GPU/Commands

This page describes the structure of the buffer for GX command 1 with the registers at 0x1EF018E0. This buffer is used for GPU commands including OpenGL commands, each 8-byte entry in the buffer is a command. Cmd+0 is the command parameter, and cmd+4 is the cmdID.

Commands

CommandID	Parameter	Description
0x000F0010	Value is 0x12345678	This command is always the last command in the buffer.
0x000F0110	Value 0x1	This command is immediately before CmdID 0x000F0010, this is used elsewhere in the buffer as well.
0x000F0111	Value 0x1	This command is immediately before CmdID 0x000F0110, however CmdID 0x000F0110 doesn't always follow this command.
0x000F0042	float y vector	This sets Y scaling for the current matrix.
0x000F0044	float x vector	This sets X scaling for the current matrix.
0x000F02C0	0x80000000 | ID? When bit31 is clear, the specified vertices are not rendered via CmdID 0xXXXF02C1.	This is used immediately before CmdID 0xXXXF02C1.
0xXXXF02C1	float X coordinate for the first vertex	CmdID is 0x000F02C1 | ((totalvertices<<22) - 0x100000). The vertex entries is the data following the command. The first word in the first vertex entry is the Y coordinate.

Vertex Entry

Index Word	Description
0	float X coordinate, for the first vertex this is stored in the command parameter instead.
1	float Y coordinate
2	float Z coordinate
3	Padding for the last vertex entry