.equ vertexTop, 0x3d0
.equ numInAttribs, 4
.equ numOutAttribs, 3
.equ numOutBuf, 2
.equ vertCount, ((vertexTop-numOutBuf)/(numInAttribs*2+numOutAttribs*numOutBuf))
.equ offset, (vertCount*numInAttribs)
.equ outBuf1, (2*offset) 
;.equ outSize, ((vertexTop-outBuf1-numOutBuf)/numOutBuf)
.equ outSize, (1 + vertCount*numOutAttribs)
.equ outBuf2, (outBuf1+outSize) 

.equ clipVertCount, ((vertexTop-outBuf1-numOutBuf)/(numInAttribs+numOutAttribs*numOutBuf))
.equ clipOutSize, (1 + clipVertCount*numOutAttribs)
.equ clipOutBuf2, (outBuf1+clipOutSize)
.equ clipBuf, (clipOutBuf2+clipOutSize)	

; up to 9 verts => 7 tris per poly in worst case, a lot for lists unfortunately
.equ clipVertLimit, (clipVertCount-21)

.include "defines.inc"

.balign 16,0

.global vu1_default_TLclip
vu1_default_TLclip:

DMAret *
MPG 0, *
.vu
start:
	nop				iaddiu vi12,vi00,outBuf1
	nop				iaddiu vi13,vi00,clipOutBuf2
	nop				lq vf28,matrix0(vi00)
	nop				lq vf29,matrix1(vi00)
	nop				lq vf30,matrix2(vi00)
	nop				lq vf31,matrix3(vi00)
	nop				lq vf27,xyzwScale(vi00)
	nop				lq vf26,xyzwOffset(vi00)
	nop				lq vf25,colorScale(vi00)
	nop				lq vf24,clipConsts(vi00)
restart:
	nop				lq vf01,gifTag(vi00)		; GIF tag
	nop				xitop vi01			; vertex count
	nop				iaddiu vi05,vi00,0x4000
	nop				iadd vi05,vi05,vi05		; EOP bit
	nop				ior vi05,vi05,vi01		; enter vertex count
	nop				sq vf01,0(vi12)			; store GIF tag
	nop				isw.x vi05,0(vi12)
	nop				iaddiu vi03,vi12,1		; output pointer


;; Convert normals and colors to float. this is also where we'd do skinning probably
;; also clear ADC flag here but eventually this shouldn't happen if the geomtry has none
	nop				xtop vi02			; input pointer
	nop				xitop vi01			; vertex count
PreprocLoop:
	nop				lq vf02,2(vi02)			; load rgba
	nop				lq.xyz vf03,3(vi02)		; load normal
	nop				mr32.w vf01,vf00		; clear ADC flag
	nop				nop
	itof0 vf02,vf02			loi 0.007874015748031496	; convert rgba
	itof0.xyz vf03,vf03		nop				; convert normal
	nop				nop
	nop				nop
	nop				nop
	muli.xyz vf03,vf03,i		nop				; scale normal
	nop				sq.w vf01,0(vi02)		; store cleared ADC flag
	nop				isubiu vi01,vi01,1
	nop				sq vf02,2(vi02)			; store rgba
	nop				sq.xyz vf03,3(vi02)		; store normal
	nop				ibne vi01,vi00,PreprocLoop
	nop				iaddiu vi02,vi02,numInAttribs

.include "lighting.vu"

.include "TLclip.vu"

	nop[e]				nop
	nop				nop
	nop				b restart
	nop				nop

.include "cliptri.vu"
.include "default_clipproc.vu"

.EndMPG
.EndDmaData