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Decompile texGetAverageBlue

This commit is contained in:
Ryan Dwyer 2022-02-20 10:14:00 +10:00
parent 770b1a0558
commit 86fe29b110
2 changed files with 25 additions and 50 deletions
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73
src/game/texdecompress.c
View File

@ -349,52 +349,27 @@ s32 texGetAverageGreen(u16 colour1, u16 colour2, u16 colour3, u16 colour4)
return value;
}
GLOBAL_ASM(
glabel func0f16efa0
/* f16efa0: 00046043 */ sra $t4,$a0,0x1
/* f16efa4: 318d001f */ andi $t5,$t4,0x1f
/* f16efa8: 000d70c0 */ sll $t6,$t5,0x3
/* f16efac: 000478c3 */ sra $t7,$a0,0x3
/* f16efb0: 31f80007 */ andi $t8,$t7,0x7
/* f16efb4: 01d8c825 */ or $t9,$t6,$t8
/* f16efb8: 00056043 */ sra $t4,$a1,0x1
/* f16efbc: 318d001f */ andi $t5,$t4,0x1f
/* f16efc0: 000570c3 */ sra $t6,$a1,0x3
/* f16efc4: 31d80007 */ andi $t8,$t6,0x7
/* f16efc8: 000d78c0 */ sll $t7,$t5,0x3
/* f16efcc: 01f86025 */ or $t4,$t7,$t8
/* f16efd0: 032c6821 */ addu $t5,$t9,$t4
/* f16efd4: 00067043 */ sra $t6,$a2,0x1
/* f16efd8: 31cf001f */ andi $t7,$t6,0x1f
/* f16efdc: 0006c8c3 */ sra $t9,$a2,0x3
/* f16efe0: 332c0007 */ andi $t4,$t9,0x7
/* f16efe4: 000fc0c0 */ sll $t8,$t7,0x3
/* f16efe8: 030c7025 */ or $t6,$t8,$t4
/* f16efec: 01ae7821 */ addu $t7,$t5,$t6
/* f16eff0: 0007c843 */ sra $t9,$a3,0x1
/* f16eff4: 3338001f */ andi $t8,$t9,0x1f
/* f16eff8: 000768c3 */ sra $t5,$a3,0x3
/* f16effc: 31ae0007 */ andi $t6,$t5,0x7
/* f16f000: 001860c0 */ sll $t4,$t8,0x3
/* f16f004: 018ec825 */ or $t9,$t4,$t6
/* f16f008: 01f95821 */ addu $t3,$t7,$t9
/* f16f00c: 256b0002 */ addiu $t3,$t3,0x2
/* f16f010: 000b1883 */ sra $v1,$t3,0x2
/* f16f014: afa40000 */ sw $a0,0x0($sp)
/* f16f018: afa50004 */ sw $a1,0x4($sp)
/* f16f01c: afa60008 */ sw $a2,0x8($sp)
/* f16f020: 04610002 */ bgez $v1,.L0f16f02c
/* f16f024: afa7000c */ sw $a3,0xc($sp)
/* f16f028: 00001825 */ or $v1,$zero,$zero
.L0f16f02c:
/* f16f02c: 28610100 */ slti $at,$v1,0x100
/* f16f030: 14200002 */ bnez $at,.L0f16f03c
/* f16f034: 00000000 */ nop
/* f16f038: 240300ff */ addiu $v1,$zero,0xff
.L0f16f03c:
/* f16f03c: 03e00008 */ jr $ra
/* f16f040: 00601025 */ or $v0,$v1,$zero
);
s32 texGetAverageBlue(u16 colour1, u16 colour2, u16 colour3, u16 colour4)
{
s32 value = 0;
value += ((colour1 >> 1) & 0x1f) << 3 | (colour1 >> 3) & 7;
value += ((colour2 >> 1) & 0x1f) << 3 | (colour2 >> 3) & 7;
value += ((colour3 >> 1) & 0x1f) << 3 | (colour3 >> 3) & 7;
value += ((colour4 >> 1) & 0x1f) << 3 | (colour4 >> 3) & 7;
value = (value + 2) >> 2;
if (value < 0) {
value = 0;
}
if (value > 0xff) {
value = 0xff;
}
return value;
}
GLOBAL_ASM(
glabel func0f16f044
@ -639,7 +614,7 @@ glabel func0f16f0f4
/* f16f384: 32a4ffff */ andi $a0,$s5,0xffff
/* f16f388: 3225ffff */ andi $a1,$s1,0xffff
/* f16f38c: 3246ffff */ andi $a2,$s2,0xffff
/* f16f390: 0fc5bbe8 */ jal func0f16efa0
/* f16f390: 0fc5bbe8 */ jal texGetAverageBlue
/* f16f394: 3207ffff */ andi $a3,$s0,0xffff
/* f16f398: 0040a025 */ or $s4,$v0,$zero
/* f16f39c: 32a4ffff */ andi $a0,$s5,0xffff
@ -900,7 +875,7 @@ glabel func0f16f0f4
/* f16f748: 32a4ffff */ andi $a0,$s5,0xffff
/* f16f74c: 3225ffff */ andi $a1,$s1,0xffff
/* f16f750: 3246ffff */ andi $a2,$s2,0xffff
/* f16f754: 0fc5bbe8 */ jal func0f16efa0
/* f16f754: 0fc5bbe8 */ jal texGetAverageBlue
/* f16f758: 3207ffff */ andi $a3,$s0,0xffff
/* f16f75c: 0040a025 */ or $s4,$v0,$zero
/* f16f760: 32a4ffff */ andi $a0,$s5,0xffff
@ -986,7 +961,7 @@ glabel func0f16f0f4
/* f16f894: 32a4ffff */ andi $a0,$s5,0xffff
/* f16f898: 3225ffff */ andi $a1,$s1,0xffff
/* f16f89c: 3246ffff */ andi $a2,$s2,0xffff
/* f16f8a0: 0fc5bbe8 */ jal func0f16efa0
/* f16f8a0: 0fc5bbe8 */ jal texGetAverageBlue
/* f16f8a4: 3207ffff */ andi $a3,$s0,0xffff
/* f16f8a8: 0040a025 */ or $s4,$v0,$zero
/* f16f8ac: 32a4ffff */ andi $a0,$s5,0xffff

2
src/include/game/texdecompress.h
View File

@ -9,7 +9,7 @@ s32 texInflateZlib(u8 *src, u8 *dst, s32 arg2, s32 forcenumimages, struct textur
s32 texAlignIndices(u8 *arg0, s32 width, s32 height, s32 format, u8 *dst);
s32 texGetAverageRed(u16 colour1, u16 colour2, u16 colour3, u16 colour4);
s32 texGetAverageGreen(u16 colour1, u16 colour2, u16 colour3, u16 colour4);
u32 func0f16efa0(void);
s32 texGetAverageBlue(u16 colour1, u16 colour2, u16 colour3, u16 colour4);
u32 func0f16f044(void);
s32 func0f16f0f4(u8 *start, u8 *end, s32 width, s32 height, s32 format, u16 *palette, s32 numcolours);
u32 func0f16fc8c(void);