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Add embedded PNG texture modifier (#11498)

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hecks 2021-10-13 17:51:37 +02:00 • committed by GitHub
parent fe5cb2cdfb
commit 02292e03e4
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3 changed files with 126 additions and 35 deletions
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31
games/devtest/mods/testnodes/textures.lua
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@ -102,12 +102,22 @@ local function gen_checkers(w, h, tile)
end
local fractal = mandelbrot(512, 512, 128)
local frac_emb = mandelbrot(64, 64, 64)
local checker = gen_checkers(512, 512, 32)
local floor = math.floor
local abs = math.abs
local data_emb = {}
local data_mb = {}
local data_ck = {}
for i=1, #frac_emb do
data_emb[i] = {
r = floor(abs(frac_emb[i] * 2 - 1) * 255),
g = floor(abs(1 - frac_emb[i]) * 255),
b = floor(frac_emb[i] * 255),
a = frac_emb[i] < 0.95 and 255 or 0,
}
end
for i=1, #fractal do
data_mb[i] = {
r = floor(fractal[i] * 255),
@ -140,3 +150,24 @@ minetest.register_node("testnodes:generated_png_ck", {
groups = { dig_immediate = 2 },
})
local png_emb = "[png:" .. minetest.encode_base64(minetest.encode_png(64,64,data_emb))
minetest.register_node("testnodes:generated_png_emb", {
description = S("Generated In-Band Mandelbrot PNG Test Node"),
tiles = { png_emb },
groups = { dig_immediate = 2 },
})
minetest.register_node("testnodes:generated_png_src_emb", {
description = S("Generated In-Band Source Blit Mandelbrot PNG Test Node"),
tiles = { png_emb .. "^testnodes_damage_neg.png" },
groups = { dig_immediate = 2 },
})
minetest.register_node("testnodes:generated_png_dst_emb", {
description = S("Generated In-Band Dest Blit Mandelbrot PNG Test Node"),
tiles = { "testnodes_generated_ck.png^" .. png_emb },
groups = { dig_immediate = 2 },
})