| 226 | } |
| 227 | |
| 228 | Float3 SkyCache::Sample(Float3 sampleDir) const |
| 229 | { |
| 230 | Assert_(StateR != nullptr); |
| 231 | |
| 232 | float gamma = AngleBetween(sampleDir, SunDirection); |
| 233 | float theta = AngleBetween(sampleDir, Float3(0, 1, 0)); |
| 234 | |
| 235 | Float3 radiance; |
| 236 | |
| 237 | radiance.x = float(arhosek_tristim_skymodel_radiance(StateR, theta, gamma, 0)); |
| 238 | radiance.y = float(arhosek_tristim_skymodel_radiance(StateG, theta, gamma, 1)); |
| 239 | radiance.z = float(arhosek_tristim_skymodel_radiance(StateB, theta, gamma, 2)); |
| 240 | |
| 241 | // Multiply by standard luminous efficacy of 683 lm/W to bring us in line with the photometric |
| 242 | // units used during rendering |
| 243 | radiance *= 683.0f; |
| 244 | |
| 245 | return radiance * FP16Scale; |
| 246 | } |
| 247 | |
| 248 | #endif // EnableSkyModel_ |
| 249 |
nothing calls this directly
no test coverage detected