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Optimizes lighting overlays for slow clients.

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Ports https://github.com/tgstation/tgstation/pull/25778 and https://github.com/tgstation/tgstation/pull/25861
* Instead of using color matrix for all overlays, fully dark and fully light use static black and transparant icon states without color matrix.
* Also implements LIGHTING_ROUND_VALUE so that lighting values actually will reach 0 or 1.
This commit is contained in:
Leshana
2017-04-11 22:23:16 -04:00
parent f2956464b8
commit 5f629e2aca
4 changed files with 58 additions and 14 deletions
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18
code/modules/lighting/lighting_corner.dm
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@@ -98,20 +98,28 @@
lighting_update_corners += src
/datum/lighting_corner/proc/update_overlays()
// Cache these values a head of time so 4 individual lighting overlays don't all calculate them individually.
var/lum_r = src.lum_r
var/lum_g = src.lum_g
var/lum_b = src.lum_b
var/mx = max(lum_r, lum_g, lum_b) // Scale it so 1 is the strongest lum, if it is above 1.
. = 1 // factor
if (mx > 1)
. = 1 / mx
#if LIGHTING_SOFT_THRESHOLD != 0
else if (mx < LIGHTING_SOFT_THRESHOLD)
. = 0 // 0 means soft lighting.
cache_r = lum_r * . || LIGHTING_SOFT_THRESHOLD
cache_g = lum_g * . || LIGHTING_SOFT_THRESHOLD
cache_b = lum_b * . || LIGHTING_SOFT_THRESHOLD
cache_mx = mx
cache_r = round(lum_r * ., LIGHTING_ROUND_VALUE) || LIGHTING_SOFT_THRESHOLD
cache_g = round(lum_g * ., LIGHTING_ROUND_VALUE) || LIGHTING_SOFT_THRESHOLD
cache_b = round(lum_b * ., LIGHTING_ROUND_VALUE) || LIGHTING_SOFT_THRESHOLD
#else
cache_r = round(lum_r * ., LIGHTING_ROUND_VALUE)
cache_g = round(lum_g * ., LIGHTING_ROUND_VALUE)
cache_b = round(lum_b * ., LIGHTING_ROUND_VALUE)
#endif
cache_mx = round(mx, LIGHTING_ROUND_VALUE)
for (var/TT in masters)
var/turf/T = TT