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
|
/**
* @file alphaF.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* $/LicenseInfo$
*/
#extension GL_ARB_texture_rectangle : enable
uniform sampler2D diffuseMap;
uniform sampler2D noiseMap;
uniform sampler2DRect depthMap;
uniform mat4 shadow_matrix[6];
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;
varying vec3 vary_light;
uniform float alpha_soften;
uniform mat4 inv_proj;
vec4 getPosition(vec2 pos_screen)
{
float depth = texture2DRect(depthMap, pos_screen.xy).a;
vec2 sc = pos_screen.xy*2.0;
sc /= screen_res;
sc -= vec2(1.0,1.0);
vec4 ndc = vec4(sc.x, sc.y, 2.0*depth-1.0, 1.0);
vec4 pos = inv_proj * ndc;
pos /= pos.w;
pos.w = 1.0;
return pos;
}
void main()
{
vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
frag *= screen_res;
vec3 samp_pos = getPosition(frag).xyz;
vec4 pos = vec4(vary_position, 1.0);
vec4 col = vec4(vary_ambient + vary_directional.rgb, 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 && gl_Color.a < 1.0)
{
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);
//gl_FragColor = vec4(1,0,1,1)*shadow;
}
|
