fix attempt to modify emissive uniform (#1771)
Previously loading the boom box gltf file panic'd with `ERROR: 0:335: 'assign' : l-value required "anon@7" (can't modify a uniform)`
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@ -326,6 +326,7 @@ void main() {
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# endif
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# endif
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# ifdef STANDARDMATERIAL_EMISSIVE_TEXTURE
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# ifdef STANDARDMATERIAL_EMISSIVE_TEXTURE
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vec4 emissive = emissive;
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// TODO use .a for exposure compensation in HDR
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// TODO use .a for exposure compensation in HDR
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emissive.rgb *= texture(sampler2D(StandardMaterial_emissive_texture, StandardMaterial_emissive_texture_sampler), v_Uv).rgb;
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emissive.rgb *= texture(sampler2D(StandardMaterial_emissive_texture, StandardMaterial_emissive_texture_sampler), v_Uv).rgb;
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# endif
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# endif
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