THQ Material (RW Section)

THQ Material (Custom)
RenderWare Stream Section
Vendor	THQ
Module	Plug-In
Module ID	0x00CAFE
Identifier	0x45
Chunk ID	0x00CAFE45
Versions	All
Hierarchy
Parents: Material (Extension), THQ Atomic (Extension)
Children: None
Extensions: None
File Format

The custom material extension was developed by THQ to attach geometric rendering properties to a material, using alpha referencing, z-test flags, blend functions, and culling, used for the known game The Adventures of Jimmy Neutron Boy Genius: Attack of the Twonkies.

Structure

uint32 header
int32 sectionSize // Usually 4.
uint32 renderProps
 
void THQMaterial(void)
{
 int32 AlphaTestFunc
 int32 AlphaTestRef
 bool ZTest
 bool ZWrite
 int32 SrcBlend
 int32 DestBlend
 int32 FaceCullMode
 bool AlphaEnabled
 
 AlphaTestFunc = (renderProps & 0x7800) >> 11;
 AlphaTestRef = (renderProps & 0x7F8000) >> 15;
 ZTest = (renderProps & 0x800000) >> 17;
 SrcBlend = (renderProps & 0x78) >> 3;
 DstBlend = (renderProps & 0x780) >> 7;
 FaceCullIndex = renderProps & 0x7;
 
 if (DstBlend == (void *)rwBLENDZERO)
   AlphaEnabled = FALSE
 else
 {
   AlphaEnabled = TRUE
   
   if (renderProps & 0x4000000)
      FaceCullIndex = (void *)rwCULLMODECULLNONE;
 }
}