diff options
| author | Matteo Falduto <matteolegna> | 2021-04-01 06:35:56 +0300 |
|---|---|---|
| committer | Brecht Van Lommel <brecht@blender.org> | 2021-04-01 13:31:01 +0300 |
| commit | a4260ac21977acd5b9cd792f2a68c3aa78dd91cd (patch) | |
| tree | 61bdd5358e5279ddb9c13c53bb3079d1d8f79b65 /intern/cycles/kernel/kernel_types.h | |
| parent | c859e1afa0dcca1a495c6b25d00bab65bf94be0b (diff) | |
Cycles: add a spread setting for area lights
This simulates the effect of a honeycomb or grid placed in front of a softbox.
In practice, it works by attenuating rays coming off-angle as a function of the
provided spread angle parameter.
Setting the parameter to 180 degrees poses no restrictions to the rays, making
the light behave the same way as before this patch.
The total light power is normalized based on the spread angle, so that the
light strength remains the same.
Differential Revision: https://developer.blender.org/D10594
Diffstat (limited to 'intern/cycles/kernel/kernel_types.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_types.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/intern/cycles/kernel/kernel_types.h b/intern/cycles/kernel/kernel_types.h index df56360b1df..ab54fda14af 100644 --- a/intern/cycles/kernel/kernel_types.h +++ b/intern/cycles/kernel/kernel_types.h @@ -1501,9 +1501,9 @@ typedef struct KernelAreaLight { float axisu[3]; float invarea; float axisv[3]; - float pad1; + float tan_spread; float dir[3]; - float pad2; + float normalize_spread; } KernelAreaLight; typedef struct KernelDistantLight { |