mirror of https://github.com/ZDoom/raze-gles.git
294 lines
8.1 KiB
Lua
294 lines
8.1 KiB
Lua
--[[
|
|
Usage: in Mapster32,
|
|
> lua "shadexfog=reload'shadexfog'"
|
|
-- for example
|
|
> lua "shadexfog.create(100, 63,63,63)"
|
|
> lua "shadexfog.translate(100, 2)"
|
|
In EDuke32, simply pass this module at the command line.
|
|
--]]
|
|
|
|
local error = error
|
|
|
|
local math = require("math")
|
|
local min, max = math.min, math.max
|
|
local floor = math.floor
|
|
|
|
local sector, wall, sprite = sector, wall, sprite
|
|
|
|
local engine = require("engine")
|
|
local gv = gv
|
|
|
|
----------
|
|
|
|
local shadexfog = {}
|
|
|
|
-- Create 32 palookups corrensponding to different *shade levels* of a fog
|
|
-- palookup, called a "shade-x-fog" palookup set in the following.
|
|
--
|
|
-- Pals <tartpalnum> .. <startpalnum>+31 will be taken.
|
|
-- <fogr>, <fogg>, <fogb>: intensities of the fog color, [0 ..63]
|
|
function shadexfog.create(startpalnum, fogr, fogg, fogb)
|
|
local MAXPALNUM = 255-31-engine.RESERVEDPALS
|
|
if (not (startpalnum >= 1 and startpalnum <= MAXPALNUM)) then
|
|
error("invalid startpalnum, max="..MAXPALNUM, 2)
|
|
end
|
|
|
|
local basesht = engine.getshadetab(0)
|
|
|
|
-- Encode the shade in different pal numbers! The shade tables are
|
|
-- constructed with a fog in their place.
|
|
for dummyshade=1,31 do
|
|
local sht = engine.shadetab()
|
|
|
|
for f=0,31 do
|
|
for i=0,255 do
|
|
local r, g, b = engine.getrgb(basesht[dummyshade][i])
|
|
|
|
local nr, ng, nb =
|
|
(r*(32-f) + fogr*f) / 32,
|
|
(g*(32-f) + fogg*f) / 32,
|
|
(b*(32-f) + fogb*f) / 32
|
|
|
|
sht[f][i] = engine.nearcolor(nr, ng, nb)
|
|
end
|
|
end
|
|
|
|
engine.setshadetab(startpalnum + dummyshade, sht)
|
|
end
|
|
end
|
|
|
|
local function trans(what, startpalnum, fogintensity)
|
|
local shade = min(max(what.shade, 0), 31)
|
|
what.pal = startpalnum + shade
|
|
what.shade = fogintensity
|
|
end
|
|
|
|
-- shadexfog.translate(startpalnum, fogintensity [, vis])
|
|
--
|
|
-- Translate the whole map for use with a shade-x-fog palookup set.
|
|
-- .pal becomes the <startpalnum> + former .shade
|
|
-- .shade becomes the <fogintensity> [0 .. 31]
|
|
-- If <vis> is passed, set all sector's visibility to that value.
|
|
--
|
|
-- Notes:
|
|
-- - works only a single time (TODO: autodetection if already applied)
|
|
-- - if shades < 0 or > 31 present, loss of information
|
|
function shadexfog.translate(startpalnum, fogintensity, vis)
|
|
for i=0,gv.numsectors-1 do
|
|
trans(sector[i].ceiling, startpalnum, fogintensity)
|
|
trans(sector[i].floor, startpalnum, fogintensity)
|
|
if (vis) then
|
|
sector[i].visibility = vis
|
|
end
|
|
end
|
|
|
|
for i=0,gv.numwalls-1 do
|
|
trans(wall[i], startpalnum, fogintensity)
|
|
end
|
|
end
|
|
|
|
if (gv.LUNATIC_CLIENT == gv.LUNATIC_CLIENT_EDUKE32 and LUNATIC_FIRST_TIME) then
|
|
shadexfog.create(100, 63,63,63)
|
|
print("created shadexfog palookups")
|
|
end
|
|
|
|
---------- BASE SHADE TABLE TESTS ----------
|
|
|
|
-- Basic test of whether for a color index i corresponding to a color (r,g,b),
|
|
-- getclosestcol() returns a color index ii corresponding to the same color.
|
|
-- (In the Duke3D palette, there are duplicates, so the requirement i==ii is
|
|
-- too strict.)
|
|
function shadexfog.test_nearcolor()
|
|
for i=0,255 do
|
|
local r, g, b = engine.getrgb(i)
|
|
local ii = engine.nearcolor(r, g, b)
|
|
local rr, gg, bb = engine.getrgb(ii)
|
|
|
|
if (r~=rr or g~=gg or b~=bb) then
|
|
printf("diff %d: %d,%d,%d %d,%d,%d", i, r,g,b, rr,gg,bb)
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Change the .pal member of all sector ceilings/floors, walls and sprites to
|
|
-- <pal>.
|
|
function shadexfog.challpal(palnum)
|
|
for i=0,gv.numsectors-1 do
|
|
sector[i].ceilingpal = palnum
|
|
sector[i].floorpal = palnum
|
|
end
|
|
for i=0,gv.numwalls-1 do
|
|
wall[i].pal = palnum
|
|
end
|
|
for i in sprite.all() do
|
|
sprite[i].pal = palnum
|
|
end
|
|
end
|
|
|
|
-- Create our version of the base shade table (palookup 0)
|
|
--
|
|
-- NOTE: Nope, the base shade table is NOT created by applying a linear ramp to
|
|
-- the base palette colors!!!
|
|
local function create_base_shtab(basesht)
|
|
local basesht = basesht or engine.getshadetab(0)
|
|
|
|
local sht = engine.shadetab()
|
|
sht[0] = basesht[0]
|
|
for sh=1,31 do
|
|
for i=0,255-16 do
|
|
-- NOTE that this fails, see BASESHT_0_NOT_IDENTITY:
|
|
-- assert(basesht[0][i] == i)
|
|
local r, g, b = engine.getrgb(i)
|
|
local f = 1
|
|
r = ((32-f*sh+0.5)*r)/32
|
|
g = ((32-f*sh+0.5)*g)/32
|
|
b = ((32-f*sh+0.5)*b)/32
|
|
r, g, b = max(0,r), max(0,g), max(0,b) -- if f is > 1
|
|
sht[sh][i] = engine.nearcolor(r, g, b)
|
|
end
|
|
|
|
for i=255-16+1,255 do
|
|
-- fullbrights
|
|
sht[sh][i] = basesht[0][i]
|
|
end
|
|
end
|
|
|
|
return sht
|
|
end
|
|
|
|
local function create_base_shtab_2(basesht)
|
|
local basesht = basesht or engine.getshadetab(0)
|
|
|
|
local perm16 = { [0]=0,1, 2,3, 5,4, 6,7, 8,13, 10,11, 12,9, 14,15 }
|
|
basesht = basesht:remap16(perm16)
|
|
|
|
local iperm16 = {}
|
|
for i=0,15 do
|
|
iperm16[perm16[i]] = i
|
|
end
|
|
|
|
local iperm = {}
|
|
for i=0,255 do
|
|
iperm[i] = 16*(iperm16[floor(i/16)]) + i%16
|
|
end
|
|
|
|
local baseidx = {}
|
|
for i=0,255-16 do
|
|
baseidx[i] = i < 192 and 32*floor(i/32) or 16*floor(i/16)
|
|
end
|
|
|
|
local sht = engine.shadetab()
|
|
|
|
for sh=0,31 do
|
|
for i=0,255-16 do
|
|
local bi = baseidx[i]
|
|
local cidx = bi + floor(((31-sh)*(i - bi))/31)
|
|
sht[sh][i] = iperm[cidx]
|
|
end
|
|
|
|
for i=255-16+1,255 do
|
|
-- fullbrights
|
|
sht[sh][i] = basesht[0][i]
|
|
end
|
|
end
|
|
|
|
return sht:remap16(iperm16)
|
|
end
|
|
|
|
if (gv.LUNATIC_CLIENT == gv.LUNATIC_CLIENT_MAPSTER32) then
|
|
-- Wrapper around engine.savePaletteDat() that errors on unexpected events.
|
|
function shadexfog.save(filename, palnum, blendnum, moreblends)
|
|
local ok, errmsg = engine.savePaletteDat(filename, palnum, blendnum, moreblends)
|
|
if (not ok) then
|
|
error(errmsg)
|
|
end
|
|
|
|
printf('Wrote base palette, shade and translucency tables to "%s".', filename)
|
|
if (moreblends ~= nil) then
|
|
printf(" Also wrote additional translucency tables.")
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Create our (failed) version of the base shade table at set it to palookup
|
|
-- number <palnum>.
|
|
-- <secver>: use second attempt?
|
|
function shadexfog.create0(palnum, secver)
|
|
local sht0 = secver and create_base_shtab_2() or create_base_shtab()
|
|
engine.setshadetab(palnum, sht0)
|
|
end
|
|
|
|
function shadexfog.test_create0()
|
|
local basesht = engine.getshadetab(0)
|
|
|
|
for i=0,255 do
|
|
if (basesht[0][i] ~= i) then
|
|
-- BASESHT_0_NOT_IDENTITY
|
|
printf("Base shade table at index %d: %d", i, basesht[0][i])
|
|
end
|
|
end
|
|
|
|
local sht = create_base_shtab(basesht)
|
|
|
|
local ok = true
|
|
for sh=1,31 do
|
|
for i=0,255 do
|
|
local ouri, origi = sht[sh][i], basesht[sh][i]
|
|
-- if (sht[sh][i] ~= basesht[sh][i]) then
|
|
if (math.abs(ouri - origi) > 1) then
|
|
printf("Constructed shade table DIFFERS AT shade %d index %d: orig %d ours %d",
|
|
sh, i, basesht[sh][i], sht[sh][i])
|
|
ok = false
|
|
goto out
|
|
end
|
|
end
|
|
end
|
|
|
|
::out::
|
|
if (ok) then
|
|
printf("Constructed shade table IDENTICAL WITH original one")
|
|
end
|
|
end
|
|
|
|
---------- Blending table tests ----------
|
|
|
|
function shadexfog.create_128_trans(startblendidx)
|
|
for alpha=1,128 do
|
|
local f = alpha/256
|
|
local F = 1-f
|
|
|
|
local tab = engine.blendtab()
|
|
|
|
for i=0,255 do
|
|
for j=0,255 do
|
|
local r,g,b = engine.getrgb(i)
|
|
local R,G,B = engine.getrgb(j)
|
|
|
|
tab[i][j] = engine.nearcolor(f*r+F*R, f*g+F*G, f*b+F*B)
|
|
end
|
|
end
|
|
|
|
engine.setblendtab(startblendidx + alpha-1, tab)
|
|
end
|
|
end
|
|
|
|
function shadexfog.create_additive_trans(blendidx)
|
|
local tab = engine.blendtab()
|
|
|
|
for i=0,255 do
|
|
for j=0,255 do
|
|
local r,g,b = engine.getrgb(i)
|
|
local R,G,B = engine.getrgb(j)
|
|
|
|
tab[i][j] = engine.nearcolor(min(r+R, 63), min(g+G, 63), min(b+B, 63), 255-16)
|
|
end
|
|
end
|
|
|
|
engine.setblendtab(blendidx, tab)
|
|
end
|
|
|
|
|
|
do
|
|
return shadexfog
|
|
end
|