star-gf

commit b00b97104ea8e56ba54cda0e4775f6786fd361ac
parent d69927c18af24f9b01c4f4543effceaa7f9f740b
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Mon, 15 Feb 2016 16:18:18 +0100

Update comments

Diffstat:
M
src/sgf_estimator.c
 | 
9
++++++---

1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/sgf_estimator.c b/src/sgf_estimator.c
@@ -128,10 +128,14 @@ gebhart_radiative_path
   f3_normalize(normal, attrib.value);
 
   /* Uniformly sample the primitive to define the starting position of the
-   * radiative path */
+   * radiative path.
+   *
+   * TODO the generation of canonical single precision random variables should
+   * be handled by the Star-Sampling library to ensure the uniformity of the
+   * distribution, and to avoid numerical issues leading to "out of bound"
+   * variables */
   do { u = (float)ssp_rng_canonical(rng); } while(u >= 1.f);
   do { v = (float)ssp_rng_canonical(rng); } while(v >= 1.f);
-
   S3D(primitive_sample(&prim, u, v, st));
   S3D(primitive_get_attrib(&prim, S3D_POSITION, st, &attrib));
   f3_set(pos, attrib.value);
@@ -290,7 +294,6 @@ estimator_get_status
   }
   setup_status(acc, estimator->nsteps, status);
   return RES_OK;
-
 }
 
 static void