Hello, help me solve the problem with the Noesis plugin. it incorrectly shows the ps2 swizzle 4bpp texture, but some programs also do this incorrectly. thanks in advance

if use MummGGTool:

width = 64, height = 32, bpp = 4

inside Noesis i use:

data = rapi.imageUntwiddlePS2(data, width, height,  4)
data = rapi.imageDecodeRawPal(data, palette, width, height,  4, 'r8g8b8a8', 1)

if width = 32, height = 64

if width = 64, height = 32

if use "Console Texture Explorer":

s0000_023.zip

It looks like the data is in blocks of 32x32 (0x200 bytes), so you need to untwiddle each block separately and then join them together to get your final image.

 

22 hours ago, DKDave said:

It looks like the data is in blocks of 32x32 (0x200 bytes)

thank its true, i so suspected it. but the first program led me astray

offtopic:

I found the code on github and 8bits work well, but 4bits look bad, what's wrong with them? swizzle_ps2.py

need: have:

Spoiler

def unswizzle_ps2_8bit(image_data, img_width, img_height):
    unswizzled_data = bytearray(img_width * img_height)
    for y in range(img_height):
        for x in range(img_width):
            block_location = (y & (~0xF)) * img_width + (x & (~0xF)) * 2
            swap_selector = (((y + 2) >> 2) & 0x1) * 4
            pos_y = (((y & (~3)) >> 1) + (y & 1)) & 0x7
            column_location = pos_y * img_width * 2 + ((x + swap_selector) & 0x7) * 4
            byte_num = ((y >> 1) & 1) + ((x >> 2) & 2)
            swizzle_id = block_location + column_location + byte_num
            unswizzled_data[y * img_width + x] = image_data[swizzle_id]
    return unswizzled_data

def unswizzle_ps2_4bit(image_data, img_width, img_height):
    pixels = bytearray(img_width * img_height)

    for i in range(img_width * img_height // 2):
        index = image_data[i]
        id2 = (index >> 4) & 0xF
        id1 = index & 0xF
        pixels[i * 2] = id1
        pixels[i * 2 + 1] = id2

    new_pixels = unswizzle_ps2_8bit(pixels, img_width, img_height)

    unswizzled_data = bytearray(img_width * img_height)
    for i in range(img_width * img_height // 2):
        idx1 = new_pixels[i * 2]
        idx2 = new_pixels[i * 2 + 1]
        idx = ((idx2 << 4) | idx1) & 0xFF
        unswizzled_data[i] = idx

    return unswizzled_data

 

en013_01.zip