Extreme-G uses high level commands to define level models' GFX and collision data.

00

Presumably pushes the address of the current display list to some array and ends the current display list.

Emits:

gsSPEndDisplayList()

01 [NN] [XX XX] [YY YY] [ZZ ZZ] [TI] [RR] [GG] [BB] […]

Defines a list of vertices to be used by tri1 and tri2 commands.

TI indexes the level's texture coordinate table to obtain the vertices' S and T texture coordinate values.

Emits:

gsSPVertex(..., NN)

02 [II]

Loads a CI8 or CI4 texture into TMEM. II indexes the level's texture meta table to obtain the texture's CI/TLUT addresses, format, and dimensions. Texture data is obtained from the level's texture file.

Emits (if the current palette needs to be updated):

gsDPSetTextureImage(...)
gsDPTileSync()
gsDPSetTile(...)
gsSPLoadSync()
gsDPLoadTLUT(...)
gsSPPipeSync()

Emits:

gsDPSetTextureImage(...)
gsDPSetTile(...)
gsDPLoadSync()
gsDPLoadBlock(...)
gsDPPipeSync()
gsDPSetTile(...)
gsDPSetTileSize(...)

03 [RR] [GG] [BB]

Sets the RDP's primcolor register.

Emits:

gsDPSetPrimColor(0, 0, 0, RR, GG, BB)

04 [-aaaaabb] [bbbccccc] (bitwise)

Renders a single triangle.

Emits:

gsSP1Triangle(aaaaa, bbbbb, ccccc, 0)

05 [-aaaaabb] [bbbccccc] [-dddddee] [eeefffff] (bitwise)

Renders two triangles.

Emits:

gsSP2Triangles(aaaaa, bbbbb, ccccc, ddddd, eeeee, fffff, 0)

06

Emits:

gsDPPipeSync()
gsDPSetCombineMode(G_CC_MODULATERGBDECALA, G_CC_PASS2) // FC127FFF FFFFF238

07

Emits:

gsDPPipeSync()
gsDPSetCombineMode(PRIMITIVE, 0, SHADE, 0, 0, 0, 0, 1, G_CC_PASS2) // FC327FFF FFFFFC38

08 [NN] [XX XX] [YY YY] [ZZ ZZ] […]

Defines a list of collision vertices.

09 [VI] [TI]

Updates a single vertex's S and T texture coordinate values in the RSP's vertex buffer.

TI indexes the level's texture coordinate table.

Emits:

gsSPModifyVertex(VI, G_MWO_POINT_ST, ((table[TI].s / 2) << 16) | (table[TI].t / 2))

0A

Jump to some display list, unknown purpose. The address of the display list is obtained from 801712E8.

Emits:

gsSPDisplayList(...)

0B

Emits:

gsDPSetCombineMode(PRIMITIVE, 0, SHADE, 0, 0, 0, 0, 1, G_CC_PASS2) // FC327FFF FFFFFC38

This command seems the same as command 07 but without the pipesync.

0C [II]

Loads a CI8 texture into TMEM. II indexes the table in the “global texture” bank to obtain the texture's CI/TLUT addresses, dimensions, and data.

Emits (if the current palette needs to be updated):

gsDPSetTextureImage(...)
gsDPTileSync()
gsDPSetTile(...)
gsSPLoadSync()
gsDPLoadTLUT(...)
gsSPPipeSync()

Emits:

gsDPSetTextureImage(...)
gsDPSetTile(...)
gsDPLoadSync()
gsDPLoadBlock(...)
gsDPPipeSync()
gsDPSetTile(...)
gsDPSetTileSize(...)

0D [II]

Loads a CI8 texture into TMEM. II indexes the table in the level's “common texture” bank to obtain the texture's CI/TLUT addresses, dimensions, and data.

Emits (if the current palette needs to be updated):

gsDPSetTextureImage(...)
gsDPTileSync()
gsDPSetTile(...)
gsSPLoadSync()
gsDPLoadTLUT(...)
gsSPPipeSync()

Emits:

gsDPSetTextureImage(...)
gsDPSetTile(...)
gsDPLoadSync()
gsDPLoadBlock(...)
gsDPPipeSync()
gsDPSetTile(...)
gsDPSetTileSize(...)

(no operation)

(no operation)

• The function responsible for loading a level and parsing these commands is at 8004F954.
• The jump table for the parser's switch statement is at 8004BA98.

Assembly location of each command: