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Decompile guFrustum

This commit is contained in:
Ryan Dwyer 2021-01-30 17:34:42 +10:00
parent 7da14bb4c9
commit 94cba7aff9
2 changed files with 8 additions and 40 deletions
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1
Makefile
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@ -68,6 +68,7 @@ $(B_DIR)/lib/ultra/gu/ortho.o: LOOPUNROLL :=
$(B_DIR)/lib/ultra/libc/ll.o: MIPSISET := -mips3 -o32
$(B_DIR)/lib/ultra/libc/llcvt.o: MIPSISET := -mips3 -o32
$(B_DIR)/lib/ultra/gu/frustum.o: OPT_LVL := -O3
$(B_DIR)/lib/ultra/gu/ortho.o: OPT_LVL := -O3
$(B_DIR)/lib/ultra/gu/scale.o: OPT_LVL := -O3
$(B_DIR)/lib/ultra/io/ai.o: OPT_LVL := -O1

47
src/lib/ultra/gu/frustum.c
View File

@ -22,44 +22,11 @@ void guFrustumF(float mf[4][4], float l, float r, float b, float t, float n, flo
}
}
GLOBAL_ASM(
glabel guFrustum
/* 4ff80: 27bdff98 */ addiu $sp,$sp,-104
/* 4ff84: 44856000 */ mtc1 $a1,$f12
/* 4ff88: 44867000 */ mtc1 $a2,$f14
/* 4ff8c: 44878000 */ mtc1 $a3,$f16
/* 4ff90: c7a40078 */ lwc1 $f4,0x78($sp)
/* 4ff94: c7a6007c */ lwc1 $f6,0x7c($sp)
/* 4ff98: c7a80080 */ lwc1 $f8,0x80($sp)
/* 4ff9c: c7aa0084 */ lwc1 $f10,0x84($sp)
/* 4ffa0: afbf0024 */ sw $ra,0x24($sp)
/* 4ffa4: afa40068 */ sw $a0,0x68($sp)
/* 4ffa8: 44056000 */ mfc1 $a1,$f12
/* 4ffac: 44067000 */ mfc1 $a2,$f14
/* 4ffb0: 44078000 */ mfc1 $a3,$f16
/* 4ffb4: 27a40028 */ addiu $a0,$sp,0x28
/* 4ffb8: e7a40010 */ swc1 $f4,0x10($sp)
/* 4ffbc: e7a60014 */ swc1 $f6,0x14($sp)
/* 4ffc0: e7a80018 */ swc1 $f8,0x18($sp)
/* 4ffc4: 0c013f88 */ jal guFrustumF
/* 4ffc8: e7aa001c */ swc1 $f10,0x1c($sp)
/* 4ffcc: 27a40028 */ addiu $a0,$sp,0x28
/* 4ffd0: 0c0128d8 */ jal guMtxF2L
/* 4ffd4: 8fa50068 */ lw $a1,0x68($sp)
/* 4ffd8: 8fbf0024 */ lw $ra,0x24($sp)
/* 4ffdc: 27bd0068 */ addiu $sp,$sp,0x68
/* 4ffe0: 03e00008 */ jr $ra
/* 4ffe4: 00000000 */ nop
/* 4ffe8: 00000000 */ nop
/* 4ffec: 00000000 */ nop
);
void guFrustum(Mtx *m, float l, float r, float b, float t, float n, float f, float scale)
{
float mf[4][4];
// Mismatch: Goal moves a3 to f16, while this stores it in the stack.
//void guFrustum(Mtx *m, float l, float r, float b, float t, float n, float f, float scale)
//{
// float mf[4][4];
//
// guFrustumF(mf, l, r, b, t, n, f, scale);
//
// guMtxF2L(mf, m);
//}
guFrustumF(mf, l, r, b, t, n, f, scale);
guMtxF2L(mf, m);
}