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minor change to r47872, multiply both values as unsigned ints before converting to float.

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Campbell Barton
2012-06-14 10:03:23 +00:00
parent 4f607bf162
commit 47950325a4
1 changed files with 4 additions and 4 deletions
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8
source/blender/compositor/operations/COM_GlareFogGlowOperation.cpp
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@@ -382,14 +382,14 @@ void GlareFogGlowOperation::generateGlare(float *data, MemoryBuffer *inputTile,
BLI_init_rcti(&kernelRect, 0, sz, 0, sz);
ckrn = new MemoryBuffer(NULL, &kernelRect);
scale = 0.25f * sqrtf((float)sz * sz);
scale = 0.25f * sqrtf((float)(sz * sz));
for (y = 0; y < sz; ++y) {
v = 2.f * (y / (float)sz) - 1.f;
v = 2.f * (y / (float)sz) - 1.0f;
for (x = 0; x < sz; ++x) {
u = 2.f * (x / (float)sz) - 1.f;
u = 2.f * (x / (float)sz) - 1.0f;
r = (u * u + v * v) * scale;
d = -sqrtf(sqrtf(sqrtf(r))) * 9.f;
d = -sqrtf(sqrtf(sqrtf(r))) * 9.0f;
fcol[0] = expf(d * cs_r), fcol[1] = expf(d * cs_g), fcol[2] = expf(d * cs_b);
// linear window good enough here, visual result counts, not scientific analysis
//w = (1.f-fabs(u))*(1.f-fabs(v));