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| − | This page describes the structure of the buffer for [[GX_Commands|GX command]] 1 with the registers at [[GPU|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.
| + | Merged with [[GPU/Internal_Registers]] |
| − | | |
| − | === Commands ===
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| − | {| class="wikitable" border="1"
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| − | ! CommandID
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| − | ! Parameter
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| − | ! Description
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| − | |-
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| − | | 0x000F0010
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| − | | Value is 0x12345678
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| − | | This command is always the last command in the buffer.
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| − | |-
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| − | | 0x000F0110
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| − | | Value 0x1
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| − | | This command is immediately before CmdID 0x000F0010, this is used elsewhere in the buffer as well.
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| − | |-
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| − | | 0x000F0111
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| − | | Value 0x1
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| − | | This command is immediately before CmdID 0x000F0110, however CmdID 0x000F0110 doesn't always follow this command.
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| − | |-
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| − | | 0x000F0042
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| − | | float y vector
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| − | | This sets Y scaling for the current matrix.
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| − | |-
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| − | | 0x000F0044
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| − | | float x vector
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| − | | This sets X scaling for the current matrix.
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| − | |-
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| − | | 0x000F02C0
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| − | | <nowiki>0x80000000 | Unknown</nowiki>
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| − | | This is used immediately before CmdID 0xXXXF02C1.
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| − | |-
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| − | | 0xXXXF02C1
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| − | | float X coordinate for the first vertex
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| − | | CmdID is <nowiki>0x000F02C1 | ((totalvertices<<22) - 0x100000).</nowiki> The vertex entries is the data following the command. The first word in the first vertex entry is the Y coordinate.
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| − | |}
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| − | | |
| − | === Vertex Entry ===
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| − | {| class="wikitable" border="1"
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| − | ! Index Word
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| − | ! Description
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| − | |-
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| − | | 0
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| − | | float X coordinate, for the first vertex this is stored in the command parameter instead.
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| − | |-
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| − | | 1
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| − | | float Y coordinate
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| − | |-
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| − | | 2
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| − | | float Z coordinate
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| − | |-
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| − | | 3
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| − | | Padding for the last vertex entry
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| − | |}
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Latest revision as of 08:06, 5 December 2015