THQ Material (RW Section)

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Revision as of 03:31, 7 December 2023 by Muzzarino (talk | contribs)
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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), Atomic (Extension, see below)
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 Jimmy Neutron: Attack of the Twonkies.

Structure

uint32 header
int32 sectionSize
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;
 }
}