SIGA

SImple Graphic Accelerator

Github

A 2D graphic accelerator from scratch. This project doesn't use any IP core. The written SDRAM controller, uses burst commands as far as possible.

Output video signal: SVGA Signal 800x600 @ 56 Hz timing, RGB565 pixel format

Current drawing abilities:

• Filling rectangle
• Drawing line (by bresenham algorithm)
• Drawing circle (by bresenham algorithm)

• Filling circle (by bresenham algorithm)

I will work on adding triangles drawing, alpha-blending, and anti-aliasing.

There's an example in this repo to showing current status. I used a cheap Spartan6 board named ESPIER_III V105 (labels in Chinese that marked on its corner). You can find its schematic here. This board has a xc6slx9-2tqg144c (It seems this type hasn't internal hard DDR controller) and a w9864g6kh as SDRAM. I have brought some images of this example below.

Used Board: