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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
uniform mat4 mWorldViewProj;
uniform mat4 mInvWorld;
uniform mat4 mTransWorld;
uniform mat4 mWorld;
uniform float dayNightRatio;
uniform float animationTimer;
uniform vec3 eyePosition;
varying vec3 vPosition;
varying vec3 worldPosition;
varying vec3 eyeVec;
varying vec3 lightVec;
const float BS = 10.0;
#ifdef ENABLE_WAVING_PLANTS
float smoothCurve( float x ) {
return x * x *( 3.0 - 2.0 * x );
}
float triangleWave( float x ) {
return abs( fract( x + 0.5 ) * 2.0 - 1.0 );
}
float smoothTriangleWave( float x ) {
return smoothCurve( triangleWave( x ) ) * 2.0 - 1.0;
}
#endif
void main(void)
{
gl_TexCoord[0] = gl_MultiTexCoord0;
#ifdef ENABLE_WAVING_PLANTS
vec4 pos = gl_Vertex;
vec4 pos2 = mWorld * gl_Vertex;
if (gl_TexCoord[0].y < 0.05) {
pos.x += (smoothTriangleWave(animationTimer * 20.0 + pos2.x * 0.1 + pos2.z * 0.1) * 2.0 - 1.0) * 0.8;
pos.y -= (smoothTriangleWave(animationTimer * 10.0 + pos2.x * -0.5 + pos2.z * -0.5) * 2.0 - 1.0) * 0.4;
}
gl_Position = mWorldViewProj * pos;
#else
gl_Position = mWorldViewProj * gl_Vertex;
#endif
vPosition = gl_Position.xyz;
worldPosition = (mWorld * gl_Vertex).xyz;
vec3 sunPosition = vec3 (0.0, eyePosition.y * BS + 900.0, 0.0);
lightVec = sunPosition - worldPosition;
eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
vec4 color;
//color = vec4(1.0, 1.0, 1.0, 1.0);
float day = gl_Color.r;
float night = gl_Color.g;
float light_source = gl_Color.b;
/*color.r = mix(night, day, dayNightRatio);
color.g = color.r;
color.b = color.r;*/
float rg = mix(night, day, dayNightRatio);
rg += light_source * 2.5; // Make light sources brighter
float b = rg;
// Moonlight is blue
b += (day - night) / 13.0;
rg -= (day - night) / 13.0;
// Emphase blue a bit in darker places
// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
b += max(0.0, (1.0 - abs(b - 0.13)/0.17) * 0.025);
// Artificial light is yellow-ish
// See C++ implementation in mapblock_mesh.cpp finalColorBlend()
rg += max(0.0, (1.0 - abs(rg - 0.85)/0.15) * 0.065);
color.r = clamp(rg,0.0,1.0);
color.g = clamp(rg,0.0,1.0);
color.b = clamp(b,0.0,1.0);
// Make sides and bottom darker than the top
color = color * color; // SRGB -> Linear
if(gl_Normal.y <= 0.5)
color *= 0.6;
color = sqrt(color); // Linear -> SRGB
color.a = gl_Color.a;
gl_FrontColor = gl_BackColor = color;
}
|
