Background: Difference between revisions

Revision as of 16:55, 20 July 2023

A Background is a layer of tiles, mapped and possibly scrolled, that usually appears behind the sprite layer. The SNES supports up to four simultaneous backgrounds, conventionally named:

throughout the official Super Nintendo development manual. The following table describes which background layers support which capabilities in the various background modes. For an explanation of what the enclosed numerics on the right mean, see the legend below (if a layer does not support that function, the cell is left blank).

Mode	# of Layers Displayed	Layer	# of Tile Dots	# of Tile Colors	# of Palettes	# of Colors Per Layer	Function
0	max 4	BG1	8x8	4	8	32	①	②	③		⑤	⑥	⑦	⑧		⑩
		BG2	or	4	8	32	①	②	③		⑤	⑥	⑦	⑧		⑩
		BG3	16x16	4	8	32	①	②	③		⑤	⑥	⑦	⑧		⑩
		BG4		4	8	32	①	②	③		⑤	⑥	⑦	⑧		⑩
1	max 3	BG1		16	8	128	①	②	③		⑤	⑥	⑦	⑧		⑩
		BG2		16	8	128	①	②	③		⑤	⑥	⑦	⑧		⑩
		BG3		4	8	32	①	②	③		⑤	⑥	⑦	⑧		⑩
2	max 2	BG1		16	8	128	①	②	③		⑤	⑥	⑦	⑧		⑩	⑪
		BG2		16	8	128	①	②	③		⑤	⑥	⑦	⑧		⑩	⑪
3	max 2	BG1		256	1	256	①	②	③		⑤	⑥	⑦	⑧	⑨	⑩
		BG2		16	8	128	①	②	③		⑤	⑥	⑦	⑧		⑩
4	max 2	BG1		256	1	256	①	②	③		⑤	⑥	⑦	⑧	⑨	⑩	⑪
		BG2		4	8	32	①	②	③		⑤	⑥	⑦	⑧		⑩	⑪
5	max 2	BG1		16	8	128	①	②	③		⑤		⑦	⑧				⑫
		BG2		4	8	32	①	②	③		⑤		⑦	⑧				⑫
6	1	BG1	16x8	16	8	128	①	②	③		⑤		⑦	⑧			⑪	⑫
7	1	BG1	8x8	256	1	256	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
EXT BG	1	BG1	8x8	128	1	128	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩

Legend

① Horizontal/Vertical Scrolling (each layer)

② Horizontal/Vertical Flip (each tile)

③ Mosaic

④ Rotate, Enlarge, Shrink

⑤ Window Mask

⑥ Screen Addition/Subtraction

⑦ Fixed Color Addition/Subtraction

⑧ Color Window

⑨ Direct Color

⑩ Horizontal Pseudo 512

⑪ Offset Change Mode

⑫ Horizontal 512 Mode

Reference

Appendix A-5 of Book I of the official Super Nintendo development manual

Revision as of 16:50, 20 July 2023 (view source) Xetheria (talk \| contribs) (these are all numerics) ← Older edit		Revision as of 16:55, 20 July 2023 (view source) Xetheria (talk \| contribs) (BG3 High Priority appears above sprite layer) Newer edit →
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	A '''Background''' is a layer of tiles, mapped and possibly scrolled, that appears behind the [[sprite]] layer. The SNES supports up to four simultaneous backgrounds, conventionally named:		A '''Background''' is a layer of tiles, mapped and possibly scrolled, that usually appears behind the [[sprite]] layer. The SNES supports up to four simultaneous backgrounds, conventionally named:

	* [[BG1]]		* [[BG1]]