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    Question about max filesize for Wolf3D title pic

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    deuxsonic
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    Post by deuxsonic Mon Jun 14, 2021 8:24 pm

    Hello,

    I'm new to modding Wolf3D, but tried my hand at creating a replacement title pic for the original DOS version of the game. There is a max size of 65535 bytes for artwork it looks like, and the 320x200 pixel bitmap replacement I created is 65080 bytes. Upon importing it into VGAGRAPH, however, the compressed size is shown as 72995 bytes. Since this is larger than the max, the game isn't able to use it. What options do I have for reducing the filesize of the artwork?

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    Princess Peach
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    Post by Princess Peach Tue Jun 15, 2021 3:03 am

    A few ideas I can think of:

    1. Split it into 2 320x100 images then load both (I think Spear did this?)
    2. Give the image its own palette ( I think Spear also did this for endscreens?)
    3. Play with the brightness and saturation see if it makes the size larger or smaller
    4. Rip the title from one of Wolf3dGuy's mods (I think he used it somewhere too? 😆 )
    5. Shrink the image a bit then center it on the game
    6. Put it as the signon screen instead (which is always 64000 bytes)
    Wolf3DGuy
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    Post by Wolf3DGuy Tue Jun 15, 2021 6:53 am

    @Princess Peach wrote:A few ideas I can think of:

    4. Rip the title from one of Wolf3dGuy's mods (I think he used it somewhere too? 😆 )
    Because of the title, to avoid confusion that's a huge no-go.
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    deuxsonic
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    Post by deuxsonic Tue Jun 15, 2021 4:38 pm

    Is there anything special that you did with your version to get it to a useable size?
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    deuxsonic
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    Post by deuxsonic Tue Jun 15, 2021 5:35 pm

    Using Photoshop, I can reduce the number of colors, but even after reducing it into the 20s, the size drop isn't all that significant. Starting with a much darker copy and converting over to the Wolf3D palette can get the size just barely small enough. I guess I'm trying to feel out how much a color needs to appear in order to make a significant impact.
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    Post by Wolf3DGuy Tue Jun 22, 2021 3:30 am

    The best thing you can do is split the image into 2 separate images, then make the exe draw both images on screen, like the title screen in Spear.

    Or you can still use Wolf4SDL, you don't have that 64k limitation for the VGAs.
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    Post by Thomas Tue Jun 29, 2021 10:53 am

    This has been used in quite a few mods, though I have noticed some dinky pixels here and there.

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