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Decompile texGetAverageGreen

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This commit is contained in:
Ryan Dwyer
2022-02-20 10:13:18 +10:00
parent 3cec795c9a
commit 770b1a0558
2 changed files with 25 additions and 50 deletions
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src/game/texdecompress.c
+24 -49
View File
@@ -327,52 +327,27 @@ s32 texGetAverageRed(u16 colour1, u16 colour2, u16 colour3, u16 colour4)
return value;
}
GLOBAL_ASM(
glabel func0f16eefc
/* f16eefc: 00046183 */ sra $t4,$a0,0x6
/* f16ef00: 318d001f */ andi $t5,$t4,0x1f
/* f16ef04: 000d70c0 */ sll $t6,$t5,0x3
/* f16ef08: 00047a03 */ sra $t7,$a0,0x8
/* f16ef0c: 31f80007 */ andi $t8,$t7,0x7
/* f16ef10: 01d8c825 */ or $t9,$t6,$t8
/* f16ef14: 00056183 */ sra $t4,$a1,0x6
/* f16ef18: 318d001f */ andi $t5,$t4,0x1f
/* f16ef1c: 00057203 */ sra $t6,$a1,0x8
/* f16ef20: 31d80007 */ andi $t8,$t6,0x7
/* f16ef24: 000d78c0 */ sll $t7,$t5,0x3
/* f16ef28: 01f86025 */ or $t4,$t7,$t8
/* f16ef2c: 032c6821 */ addu $t5,$t9,$t4
/* f16ef30: 00067183 */ sra $t6,$a2,0x6
/* f16ef34: 31cf001f */ andi $t7,$t6,0x1f
/* f16ef38: 0006ca03 */ sra $t9,$a2,0x8
/* f16ef3c: 332c0007 */ andi $t4,$t9,0x7
/* f16ef40: 000fc0c0 */ sll $t8,$t7,0x3
/* f16ef44: 030c7025 */ or $t6,$t8,$t4
/* f16ef48: 01ae7821 */ addu $t7,$t5,$t6
/* f16ef4c: 0007c983 */ sra $t9,$a3,0x6
/* f16ef50: 3338001f */ andi $t8,$t9,0x1f
/* f16ef54: 00076a03 */ sra $t5,$a3,0x8
/* f16ef58: 31ae0007 */ andi $t6,$t5,0x7
/* f16ef5c: 001860c0 */ sll $t4,$t8,0x3
/* f16ef60: 018ec825 */ or $t9,$t4,$t6
/* f16ef64: 01f95821 */ addu $t3,$t7,$t9
/* f16ef68: 256b0002 */ addiu $t3,$t3,0x2
/* f16ef6c: 000b1883 */ sra $v1,$t3,0x2
/* f16ef70: afa40000 */ sw $a0,0x0($sp)
/* f16ef74: afa50004 */ sw $a1,0x4($sp)
/* f16ef78: afa60008 */ sw $a2,0x8($sp)
/* f16ef7c: 04610002 */ bgez $v1,.L0f16ef88
/* f16ef80: afa7000c */ sw $a3,0xc($sp)
/* f16ef84: 00001825 */ or $v1,$zero,$zero
.L0f16ef88:
/* f16ef88: 28610100 */ slti $at,$v1,0x100
/* f16ef8c: 14200002 */ bnez $at,.L0f16ef98
/* f16ef90: 00000000 */ nop
/* f16ef94: 240300ff */ addiu $v1,$zero,0xff
.L0f16ef98:
/* f16ef98: 03e00008 */ jr $ra
/* f16ef9c: 00601025 */ or $v0,$v1,$zero
);
s32 texGetAverageGreen(u16 colour1, u16 colour2, u16 colour3, u16 colour4)
{
s32 value = 0;
value += ((colour1 >> 6) & 0x1f) << 3 | (colour1 >> 8) & 7;
value += ((colour2 >> 6) & 0x1f) << 3 | (colour2 >> 8) & 7;
value += ((colour3 >> 6) & 0x1f) << 3 | (colour3 >> 8) & 7;
value += ((colour4 >> 6) & 0x1f) << 3 | (colour4 >> 8) & 7;
value = (value + 2) >> 2;
if (value < 0) {
value = 0;
}
if (value > 0xff) {
value = 0xff;
}
return value;
}
GLOBAL_ASM(
glabel func0f16efa0
@@ -658,7 +633,7 @@ glabel func0f16f0f4
/* f16f36c: 32a4ffff */ andi $a0,$s5,0xffff
/* f16f370: 3225ffff */ andi $a1,$s1,0xffff
/* f16f374: 3246ffff */ andi $a2,$s2,0xffff
/* f16f378: 0fc5bbbf */ jal func0f16eefc
/* f16f378: 0fc5bbbf */ jal texGetAverageGreen
/* f16f37c: 3207ffff */ andi $a3,$s0,0xffff
/* f16f380: 00409825 */ or $s3,$v0,$zero
/* f16f384: 32a4ffff */ andi $a0,$s5,0xffff
@@ -919,7 +894,7 @@ glabel func0f16f0f4
/* f16f730: 32a4ffff */ andi $a0,$s5,0xffff
/* f16f734: 3225ffff */ andi $a1,$s1,0xffff
/* f16f738: 3246ffff */ andi $a2,$s2,0xffff
/* f16f73c: 0fc5bbbf */ jal func0f16eefc
/* f16f73c: 0fc5bbbf */ jal texGetAverageGreen
/* f16f740: 3207ffff */ andi $a3,$s0,0xffff
/* f16f744: 00409825 */ or $s3,$v0,$zero
/* f16f748: 32a4ffff */ andi $a0,$s5,0xffff
@@ -1005,7 +980,7 @@ glabel func0f16f0f4
/* f16f87c: 32a4ffff */ andi $a0,$s5,0xffff
/* f16f880: 3225ffff */ andi $a1,$s1,0xffff
/* f16f884: 3246ffff */ andi $a2,$s2,0xffff
/* f16f888: 0fc5bbbf */ jal func0f16eefc
/* f16f888: 0fc5bbbf */ jal texGetAverageGreen
/* f16f88c: 3207ffff */ andi $a3,$s0,0xffff
/* f16f890: 00409825 */ or $s3,$v0,$zero
/* f16f894: 32a4ffff */ andi $a0,$s5,0xffff
src/include/game/texdecompress.h
+1 -1
View File
@@ -8,7 +8,7 @@ void func0f16e810(u32 arg0);
s32 texInflateZlib(u8 *src, u8 *dst, s32 arg2, s32 forcenumimages, struct texturething *arg4, s32 arg5);
s32 texAlignIndices(u8 *arg0, s32 width, s32 height, s32 format, u8 *dst);
s32 texGetAverageRed(u16 colour1, u16 colour2, u16 colour3, u16 colour4);
u32 func0f16eefc(void);
s32 texGetAverageGreen(u16 colour1, u16 colour2, u16 colour3, u16 colour4);
u32 func0f16efa0(void);
u32 func0f16f044(void);
s32 func0f16f0f4(u8 *start, u8 *end, s32 width, s32 height, s32 format, u16 *palette, s32 numcolours);