star-sf

commit 7b2b81aa5f40ea71924e7eac6e61f817662edabd
parent cfb45d5b8e83d37ffd27f14b1ab24ac6413e6d44
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Mon, 12 Sep 2016 15:21:59 +0200

Fix and push further the ssf_bxdf test

Diffstat:
M
src/test_ssf_bxdf.c
 | 
54
++++++++++++++++++++++++++++++++++++++++++++++++------

1 file changed, 48 insertions(+), 6 deletions(-)
diff --git a/src/test_ssf_bxdf.c b/src/test_ssf_bxdf.c
@@ -25,9 +25,12 @@ struct ALIGN(64) bxdf {
   uint32_t id;
   double u;
   double v;
-  double w[3];
+  double wi[3];
+  double wo[3];
   double N[3];
   double reflectivity;
+  double value;
+  double pdf;
 };
 
 static res_T
@@ -54,20 +57,50 @@ bxdf_sample
   (void* bxdf,
    const double u,
    const double v,
-   const double w[3],
+   const double wi[3],
    const double N[3],
-   double dir[4])
+   double wo[4])
 {
   struct bxdf* BxDF = bxdf;
   NCHECK(BxDF, NULL);
   CHECK(BxDF->u, u);
   CHECK(BxDF->v, v);
-  CHECK(d3_eq(BxDF->w, w), 1);
+  CHECK(d3_eq(BxDF->wi, wi), 1);
   CHECK(d3_eq(BxDF->N, N), 1);
-  d4(dir, 1.0, 2.0, 3.0, 4.0);
+  d4(wo, 1.0, 2.0, 3.0, 4.0);
   return BxDF->reflectivity;
 }
 
+static double
+bxdf_eval
+  (void* bxdf,
+   const double wi[3],
+   const double wo[3])
+{
+  struct bxdf* BxDF = bxdf;
+  NCHECK(BxDF, NULL);
+  NCHECK(wi, NULL);
+  NCHECK(wo, NULL);
+  CHECK(d3_eq(BxDF->wi, wi), 1);
+  CHECK(d3_eq(BxDF->wo, wo), 1);
+  return BxDF->value;
+}
+
+static double
+bxdf_pdf
+  (void* bxdf,
+   const double wi[3],
+   const double wo[3])
+{
+  struct bxdf* BxDF = bxdf;
+  NCHECK(BxDF, NULL);
+  NCHECK(wi, NULL);
+  NCHECK(wo, NULL);
+  CHECK(d3_eq(BxDF->wi, wi), 1);
+  CHECK(d3_eq(BxDF->wo, wo), 1);
+  return BxDF->pdf;
+}
+
 int
 main(int argc, char** argv)
 {
@@ -85,6 +118,8 @@ main(int argc, char** argv)
   type.init = bxdf_init;
   type.release = bxdf_release;
   type.sample = bxdf_sample;
+  type.eval = bxdf_eval;
+  type.pdf = bxdf_pdf;
   type.sizeof_bxdf = sizeof(struct bxdf);
   type.alignof_bxdf = ALIGNOF(struct bxdf);
 
@@ -140,7 +175,7 @@ main(int argc, char** argv)
 
   d3_normalize(w, d3(w, -1, -1, 0));
   d3(N, 0.0, 1.0, 0.0);
-  d3_set(data->w, w);
+  d3_set(data->wi, w);
   d3_set(data->N, N);
   data->u = 0.0;
   data->v = 0.0;
@@ -154,6 +189,13 @@ main(int argc, char** argv)
   data->reflectivity = 3.14;
   CHECK(ssf_bxdf_sample(bxdf, 0.5, 0.5, w, N, dir), 3.14);
 
+  d3_normalize(dir, dir);
+  d3_set(data->wo, dir);
+  data->value = 4.567;
+  CHECK(ssf_bxdf_eval(bxdf, w, dir), data->value);
+  data->pdf = 8.90;
+  CHECK(ssf_bxdf_pdf(bxdf, w, dir), data->pdf);
+
   CHECK(bxdf_is_init, 1);
   CHECK(ssf_bxdf_ref_put(bxdf), RES_OK);
   CHECK(bxdf_is_init, 0);