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
|
/**
* @file alphaF.glsl
*
* Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#extension GL_ARB_texture_rectangle : enable
uniform sampler2D diffuseMap;
uniform sampler2DShadow shadowMap0;
uniform sampler2DShadow shadowMap1;
uniform sampler2DShadow shadowMap2;
uniform sampler2DShadow shadowMap3;
uniform sampler2D noiseMap;
uniform sampler2DRect positionMap;
uniform mat4 shadow_matrix[4];
uniform vec4 shadow_clip;
uniform vec2 screen_res;
vec3 atmosLighting(vec3 light);
vec3 scaleSoftClip(vec3 light);
varying vec3 vary_ambient;
varying vec3 vary_directional;
varying vec3 vary_fragcoord;
varying vec3 vary_position;
uniform float alpha_soften;
void main()
{
vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
frag *= screen_res;
vec3 samp_pos = texture2DRect(positionMap, frag).xyz;
float shadow = 1.0;
vec4 pos = vec4(vary_position, 1.0);
if (pos.z > -shadow_clip.w)
{
if (pos.z < -shadow_clip.z)
{
vec4 lpos = shadow_matrix[3]*pos;
shadow = shadow2DProj(shadowMap3, lpos).x;
shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
}
else if (pos.z < -shadow_clip.y)
{
vec4 lpos = shadow_matrix[2]*pos;
shadow = shadow2DProj(shadowMap2, lpos).x;
}
else if (pos.z < -shadow_clip.x)
{
vec4 lpos = shadow_matrix[1]*pos;
shadow = shadow2DProj(shadowMap1, lpos).x;
}
else
{
vec4 lpos = shadow_matrix[0]*pos;
shadow = shadow2DProj(shadowMap0, lpos).x;
}
}
vec4 col = vec4(vary_ambient + vary_directional.rgb*shadow, gl_Color.a);
vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * col;
color.rgb = atmosLighting(color.rgb);
color.rgb = scaleSoftClip(color.rgb);
if (samp_pos.z != 0.0)
{
float dist_factor = alpha_soften;
float a = gl_Color.a;
a *= a;
dist_factor *= 1.0/(1.0-a);
color.a *= min((pos.z-samp_pos.z)*dist_factor, 1.0);
}
//gl_FragColor = gl_Color;
gl_FragColor = color;
//gl_FragColor = vec4(1,0,1,1);
}
|
