Here are the data structures with brief descriptions:

CC3D_AttrInfo	Vertex attribute info
CC3D_BufCfg	Vertex buffer config
CC3D_BufInfo	Vertex buffer info
CC3D_DEPTHTYPE
CC3D_FogLut
CC3D_FrameBuf
CC3D_FVec	Float vector
CC3D_GasLut
CC3D_Light_t
CC3D_LightConf
CC3D_LightEnv_t
CC3D_LightEnvConf
CC3D_LightLut
CC3D_LightLutDA
CC3D_LightLutInputConf
CC3D_LightMatConf
CC3D_Material	Material
CC3D_Mtx	Row-major 4x4 matrix
CC3D_MtxStack
CC3D_ProcTex
CC3D_ProcTexColorLut
CC3D_RenderTarget_tag
CC3D_Tex	Texture data
CC3D_TexCube	Cubemap texture data
CC3D_TexEnv	TexEnv stage configuration
CTex3DS_SubTexture	Subtexture