33 lines
756 B
GLSL
33 lines
756 B
GLSL
#version 100
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precision highp float;
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varying vec3 v_normal;
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varying vec2 v_uv;
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varying vec3 v_viewDir;
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uniform sampler2D u_tex;
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uniform vec3 u_lightDir;
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const float specPower = 40.0;
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vec3 calcLight(vec3 dir, vec3 norm, vec3 lcol, vec3 col){
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vec3 reflectVec = reflect(-dir, norm);
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float diffuse = max(0.0,dot(norm,dir));
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vec3 vd = normalize(v_viewDir);
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float specular = 0.5*pow(max(dot(vd, reflectVec), 0.0), specPower);
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return col*diffuse*lcol + specular*lcol;
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}
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void main()
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{
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vec4 col = texture2D(u_tex, v_uv);
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vec3 normal = normalize(v_normal);
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gl_FragColor = vec4(0.0);
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//float diffuse = max(0.0,dot(normal,u_lightDir));
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gl_FragColor.rgb = calcLight(u_lightDir,normal,vec3(1.0),col.rgb);
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//gl_FragColor = col;
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gl_FragColor.rgb+=0.1;
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}
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