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GPU/Commands: Difference between revisions

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|-
|-
| 0x0002025E
| 0x0002025E
| u32, val<<8. Val3 = GL_TRIANGLES, val5 = GL_TRIANGLE_STRIP, val6 = GL_TRIANGLE_FAN. Val0 and val4 are unknown, these seem to have the same effect.
| u32, val<<8.
| This sets the GL rendering mode.
| This sets the GL rendering mode.
|-
|-
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|-
|-
| 0x000F0227
| 0x000F0227
| u32, bit31 set = indices data-type GL_UNSIGNED_SHORT, clear = GL_UNSIGNED_BYTE. Bits30-0 is the address, where address is relative to VRAM.
| u32
| This specifies the address of an array containing vertex array indices, used for rendering primitives. Each index entry is an u16.
| This specifies the address of an array containing vertex array indices, and the data-type of the indices, used for rendering primitives.
|-
|-
| 0x000F0228
| 0x000F0228
| u32 total elements in the array to use for rendering.
| u32 total elements in the array to use for rendering.
| This command is used immediately after CmdID 0x000F0227. This command and CmdID 0x000F0227 are some of the commands used for glDrawElements().
| This command is used immediately after CmdID 0x000F0227.
|-
|-
| 0x000F02B0
| 0x000F02B0
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| First word in the first entry
| First word in the first entry
| A list of entries follow this command.
| A list of entries follow this command.
|}
==== 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
| 0x20253
| Same as CmdID 0x00020229.
| Unknown
|-
| 3
| 0x0002025E
| u32, val<<8.
| This sets the GL rendering mode.
|-
| 4
| 0x0004025E
| Value 0
| ?
|-
| 5
| 0x000F025F
| Value 1
| ?
|-
| 6
| 0x00010253
| 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
| Value 0
| ?
|-
| 10
| 0x000F022F
| Value 1
| ?
|-
| 11
| 0x00010245
| Value 1
| ?
|-
| 12
| 0x000F0231
| Value 1
| ?
|-
| 13
| 0x000F0111
| Value 1
| ?
|-
| 14
| 0x00020229
| Value 0
| ?
|-
| 15
| 0x00020253
| Value 0
| ?
|-
| 16
| 0x0002025E
| Value 0
| ?
|-
| 17
| 0x000C02BA
| Value 0x7FFF0000
| ?
|}
=== GL mode values for CmdID 0x0002025E ===
{| class="wikitable" border="1"
!  Value
!  Description
|-
| 0
| Unknown
|-
| 1
| GL_TRIANGLE_STRIP
|-
| 2
| GL_TRIANGLE_FAN
|-
| 3
| GL_TRIANGLES
|-
| 4
| Unknown, this seems to have the same effect as value 0.
|}
=== Parameter value format for CmdID 0x000F0227 ===
{| class="wikitable" border="1"
!  Bit
!  Description
|-
| 30-0
| Indices array address, relative to VRAM.
|-
| 31
| 1 = indices data-type GL_UNSIGNED_SHORT, 0 = GL_UNSIGNED_BYTE.
|}
|}


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|-
|-
| 4
| 4
| Texture data physical address >> 3. This is normally located in the VRAM GPU data storage region.
| Texture data physical address >> 3. This is normally located in VRAM.
|-
|-
| 5-9
| 5-9
Retrieved from "https://www.3dbrew.org/wiki/GPU/Commands"