29 lines
845 B
Bash
29 lines
845 B
Bash
precision mediump float;
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//接收从顶点着色器过来的参数
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varying vec4 diffuse;
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varying vec4 specular;
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varying float vEdge;
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void main()
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{
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float averageDiffuse = (diffuse.x + diffuse.y + diffuse.z)/3.0;
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if(averageDiffuse<0.5){
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averageDiffuse=0.2;
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} else {
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averageDiffuse=0.8;
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}
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vec4 diffuseFinal = vec4(averageDiffuse, averageDiffuse, averageDiffuse, 1.0);
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float averageSpecular = (specular.x + specular.y + specular.z)/3.0;
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if(averageSpecular<0.18){
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averageSpecular=0.0;
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} else {
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averageSpecular=1.0;
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}
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vec4 specularFinal = vec4(averageSpecular, averageSpecular, averageSpecular, 1.0);
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float edgeFinal = 1.0;
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if(vEdge<0.2){//如果为边缘像素，用黑色描边
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edgeFinal = 0.0;
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}
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gl_FragColor = edgeFinal*(specularFinal+diffuseFinal);//给此片元颜色值
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} |