Mercurial > hg > forks > gldragon

annotate shader.frag @ 107:2b30217a3c39 default tip

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Fix verbose build echos.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 29 Feb 2024 21:48:47 +0200
parents 71f6c5cc8eec
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 varying vec3 snormal;
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2 varying vec3 svertex;
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3 uniform int nlights;
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71f6c5cc8eec Add 'ftime' uniform for shaders, which is time in milliseconds from start of rendering loop.
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4 uniform float ftime;
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7 float maxdot(vec3 sveca, vec3 svecb)
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8 {
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9 return max(dot(sveca, svecb), 0.0);
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10 }
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13 vec4 mclamp(vec4 svec)
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14 {
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15 return clamp(svec, 0.0, 1.0);
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16 }
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19 void main(void)
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20 {
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21 vec3 snormal = normalize(snormal);
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22 vec3 srcVec = normalize(-svertex);
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23 //vec4 poo = vec4(0.0, 0.0, 0.0, 0.0);
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24 vec4 poo = gl_FragCoord;
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25 //poo += vec4(snormal.x, snormal.y, snormal.z, 0.0);
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26 vec4 finalColor = vec4(poo.x * 0.1, poo.y * 0.001, poo.z + sin(ftime * 0.001), 1.0);
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28 for (int i = 0; i < nlights; i++)
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29 {
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30 vec3 lightVec = normalize(gl_LightSource[i].position.xyz - svertex);
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31 vec3 refVec = normalize(-reflect(lightVec, snormal));
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33 vec4 ambient = gl_FrontLightProduct[i].ambient;
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34 vec4 diffuse = mclamp(gl_FrontLightProduct[i].diffuse * maxdot(snormal, lightVec));
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35 vec4 specular = mclamp(
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36 gl_FrontLightProduct[i].specular *
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37 pow(maxdot(refVec, srcVec), gl_FrontMaterial.shininess));
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39 finalColor += ambient + diffuse + specular;
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40 }
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42 gl_FragColor = gl_FrontLightModelProduct.sceneColor + finalColor;
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43 }