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floats were being promoted to doubles in quite a few cases (using gcc's -Wdouble-promotion), went over render module and use float constants, gives small but consistent speedup - approx 3%.

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This commit is contained in:
Campbell Barton
2011-08-20 17:39:13 +00:00
parent d4dec1c3bc
commit f8ec017900
18 changed files with 558 additions and 565 deletions
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20
source/blender/python/generic/noise_py_api.c
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@@ -210,8 +210,8 @@ static void randuvec(float v[3])
if((r = 1.f - v[2] * v[2]) > 0.f) {
float a = (float)(6.283185307f * frand());
r = (float)sqrt(r);
v[0] = (float)(r * cos(a));
v[1] = (float)(r * sin(a));
v[0] = (float)(r * cosf(a));
v[1] = (float)(r * sinf(a));
}
else {
v[2] = 1.f;
@@ -254,7 +254,7 @@ static PyObject *Noise_noise(PyObject *UNUSED(self), PyObject *args)
if(!PyArg_ParseTuple(args, "(fff)|i:noise", &x, &y, &z, &nb))
return NULL;
return PyFloat_FromDouble((2.0 * BLI_gNoise(1.0, x, y, z, 0, nb) - 1.0));
return PyFloat_FromDouble((2.0f * BLI_gNoise(1.0f, x, y, z, 0, nb) - 1.0f));
}
/*-------------------------------------------------------------------------*/
@@ -264,11 +264,11 @@ static PyObject *Noise_noise(PyObject *UNUSED(self), PyObject *args)
static void noise_vector(float x, float y, float z, int nb, float v[3])
{
/* Simply evaluate noise at 3 different positions */
v[0] = (float)(2.0 * BLI_gNoise(1.f, x + 9.321f, y - 1.531f, z - 7.951f, 0,
nb) - 1.0);
v[1] = (float)(2.0 * BLI_gNoise(1.f, x, y, z, 0, nb) - 1.0);
v[2] = (float)(2.0 * BLI_gNoise(1.f, x + 6.327f, y + 0.1671f, z - 2.672f, 0,
nb) - 1.0);
v[0]= (float)(2.0f * BLI_gNoise(1.f, x + 9.321f, y - 1.531f, z - 7.951f, 0,
nb) - 1.0f);
v[1]= (float)(2.0f * BLI_gNoise(1.f, x, y, z, 0, nb) - 1.0f);
v[2]= (float)(2.0f * BLI_gNoise(1.f, x + 6.327f, y + 0.1671f, z - 2.672f, 0,
nb) - 1.0f);
}
static PyObject *Noise_vector(PyObject *UNUSED(self), PyObject *args)
@@ -291,7 +291,7 @@ static float turb(float x, float y, float z, int oct, int hard, int nb,
float amp, out, t;
int i;
amp = 1.f;
out = (float)(2.0 * BLI_gNoise(1.f, x, y, z, 0, nb) - 1.0);
out = (float)(2.0f * BLI_gNoise(1.f, x, y, z, 0, nb) - 1.0f);
if(hard)
out = (float)fabs(out);
for(i = 1; i < oct; i++) {
@@ -299,7 +299,7 @@ static float turb(float x, float y, float z, int oct, int hard, int nb,
x *= freqscale;
y *= freqscale;
z *= freqscale;
t = (float)(amp * (2.0 * BLI_gNoise(1.f, x, y, z, 0, nb) - 1.0));
t = (float)(amp * (2.0f * BLI_gNoise(1.f, x, y, z, 0, nb) - 1.0f));
if(hard)
t = (float)fabs(t);
out += t;