Open Tibia Server List
Grow your
Open Tibia server.
Reach new players
•
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•
Climb the rankings
map_heat.frag
main 60 lines · 1.5 KB Raw
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uniform sampler2D u_Tex0;2
varying vec2 v_TexCoord;3
varying vec2 v_TexCoord2;4
uniform float u_Time;5
uniform vec2 u_Resolution;6
uniform mat3 u_TextureMatrix;7
uniform vec2 u_MapCoords;8
const float PI = 3.1415926535897932;9
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// speed11
const float speed = 0.03;12
const float speed_x = 0.03;13
const float speed_y = 0.03;14
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// geometry16
const float intensity = 20.;17
const int steps = 2;18
const float frequency = 3.0;19
const int angle = 20; // better when a prime20
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// reflection and emboss22
const float delta = 350.;23
const float intence = 100.0;24
const float emboss = 0.2;25
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//---------- crystals effect27
float col(vec2 coord)28
{29
float delta_theta = 2.0 * PI / float(angle);30
float col = 0.0;31
float theta = 0.0;32
for(int i = 0; i < steps; i++) {33
vec2 adjc = coord;34
theta = delta_theta*float(i);35
adjc.x += cos(theta)*u_Time*speed + u_Time * speed_x;36
adjc.y -= sin(theta)*u_Time*speed - u_Time * speed_y;37
col = col + cos( (adjc.x*cos(theta) - adjc.y*sin(theta))*frequency)*intensity;38
}39
return cos(col);40
}41
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void main(void)43
{44
vec2 p = v_TexCoord, c1 = p, c2 = p;45
float cc1 = col(v_TexCoord2);46
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c2.x += u_Resolution.x/delta;48
float dx = emboss*(cc1-col(c2))/delta;49
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c2.x = p.x;51
c2.y += u_Resolution.y/delta;52
float dy = emboss*(cc1-col(c2))/delta;53
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c1.x += dx;55
c1.y += dy;56
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float alpha = 1.+dot(dx,dy)*intence;58
gl_FragColor = texture2D(u_Tex0,c1)*(alpha);59
}60