATURE_CULLING = 0x2,
SHADOW_OCCLUSION_CULLING = 0x4,
ENABLE_ALL_CULLING = 0xffffffff
NEAR_PLANE_CULLING = 0x2,
FAR_PLANE_CULLING = 0x4,
SMALL_FEATURE_CULLING = 0x8,
SHADOW_OCCLUSION_CULLING = 0x10,
ENABLE_ALL_CULLING = VIEW_FRUSTUM_CULLING|
SMALL_FEATURE_CULLING|
SHADOW_OCCLUSION_CULLING
};
typedef unsigned int CullingMode;
@@ -58,6 +62,9 @@ class SG_EXPORT CullStack
void pushModelViewMatrix(osg::Matrix* matrix);
void popModelViewMatrix();
inline float getFrustumVolume() { if (_frustumVolume<0.0f) computeFrustumVolume(); return _frustumVolume; }
void setLODBias(const float bias) { _LODBias = bias; }
const float getLODBias() const { return _LODBias; }
@@ -174,6 +181,9 @@ class SG_EXPORT CullStack
CullingStack _projectionCullingStack;
CullingStack _modelviewCullingStack;
void computeFrustumVolume();
float _frustumVolume;
unsigned int _bbCornerNear;
unsigned int _bbCornerFar;