Sega Saturn Development > General Jo Engine Help

Can't load 8-bit image for infinite map

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D3nX:
Hello !

We are a bunch of student at Epitech (Superior school for programming) and we are trying to make a Sega Saturn game as a project for our year there. However it turns out that we have some little issues :

We are trying to do a "Mode 7" like map, but when we load the texture using "jo_tga_8bits_loader", this happens :


We loaded this picture:


We also tried to convert the TGA through 8-bit using ffmpeg, image magick, without success. Can somebody help us ?

Thanks in advance :)

FranMatsusaka:
Hi,

I tried to use your image in the "demo - vdp2 plane" and it works nicely.


Maybe you were not exporting the TGA correctly... To make sure the TGA is in a proper format open it with a hexadecimal viewer and check if the first 16 bytes are like in this image


And here's the image exported by me if you need.
https://drive.google.com/file/d/1OL8jkjLTVjZOZIuCTjkj05hAhcMQg2C_/view?usp=sharing
I've just saved the png as 8-bit image in Photoshop (using "Save for Web & devices..." option), open the new 8bit image and save as TGA.

Good luck with your project!

D3nX:
Hello, sorry for the late answer!

Thank you for taking the time to fix the issue and answer us, the picture now finally loads into the game! But yeah I think the problem come from the exportation of it. However, is there a way to export it the same way you did but with another software than photoshop? (free software such as ffmpeg, paint.net, etc...) I could not find a way to do so.

Thank you again :)

FranMatsusaka:
Sorry for the late response. Sadly I tried GIMP2 but no luck.

I found a web conversor that keeps the color deep in the result TGA file. I have not tried directly in the project but the header looked right to me.
https://www.aconvert.com/image/png-to-tga/

Good luck!

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