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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15
src/osgText/Font.cpp
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@@ -302,10 +302,16 @@ Font::Font(FontImplementation* implementation):
_margin(1),
_marginRatio(0.02),
_glyphInterval(1),
#if 0
_glyphTextureFeatures(GlyphTexture::ALL_FEATURES),
#else
_glyphTextureFeatures(GlyphTexture::GREYSCALE),
#endif
_textureWidthHint(1024),
_textureHeightHint(1024),
_minFilterHint(osg::Texture::LINEAR_MIPMAP_LINEAR),
_magFilterHint(osg::Texture::LINEAR),
_maxAnisotropy(16),
_depth(1),
_numCurveSamples(10)
{
@@ -411,6 +417,12 @@ float Font::getGlyphImageMarginRatio() const
return _marginRatio;
}
void Font::setGlyphInterval(int interval)
{
_glyphInterval = interval;
}
void Font::setTextureSizeHint(unsigned int width,unsigned int height)
{
_textureWidthHint = width;
@@ -606,10 +618,11 @@ void Font::addGlyph(const FontResolution& fontRes, unsigned int charcode, Glyph*
glyphTexture->setGlyphImageMargin(_margin);
glyphTexture->setGlyphImageMarginRatio(_marginRatio);
glyphTexture->setGlyphInterval(_glyphInterval);
glyphTexture->setGlyphTextureFeatures(_glyphTextureFeatures);
glyphTexture->setTextureSize(_textureWidthHint,_textureHeightHint);
glyphTexture->setFilter(osg::Texture::MIN_FILTER,_minFilterHint);
glyphTexture->setFilter(osg::Texture::MAG_FILTER,_magFilterHint);
glyphTexture->setMaxAnisotropy(8);
glyphTexture->setMaxAnisotropy(_maxAnisotropy);
_glyphTextureList.push_back(glyphTexture);