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thyslo · 02 May 2020, 10:36

Thanks for this tutorial! Meanwhile halfway through episode 5 and I've learnt a lot so far. Really looking forward for more stuff to come;-)

One remark. 'though: With the Episode5 files I tried to load a picture which I saved with the Amiga program Brilliance. I noticed that the CMAP header of this picture wasn't found in palette.asm / agdGetBitmapPalette.

The reason is that Brilliance has some long extra chunk after FORM which is like:

Code:

   ILBMANNO   "Written by Brilliance Release 2.0

So, in agdGetBitmapPalette I had to change the line

Code:

    move.l #40,d7

to

Code:

    move.l #80,d7

for the CMAP to be loaded. But this is no generic solution, and I don't know if this would be a problem if a really small ILBM file is loaded.

02 May 2020, 10:36	#12
thyslo Registered User Join Date: Apr 2018 Location: Germany Posts: 189	Thanks for this tutorial! Meanwhile halfway through episode 5 and I've learnt a lot so far. Really looking forward for more stuff to come;-) One remark. 'though: With the Episode5 files I tried to load a picture which I saved with the Amiga program Brilliance. I noticed that the CMAP header of this picture wasn't found in palette.asm / agdGetBitmapPalette. The reason is that Brilliance has some long extra chunk after FORM which is like: Code: ILBMANNO "Written by Brilliance Release 2.0 So, in agdGetBitmapPalette I had to change the line Code: move.l #40,d7 to Code: move.l #80,d7 for the CMAP to be loaded. But this is no generic solution, and I don't know if this would be a problem if a really small ILBM file is loaded.