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| This page describes the [[GPU_Commands|GPU commands]] used for OpenGL arrays.
| | Merged into [[GPU/Programming_Guide]]. |
| | |
| ==== Command Sets ====
| |
| | |
| ===== glDrawElements() =====
| |
| {| class="wikitable" border="1"
| |
| ! Command Index
| |
| ! CommandID
| |
| ! Parameter
| |
| ! Description
| |
| |-
| |
| | 0
| |
| | 0x00020229
| |
| | u32, val<<8.
| |
| | Unknown, val is 0 or 1.
| |
| |-
| |
| | 1-2
| |
| | 0x00020253
| |
| | Same as CmdID 0x00020229.
| |
| | Unknown
| |
| |-
| |
| | 3
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| | 0x0002025E
| |
| | u32, val<<8.
| |
| | This sets the GL rendering mode.
| |
| |-
| |
| | 4
| |
| | 0x0004025E
| |
| | Value 0
| |
| | ?
| |
| |-
| |
| | 5
| |
| | 0x000F025F
| |
| | Value 1
| |
| | ?
| |
| |-
| |
| | 6
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| | 0x00010253
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| | Value 0
| |
| | ?
| |
| |-
| |
| | 7
| |
| | 0x000F0227
| |
| | u32
| |
| | This specifies the indices data-type, and the indices array address.
| |
| |-
| |
| | 8
| |
| | 0x000F0228
| |
| | u32
| |
| | This specifies the number of elements in the array to use for rendering.
| |
| |-
| |
| | 9
| |
| | 0x00010245
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| | Value 0
| |
| | ?
| |
| |-
| |
| | 10
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| | 0x000F022F
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| | Value 1
| |
| | ?
| |
| |-
| |
| | 11
| |
| | 0x00010245
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| | Value 1
| |
| | ?
| |
| |-
| |
| | 12
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| | 0x000F0231
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| | Value 1
| |
| | ?
| |
| |-
| |
| | 13
| |
| | 0x000F0111
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| | Value 1
| |
| | ?
| |
| |-
| |
| | 14
| |
| | 0x00020229
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| | Value 0
| |
| | ?
| |
| |-
| |
| | 15
| |
| | 0x00020253
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| | Value 0
| |
| | ?
| |
| |-
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| | 16
| |
| | 0x0002025E
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| | Value 0
| |
| | ?
| |
| |-
| |
| | 17
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| | 0x000C02BA
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| | Value 0x7FFF0000
| |
| | ?
| |
| |}
| |
| | |
| ===== CmdID 0x826F0200 =====
| |
| {| class="wikitable" border="1"
| |
| ! Command Index
| |
| ! CommandID
| |
| ! Parameter
| |
| ! Description
| |
| |-
| |
| | 0
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| | 0x826F0200
| |
| |
| |
| | This sets the addresses for the GL arrays.
| |
| |-
| |
| | 1
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| | 0x801F02BB
| |
| |
| |
| | ?
| |
| |-
| |
| | 2
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| | 0x803F0232
| |
| |
| |
| | Unknown, this command is used multiple times for specifying each parameter-buffer entry.
| |
| |}
| |
| | |
| === GL mode values for CmdID 0x0002025E ===
| |
| {| class="wikitable" border="1"
| |
| ! Value
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| ! Description
| |
| |-
| |
| | 0
| |
| | ?
| |
| |-
| |
| | 1
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| | GL_TRIANGLE_STRIP
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| |-
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| | 2
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| | GL_TRIANGLE_FAN
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| |-
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| | 3
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| | GL_TRIANGLES
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| |-
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| | 4
| |
| | Unknown, this seems to have the same effect as value 0.
| |
| |}
| |
| | |
| === Parameter value format for CmdID 0x000F0227 ===
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| {| class="wikitable" border="1"
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| ! Bit
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| ! Description
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| |-
| |
| | 30-0
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| | Indices array address, relative to VRAM physical address 0x18000000. Thus, when this relative address is 0x08XXXXXX, the array is located in FCRAM.
| |
| |-
| |
| | 31
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| | 0 = indices data-type GL_UNSIGNED_BYTE, 1 = GL_UNSIGNED_SHORT.
| |
| |}
| |
| | |
| === Parameter structure for CmdID 0x826F0200 ===
| |
| {| class="wikitable" border="1"
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| ! Index Word
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| ! Description
| |
| |-
| |
| | 0x0
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| | Base physical address >> 3, normally located in VRAM.
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| |-
| |
| | 0x1
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| | Every 4 bits is used for specifying the array data-type and size for each entry.
| |
| |-
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| | 0x2
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| | Value is: <nowiki>(0xF0000000 + (val<<28)) | (((0xFF<<totalentries) & 0xFF)<<16)</nowiki>.
| |
| |-
| |
| | 0x3-0x26
| |
| | 12 entries, each entry is 3 words.
| |
| |}
| |
| | |
| These parameters and the entries' parameters are set by gl*Pointer().
| |
| | |
| ==== Entry structure ====
| |
| {| class="wikitable" border="1"
| |
| ! Index Word
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| ! Description
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| |-
| |
| | 0
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| | Physical address, relative to the base address.
| |
| |-
| |
| | 1
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| | Entry index
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| |-
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| | 2
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| | Value is: <nowiki>0x10000000 | (arraytype<<16).</nowiki>
| |
| |}
| |
| | |
| When the entry is unused, the entry data is all-zero.
| |
| | |
| ===== Entry array types =====
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| {| class="wikitable" border="1"
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| ! Type
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| ! Description
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| |-
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| | 0x2
| |
| | ?
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| |-
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| | 0x3
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| | Normals array
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| |-
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| | 0x4
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| | Texture coordinates array
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| |-
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| | 0xC
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| | Vertex array
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| |-
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| | 0x10
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| | Color array
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| |}
| |
| | |
| ===== Array data-type/size values =====
| |
| {| class="wikitable" border="1"
| |
| ! Value
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| ! GL type
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| |-
| |
| | 0x0 + ((size-1)*4)
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| | GL_BYTE
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| |-
| |
| | 0x1 + ((size-1)*4)
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| | GL_UNSIGNED_BYTE
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| |-
| |
| | 0x2 + ((size-1)*4)
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| | GL_UNSIGNED_SHORT/GL_SHORT
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| |-
| |
| | 0x3 + ((size-1)*4)
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| | GL_FLOAT
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| |}
| |
| | |
| Size is 1-4. Using GL_FLOAT with a texture coordinates array causes the GPU to hang?
| |
| | |
| === Parameter structure for CmdID 0x801F02BB ===
| |
| {| class="wikitable" border="1"
| |
| ! Index Word
| |
| ! Description
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| |-
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| | 0-1
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| | u64, every 4-bits is a value from some array.
| |
| |}
| |
| | |
| === Parameter structure for CmdID 0x803F0232 ===
| |
| {| class="wikitable" border="1"
| |
| ! Index Word
| |
| ! Description
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| |-
| |
| | 0
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| | Entry index + total CmdID 0x826F0200 parameter-buffer entries.
| |
| |-
| |
| | 1
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| | Unknown, usually value 0x3F000000 ( 0.5f ).
| |
| |-
| |
| | 2
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| | Unknown, usually value 0.
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| |-
| |
| | 3
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| | Unknown, usually value 0.
| |
| |}
| |
| | |
| Each parameter buffer for CmdID 0x803F0232 is an entry loaded from an array.
| |