Editing Planar (computer graphics) (section)

== Examples ==
On a [[Packed pixel|chunky]] display with 4-[[bits-per-pixel]] and a [[List of monochrome and RGB color formats#4-bit RGBI|RGBI]] palette, each byte represents two pixels, with 16 different colors available for each pixel. Four consecutive pixels are stored in two consecutive bytes as follows:

{|class="wikitable"
! Byte index || colspan=2 | 0 || colspan=2| 1
|-
| Byte value (decimal) || colspan=2 | 1 || colspan=2 | 35
|-
| Byte value (hexadecimal) || colspan=2 | 0x01 || colspan=2 | 0x23
|-
| Nibble value (binary) || 0000 || 0001 || 0010 || 0011
|-
| Nibble value (decimal) || 0 || 1 || 2 || 3
|-
| Resulting pixel
|style="background-color: #000000; color: white;"| Black
|style="background-color: #0000AA; color: white;"| Blue
|style="background-color: #00AA00; color: white;"| Green
|style="background-color: #00AAAA; color: white;"| Cyan
|}

Whereas a planar scheme could use 2 bitplanes, providing for a 4 color display. Eight pixels would be stored as 2 bytes non-contiguously in memory:

{|class="wikitable"
! Byte index ||colspan=8| 0 ||colspan=2| Byte value
|-
! Bit index || 0 || 1 || 2 || 3 || 4 || 5 || 6 || 7 || hexadecimal || decimal
|-
| Plane 0 || 0 || 1 || 0 || 1 || 0 || 0 || 0 || 0 || style="text-align: center;" | 0x50 || style="text-align: center;" | 80
|-
| Plane 1 || 0 || 0 || 1 || 1 || 0 || 0 || 0 || 0 || style="text-align: center;" | 0x30 || style="text-align: center;" | 48
|-
| Resulting pixel
|style="background-color: #000000; color: white;"| 0
|style="background-color: #0000AA; color: white;"| 1
|style="background-color: #00AA00; color: white;"| 2
|style="background-color: #00AAAA; color: white;"| 3
|style="background-color: #000000; color: white;"| 0
|style="background-color: #000000; color: white;"| 0
|style="background-color: #000000; color: white;"| 0
|style="background-color: #000000; color: white;"| 0
|}

In the planar example, 2 bytes represent 8 pixels with 4 available colors, where the packed pixel example uses 2 bytes to represent fewer pixels but with more colors. Adding planes will increase the number of colors available at the cost of requiring more memory. For example, using 4 planes makes 2<sup>4</sup>=16 colors available, but it would then take 4 bytes to represent 8 pixels (making it equivalent in terms of memory usage and available colors to the packed arrangement example).