Difference between revisions of "001a8f14 - 001a90cc"
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(Created page with "<font face='Courier New'> 001a8f14: 00802821 addu r5,r4,r0 001a8f18: 3c07801c lui r7,0x801c 001a8f1c: 8ce78a3c lw r7,-0x75c4(r7) 001a8f20: 3c03801c lui r3,0x801c 001a8f...") |
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| − | 001a8f14: 00802821 addu r5,r4,r0 | + | 001a8f14: 00802821 addu r5,r4,r0 #r5 = input pointer to store polygon type data |
001a8f18: 3c07801c lui r7,0x801c | 001a8f18: 3c07801c lui r7,0x801c | ||
| − | 001a8f1c: 8ce78a3c lw r7,-0x75c4(r7) | + | 001a8f1c: 8ce78a3c lw r7,-0x75c4(r7) #801b8a3c* (byte.) |
001a8f20: 3c03801c lui r3,0x801c | 001a8f20: 3c03801c lui r3,0x801c | ||
| − | 001a8f24: 8c638a38 lw r3,-0x75c8(r3) | + | 001a8f24: 8c638a38 lw r3,-0x75c8(r3) #pointer to beginning of non-pointer data in secondary effect? |
001a8f28: 00071080 sll r2,r7,0x02 | 001a8f28: 00071080 sll r2,r7,0x02 | ||
001a8f2c: 00431821 addu r3,r2,r3 | 001a8f2c: 00431821 addu r3,r2,r3 | ||
| − | 001a8f30: 8c620000 lw r2,0x0000(r3) | + | 001a8f30: 8c620000 lw r2,0x0000(r3) #load related data? |
001a8f34: 00000000 nop | 001a8f34: 00000000 nop | ||
| − | 001a8f38: 00022602 srl r4,r2,0x18 | + | 001a8f38: 00022602 srl r4,r2,0x18 #r4 = type of polygon |
| − | 001a8f3c: aca20000 sw r2,0x0000(r5) | + | 001a8f3c: aca20000 sw r2,0x0000(r5) #store r2 word in stack |
001a8f40: 34020035 ori r2,r0,0x0035 | 001a8f40: 34020035 ori r2,r0,0x0035 | ||
| − | 001a8f44: 10820031 beq r4,r2,0x001a900c | + | 001a8f44: 10820031 beq r4,r2,0x001a900c #branch if 4th byte is 0x35 (quad) |
001a8f48: 00a03021 addu r6,r5,r0 | 001a8f48: 00a03021 addu r6,r5,r0 | ||
001a8f4c: 2c820036 sltiu r2,r4,0x0036 | 001a8f4c: 2c820036 sltiu r2,r4,0x0036 | ||
| − | 001a8f50: 10400005 beq r2,r0,0x001a8f68 | + | 001a8f50: 10400005 beq r2,r0,0x001a8f68 #branch if 4th byte is more than 0x35 |
001a8f54: 34020031 ori r2,r0,0x0031 | 001a8f54: 34020031 ori r2,r0,0x0031 | ||
| − | 001a8f58: 1082001a beq r4,r2,0x001a8fc4 | + | 001a8f58: 1082001a beq r4,r2,0x001a8fc4 #branch if 4th byte is 0x31 (quad polygon) |
001a8f5c: 00000000 nop | 001a8f5c: 00000000 nop | ||
| − | 001a8f60: 0806a42b j 0x001a90ac | + | 001a8f60: 0806a42b j 0x001a90ac #otherwise, triggers error (seems delicate) |
001a8f64: 00000000 nop | 001a8f64: 00000000 nop | ||
001a8f68: 34020037 ori r2,r0,0x0037 | 001a8f68: 34020037 ori r2,r0,0x0037 | ||
| − | 001a8f6c: 10820027 beq r4,r2,0x001a900c | + | 001a8f6c: 10820027 beq r4,r2,0x001a900c #branch if 0x37 (tri polygon) |
001a8f70: 34020039 ori r2,r0,0x0039 | 001a8f70: 34020039 ori r2,r0,0x0039 | ||
| − | 001a8f74: 1482004d bne r4,r2,0x001a90ac | + | 001a8f74: 1482004d bne r4,r2,0x001a90ac #branch if not 0x39 (reflect unique polygon) |
001a8f78: 00000000 nop | 001a8f78: 00000000 nop | ||
| − | 001a8f7c: 8c620004 lw r2,0x0004(r3) | + | |
| + | Quad polygon: | ||
| + | 001a8f7c: 8c620004 lw r2,0x0004(r3) #load 2nd word from data | ||
001a8f80: 00000000 nop | 001a8f80: 00000000 nop | ||
| − | 001a8f84: aca20004 sw r2,0x0004(r5) | + | 001a8f84: aca20004 sw r2,0x0004(r5) #store 2nd word into stack |
001a8f88: 8c620008 lw r2,0x0008(r3) | 001a8f88: 8c620008 lw r2,0x0008(r3) | ||
001a8f8c: 00000000 nop | 001a8f8c: 00000000 nop | ||
| − | 001a8f90: aca20008 sw r2,0x0008(r5) | + | 001a8f90: aca20008 sw r2,0x0008(r5) #3rd word into stack |
001a8f94: 8c62000c lw r2,0x000c(r3) | 001a8f94: 8c62000c lw r2,0x000c(r3) | ||
001a8f98: 00000000 nop | 001a8f98: 00000000 nop | ||
| − | 001a8f9c: aca2000c sw r2,0x000c(r5) | + | 001a8f9c: aca2000c sw r2,0x000c(r5) #same deal |
001a8fa0: 8c620010 lw r2,0x0010(r3) | 001a8fa0: 8c620010 lw r2,0x0010(r3) | ||
001a8fa4: 00000000 nop | 001a8fa4: 00000000 nop | ||
| − | 001a8fa8: aca20010 sw r2,0x0010(r5) | + | 001a8fa8: aca20010 sw r2,0x0010(r5) #(all palette data) |
001a8fac: 8c620014 lw r2,0x0014(r3) | 001a8fac: 8c620014 lw r2,0x0014(r3) | ||
001a8fb0: 00000000 nop | 001a8fb0: 00000000 nop | ||
| − | 001a8fb4: aca20068 sw r2,0x0068(r5) | + | 001a8fb4: aca20068 sw r2,0x0068(r5) #store the 6th word a lot deeper into the stack. seems like a special case. contains 2 pointers for vector data? |
| − | 001a8fb8: 8c630018 lw r3,0x0018(r3) | + | 001a8fb8: 8c630018 lw r3,0x0018(r3) #load 7th word |
001a8fbc: 0806a3ff j 0x001a8ffc | 001a8fbc: 0806a3ff j 0x001a8ffc | ||
| − | 001a8fc0: 24e20007 addiu r2,r7,0x0007 | + | 001a8fc0: 24e20007 addiu r2,r7,0x0007 #set this table's entry length as 7 (so the next set of data doesn't reload any duplicate information) |
| + | |||
| + | Tri polygon: | ||
001a8fc4: 8c620004 lw r2,0x0004(r3) | 001a8fc4: 8c620004 lw r2,0x0004(r3) | ||
001a8fc8: 00000000 nop | 001a8fc8: 00000000 nop | ||
| Line 56: | Line 60: | ||
001a8fe8: 8c620010 lw r2,0x0010(r3) | 001a8fe8: 8c620010 lw r2,0x0010(r3) | ||
001a8fec: 00000000 nop | 001a8fec: 00000000 nop | ||
| − | 001a8ff0: aca20068 sw r2,0x0068(r5) | + | 001a8ff0: aca20068 sw r2,0x0068(r5) #store polygon points 1 and 2 |
001a8ff4: 8c630014 lw r3,0x0014(r3) | 001a8ff4: 8c630014 lw r3,0x0014(r3) | ||
| − | 001a8ff8: 24e20006 addiu r2,r7,0x0006 | + | 001a8ff8: 24e20006 addiu r2,r7,0x0006 #Table entry length = 6 |
001a8ffc: 3c01801c lui r1,0x801c | 001a8ffc: 3c01801c lui r1,0x801c | ||
001a9000: ac228a3c sw r2,-0x75c4(r1) | 001a9000: ac228a3c sw r2,-0x75c4(r1) | ||
001a9004: 0806a432 j 0x001a90c8 | 001a9004: 0806a432 j 0x001a90c8 | ||
| − | 001a9008: aca3006c sw r3,0x006c(r5) | + | 001a9008: aca3006c sw r3,0x006c(r5) #store 3rd and 4th polygon points. |
| + | |||
| + | Reflect tri polygon: | ||
001a900c: 3c04801c lui r4,0x801c | 001a900c: 3c04801c lui r4,0x801c | ||
| − | 001a9010: 8c848a3c lw r4,-0x75c4(r4) | + | 001a9010: 8c848a3c lw r4,-0x75c4(r4) #Counter? |
001a9014: 3c02801c lui r2,0x801c | 001a9014: 3c02801c lui r2,0x801c | ||
| − | 001a9018: 8c428a38 lw r2,-0x75c8(r2) | + | 001a9018: 8c428a38 lw r2,-0x75c8(r2) #pointer to start of polygon data |
001a901c: 00041880 sll r3,r4,0x02 | 001a901c: 00041880 sll r3,r4,0x02 | ||
001a9020: 00621821 addu r3,r3,r2 | 001a9020: 00621821 addu r3,r3,r2 | ||
| − | 001a9024: 8c620010 lw r2,0x0010(r3) | + | 001a9024: 8c620010 lw r2,0x0010(r3) #palette data |
001a9028: 00000000 nop | 001a9028: 00000000 nop | ||
| − | 001a902c: acc20004 sw r2,0x0004(r6) | + | 001a902c: acc20004 sw r2,0x0004(r6) |
001a9030: 8c620014 lw r2,0x0014(r3) | 001a9030: 8c620014 lw r2,0x0014(r3) | ||
001a9034: 00000000 nop | 001a9034: 00000000 nop | ||
| Line 77: | Line 83: | ||
001a903c: 8c620018 lw r2,0x0018(r3) | 001a903c: 8c620018 lw r2,0x0018(r3) | ||
001a9040: 00000000 nop | 001a9040: 00000000 nop | ||
| − | 001a9044: acc2000c sw r2,0x000c(r6) | + | 001a9044: acc2000c sw r2,0x000c(r6) #palette stuff |
| − | 001a9048: 8c62001c lw r2,0x001c(r3) | + | 001a9048: 8c62001c lw r2,0x001c(r3) #load 1st & 2nd points |
001a904c: 00000000 nop | 001a904c: 00000000 nop | ||
| − | 001a9050: acc20068 sw r2,0x0068(r6) | + | 001a9050: acc20068 sw r2,0x0068(r6) #1c and 20 have the points for reflect's model |
| − | 001a9054: 8c620020 lw r2,0x0020(r3) | + | 001a9054: 8c620020 lw r2,0x0020(r3) #3rd point. |
001a9058: 00000000 nop | 001a9058: 00000000 nop | ||
| − | 001a905c: acc2006c sw r2,0x006c(r6) | + | 001a905c: acc2006c sw r2,0x006c(r6) #store third point |
001a9060: 9462000a lhu r2,0x000a(r3) | 001a9060: 9462000a lhu r2,0x000a(r3) | ||
001a9064: 00000000 nop | 001a9064: 00000000 nop | ||
| Line 95: | Line 101: | ||
001a9084: 94620008 lhu r2,0x0008(r3) | 001a9084: 94620008 lhu r2,0x0008(r3) | ||
001a9088: 00000000 nop | 001a9088: 00000000 nop | ||
| − | 001a908c: a4a2001a sh r2,0x001a(r5) | + | 001a908c: a4a2001a sh r2,0x001a(r5) #additional palette information? |
001a9090: 9462000c lhu r2,0x000c(r3) | 001a9090: 9462000c lhu r2,0x000c(r3) | ||
| − | 001a9094: 24840009 addiu r4,r4,0x0009 | + | 001a9094: 24840009 addiu r4,r4,0x0009 #increment counter? by 9 (9 table entries here?) |
001a9098: a4a2001c sh r2,0x001c(r5) | 001a9098: a4a2001c sh r2,0x001c(r5) | ||
001a909c: 3c01801c lui r1,0x801c | 001a909c: 3c01801c lui r1,0x801c | ||
| Line 103: | Line 109: | ||
001a90a4: 0806a432 j 0x001a90c8 | 001a90a4: 0806a432 j 0x001a90c8 | ||
001a90a8: 00000000 nop | 001a90a8: 00000000 nop | ||
| + | |||
| + | 4th byte is invalid? | ||
001a90ac: 3c02801c lui r2,0x801c | 001a90ac: 3c02801c lui r2,0x801c | ||
| − | 001a90b0: 8c428a3c lw r2,-0x75c4(r2) | + | 001a90b0: 8c428a3c lw r2,-0x75c4(r2) #counter byte? |
001a90b4: 90a30001 lbu r3,0x0001(r5) | 001a90b4: 90a30001 lbu r3,0x0001(r5) | ||
| − | 001a90b8: 24420001 addiu r2,r2,0x0001 | + | 001a90b8: 24420001 addiu r2,r2,0x0001 #+ 1 |
001a90bc: 00431021 addu r2,r2,r3 | 001a90bc: 00431021 addu r2,r2,r3 | ||
001a90c0: 3c01801c lui r1,0x801c | 001a90c0: 3c01801c lui r1,0x801c | ||
| − | 001a90c4: ac228a3c sw r2,-0x75c4(r1) | + | 001a90c4: ac228a3c sw r2,-0x75c4(r1) #store and try next word if failed |
| + | |||
| + | End: | ||
001a90c8: 03e00008 jr r31 | 001a90c8: 03e00008 jr r31 | ||
001a90cc: 00000000 nop | 001a90cc: 00000000 nop | ||
</font> | </font> | ||
Latest revision as of 08:01, 22 March 2023
001a8f14: 00802821 addu r5,r4,r0 #r5 = input pointer to store polygon type data 001a8f18: 3c07801c lui r7,0x801c 001a8f1c: 8ce78a3c lw r7,-0x75c4(r7) #801b8a3c* (byte.) 001a8f20: 3c03801c lui r3,0x801c 001a8f24: 8c638a38 lw r3,-0x75c8(r3) #pointer to beginning of non-pointer data in secondary effect? 001a8f28: 00071080 sll r2,r7,0x02 001a8f2c: 00431821 addu r3,r2,r3 001a8f30: 8c620000 lw r2,0x0000(r3) #load related data? 001a8f34: 00000000 nop 001a8f38: 00022602 srl r4,r2,0x18 #r4 = type of polygon 001a8f3c: aca20000 sw r2,0x0000(r5) #store r2 word in stack 001a8f40: 34020035 ori r2,r0,0x0035 001a8f44: 10820031 beq r4,r2,0x001a900c #branch if 4th byte is 0x35 (quad) 001a8f48: 00a03021 addu r6,r5,r0 001a8f4c: 2c820036 sltiu r2,r4,0x0036 001a8f50: 10400005 beq r2,r0,0x001a8f68 #branch if 4th byte is more than 0x35 001a8f54: 34020031 ori r2,r0,0x0031 001a8f58: 1082001a beq r4,r2,0x001a8fc4 #branch if 4th byte is 0x31 (quad polygon) 001a8f5c: 00000000 nop 001a8f60: 0806a42b j 0x001a90ac #otherwise, triggers error (seems delicate) 001a8f64: 00000000 nop 001a8f68: 34020037 ori r2,r0,0x0037 001a8f6c: 10820027 beq r4,r2,0x001a900c #branch if 0x37 (tri polygon) 001a8f70: 34020039 ori r2,r0,0x0039 001a8f74: 1482004d bne r4,r2,0x001a90ac #branch if not 0x39 (reflect unique polygon) 001a8f78: 00000000 nop
Quad polygon: 001a8f7c: 8c620004 lw r2,0x0004(r3) #load 2nd word from data 001a8f80: 00000000 nop 001a8f84: aca20004 sw r2,0x0004(r5) #store 2nd word into stack 001a8f88: 8c620008 lw r2,0x0008(r3) 001a8f8c: 00000000 nop 001a8f90: aca20008 sw r2,0x0008(r5) #3rd word into stack 001a8f94: 8c62000c lw r2,0x000c(r3) 001a8f98: 00000000 nop 001a8f9c: aca2000c sw r2,0x000c(r5) #same deal 001a8fa0: 8c620010 lw r2,0x0010(r3) 001a8fa4: 00000000 nop 001a8fa8: aca20010 sw r2,0x0010(r5) #(all palette data) 001a8fac: 8c620014 lw r2,0x0014(r3) 001a8fb0: 00000000 nop 001a8fb4: aca20068 sw r2,0x0068(r5) #store the 6th word a lot deeper into the stack. seems like a special case. contains 2 pointers for vector data? 001a8fb8: 8c630018 lw r3,0x0018(r3) #load 7th word 001a8fbc: 0806a3ff j 0x001a8ffc 001a8fc0: 24e20007 addiu r2,r7,0x0007 #set this table's entry length as 7 (so the next set of data doesn't reload any duplicate information)
Tri polygon: 001a8fc4: 8c620004 lw r2,0x0004(r3) 001a8fc8: 00000000 nop 001a8fcc: aca20004 sw r2,0x0004(r5) 001a8fd0: 8c620008 lw r2,0x0008(r3) 001a8fd4: 00000000 nop 001a8fd8: aca20008 sw r2,0x0008(r5) 001a8fdc: 8c62000c lw r2,0x000c(r3) 001a8fe0: 00000000 nop 001a8fe4: aca2000c sw r2,0x000c(r5) 001a8fe8: 8c620010 lw r2,0x0010(r3) 001a8fec: 00000000 nop 001a8ff0: aca20068 sw r2,0x0068(r5) #store polygon points 1 and 2 001a8ff4: 8c630014 lw r3,0x0014(r3) 001a8ff8: 24e20006 addiu r2,r7,0x0006 #Table entry length = 6 001a8ffc: 3c01801c lui r1,0x801c 001a9000: ac228a3c sw r2,-0x75c4(r1) 001a9004: 0806a432 j 0x001a90c8 001a9008: aca3006c sw r3,0x006c(r5) #store 3rd and 4th polygon points.
Reflect tri polygon: 001a900c: 3c04801c lui r4,0x801c 001a9010: 8c848a3c lw r4,-0x75c4(r4) #Counter? 001a9014: 3c02801c lui r2,0x801c 001a9018: 8c428a38 lw r2,-0x75c8(r2) #pointer to start of polygon data 001a901c: 00041880 sll r3,r4,0x02 001a9020: 00621821 addu r3,r3,r2 001a9024: 8c620010 lw r2,0x0010(r3) #palette data 001a9028: 00000000 nop 001a902c: acc20004 sw r2,0x0004(r6) 001a9030: 8c620014 lw r2,0x0014(r3) 001a9034: 00000000 nop 001a9038: acc20008 sw r2,0x0008(r6) 001a903c: 8c620018 lw r2,0x0018(r3) 001a9040: 00000000 nop 001a9044: acc2000c sw r2,0x000c(r6) #palette stuff 001a9048: 8c62001c lw r2,0x001c(r3) #load 1st & 2nd points 001a904c: 00000000 nop 001a9050: acc20068 sw r2,0x0068(r6) #1c and 20 have the points for reflect's model 001a9054: 8c620020 lw r2,0x0020(r3) #3rd point. 001a9058: 00000000 nop 001a905c: acc2006c sw r2,0x006c(r6) #store third point 001a9060: 9462000a lhu r2,0x000a(r3) 001a9064: 00000000 nop 001a9068: a4a20014 sh r2,0x0014(r5) 001a906c: 94620006 lhu r2,0x0006(r3) 001a9070: 00000000 nop 001a9074: a4a20016 sh r2,0x0016(r5) 001a9078: 94620004 lhu r2,0x0004(r3) 001a907c: 00000000 nop 001a9080: a4a20018 sh r2,0x0018(r5) 001a9084: 94620008 lhu r2,0x0008(r3) 001a9088: 00000000 nop 001a908c: a4a2001a sh r2,0x001a(r5) #additional palette information? 001a9090: 9462000c lhu r2,0x000c(r3) 001a9094: 24840009 addiu r4,r4,0x0009 #increment counter? by 9 (9 table entries here?) 001a9098: a4a2001c sh r2,0x001c(r5) 001a909c: 3c01801c lui r1,0x801c 001a90a0: ac248a3c sw r4,-0x75c4(r1) 001a90a4: 0806a432 j 0x001a90c8 001a90a8: 00000000 nop
4th byte is invalid? 001a90ac: 3c02801c lui r2,0x801c 001a90b0: 8c428a3c lw r2,-0x75c4(r2) #counter byte? 001a90b4: 90a30001 lbu r3,0x0001(r5) 001a90b8: 24420001 addiu r2,r2,0x0001 #+ 1 001a90bc: 00431021 addu r2,r2,r3 001a90c0: 3c01801c lui r1,0x801c 001a90c4: ac228a3c sw r2,-0x75c4(r1) #store and try next word if failed
End: 001a90c8: 03e00008 jr r31 001a90cc: 00000000 nop
