coverage_weight()

constexpr float MayaFlux::Portal::Text::coverage_weight ( uint32_t  slot )

constexprnoexcept

MeshVertex::weight that makes a fragment shader read a texture slot as glyph coverage rather than as an image.

Positive weights select a slot as an image, zero is a flat colour, and a negative weight selects slot -weight - 1 as coverage: the shader outputs the vertex colour with the slot's red channel as alpha (see data/shaders/include/glyph_coverage.glsl).

Parameters

slot	Zero based index of the atlas image in the shader's texture array.

Definition at line 50 of file GlyphMesh.hpp.

{
    return -static_cast<float>(slot + 1);
}

Referenced by glyph_vertices().

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