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Differential D1453 Diff 4827 intern/cycles/render/film.cpp

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intern/cycles/render/film.cpp

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} }
static float filter_func_gaussian(float v, float width) static float filter_func_gaussian(float v, float width)
{ {
v *= 2.0f/width; v *= 2.0f/width;
return expf(-2.0f*v*v); return expf(-2.0f*v*v);
} }
static float filter_func_blackman_harris(float v, float width)
{
v = M_2PI_F * (v / width + 0.5f);
return 0.35875f - 0.48829f*cosf(v) + 0.14128f*cosf(2.0f*v) - 0.01168f*cosf(3.0f*v);
}
static vector<float> filter_table(FilterType type, float width) static vector<float> filter_table(FilterType type, float width)
{ {
const int filter_table_size = FILTER_TABLE_SIZE-1; const int filter_table_size = FILTER_TABLE_SIZE-1;
vector<float> filter_table_cdf(filter_table_size+1); vector<float> filter_table_cdf(filter_table_size+1);
vector<float> filter_table(filter_table_size+1); vector<float> filter_table(filter_table_size+1);
float (*filter_func)(float, float) = NULL; float (*filter_func)(float, float) = NULL;
int i, half_size = filter_table_size/2; int i, half_size = filter_table_size/2;
switch(type) { switch(type) {
case FILTER_BOX: case FILTER_BOX:
filter_func = filter_func_box; filter_func = filter_func_box;
break; break;
case FILTER_GAUSSIAN: case FILTER_GAUSSIAN:
filter_func = filter_func_gaussian; filter_func = filter_func_gaussian;
break; break;
case FILTER_BLACKMAN_HARRIS:
filter_func = filter_func_blackman_harris;
width *= 2.0f;
sergeyUnsubmitted
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Isn't this something we can compensate in the filter function?

sergey: Isn't this something we can compensate in the filter function?
lukasstockner97AuthorUnsubmitted
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We could, but it's also used below (line 264), so it'd need an additional condition down there.

lukasstockner97: We could, but it's also used below (line 264), so it'd need an additional condition down there.
break;
default: default:
assert(0); assert(0);
} }
/* compute cumulative distribution function */ /* compute cumulative distribution function */
filter_table_cdf[0] = 0.0f; filter_table_cdf[0] = 0.0f;
for(i = 0; i < filter_table_size; i++) { for(i = 0; i < filter_table_size; i++) {
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