Chapter 18 1 Introduction; Features - Samsung S3C2416 User Manual

S3C2416X RISC MICROPROCESSOR
18
1 INTRODUCTION
2D graphics accelerator supports three types of primitive drawings: Line/Point Drawing, Bit Block Transfer
(BitBLT) and Color Expansion (Text Drawing).
Rendering a primitive takes two steps: 1) configure the rendering parameters, such as foreground color and the
coordinate data, by setting the drawing-context registers; 2) start the rendering process by setting the relevant
command registers accordingly.

1.1 FEATURES

1.1.1 Primitives
• Line/Point Drawing
- DDA ( Digital Differential Analyzer) algorithm
- Do-Not-Draw Last Point support
• BitBLT
- Stretched BitBLT support ( Nearest sampling )
- Memory to Screen
- Host to Screen
• Color Expansion
- Memory to Screen
- Host to Screen
2D
1.1.2 Per-pixel Operation
• Maximum 2040*2040 image size
• Window Clipping
• 90°/180°/270°/X-flip/Y-flip Rotation
• Totally 256 3-operand Raster Operation (ROP)
• Alpha Blending
- Alpha Blending with a user-specified 256-level
alpha value
- Per-pixel Alpha Blending
• 8x8x16-bpp pattern drawing
1.1.3 Data Format
• 16/24/32-bpp color format support
• YUV input support (4:2:2, 2-planar)
• 11.11 fixed point format for coordinate data
2D
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