Alright, after a while I figured out several things.
1. I was not reading CLUTs properly.
2. It's just a 4-bit index (0-15), which can be grabbed easily from the CLUT.
However, this raises a new final problem:
I can't seem to figure out a way to determine which CLUT to use. There are around 150 CLUT tables just in this one file I'm testing with. If I hard-code the CLUT ID, it works perfectly, so I know I've gotten everything up until this point working.
The only data I seem to have is a "clut_id" short value, which appears to be generated by taking the x, y clut coordinates and turning it into a single number. It appears to be part of LIBGPU.H:
Code: Select all
#define getClut(x, y) (((y)<<6)|(((x)>>4)&0x3f))
However, either I am reversing this wrong, or this isn't going to help me figure out which CLUT to use.
I feel like it would probably be best at this point to try asking what others think, as the answer is probably right in front of me, I just don't see it.
Here are some things which may help me:
1. Please come up with some statements to take a number generated by the above getClut function, so I can confirm it's not just me doing the math wrong.
2. Given the structs below, what might be used to identify which CLUT to use?
Code: Select all
struct {
RECT ts_vram_rect; // See below for struct. Holds Vram coordinates, and full image dimensions.
MR_ULONG ts_vram_offset; // Misleading name. This is just a pointer to where the image data is.
MR_USHORT ts_id; // Texture ID.
MR_USHORT ts_tpage_id; // Texture Page ID.
MR_USHORT ts_clut_id; // This is the value I mention above, presumed to be generated by getClut.
MR_USHORT ts_flags; // Texture flags. Nothing much to see here.
MR_UBYTE ts_u; // Used to create texture UVs
MR_UBYTE ts_v; //
MR_UBYTE ts_w; // In-game texture width. Some images have extra parts which get cut-off in-game. The full texture width is in vram_rect.
MR_UBYTE ts_h; // In-game texture height.
}; // "TXSETUP"
struct {
short x; // Vram X
short y; // Vram Y
short w; // Width
short h; // Height
}; // "RECT" This is the RECT struct from LIBGPU.H
3. Anyone with more experience that me that has any further insight than what I may have, feel free to share any tips or suggestions which might help out.
