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Use diffuse alpha to fade Sun

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This commit is contained in:
slothlife 2015-08-05 21:03:21 -05:00
parent ea2f88a355
commit f2e51b0579
1 changed files with 14 additions and 25 deletions
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39
apps/openmw/mwrender/sky.cpp
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@ -321,12 +321,12 @@ private:
int mMeshType;
};
// A base class for the sun and moons. Must be stored in an osg::ref_ptr due to being
// derived from osg::Referenced.
/// A base class for the sun and moons.
/// \note Must be stored in an osg::ref_ptr due to being derived from osg::Referenced.
class CelestialBody : public SceneUtil::StateSetUpdater
{
public:
CelestialBody(osg::Group* parentNode, float scaleFactor = 1.f, int numUvSets=1)
CelestialBody(osg::Group* parentNode, float scaleFactor, int numUvSets)
{
mGeode = new osg::Geode;
osg::ref_ptr<osg::Geometry> geom = createTexturedQuad(numUvSets);
@ -365,35 +365,26 @@ class Sun : public CelestialBody
public:
Sun(osg::Group* parentNode, Resource::TextureManager& textureManager)
: CelestialBody(parentNode, 1.0f, 1)
, mColor(1.0f, 1.0f, 1.0f, 1.0f)
, mDummyTexture(textureManager.getWarningTexture())
, mTextureManager(textureManager)
, mColor(0.0f, 0.0f, 0.0f, 1.0f)
{
osg::ref_ptr<osg::Texture2D> tex = textureManager.getTexture2D("textures/tx_sun_05.dds",
osg::Texture::CLAMP,
osg::Texture::CLAMP);
mTransform->getOrCreateStateSet()->setTextureAttributeAndModes(0, tex, osg::StateAttribute::ON);
mTransform->getOrCreateStateSet()->setAttributeAndModes(createUnlitMaterial(), osg::StateAttribute::ON);
}
virtual void setDefaults(osg::StateSet* stateset)
{
osg::ref_ptr<osg::TexEnvCombine> texEnv(new osg::TexEnvCombine);
texEnv->setCombine_Alpha(osg::TexEnvCombine::MODULATE);
texEnv->setSource0_Alpha(osg::TexEnvCombine::PREVIOUS);
texEnv->setSource1_Alpha(osg::TexEnvCombine::CONSTANT);
texEnv->setCombine_RGB(osg::TexEnvCombine::REPLACE);
texEnv->setSource0_RGB(osg::TexEnvCombine::PREVIOUS);
texEnv->setConstantColor(osg::Vec4f(1.0f, 1.0f, 1.0f, 1.0f));
osg::ref_ptr<osg::Texture2D> tex = mTextureManager.getTexture2D("textures/tx_sun_05.dds",
osg::Texture::CLAMP,
osg::Texture::CLAMP);
stateset->setTextureAttributeAndModes(1, mDummyTexture, osg::StateAttribute::ON|osg::StateAttribute::OVERRIDE);
stateset->setTextureAttributeAndModes(1, texEnv, osg::StateAttribute::ON|osg::StateAttribute::OVERRIDE);
stateset->setTextureAttributeAndModes(0, tex, osg::StateAttribute::ON);
stateset->setAttributeAndModes(createAlphaTrackingUnlitMaterial(),
osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE);
}
virtual void apply(osg::StateSet* stateset, osg::NodeVisitor*)
{
osg::TexEnvCombine* texEnv = static_cast<osg::TexEnvCombine*>(stateset->getTextureAttribute(1, osg::StateAttribute::TEXENV));
texEnv->setConstantColor(mColor);
osg::Material* mat = static_cast<osg::Material*>(stateset->getAttribute(osg::StateAttribute::MATERIAL));
mat->setDiffuse(osg::Material::FRONT_AND_BACK, mColor);
}
virtual void adjustTransparency(const float ratio)
@ -412,9 +403,8 @@ public:
}
private:
Resource::TextureManager& mTextureManager;
osg::Vec4f mColor;
osg::ref_ptr<osg::Texture2D> mDummyTexture;
};
class Moon : public CelestialBody
@ -522,7 +512,6 @@ public:
}
private:
Resource::TextureManager& mTextureManager;
Type mType;
MoonState::Phase mPhase;