diff options
Diffstat (limited to 'intern/cycles/render/light.cpp')
| -rw-r--r-- | intern/cycles/render/light.cpp | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/intern/cycles/render/light.cpp b/intern/cycles/render/light.cpp index 8073c622040..755b941717e 100644 --- a/intern/cycles/render/light.cpp +++ b/intern/cycles/render/light.cpp @@ -118,6 +118,7 @@ NODE_DEFINE(Light) SOCKET_FLOAT(sizeu, "Size U", 1.0f); SOCKET_VECTOR(axisv, "Axis V", make_float3(0.0f, 0.0f, 0.0f)); SOCKET_FLOAT(sizev, "Size V", 1.0f); + SOCKET_BOOLEAN(round, "Round", false); SOCKET_INT(map_resolution, "Map Resolution", 0); @@ -756,12 +757,15 @@ void LightManager::device_update_points(Device *, float3 axisu = light->axisu*(light->sizeu*light->size); float3 axisv = light->axisv*(light->sizev*light->size); float area = len(axisu)*len(axisv); - float invarea = (area > 0.0f)? 1.0f/area: 1.0f; + if(light->round) { + area *= -M_PI_4_F; + } + float invarea = (area != 0.0f)? 1.0f/area: 1.0f; float3 dir = light->dir; dir = safe_normalize(dir); - if(light->use_mis && area > 0.0f) + if(light->use_mis && area != 0.0f) shader_id |= SHADER_USE_MIS; klights[light_index].co[0] = co.x; @@ -829,7 +833,10 @@ void LightManager::device_update_points(Device *, float3 axisu = light->axisu*(light->sizeu*light->size); float3 axisv = light->axisv*(light->sizev*light->size); float area = len(axisu)*len(axisv); - float invarea = (area > 0.0f)? 1.0f/area: 1.0f; + if(light->round) { + area *= -M_PI_4_F; + } + float invarea = (area != 0.0f)? 1.0f/area: 1.0f; float3 dir = light->dir; dir = safe_normalize(dir); |