FGFS-4.1/OpenSceneGraph
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Added handling the ShadowSettings::LightNum for selecting which light to use.

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This commit is contained in:
Robert Osfield 2011-09-07 20:05:25 +00:00
parent b2fd8f4059
commit 83524f958e
3 changed files with 14 additions and 3 deletions
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9
include/osgShadow/ShadowSettings
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@ -28,8 +28,11 @@ class OSGSHADOW_EXPORT ShadowSettings : public osg::Object
META_Object(osgShadow, ShadowSettings);
void setLightNum(unsigned int lightNum) { _lightNum = lightNum; }
unsigned int getLightNum() const { return _lightNum; }
/** Set the LightNum of the light in the scene to assign a shadow for.
* Default value is -1, which signifies that shadow technique should automatically select an active light
* to assign a shadow, typically this will be the first active light found. */
void setLightNum(int lightNum) { _lightNum = lightNum; }
int getLightNum() const { return _lightNum; }
void setBaseShadowTextureUnit(unsigned int unit) { _baseShadowTextureUnit = unit; }
unsigned int getBaseShadowTextureUnit() const { return _baseShadowTextureUnit; }
@ -79,7 +82,7 @@ class OSGSHADOW_EXPORT ShadowSettings : public osg::Object
virtual ~ShadowSettings();
unsigned int _lightNum;
int _lightNum;
unsigned int _baseShadowTextureUnit;
osg::Vec2s _textureSize;

2
src/osgShadow/ShadowSettings.cpp
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@ -16,6 +16,7 @@
using namespace osgShadow;
ShadowSettings::ShadowSettings():
_lightNum(-1),
_baseShadowTextureUnit(1),
_textureSize(2048,2048),
_minimumShadowMapNearFarRatio(0.01),
@ -29,6 +30,7 @@ ShadowSettings::ShadowSettings():
ShadowSettings::ShadowSettings(const ShadowSettings& ss, const osg::CopyOp& copyop):
Object(ss,copyop),
_lightNum(ss._lightNum),
_baseShadowTextureUnit(ss._baseShadowTextureUnit),
_textureSize(ss._textureSize),
_minimumShadowMapNearFarRatio(ss._minimumShadowMapNearFarRatio),

6
src/osgShadow/ViewDependentShadowMap.cpp
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@ -790,6 +790,9 @@ bool ViewDependentShadowMap::selectActiveLights(osgUtil::CullVisitor* cv, ViewDe
osgUtil::PositionalStateContainer::AttrMatrixList& aml =
rs->getPositionalStateContainer()->getAttrMatrixList();
const ShadowSettings* settings = getShadowedScene()->getShadowSettings();
for(osgUtil::PositionalStateContainer::AttrMatrixList::reverse_iterator itr = aml.rbegin();
itr != aml.rend();
++itr)
@ -797,6 +800,9 @@ bool ViewDependentShadowMap::selectActiveLights(osgUtil::CullVisitor* cv, ViewDe
const osg::Light* light = dynamic_cast<const osg::Light*>(itr->first.get());
if (light)
{
// is LightNum matched to that defined in settings
if (settings && settings->getLightNum()>=0 && light->getLightNum()!=settings->getLightNum()) break;
LightDataList::iterator pll_itr = pll.begin();
for(; pll_itr != pll.end(); ++pll_itr)
{