diff options
| author | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2018-02-20 16:22:40 +0300 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2018-02-22 02:55:32 +0300 |
| commit | 2d81758aa650256d6b6ed283e43b6c35808ed205 (patch) | |
| tree | db336da6924982031bbcc30844b496d600fd407a /intern/cycles/kernel/kernel_types.h | |
| parent | 84e92f9b3c50433221a4c30f3a14713d99680f3a (diff) | |
Cycles: better path termination for transparency.
We now continue transparent paths after diffuse/glossy/transmission/volume
bounces are exceeded. This avoids unexpected boundaries in volumes with
transparent boundaries. It is also required for MIS to work correctly with
transparent surfaces, as we also continue through these in shadow rays.
The main visible changes is that volumes will now be lit by the background
even at volume bounces 0, same as surfaces.
Fixes T53914 and T54103.
Diffstat (limited to 'intern/cycles/kernel/kernel_types.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_types.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/intern/cycles/kernel/kernel_types.h b/intern/cycles/kernel/kernel_types.h index c26769341f0..44e7fd46adc 100644 --- a/intern/cycles/kernel/kernel_types.h +++ b/intern/cycles/kernel/kernel_types.h @@ -361,6 +361,17 @@ enum PathRayFlag { PATH_RAY_STORE_SHADOW_INFO = (1 << 18), /* Zero background alpha, for camera or transparent glass rays. */ PATH_RAY_TRANSPARENT_BACKGROUND = (1 << 19), + /* Terminate ray immediately at next bounce. */ + PATH_RAY_TERMINATE_IMMEDIATE = (1 << 20), + /* Ray is to be terminated, but continue with transparent bounces and + * emission as long as we encounter them. This is required to make the + * MIS between direct and indirect light rays match, as shadow rays go + * through transparent surfaces to reach emisison too. */ + PATH_RAY_TERMINATE_AFTER_TRANSPARENT = (1 << 21), + /* Ray is to be terminated. */ + PATH_RAY_TERMINATE = (PATH_RAY_TERMINATE_IMMEDIATE|PATH_RAY_TERMINATE_AFTER_TRANSPARENT), + /* Path and shader is being evaluated for direct lighting emission. */ + PATH_RAY_EMISSION = (1 << 22) }; /* Closure Label */ |