FGFS-4.1/OpenSceneGraph
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Add support for generating outline and signed distance field channels in a RGBA packed GlyphTexture Image.

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This commit is contained in:
Robert Osfield
2017-09-08 16:59:43 +01:00
parent 77d4705182
commit de47eb3666
5 changed files with 292 additions and 64 deletions
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6
src/osgText/Text.cpp
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@@ -494,8 +494,10 @@ void Text::computeGlyphRepresentation()
osg::Vec2 maxtc = glyph->getMaxTexCoord();
osg::Vec2 vDiff = maxtc - mintc;
float fHorizTCMargin = 1.0f / glyph->getTexture()->getTextureWidth();
float fVertTCMargin = 1.0f / glyph->getTexture()->getTextureHeight();
float texelMargin = 4.0f;
float fHorizTCMargin = texelMargin / glyph->getTexture()->getTextureWidth();
float fVertTCMargin = texelMargin / glyph->getTexture()->getTextureHeight();
float fHorizQuadMargin = vDiff.x() == 0.0f ? 0.0f : width * fHorizTCMargin / vDiff.x();
float fVertQuadMargin = vDiff.y() == 0.0f ? 0.0f : height * fVertTCMargin / vDiff.y();