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28 lines
751 B
Lua
28 lines
751 B
Lua
local ROOT = (...):gsub('[^.]*$', '')
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local Backend
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if _G.love and (_G.love._version_major or _G.love._version_minor) then
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Backend = require(ROOT .. 'backend.love')
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else
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Backend = require(ROOT .. 'backend.ffisdl')
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end
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Backend.intersectScissor = Backend.intersectScissor or function (x, y, w, h)
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local sx, sy, sw, sh = Backend.getScissor()
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if not sx then
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return Backend.setScissor(x, y, w, h)
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end
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local x1 = math.max(sx, x)
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local y1 = math.max(sy, y)
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local x2 = math.min(sx + sw, x + w)
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local y2 = math.min(sy + sh, y + h)
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if x2 > x1 and y2 > y1 then
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Backend.setScissor(x1, y1, x2 - x1, y2 - y1)
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else
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-- HACK
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Backend.setScissor(-100, -100, 1, 1)
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end
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end
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return Backend
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