oss/luanti
oss/luanti
1
0
Fork 0
mirror of https://github.com/luanti-org/luanti.git synced 2025-06-27 16:36:03 +00:00
Code Wiki Activity

Update light decoding table size (#6696)

Browse source 
Fix old undiminish_light bug
This commit is contained in:
Vitaliy 2017-12-12 21:29:55 +03:00 • committed by SmallJoker
parent b19241b9bc
commit 2d9f0d344e
2 changed files with 12 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

10
src/light.cpp
View file

@ -24,9 +24,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#ifndef SERVER
// Length of LIGHT_MAX + 1 means LIGHT_MAX is the last value.
// LIGHT_SUN is read as LIGHT_MAX from here.
u8 light_LUT[LIGHT_MAX + 1];
static u8 light_LUT[LIGHT_SUN + 1];
// The const ref to light_LUT is what is actually used in the code
const u8 *light_decode_table = light_LUT;
@ -48,9 +46,9 @@ void set_light_table(float gamma)
// Gamma correction
gamma = rangelim(gamma, 0.5f, 3.0f);
for (size_t i = 0; i < LIGHT_MAX; i++) {
for (size_t i = 0; i < LIGHT_SUN; i++) {
float x = i;
x /= LIGHT_MAX;
x /= LIGHT_SUN;
float brightness = a * x * x * x + b * x * x + c * x;
float boost = d * std::exp(-((x - e) * (x - e)) / (2.0f * f * f));
brightness = powf(brightness + boost, 1.0f / gamma);
@ -58,6 +56,6 @@ void set_light_table(float gamma)
if (i > 1 && light_LUT[i] <= light_LUT[i - 1])
light_LUT[i] = light_LUT[i - 1] + 1;
}
light_LUT[LIGHT_MAX] = 255;
light_LUT[LIGHT_SUN] = 255;
}
#endif