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Use additive alpha blending on the character preview

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This commit is contained in:
scrawl 2017-02-21 18:29:18 +01:00
parent e38221edc9
commit 0fbd29ccb8
2 changed files with 42 additions and 0 deletions
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41
apps/openmw/mwrender/characterpreview.cpp
View file

@ -3,6 +3,7 @@
#include <iostream>
#include <osg/Fog>
#include <osg/BlendFunc>
#include <osg/Texture2D>
#include <osg/Camera>
#include <osg/PositionAttitudeTransform>
@ -74,6 +75,35 @@ namespace MWRender
unsigned int mLastRenderedFrame;
};
// Set up alpha blending to Additive mode to avoid issues caused by transparent objects writing onto the alpha value of the FBO
class SetUpBlendVisitor : public osg::NodeVisitor
{
public:
SetUpBlendVisitor(): osg::NodeVisitor(TRAVERSE_ALL_CHILDREN)
{
}
virtual void apply(osg::Node& node)
{
if (osg::StateSet* stateset = node.getStateSet())
{
if (stateset->getAttribute(osg::StateAttribute::BLENDFUNC) || stateset->getBinNumber() == osg::StateSet::TRANSPARENT_BIN)
{
osg::ref_ptr<osg::StateSet> newStateSet = new osg::StateSet(*stateset, osg::CopyOp::SHALLOW_COPY);
osg::BlendFunc* blendFunc = static_cast<osg::BlendFunc*>(stateset->getAttribute(osg::StateAttribute::BLENDFUNC));
osg::ref_ptr<osg::BlendFunc> newBlendFunc = blendFunc ? new osg::BlendFunc(*blendFunc) : new osg::BlendFunc;
newBlendFunc->setDestinationAlpha(osg::BlendFunc::ONE);
newBlendFunc->setDestinationRGB(osg::BlendFunc::ONE);
newStateSet->setAttribute(newBlendFunc, osg::StateAttribute::ON);
node.setStateSet(newStateSet);
}
}
traverse(node);
}
};
CharacterPreview::CharacterPreview(osg::Group* parent, Resource::ResourceSystem* resourceSystem,
MWWorld::Ptr character, int sizeX, int sizeY, const osg::Vec3f& position, const osg::Vec3f& lookAt)
: mParent(parent)
@ -170,8 +200,15 @@ namespace MWRender
return mSizeY;
}
void CharacterPreview::setBlendMode()
{
SetUpBlendVisitor visitor;
mNode->accept(visitor);
}
void CharacterPreview::onSetup()
{
setBlendMode();
}
osg::ref_ptr<osg::Texture2D> CharacterPreview::getTexture()
@ -280,6 +317,8 @@ namespace MWRender
mAnimation->runAnimation(0.0f);
setBlendMode();
redraw();
}
@ -319,6 +358,7 @@ namespace MWRender
void InventoryPreview::onSetup()
{
CharacterPreview::onSetup();
osg::Vec3f scale (1.f, 1.f, 1.f);
mCharacter.getClass().adjustScale(mCharacter, scale, true);
@ -392,6 +432,7 @@ namespace MWRender
void RaceSelectionPreview::onSetup ()
{
CharacterPreview::onSetup();
mAnimation->play("idle", 1, Animation::BlendMask_All, false, 1.0f, "start", "stop", 0.0f, 0);
mAnimation->runAnimation(0.f);

1
apps/openmw/mwrender/characterpreview.hpp
View file

@ -47,6 +47,7 @@ namespace MWRender
protected:
virtual bool renderHeadOnly() { return false; }
void setBlendMode();
virtual void onSetup();
osg::ref_ptr<osg::Group> mParent;