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Fix a few places in examples where C reference implementaion had a double-precision

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fp constant undesirably causing computation to be done in double precision.

Makes C scalar versions of the options pricing models, rt, and aobench 3-5% faster.
Makes scalar version of noise about 15% faster.
Others are unchanged.
This commit is contained in:
Matt Pharr
2011-09-01 16:31:22 -07:00
parent eb7913f1dd
commit 99221f7d17
6 changed files with 24 additions and 24 deletions
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18
examples/aobench/ao_serial.cpp
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@@ -140,7 +140,7 @@ ray_plane_intersect(Isect &isect, Ray &ray,
float d = -dot(plane.p, plane.n);
float v = dot(ray.dir, plane.n);
if (fabsf(v) < 1.0e-17)
if (fabsf(v) < 1.0e-17f)
return;
else {
float t = -(dot(ray.org, plane.n) + d) / v;
@@ -183,11 +183,11 @@ orthoBasis(vec basis[3], const vec &n) {
basis[2] = n;
basis[1].x = 0.0; basis[1].y = 0.0; basis[1].z = 0.0;
if ((n.x < 0.6) && (n.x > -0.6)) {
if ((n.x < 0.6f) && (n.x > -0.6f)) {
basis[1].x = 1.0;
} else if ((n.y < 0.6) && (n.y > -0.6)) {
} else if ((n.y < 0.6f) && (n.y > -0.6f)) {
basis[1].y = 1.0;
} else if ((n.z < 0.6) && (n.z > -0.6)) {
} else if ((n.z < 0.6f) && (n.z > -0.6f)) {
basis[1].z = 1.0;
} else {
basis[1].x = 1.0;
@@ -224,7 +224,7 @@ ambient_occlusion(Isect &isect, Plane &plane,
float phi = 2.0f * M_PI * drand48();
float x = cosf(phi) * theta;
float y = sinf(phi) * theta;
float z = sqrtf(1.0 - theta * theta);
float z = sqrtf(1.0f - theta * theta);
// local . global
float rx = x * basis[0].x + y * basis[1].x + z * basis[2].x;
@@ -236,14 +236,14 @@ ambient_occlusion(Isect &isect, Plane &plane,
ray.dir.y = ry;
ray.dir.z = rz;
occIsect.t = 1.0e+17;
occIsect.t = 1.0e+17f;
occIsect.hit = 0;
for (int snum = 0; snum < 3; ++snum)
ray_sphere_intersect(occIsect, ray, spheres[snum]);
ray_plane_intersect (occIsect, ray, plane);
if (occIsect.hit) occlusion += 1.0;
if (occIsect.hit) occlusion += 1.f;
}
}
@@ -280,10 +280,10 @@ static void ao_scanlines(int y0, int y1, int w, int h, int nsubsamples,
ray.dir.x = px;
ray.dir.y = py;
ray.dir.z = -1.0;
ray.dir.z = -1.0f;
vnormalize(ray.dir);
isect.t = 1.0e+17;
isect.t = 1.0e+17f;
isect.hit = 0;
for (int snum = 0; snum < 3; ++snum)