diff options
| author | Sergey Sharybin <sergey.vfx@gmail.com> | 2017-02-09 16:19:01 +0300 |
|---|---|---|
| committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2017-03-27 11:46:03 +0300 |
| commit | d14e39622ae627c1a4329e630715c5197c762493 (patch) | |
| tree | d246f7083bcc82236488d5aaec25cb2e735c4145 /intern/cycles/kernel/kernel_emission.h | |
| parent | 5aaa643947929cf807c349b2b5fe33d4dc669c3d (diff) | |
Cycles: First implementation of shadow catcher
It uses an idea of accumulating all possible light reachable across the
light path (without taking shadow blocked into account) and accumulating
total shaded light across the path. Dividing second figure by first one
seems to be giving good estimate of the shadow.
In fact, to my knowledge, it's something really similar to what is
happening in the denoising branch, so we are aligned here which is good.
The workflow is following:
- Create an object which matches real-life object on which shadow is
to be catched.
- Create approximate similar material on that object.
This is needed to make indirect light properly affecting CG objects
in the scene.
- Mark object as Shadow Catcher in the Object properties.
Ideally, after doing that it will be possible to render the image and
simply alpha-over it on top of real footage.
Diffstat (limited to 'intern/cycles/kernel/kernel_emission.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_emission.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/intern/cycles/kernel/kernel_emission.h b/intern/cycles/kernel/kernel_emission.h index cf14a159e47..9e7d51f23f5 100644 --- a/intern/cycles/kernel/kernel_emission.h +++ b/intern/cycles/kernel/kernel_emission.h @@ -156,7 +156,12 @@ ccl_device_noinline bool direct_emission(KernelGlobals *kg, if(bsdf_eval_is_zero(eval)) return false; - if(kernel_data.integrator.light_inv_rr_threshold > 0.0f) { + if(kernel_data.integrator.light_inv_rr_threshold > 0.0f +#ifdef __SHADOW_TRICKS__ + && (state->flag & PATH_RAY_SHADOW_CATCHER) == 0 +#endif + ) + { float probability = max3(fabs(bsdf_eval_sum(eval))) * kernel_data.integrator.light_inv_rr_threshold; if(probability < 1.0f) { if(rand_terminate >= probability) { |