32 lines
567 B
Plaintext
32 lines
567 B
Plaintext
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#ifdef USE_NORMALMAP
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#ifdef OBJECTSPACE_NORMALMAP
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normal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0; // overrides both flatShading and attribute normals
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#ifdef FLIP_SIDED
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normal = - normal;
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#endif
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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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normal = normalize( normalMatrix * normal );
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#else // tangent-space normal map
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normal = perturbNormal2Arb( -vViewPosition, normal );
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#endif
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#elif defined( USE_BUMPMAP )
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normal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );
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#endif
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