source/blender/gpu/shaders/material/gpu_shader_material_light_path.glsl


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

void node_light_path(out float is_camera_ray,
                     out float is_shadow_ray,
                     out float is_diffuse_ray,
                     out float is_glossy_ray,
                     out float is_singular_ray,
                     out float is_reflection_ray,
                     out float is_transmission_ray,
                     out float ray_length,
                     out float ray_depth,
                     out float diffuse_depth,
                     out float glossy_depth,
                     out float transparent_depth,
                     out float transmission_depth)
{
  /* Supported. */
  is_camera_ray = float(g_data.ray_type == RAY_TYPE_CAMERA);
  is_shadow_ray = float(g_data.ray_type == RAY_TYPE_SHADOW);
  is_diffuse_ray = float(g_data.ray_type == RAY_TYPE_DIFFUSE);
  is_glossy_ray = float(g_data.ray_type == RAY_TYPE_GLOSSY);
  /* Kind of supported. */
  is_singular_ray = is_glossy_ray;
  is_reflection_ray = is_glossy_ray;
  is_transmission_ray = is_glossy_ray;
  ray_depth = g_data.ray_depth;
  diffuse_depth = (is_diffuse_ray == 1.0) ? g_data.ray_depth : 0.0;
  glossy_depth = (is_glossy_ray == 1.0) ? g_data.ray_depth : 0.0;
  transmission_depth = (is_transmission_ray == 1.0) ? glossy_depth : 0.0;
  ray_length = g_data.ray_length;
  /* Not supported. */
  transparent_depth = 0.0;
}