Mercurial > hg > forks > gldragon

comparison shader.frag @ 28:d2839cbfaad8

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Some work on the default shaders.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 22 Nov 2019 08:39:48 +0200
parents 1404dfcee7b8
children 71f6c5cc8eec
comparison
equal deleted inserted replaced
27:097184bd34a8 28:d2839cbfaad8
1 void main() 1 varying vec3 snormal;
2 varying vec3 svertex;
3 uniform int nlights;
4
5
6 float maxdot(vec3 sveca, vec3 svecb)
2 { 7 {
3 gl_FragColor = vec4( 8 return max(dot(sveca, svecb), 0.0);
4 gl_FragCoord.x * 0.1, 9 }
5 gl_FragCoord.y * 0.001,
6 0.0,
7 1.0);
8 };
9 10
11
12 vec4 mclamp(vec4 svec)
13 {
14 return clamp(svec, 0.0, 1.0);
15 }
16
17
18 void main(void)
19 {
20 vec3 snormal = normalize(snormal);
21 vec3 srcVec = normalize(-svertex);
22 //vec4 poo = vec4(0.0, 0.0, 0.0, 0.0);
23 vec4 poo = gl_FragCoord;
24 //poo += vec4(snormal.x, snormal.y, snormal.z, 0.0);
25 vec4 finalColor = vec4(poo.x * 0.1, poo.y * 0.001, poo.z, 1.0);
26
27 for (int i = 0; i < nlights; i++)
28 {
29 vec3 lightVec = normalize(gl_LightSource[i].position.xyz - svertex);
30 vec3 refVec = normalize(-reflect(lightVec, snormal));
31
32 vec4 ambient = gl_FrontLightProduct[i].ambient;
33 vec4 diffuse = mclamp(gl_FrontLightProduct[i].diffuse * maxdot(snormal, lightVec));
34 vec4 specular = mclamp(
35 gl_FrontLightProduct[i].specular *
36 pow(maxdot(refVec, srcVec), gl_FrontMaterial.shininess));
37
38 finalColor += ambient + diffuse + specular;
39 }
40
41 gl_FragColor = gl_FrontLightModelProduct.sceneColor + finalColor;
42 }