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28 lines
741 B
Text
28 lines
741 B
Text
#version 300 es
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// A very cut down variant of Unity's directional lightmap;
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// has an inline medium precision matrix constructor,
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// but even if dirBasis is declared as mediump
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// some code was promoting it to high precision.
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out mediump vec4 _glesFragData;
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mat3 transposem3(mat3 m) {
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return mat3( m[0][0], m[1][0], m[2][0],
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m[0][1], m[1][1], m[2][1],
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m[0][2], m[1][2], m[2][2]);
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}
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in mediump vec3 inNormal;
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void main()
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{
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mediump mat3 dirBasis = transposem3(mat3(
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vec3( 0.8164966, 0.0, 0.5773503),
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vec3( -0.4082483, 0.7071068, 0.5773503),
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vec3( -0.4082483, -0.7071068, 0.5773503)));
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mediump vec4 c;
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c.xyz = dirBasis * inNormal;
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c.w = 0.0;
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_glesFragData = c;
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}
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