Work in progress, not yet functional.

I was able to build the project from a clean SMW ROM with the following steps:

• Stick the clean rom in the rom directory, named something convenient (I used coop.smc)
• Rename the folder of graphics in rom you want to just "Graphics"
• Open the ROM in Lunar Magic
• Check the checkbox in the Options menu for "Used joined GFX files"
• Press the green mushroom button to insert AllGFX.bin
• Click the rainbow star, then the red star with the red arrow
• Select one of the .pal files from the rom directory
• Click the save button in the Palette Editor
• Run the following, in the project root: <path to asar> co-op.asm rom/coop.smc
• Bam.

This allows to you customize Super Mario World Widescreen with your own settings and also allows to you edit and build the patch from scratch.

These steps requires a copy of the Super Mario World game, thus it's not possible to create a CI or any other form of automated building process publically.

1. Original Super Mario World game image, NTSC-US version.
2. A BPS patcher (e.g. FLIPS)
3. Asar

On the 'base' folder, there are BPS patches with Super Mario World modified with the following things:

1. SA-1 Pack v1.41 (low power version) is applied.
2. Lunar Magic v3.30 is installed.
3. Edited levels with required changes for running with a certain resolution.

For example, 'smw-352-base.bps' has all level changes required to the game run at 352x224 resolution. This resolution allows for 16:10 and 16:9 widescreen resolutions (+48 extra pixels).

You can edit the image with Lunar Magic if you would like to modify a certain level, keeping in mind that the VRAM patch must be disabled in Options.

In the "asm" folder, open "main.asm" with a text editor. Find "!widetype =" and select the screen mode that you would like to use:

• !normal - 352x224 - 16:9 and 16:10 resolutions.
• !extra - 384x224 - 16:9 and 2:1 resolutions.
• !ultra - 448x224 - 2:1, 20.5:9, 21:9 and 64:27 resolutions.
• !hyper - 480x224 - 21:9 and 64:27 resolutions.

Keep in mind that !ultra and !hyper settings are currently not fully implemented, both ASM-wise and base-ROM wise, these are experimental and incomplete versions.

Apply main.asm using Asar (alternatively, via the do.sh script) to the base ROM you have chosen.

The BSO file tells how bsnes-hd will render the game.

w1s1WXXS2i0o0p0b1B1c1

Change the WXX to:

• W48 - for 352x224 resolution
• W64 - for 384x224 resolution
• W96 - for 448x224 resolution
• W112 - for 480x224 resolution

Change o0p0 to o1p1 to turn on overscan and pixel aspect ratio (e.g. 8:7 pixels). These settings in particular only affect the bsnes-hd core.

Make sure to save the .bso file to the same name as the ROM file.

1. Go to base folder and pick the base patch to use.
2. Apply base patch on ROM.
3. Select resolution on main.asm
4. Apply main.asm on ROM.
5. Set up BSO with the resolution and aspect ratio wanted.
6. Make sure both .sfc and .bso have the same file name and verify the game on bsnes-hd.