blob: 43b42657526cff4db98709180ccd99f01ecd7f52 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
#version 150
#extension GL_ARB_explicit_attrib_location : enable
#extension GL_ARB_explicit_uniform_location : enable
layout(location = 0) out vec4 frag_color ;
layout(location = 1) uniform vec4 globalAmbient ;
uniform vec4 lightpos ;
uniform sampler2D texture ;
uniform sampler2D night_tex ;
in vec2 texcoord;
in vec4 position ;
uniform float mult ;
float exp1( float x ) {
return 2 / (1+exp(-x))-1;
}
void main() {
// the sun
vec3 lighttofrag = vec3(position*10000000 - lightpos) ;
vec3 lighttocamera = vec3(lightpos) ;
float coef = 1 - dot(normalize(lighttocamera), normalize(lighttofrag));
vec4 mul = vec4(vec3( pow(0.0005 / coef,0.8)), 1) ;
mul *= vec4(1.0,0.85,0.5,1.0) ;
frag_color =
mix(texture2D(night_tex,texcoord) * (1-globalAmbient.a),
texture2D(texture,texcoord) * vec4(normalize(globalAmbient.xyz),1),
(globalAmbient.a + 1) / 2) * 1.8 ;
frag_color = (frag_color + mul)*mult ;
}
|
