Editing GPU

== Overview ==
'''32-bit Sony GPU (designed by Toshiba)'''
* Handles display of graphics, control of framebuffer, and drawing of polygons and textures
* Handles 2D graphics processing, in a similar manner to the 3D engine
* RAM:
** 1&nbsp;MB VRAM (later models used SGRAM) for framebuffer
** 2&nbsp;KB texture cache (132&nbsp;MB/s memory bus bandwidth, 32-bit wide)
** 64 bytes FIFO buffer
* Features:
** Adjustable framebuffer (1024×512)
** Emulation of simultaneous backgrounds (to simulate parallax scrolling)
** Mask bit
** Texture window
** Dithering
** Clipping
** Alpha blending (4 per-texel alpha blending modes)
** Fog
** Framebuffer effects
** Transparency effects
** Render to texture
** Offscreen rendering
** Multipass rendering
** Flat or Gouraud shading and texture mapping
** No line restriction
** Colored light sourcing
* Resolutions:
** Progressive: 256×224 to 640×240 pixels
** Interlaced: 256×448 to 640×480 pixels
* Colors:
** Maximum color depth of 16,777,216 colors (24-bit true color)
** 57,344 (256×224) to 153,600 (640×240) colors on screen
** Unlimited color lookup tables (CLUTs)
** 32 levels of transparency
** All calculations are performed to 24 bit accuracy
* Texture mapping color mode:
** Mode 4: 4-bit CLUT (16 colors)
** Mode 8: 8-bit CLUT (256 colors)
** Mode 15: 15-bit direct (32,768 colors)
** Mode 24: 24-bit (16,777,216 colors)
* Sprite engine:
** 1024×512 framebuffer, 8×8 and 16×16 sprite sizes, bitmap objects
** Up to 4,000 sprites on screen (at 8×8 sprite size), scaling and rotation
** 256×256 maximum sprite size
* Special sprite effects:
** Rotation
** Scaling up/down
** Warping
** Transparency
** Fading
** Priority
** Vertical and horizontal line scroll

== Revisions ==
=== CXD8514 ===
* CXD8514Q
** Found on PU-7 and on early PU-8 (until -12)
** First revision to be sold to consumers

=== CXD8561 ===
* CXD8561Q
** Found on some PU-8 (-21 and onwards)
** This version and all versions onwards use SGRAM for video memory
** Supports 8-bit shading and full-screen dithering, thus less color banding in games
** Some performance improvements
* CXD8561AQ
** Found on some PU-20 and some PU-22
* CXD8561BQ
** Found on some PU-16, PU-18 and PU-20
** Die size: 54 mm²
* CXD8561CQ
** Found on some PU-22, PU-23 and PM-41 (until -51)
** Die size: 54 mm² (thus not shrunk compared to the previous revision)

=== CXD9500 ===
* CXD9500Q
** Found on some PM-41 (-61 onwards)
** SGRAM integrated into GPU