Glossary: Difference between revisions

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m (→‎Graphics: Simplify Tilemap)
(→‎Graphics: CHR, raster, scanline)
Line 5: Line 5:
; CGRAM
; CGRAM
: 256 15-bit words of memory located in the PPU that holds the palette data.
: 256 15-bit words of memory located in the PPU that holds the palette data.
; CHR
; Character
; Character
: Another word for tile.
: Another word for tile.
Line 16: Line 17:
; [[Palettes|Palette]]
; [[Palettes|Palette]]
: A color lookup table.
: A color lookup table.
; Raster
: A horizontal line of the output picture. (Also: scanline)
; Scanline
: A horizontal line of the output picture. (Also: raster)
; Sliver
; Sliver
: An 8x1 segment of a tile.
: An 8x1 pixel segment of a tile.
; [[Sprites|Sprite]]
; [[Sprites|Sprite]]
: A 16-colour (4bpp) tile that can be drawn anywhere on the screen.
: A 16-colour (4bpp) tile that can be drawn anywhere on the screen.

Revision as of 18:48, 15 July 2022

Graphics

Background
A grid-based layer containing a tileset, one or more tilemaps, a scroll offset and other attributes.
CGRAM
256 15-bit words of memory located in the PPU that holds the palette data.
CHR
Character
Another word for tile.
Nametable
Another word for tilemap.
Object
Nintendo's term for Sprite.
OAM
Object Attribute Memory
544 bytes of memory located in the PPU that holds the sprite table.
Palette
A color lookup table.
Raster
A horizontal line of the output picture. (Also: scanline)
Scanline
A horizontal line of the output picture. (Also: raster)
Sliver
An 8x1 pixel segment of a tile.
Sprite
A 16-colour (4bpp) tile that can be drawn anywhere on the screen.
Tile
A small square graphic.
SNES tiles are 8x8 pixels in size and are stored in a variety of formats in VRAM. Adjacent tiles can be combined to create larger tiles for backgrounds and sprites.
Tilemap
A grid (in VRAM) that describe which tiles and palettes to draw for a background layer.
Mode 7 Tilemap
A 128x128 grid of 8-bit tile indexes for the Mode-7 background (in VRAM).
Tilemap Entry
A 16 bit word containing the tile index, flip, palette index and priority.
PPU
Picture Processing Unit
Generates video output from VRAM, CGRAM and OAM memory.
VRAM
Video-RAM. The SNES has 2x 32KiB Video-RAM chips (64KiB total VRAM).
The VRAM holds tile data, tilemap data and offset-per-tile data