diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_camera.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_camera.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/intern/cycles/kernel/kernel_camera.h b/intern/cycles/kernel/kernel_camera.h index 1b2fe8c56ee..abc63d99c74 100644 --- a/intern/cycles/kernel/kernel_camera.h +++ b/intern/cycles/kernel/kernel_camera.h @@ -229,5 +229,20 @@ __device void camera_sample(KernelGlobals *kg, int x, int y, float filter_u, flo camera_sample_panorama(kg, raster_x, raster_y, lens_u, lens_v, ray); } +/* Utilities */ + +__device_inline float camera_distance(KernelGlobals *kg, float3 P) +{ + Transform cameratoworld = kernel_data.cam.cameratoworld; + float3 camP = make_float3(cameratoworld.x.w, cameratoworld.y.w, cameratoworld.z.w); + + if(kernel_data.cam.type == CAMERA_ORTHOGRAPHIC) { + float3 camD = make_float3(cameratoworld.x.z, cameratoworld.y.z, cameratoworld.z.z); + return fabsf(dot((P - camP), camD)); + } + else + return len(P - camP); +} + CCL_NAMESPACE_END |