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S3C2451X RISC MICROPROCESSOR
19
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.
FEATURES
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
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
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
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
2D
19-1
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