Render Target.bit

package:application/vnd.bitty-archive;
data:text/json;count=149;path=info.json;
{
  "id": 0,
  "title": "Basics/10. Render Target",
  "description": "",
  "author": "Tony",
  "version": "1.0",
  "genre": "TUTORIAL",
  "url": ""
}
data:text/lua;count=851;path=main.lua;
--[[
Example for the Bitty Engine

Copyright (C) 2020 - 2024 Tony Wang, all rights reserved

Homepage: https://paladin-t.github.io/bitty/
]]

local tex_ = nil

function setup()
	tex_ = Resources.load({ width = 128, height = 128 }) -- Load a dynamic texture.
	Resources.wait(tex_)

	Canvas.main.target = tex_ -- Use the texture as render target.
	cls(Color.new(100, 200, 80)) -- Clear the render target with a specific color.
	text('This is a', 10, 0) -- Draw something.
	text('render target.', 10, 16)

	Canvas.main.target = nil -- Restore the render target to the main canvas.
	cls(Color.new(30, 30, 30)) -- Restore the clear color.

	sync()

	Resources.collect()
end

function update(delta)
	local canvasWidth, canvasHeight = Canvas.main:size()
	local x, y = (canvasWidth - tex_.width) * 0.5, (canvasHeight - tex_.height) * 0.5
	tex(tex_, x, y)
end