Commit: d0b0e7efed709613e53effa3e0381312310a117f
Author: Clément Foucault
Date: Wed Nov 14 15:54:10 2018 +0100
Branches: blender2.8
https://developer.blender.org/rBd0b0e7efed709613e53effa3e0381312310a117f
Eevee: Cleanup: Fix wrong sun area light power calculation
===================================================================
M source/blender/draw/engines/eevee/eevee_lights.c
===================================================================
diff --git a/source/blender/draw/engines/eevee/eevee_lights.c
b/source/blender/draw/engines/eevee/eevee_lights.c
index 962cb7c2033..5336e197d02 100644
--- a/source/blender/draw/engines/eevee/eevee_lights.c
+++ b/source/blender/draw/engines/eevee/eevee_lights.c
@@ -661,8 +661,7 @@ static void eevee_light_setup(Object *ob, EEVEE_Light *evli)
// power = M_PI * M_PI * 0.78; /* XXX : Empirical, Fit cycles
power */
}
else {
- power = 1.0f / (4.0f * evli->radius * evli->radius * M_PI *
M_PI) * /* 1/(r²*Pi) */
- 12.5f; /* XXX : Empirical, Fit cycles power */
+ power = 1.0f / (evli->radius * evli->radius * M_PI); /*
1/(r²*Pi) */
/* Make illumation power closer to cycles for bigger radii.
Cycles uses a cos^3 term that we cannot reproduce
* so we account for that by scaling the light power. This
function is the result of a rough manual fitting. */
power *= 1.0f + evli->radius * evli->radius * 0.5f;
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