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@@ -463,7 +463,10 @@ export default class ModelTextureMaterial extends THREE.RawShaderMaterial {
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defines.UnableMixTwoDepth = 1 //该系统在开启硬件加速后，webgl容易出bug。如过渡时黑屏报错，因无法将两个depth叠加。见bug记录
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}
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let {vs,fs} = Common.changeShaderToWebgl2(shader.vertexShader, shader.fragmentShader, 'RawShaderMaterial')
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-
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+ if(!Potree.settings.isWebgl2){
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+ defines['round(x)'] = 'floor(x + 0.5)' //webgl1 unsupport round
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+ fs = fs.replace('int(round(color.g * 255.0)) << 8', 'int(round(color.g * 255.0 * pow(2.0, 8.0)))') //unsupport <<
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+ }
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super({
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fragmentShader: fs,
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vertexShader: vs,
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xzw