JoEngine: Out of Mem trying to import a Tekken 2 texture char

[celsowm]

Hi !
I tried to import King from Tekken 2 (source: PlayStation - Tekken 2 - King - The Models Resource)

No problems at all when I tried without textures:

But when I try to apply (converted on jo engine map editor):

jo_sprite_add_tga(JO_ROOT_DIR, "KING.TGA", JO_COLOR_Transparent);

I got this:

How can I fix this?

 

[nando]

use 8 bit paletted textures instead of RGB - it helps also if they all fit on 1 palette, but you will have to align all the palette indexes.

basically ever quad is it's own sprite, so that is a lot if they are all RGB. I think that the Jo engine tool likely duplicates them too, which is worse. but it's a good place to start and learn at least..

 

[celsowm]

use 8 bit paletted textures instead of RGB - it helps also if they all fit on 1 palette, but you will have to align all the palette indexes.

basically ever quad is it's own sprite, so that is a lot if they are all RGB. I think that the Jo engine tool likely duplicates them too, which is worse. but it's a good place to start and learn at least..

thanks for your hints,
so I converted it using image magick:

convert KING.png -colors 256 -depth 8 KING.tga

Is was from an 1.500kb TGA to a 385kb TGA ! Nice

Unfortunately, still giving me Out of Memory 😕

 

[slinga]

Expand Jo Engine's heap size.

#define LWRAM 0x00200000 // start of LWRAM memory. Doesn't appear to be used
#define LWRAM_HEAP_SIZE 0x100000 // number of bytes to extend heap by

// increase the default heap size. LWRAM is not being used
jo_add_memory_zone((unsigned char *)LWRAM, LWRAM_HEAP_SIZE);

Jo Engine's default heap is not that big. Obviously it's up to you to make sure you aren't using that region of memory. Also LWRAM is slower and has some other constraints...

 

[celsowm]

Expand Jo Engine's heap size.





Jo Engine's default heap is not that big. Obviously it's up to you to make sure you aren't using that region of memory. Also LWRAM is slower and has some other constraints...

thanks but, I do not know why, the result was this:

maybe an incompatibility with zoom factor?

its strange because when I try ROCK.tga, I got a rockyish king...

 

[nando]

did you split up the original texture into individual quads? because Saturn doesn't have UV mapping.

 

[celsowm]

did you split up the original texture into individual quads? because Saturn doesn't have UV mapping.

I dont know, I just used the method
jo_sprite_add_tga(JO_ROOT_DIR, "KING.TGA", JO_COLOR_Transparent);

 

[Frogbull]

You need to split the texture into multiple smaller ones and convert as many as possible to 4-bit (with a maximum of 16 colors)

 

[celsowm]

You need to split the texture into multiple smaller ones and convert as many as possible to 4-bit (with a maximum of 16 colors)

sorry for being so naive (at least in gaming programming), how can I do that?

 

[Frogbull]

sorry for being so naive (at least in gaming programming), how can I do that?

You need to reshape the 3D model to reduce the polycount by merging two triangles into one quad where possible.

After that, assign one material to each polygon. You can reset the UV mapping (unfortunately, the Saturn doesn't support UV mapping). The only modifications allowed afterward are rotating or mirroring the UV map to simulate the Saturn's capabilities. If a polygon uses only one color, that's even better, as pure color polygons are less costly than textured polygons.

 

[celsowm]

You need to reshape the 3D model to reduce the polycount by merging two triangles into one quad where possible.

After that, assign one material to each polygon. You can reset the UV mapping (unfortunately, the Saturn doesn't support UV mapping). The only modifications allowed afterward are rotating or mirroring the UV map to simulate the Saturn's capabilities. If a polygon uses only one color, that's even better, as pure color polygons are less costly than textured polygons.

Oh...thanks
I do not even know how to do that but I am gonna try to find a tutorial or something like that.
In your experience porting psx games, what is your approach ?