Function edgeBetweenTexels

MyGUIEngine/src/msdfgen/core/MSDFErrorCorrection.cpp:171–177

Returns a bit mask of which channels contribute to an edge between the two texels a, b.

/// Returns a bit mask of which channels contribute to an edge between the two texels a, b.
static int edgeBetweenTexels(const float *a, const float *b) {
    return (
        RED*edgeBetweenTexelsChannel(a, b, 0)+
        GREEN*edgeBetweenTexelsChannel(a, b, 1)+
        BLUE*edgeBetweenTexelsChannel(a, b, 2)
    );
}

/// Marks texel as protected if one of its non-median channels is present in the channel mask.
static void protectExtremeChannels(byte *stencil, const float *msd, float m, int mask) {