Rgb2Hires is a set of tools to help converting a modern RGB image (JPEG, PNG) to the HIRES format for Apple II computers ; either as a binary export or an assembly listing.
The color of the RGB imlage can be approximative: Rgb2Hires will match them with the nearest HIRES color.
* **Picture**: a program to convert a RGB png to a binary or an ASM excerpt, that can be loaded to the HIRES memory pages of an Apple II. An optional **live preview** can be displayed: its window will simulate an RGB monitor and will show the result, including color clashing and artifacts.
* Source image must contains six colors : BLACK, WHITE, ORANGE, GREEN, BLUE and PURPLE. The color may be approximation of the Apple II 6 colors. Please refer to the provided pic.
* **Tile**: given a RGB png tile sheet that satisfies the same requirements as above, it extracts a 14x16 tile and converts it to ASM data. This data **is not interleaved**.
* **Loader**: a program that will load and display a picture generated by the *Picture* program. A bash scripts is provided as an exemple to load the picture and the loader on an image disk. [AppleCommander](https://applecommander.github.io/) is required to do so. Once in ProDOS, just type *-DISPLAY*.
__Note:__ For more information about the "Hires" format and its limitations, you can refer to my [website](https://www.xtof.info/hires-graphics-apple-ii.html).
Depending on your Linux distribution, you may have to set an environment variable *sdl2_DIR*, pointing to the directory hosting SDL2's cmake configuration, before running cmake.
A correct source image, *test.png*, is provided as an example. Convert it using Picture, then copy it on a dsk image along with the Apple II loader. You can use or refer to the provided script in the *Loader_Apple2* folder.
The live preview can help to visualise color clashing and artifacts. You can edit your file using *Photoshop* or any other application. The *Preview* window will be ubdated each tile the file is saved.
