View source for War Drum OpenGL Native Data

This page describes the format of pre-instanced DFFs as used by the mobile GTA games.

==Bin Mesh==
The [[Bin_Mesh_PLG_(RW_Section)|Bin Mesh]]'s chunk format is almost the same as in non-instanced DFFs. The only difference is that the indices are uint16 (as used internally by RW) instead of uint32.

==Native Data==

The Native Data has no child Struct like on the other platforms and not platform information.

 uint32       number of attributes (numAttribs)
 #repeat for numAttribs (attribute description)
     uint32   attribute index
     int32    type (0 = GL_FLOAT, 1 = GL_BYTE, 2 = GL_UNSIGNED_BYTE, 3 = GL_SHORT, 4 = GL_UNSIGNED_SHORT)
     bool32   isNormalized
     int32    size
     uint32   stride (same for all attributes)
     uint32   offset
 #endrepeat
 uint8        data[stride*geometry->numVertices]

Apart from the type, attribute descriptions can be directly passed to [https://www.khronos.org/opengles/sdk/docs/man/xhtml/glVertexAttribPointer.xml glVertexAttribPointer].

=== Indices ===

Each vertex attribute in an OpenGL shader has an index. The indices used by the mobile GTAs are the following:

 0 - vertex position
 1 - tex coord 0
 2 - normal
 3 - color
 4 - vertex weights (only used with skinned geometry)
 5 - bone indices (only used with skinned geometry)
 6 - extra color (only used with SA's extra color plugin)

== Skin ==

The Skin chunk contains a Struct chunk with the following data:

 uint32   platform ID (2 for OpenGL)
 uint32   number of Bones (numBones)
 float32  matrices[numBones][16]

== See also ==
* [[RenderWare|RenderWare]]
* [[Geometry (RW Section)|Geometry]]
* [[Bin Mesh PLG (RW Section)|Bin Mesh]]
* [[Native Data PLG (RW Section)|Native Data]]
* [[Skin PLG (RW Section)|Skin]]