66 lines
1.3 KiB
HTML
66 lines
1.3 KiB
HTML
<h2>Vertex shader example</h2>
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<pre><code>attribute vec3 vertex;
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attribute vec3 normal;
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uniform mat4 _mvProj;
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uniform mat3 _norm;
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varying vec3 vColor;
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varying vec3 localPos;
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#pragma include "light.glsl"
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// constants
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vec3 materialColor = vec3(1.0,0.7,0.8);
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vec3 specularColor = vec3(1.0,1.0,1.0);
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void main(void) {
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// compute position
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gl_Position = _mvProj * vec4(vertex, 1.0);
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localPos = vertex;
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// compute light info
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vec3 n = normalize(_norm * normal);
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vec3 diffuse;
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float specular;
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float glowingSpecular = 50.0;
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getDirectionalLight(n, _dLight, glowingSpecular, diffuse, specular);
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vColor = max(diffuse,_ambient.xyz)*materialColor+specular*specularColor+_ambient;
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}</code></pre>
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<h2>Fragment shader example</h2>
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<pre><code>#ifdef GL_ES
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precision highp float;
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#endif
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uniform vec3 BrickColor, MortarColor;
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uniform vec3 BrickSize;
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uniform vec3 BrickPct;
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varying vec3 vColor;
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varying vec3 localPos;
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void main()
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{
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vec3 color;
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vec3 position, useBrick;
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position = localPos / BrickSize.xyz;
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if (fract(position.y * 0.5) > 0.5){
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position.x += 0.5;
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position.z += 0.5;
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}
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position = fract(position);
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useBrick = step(position, BrickPct.xyz);
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color = mix(MortarColor, BrickColor, useBrick.x * useBrick.y * useBrick.z);
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color *= vColor;
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gl_FragColor = vec4(color, 1.0);
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}
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</code></pre>
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