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Fixed spotlight colour mixing

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This commit is contained in:
Robert Osfield 2018-03-24 10:59:15 +00:00
parent 097d3ab4ed
commit 88b7526a83
1 changed files with 1 additions and 1 deletions
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examples/osgspotlight/osgspotlight.cpp
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@ -56,7 +56,7 @@ osg::Image* createSpotLightImage(const osg::Vec4& centerColour, const osg::Vec4&
float dy = (float(r) - mid)*div; float dy = (float(r) - mid)*div;
float pr = powf(1.0f-sqrtf(dx*dx+dy*dy),power); float pr = powf(1.0f-sqrtf(dx*dx+dy*dy),power);
if (pr<0.0f) pr=0.0f; if (pr<0.0f) pr=0.0f;
osg::Vec4 color = centerColour*r+backgroudColour*(1.0f-pr); osg::Vec4 color = centerColour*pr+backgroudColour*(1.0f-pr);
*ptr++ = (unsigned char)((color[0])*255.0f); *ptr++ = (unsigned char)((color[0])*255.0f);
*ptr++ = (unsigned char)((color[1])*255.0f); *ptr++ = (unsigned char)((color[1])*255.0f);
*ptr++ = (unsigned char)((color[2])*255.0f); *ptr++ = (unsigned char)((color[2])*255.0f);