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Decompile texBuildLookup

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This commit is contained in:
Ryan Dwyer
2022-02-17 22:08:34 +10:00
parent 2febd76c3c
commit 1b721a710c
1 changed files with 36 additions and 75 deletions
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src/game/texdecompress.c
+36 -75
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@@ -2808,81 +2808,42 @@ glabel texInflateRle
/* f171720: 27bd0040 */ addiu $sp,$sp,0x40
);
GLOBAL_ASM(
glabel texBuildLookup
/* f171724: 27bdffd0 */ addiu $sp,$sp,-48
/* f171728: afb30020 */ sw $s3,0x20($sp)
/* f17172c: 00809825 */ or $s3,$a0,$zero
/* f171730: afbf002c */ sw $ra,0x2c($sp)
/* f171734: afb2001c */ sw $s2,0x1c($sp)
/* f171738: 00a09025 */ or $s2,$a1,$zero
/* f17173c: afb50028 */ sw $s5,0x28($sp)
/* f171740: afb40024 */ sw $s4,0x24($sp)
/* f171744: afb10018 */ sw $s1,0x18($sp)
/* f171748: afb00014 */ sw $s0,0x14($sp)
/* f17174c: 0fc5cd4f */ jal texReadBits
/* f171750: 2404000b */ addiu $a0,$zero,0xb
/* f171754: 2a410011 */ slti $at,$s2,0x11
/* f171758: 1020000c */ beqz $at,.L0f17178c
/* f17175c: 0040a825 */ or $s5,$v0,$zero
/* f171760: 18400027 */ blez $v0,.L0f171800
/* f171764: 00008025 */ or $s0,$zero,$zero
/* f171768: 02608825 */ or $s1,$s3,$zero
.L0f17176c:
/* f17176c: 0fc5cd4f */ jal texReadBits
/* f171770: 02402025 */ or $a0,$s2,$zero
/* f171774: 26100001 */ addiu $s0,$s0,0x1
/* f171778: 26310002 */ addiu $s1,$s1,0x2
/* f17177c: 1615fffb */ bne $s0,$s5,.L0f17176c
/* f171780: a622fffe */ sh $v0,-0x2($s1)
/* f171784: 1000001f */ b .L0f171804
/* f171788: 8fbf002c */ lw $ra,0x2c($sp)
.L0f17178c:
/* f17178c: 2a410019 */ slti $at,$s2,0x19
/* f171790: 1020000c */ beqz $at,.L0f1717c4
/* f171794: 00000000 */ nop
/* f171798: 18400019 */ blez $v0,.L0f171800
/* f17179c: 00008025 */ or $s0,$zero,$zero
/* f1717a0: 02608825 */ or $s1,$s3,$zero
.L0f1717a4:
/* f1717a4: 0fc5cd4f */ jal texReadBits
/* f1717a8: 02402025 */ or $a0,$s2,$zero
/* f1717ac: 26100001 */ addiu $s0,$s0,0x1
/* f1717b0: 26310004 */ addiu $s1,$s1,0x4
/* f1717b4: 1615fffb */ bne $s0,$s5,.L0f1717a4
/* f1717b8: ae22fffc */ sw $v0,-0x4($s1)
/* f1717bc: 10000011 */ b .L0f171804
/* f1717c0: 8fbf002c */ lw $ra,0x2c($sp)
.L0f1717c4:
/* f1717c4: 1840000e */ blez $v0,.L0f171800
/* f1717c8: 00008025 */ or $s0,$zero,$zero
/* f1717cc: 2654ffe8 */ addiu $s4,$s2,-24
/* f1717d0: 02608825 */ or $s1,$s3,$zero
.L0f1717d4:
/* f1717d4: 0fc5cd4f */ jal texReadBits
/* f1717d8: 24040018 */ addiu $a0,$zero,0x18
/* f1717dc: 00409025 */ or $s2,$v0,$zero
/* f1717e0: 0fc5cd4f */ jal texReadBits
/* f1717e4: 02802025 */ or $a0,$s4,$zero
/* f1717e8: 00127200 */ sll $t6,$s2,0x8
/* f1717ec: 26100001 */ addiu $s0,$s0,0x1
/* f1717f0: 004e7825 */ or $t7,$v0,$t6
/* f1717f4: 26310004 */ addiu $s1,$s1,0x4
/* f1717f8: 1615fff6 */ bne $s0,$s5,.L0f1717d4
/* f1717fc: ae2ffffc */ sw $t7,-0x4($s1)
.L0f171800:
/* f171800: 8fbf002c */ lw $ra,0x2c($sp)
.L0f171804:
/* f171804: 02a01025 */ or $v0,$s5,$zero
/* f171808: 8fb50028 */ lw $s5,0x28($sp)
/* f17180c: 8fb00014 */ lw $s0,0x14($sp)
/* f171810: 8fb10018 */ lw $s1,0x18($sp)
/* f171814: 8fb2001c */ lw $s2,0x1c($sp)
/* f171818: 8fb30020 */ lw $s3,0x20($sp)
/* f17181c: 8fb40024 */ lw $s4,0x24($sp)
/* f171820: 03e00008 */ jr $ra
/* f171824: 27bd0030 */ addiu $sp,$sp,0x30
);
/**
* Populate a lookup table by reading it out of the bit string.
*
* The first 11 bits denate the number of colours in the lookup table.
* The data following this is a list of colours, where each colour is sized
* according to the texture's format.
*
* This function does NOT work with pixel formats of 8 bits or less.
*/
s32 texBuildLookup(u8 *lookup, s32 bitsperpixel)
{
s32 numcolours = texReadBits(11);
s32 i;
if (bitsperpixel <= 16) {
u16 *dst = (u16 *)lookup;
for (i = 0; i < numcolours; i++) {
dst[i] = texReadBits(bitsperpixel);
}
} else if (bitsperpixel <= 24) {
u32 *dst = (u32 *)lookup;
for (i = 0; i < numcolours; i++) {
dst[i] = texReadBits(bitsperpixel);
}
} else {
u32 *dst = (u32 *)lookup;
for (i = 0; i < numcolours; i++) {
dst[i] = texReadBits(24) << 8 | texReadBits(bitsperpixel - 24);
}
}
return numcolours;
}
s32 func0f171828(s32 arg0)
{