blob: 366290a50da8468a53329afb7aed7210a852869a (
plain)
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
|
#version 330
in vec3 vertexPosition;
in vec2 vertexTexCoord;
in vec3 vertexNormal;
in vec4 vertexColor;
uniform mat4 mvp;
uniform mat4 matNormal;
uniform vec3 sun_direction;
uniform vec3 sun_colour;
uniform float sun_intensity;
uniform vec3 moon_direction;
uniform vec3 moon_colour;
uniform float moon_intensity;
uniform vec3 ambient_colour;
uniform float ambient_intensity;
uniform vec2 uv_tiling;
uniform vec2 uv_offset;
out vec2 frag_texcoord;
out vec4 frag_colour;
out vec3 frag_lighting;
void main() {
vec3 canopy_center = vec3(0.0, 4.0, 0.0);
vec3 canopy_normal = vertexNormal;
vec3 offset = vertexPosition - canopy_center;
if (dot(offset, offset) > 0.0001) {
canopy_normal = normalize(offset);
}
vec3 world_normal = normalize((matNormal * vec4(canopy_normal, 0.0)).xyz);
float sun_facing = dot(world_normal, sun_direction);
float moon_facing = dot(world_normal, moon_direction);
float sun_diffuse = max(sun_facing, 0.0) + 0.1 * max(-sun_facing, 0.0);
float moon_diffuse = max(moon_facing, 0.0) + 0.1 * max(-moon_facing, 0.0);
vec3 ambient_light = ambient_colour * ambient_intensity;
vec3 sun_light = sun_colour * sun_intensity * sun_diffuse;
vec3 moon_light = moon_colour * moon_intensity * moon_diffuse;
frag_lighting = ambient_light + sun_light + moon_light;
frag_texcoord = vertexTexCoord * uv_tiling + uv_offset;
frag_colour = vertexColor;
gl_Position = mvp * vec4(vertexPosition, 1.0);
}
|
