20 lines
483 B
Plaintext
20 lines
483 B
Plaintext
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#ifdef FLAT_SHADED
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// Workaround for Adreno/Nexus5 not able able to do dFdx( vViewPosition ) ...
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vec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );
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vec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );
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vec3 normal = normalize( cross( fdx, fdy ) );
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#else
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vec3 normal = normalize( vNormal );
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#ifdef DOUBLE_SIDED
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normal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );
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#endif
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#endif
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