6.5.3.1 Composition 2D Hardware Features
The features of the dedicated 2D unit are provided in the following table:
| Feature | Support |
|---|---|
| Programmable OPs | ROP2, ROP3, ROP4 full alpha blending and transparency |
| Fixed function | Rectangle fill, Rectangle Clear, Bit blit, Stretch blit, Filter blit |
| Blit support | Copy (Bit), Filter, Stretch/Shrink |
| Source and Destination formats | Refer to Data Formats Support for details. |
| Multiple Source support | Up to 8 sources |
| Alpha blending modes | Java2 Porter-Duff, Chroma Key, Pattern Mask |
| Alpha blending during filter blit | Supported |
| Transparency | Supported by monochrome mask, chroma key, or pattern mask |
| Dithering | 2D dither support |
| Image scaling | Filter Blit FIR resampling filter with up to 9 taps |
| One Pass Filter Taps | 1/3/5 tap available in one pass |
| Rotation | 90 / 180 / 270 degrees with mirror |
| Clipping | One clipping rectangle supported for all bit blit primitives. |
| Alpha blend, scale, and rotation operations | Blending, scaling, and rotation are supported in one pass for stretch blit and one-pass filter blit |
| Rendering size | 32k x 32k raster 2D coordinate system |