I was able to "fix" it by making few changes in the library. It seems it was storing cells/tiles and map indexes horizontally. I don't know if this was done like this because of mode7 plane . If anybody want's to load 8bit tgas in the background, you will need to make small hacks/changes in
__jo_create_map and
jo_img_to_vdp2_cells in vdp2.c
Though, this could potentially break something else...
void jo_img_to_vdp2_cells(const jo_img_8bits * const img, const bool vertical_flip, unsigned char *cell)
{
register int x;
register int y;
register int cell_x;
register int cell_y;
register int line_y;
register int i;
#ifdef JO_DEBUG
if (img == JO_NULL)
{
jo_core_error("img is null");
return ;
}
if (JO_MOD_POW2(img->width, 8) != 0)
{
jo_core_error("Image width must be multiple of 8");
return ;
}
if (JO_MOD_POW2(img->height, 8) != 0)
{
jo_core_error("Image height must be multiple of 8");
return ;
}
#endif
for (JO_ZERO(y), JO_ZERO(line_y); y < img->height; y += CELL_HEIGHT, line_y += JO_MULT_BY_8(img->width))
{
for (JO_ZERO(x); x < img->width; x += CELL_WIDTH)
{
cell_x = x;
cell_y = line_y;
for (JO_ZERO(i); i < CELL_SIZE; ++i, ++cell, ++cell_x)
{
if (i != 0 && JO_MOD_POW2(i, CELL_WIDTH) == 0)
{
cell_x -= CELL_WIDTH;
cell_y += img->width;
}
/**/
if (vertical_flip)
*cell = img->data[(img->width - cell_x - 1) + cell_y];
else
/**/
*cell = img->data[cell_x + cell_y];
}
}
}
}
static void __jo_create_map(const jo_img_8bits * const img, unsigned short *map, const unsigned short palette_id, const int map_offset)
{
register int x;
register int y;
register int x2;
register int y2;
register int i;
unsigned short paloff;
paloff = JO_MULT_BY_4096(palette_id);
y = JO_DIV_BY_8(img->height);
x = JO_DIV_BY_8(img->width);
JO_ZERO(y2);
JO_ZERO(x2);
for (JO_ZERO(i); i < MAP_LENGTH; ++i)
{
/*
if (i != 0 && JO_MOD_POW2(i, CELL_COUNT_PER_ROW) == 0)
++y2;
if (y2 >= y)
JO_ZERO(y2);
*map = (JO_MULT_BY_2(x2 + y2 * y) | paloff) + map_offset;
++map;
++x2;
if (x2 >= x)
JO_ZERO(y2);
/**/
if (i != 0 && JO_MOD_POW2(i, CELL_COUNT_PER_ROW) == 0) {
JO_ZERO(x2);
++y2;
/*
if (y2 >= y) {
JO_ZERO(y2);
}*/
}
*map = (JO_MULT_BY_2(x2 + y2 * x) | paloff) + map_offset;
++map;
++x2;
/**/
}
}
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