29 lines
916 B
Lua
29 lines
916 B
Lua
-----------------------
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-- Name: NTSC Safe Area
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-- Author: Sour
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-----------------------
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-- Displays an overlay based on tepples' "Safe Area on 5.37Mhz NTSC VDPs" diagram
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-- Source: https://wiki.nesdev.com/w/index.php/File:Safe_areas.png
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--
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-- Red: "Danger Zone" (Top and bottom 8 pixels)
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-- Most TVs hide all of this.
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--
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-- Gray: Outside the "Title Safe Area".
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-- Some TVs may hide portions of this.
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-- Text, etc. should not appear here.
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-----------------------
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function drawSafeArea()
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local red = 0x40FF0000;
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local gray = 0x60505050;
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emu.drawRectangle(0, 0, 256, 8, red, true)
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emu.drawRectangle(0, 232, 256, 8, red, true)
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emu.drawRectangle(0, 8, 16, 224, gray, true)
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emu.drawRectangle(240, 8, 16, 224, gray, true)
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emu.drawRectangle(16, 8, 224, 16, gray, true)
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emu.drawRectangle(16, 216, 224, 16, gray, true)
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end
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emu.addEventCallback(drawSafeArea, emu.eventType.endFrame);
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