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Render preview banners with transparent patterns correctly 

Without this fix, the banner pattern preview generation does not mask
the banner pattern, so the alpha channel of the banner pattern is not
taken into account. This lead to preview banners with color gradients
showing up as a solid color banner and opaque pixel artifacts for the
bottom triangle pattern.
This commit is contained in:
Nils Dagsson Moskopp 2021-05-15 22:16:12 +02:00
parent 07a59ef120
commit f410de485a
Signed by untrusted user who does not match committer: erle
GPG Key ID: A3BC671C35191080
1 changed files with 4 additions and 2 deletions
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6
mods/ITEMS/mcl_banners/init.lua
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@ -387,13 +387,15 @@ for colorid, colortab in pairs(mcl_banners.colors) do
-- redraw the pattern textures as low-resolution pixel -- redraw the pattern textures as low-resolution pixel
-- art and use that instead. -- art and use that instead.
local layer = "(([combine:20x40:-2,-2="..pattern.."^[resize:16x24^[colorize:"..color..":"..layer_ratio.."))" local layer = "([combine:20x40:-2,-2=" .. pattern .. "^[resize:16x24^[colorize:" .. color .. ":" .. layer_ratio .. ")"
local mask = "([combine:20x40:-2,-2=" .. pattern .. "^[resize:16x24" .. ")"
function escape(text) function escape(text)
return text:gsub("%^", "\\%^"):gsub(":", "\\:") -- :gsub("%(", "\\%("):gsub("%)", "\\%)") return text:gsub("%^", "\\%^"):gsub(":", "\\:") -- :gsub("%(", "\\%("):gsub("%)", "\\%)")
end end
finished_banner = "[combine:32x32:0,0=" .. escape(base) .. ":8,4=" .. escape(layer) local layer_masked = layer .. "^[mask:" .. escape(mask)
finished_banner = "[combine:32x32:0,0=" .. escape(base) .. ":8,4=" .. escape(layer_masked)
end end
inv = finished_banner inv = finished_banner