qsgpremultiply.h File Reference

#include <QtGlobal>

Include dependency graph for qsgpremultiply.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Namespaces
namespace	OpenSWMM
namespace	OpenSWMM::Render

Functions
quint8	OpenSWMM::Render::premul (quint8 c, quint8 a)

Detailed Description

Author

Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com

Date

2026

License\n GPL-3.0-or-later

Premultiplied-alpha helper shared by the QSG map renderers (terrain mesh, 2D results, 1D network), which all emit vertex colours into QSGVertexColorMaterial.

Qt-Core-only so it can be unit-tested headlessly — see tests/unit/test_qsgpremultiply.cpp.