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Eevee: Fix volume rendering glitches. 

The bug was due to the Halton function returning uninitialized value for 0 iteration.
This commit is contained in:
Clément Foucault 2018-03-07 01:36:09 +01:00
parent aa07660201
commit cfba75a21a
1 changed files with 6 additions and 0 deletions
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6
source/blender/blenlib/intern/rand.c
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@ -386,6 +386,8 @@ void BLI_halton_1D(unsigned int prime, double offset, int n, double *r)
{
const double invprime = 1.0 / (double)prime;
*r = 0.0;
for (int s = 0; s < n; s++) {
*r = halton_ex(invprime, &offset);
}
@ -395,6 +397,8 @@ void BLI_halton_2D(unsigned int prime[2], double offset[2], int n, double *r)
{
const double invprimes[2] = {1.0 / (double)prime[0], 1.0 / (double)prime[1]};
r[0] = r[1] = 0.0;
for (int s = 0; s < n; s++) {
for (int i = 0; i < 2; i++) {
r[i] = halton_ex(invprimes[i], &offset[i]);
@ -406,6 +410,8 @@ void BLI_halton_3D(unsigned int prime[3], double offset[3], int n, double *r)
{
const double invprimes[3] = {1.0 / (double)prime[0], 1.0 / (double)prime[1], 1.0 / (double)prime[2]};
r[0] = r[1] = r[2] = 0.0;
for (int s = 0; s < n; s++) {
for (int i = 0; i < 3; i++) {
r[i] = halton_ex(invprimes[i], &offset[i]);