62 lines
1.5 KiB
GLSL
62 lines
1.5 KiB
GLSL
varying vec3 N;
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varying vec3 L;
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varying vec3 V;
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varying vec3 P;
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varying vec2 T;
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uniform sampler2D Maps[3];
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uniform sampler2D NormalMap;
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uniform float Time;
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void main()
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{
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vec3 bump = normalize(texture2D(NormalMap,T).xyz*2.0-1.0)-vec3(0,0,1);
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vec3 n = normalize(N);
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vec3 bn = normalize(N);//+bump*2.0);
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vec3 l = normalize(L);
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vec3 v = normalize(V);
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float HighlightSize=0.1;
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float ShadowSize=0.2;
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float OutlineWidth=0.2;
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vec4 MidColour=mix(vec4(0.171,0.273,0.336,1),
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gl_FrontMaterial.diffuse,
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smoothstep(-5.0,5.0,P.y));
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vec4 HighlightColour=MidColour*1.3;
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vec4 ShadowColour=MidColour*0.6;
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MidColour.a=1.0;
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HighlightColour.a=1.0;
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ShadowColour.a=1.0;
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vec4 texture;
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float t = fract(Time*0.1)*3.0;
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if (t<1.0) // mix bet 0 and 1
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{
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texture = mix(texture2D(Maps[0], T*10.0),texture2D(Maps[1], T*10.0),t);
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}
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else if (t<2.0 && t>1.0) // mix bet 1 and 2
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{
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texture = mix(texture2D(Maps[1], T*10.0),texture2D(Maps[2], T*10.0),t-1.0);
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}
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else // mix bet 2 and 0
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{
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texture = mix(texture2D(Maps[2], T*10.0),texture2D(Maps[0], T*10.0),t-2.0);
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}
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float lambert = dot(l,bn);
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vec4 colour = MidColour;
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if (lambert > 1.0-HighlightSize) colour = HighlightColour;
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if (lambert < ShadowSize) colour = ShadowColour;
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if (dot(n,v) < OutlineWidth) colour = vec4(0,0,0,1);
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if (dot(n,v) < 0.0) colour = MidColour*texture*0.5;
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// add linear fog
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//float fog_factor = clamp((gl_Fog.end - gl_FogFragCoord) * gl_Fog.scale, 0.0, 1.0);
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//gl_FragColor = mix(gl_Fog.color, colour, fog_factor);
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gl_FragColor = colour;
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}
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