Rockstar PS2 pipelines

In GTA San Andreas for PS2 Rockstar used RenderWare's Pipeline Delivery System (RpPDS) that was introduced with RW 3.5 to create custom pipelines. This page is about Rockstar's custom pipelines specifically, PS2 pipelines in general are (not yet) described elsewhere.

All of these pipelines are initialized in init.pm/nm (see PS2 Code Overlay) so the addresses below are only valid if the init code has been loaded into memory. Addresses refer to SLES_525.41 and init.pm.

All object pipelines have even IDs, material pipelines have odd IDs.

PDS Templates

Building Pipelines

All of these pipelines use the building VU1 code.

 53F20080 (template @ 8A3000)
   matGroup: 53F20081

 53F20081 (template @ 8A2F70)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6E00400D (R* rgba)
   stride: 3
   vertexCount: 0x51
   primCount:   0x1B
   vifOffset:   0xF3

 53F20082 (template @ 8A30B0)
   matGroup: 53F20083

 53F20083 (template @ 8A3020)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6D00400D (R* rgba2)
   stride: 3
   vertexCount: 0x51
   primCount:   0x1B
   vifOffset:   0xF3

 53F2008C (unused by DFFs, template @ 8A3160)
   matGroup: 53F2008D

 53F2008D (used with 53F20080, template @ 8A30D0)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6E00400D (R* rgba)
             9 6E00000D (R* normal)
   stride: 4
   vertexCount: 0x38
   primCount:   0x12
   vifOffset:   0xE0

 53F2008E (unused by DFFs, template @ 8A3210)
   matGroup: 53F2008F

 53F2008F (used with 53F20082, template @ 8A3180)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6D00400D (R* rgba2)
             9 6E00000D (R* normal)
   stride: 4
   vertexCount: 0x38
   primCount:   0x12
   vifOffset:   0xE0

 53F20090 (unused by DFFs, template @ 8A32C0)
   matGroup: 53F20091

 53F20091 (unused by DFFs, template @ 8A3230)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6E00400D (R* rgba)
   stride: 3
   vertexCount: 0x50
   primCount:   0x1A
   vifOffset:   0xF0

 53F20092 (unused by DFFs, template @ 8A3370)
   matGroup: 53F20093

 53F20093 (unused by DFFs, template @ 8A32E0)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6D00400D (R* rgba2)
   stride: 3
   vertexCount: 0x50
   primCount:   0x1A
   vifOffset:   0xF0

Vehicle Pipelines

All of these pipelines use the vehicle VU1 code.

 53F20084 (template @ 8A2F50)
   matGroup: 53F20084

This pipeline does not render any reflection effects:

 53F20085 (template @ 8A2EC0)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6E00401C (not instanced)
             9 6E00000D (R* normal)
   stride: 4
   vertexCount: 0x45
   primCount:   0x17
   vifOffset:   0x114

 53F20086 (unused by DFFs, template @ 8A2E00)
   matGroup: -

This pipeline renders environment maps (and specular maps):

 53F20087 (use with 53F20084, template @ 8A2CE0)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6E00401C (not instanced)
             9 6E00000D (R* normal)
   stride: 4
   vertexCount: 0x38
   primCount:   0x12
   vifOffset:   0xE0

This pipeline renders x-environment maps (and specular maps):

 53F2008B (use with 53F20084, template @ 8A2D70)
   clusters: 6 6D00000D (R* xyzw)
             7 6D00000D (R* uv2)
             8 6E00401C (not instanced)
             9 6E00000D (R* normal)
   stride: 4
   vertexCount: 0x38
   primCount:   0x12
   vifOffset:   0xE0

Skin Pipelines

This pipeline uses the skin VU1 code.

 53F20088 (template @ 6275A0)
   matGroup: 53F20089

 53F20089 (template @ 627510)
   clusters: 6 6D00000D (R* xyzw)
             7 6500000D (R* uv)
             8 6E00000D (R* normal)
             9 6C00000D (skin data)
   stride: 4
   vertexCount: 0x2e
   primCount:   0x10
   vifOffset:   0xC0

Data format and VU1 code

Normals are scaled by 128, UV coordinates by 4096.

Vertices are scaled by 128 in the building code, otherwise by 1024.

The W field of the xyzw cluster is 0x0000 or 0x8000 and written to the ADC field of the XYZF register. 0x8000 inhibits the draw kick for this vertex.

For each vertex skin value the lower 10 bits are the bone matrix offset, the upper 22 bits are the upper part of an IEEE-float. The bone matrix offset can be converted to a bone index like this: i = off == 0 ? 0 : off/4 - 1

VU code binary: Building Vehicle Skin

VU code disassembled: Building Vehicle Skin

(NB: the disassembler has a bug and always disassembles div instructs as 'div q,vf00w,vf00x')