35959b547c
If we assume the tangents and bitangents were generated using mikktspace, we should use the unnormalized vectors, as indicated at mikktspace.com or in http://www.metalliandy.com/mikktspace/downloads/mikktspace/mikktspace.h (see last comment at the end of the file).
14 lines
819 B
GLSL
14 lines
819 B
GLSL
// These variables should be in a struct but some GPU drivers ignore the
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// precision qualifier on individual struct members
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highp mat3 shading_tangentToWorld; // TBN matrix
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highp vec3 shading_position; // position of the fragment in world space
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vec3 shading_view; // normalized vector from the fragment to the eye
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vec3 shading_normal; // normalized transformed normal, in world space
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vec3 shading_geometricNormal; // normalized geometric normal, in world space
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vec3 shading_reflected; // reflection of view about normal
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float shading_NoV; // dot(normal, view), always strictly >= MIN_N_DOT_V
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#if defined(MATERIAL_HAS_CLEAR_COAT)
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vec3 shading_clearCoatNormal; // normalized clear coat layer normal, in world space
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#endif
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