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;-----------------------------------------------------------------------------;; Monolith 6. Perspective Correct Nearest Gouraud Modulated; Z buffer (LE or GT) 565.;; Globals (ATTENTION);; StackPos - stack pos holder; uSpans - Number of spans to process; iSurfaceStep - what to add to screen pointer; iZStep - what to add to Z buffer pointer; uPix - Pixel Count;; Changes from general MMX code.; 1) Convert directly from 565 to internal format to remove; extra unpack. Remove alpha set.; 2) Didnt need to save texture color or blended color so these; are kept in registers.; 3) All calls and jumps were removed.; 4) Removed alpha masking in in modulate code.; 5) Change registers usage to prevent extra moves.;;-----------------------------------------------------------------------------
INCLUDE iammx.incINCLUDE offs_acp.inc
; Names are read LSB to MSB, so B5G6R5 means five bits of blue starting; at the LSB, then six bits of green, then five bits of red.
;TBD check to see if this value is correct.COLOR_SHIFT equ 8
.586.model flat
.data
EXTERN IncHighandLow16:MMWORD EXTERN UFracVFracMask:MMWORD EXTERN UV32to15Mask:MMWORD EXTERN Makelow16one:MMWORD EXTERN MaskKeepUValues:MMWORD EXTERN MaskKeepVValues:MMWORD EXTERN UFrac:MMWORD EXTERN VFrac:MMWORD EXTERN Zero:MMWORD EXTERN memD3DTFG_POINT:MMWORD EXTERN GiveUp:MMWORD EXTERN LastW:MMWORD EXTERN Val0x000a000a:MMWORD EXTERN Val0xffff:MMWORD EXTERN Val0x0000002000000020:MMWORD EXTERN Val0x0000ffff0000ffff:MMWORD
opt_MaskRed565to888 MMWORD 000000000000F800H
EXTERN MaskRed565to888:MMWORDEXTERN MaskGreen565to888:MMWORDEXTERN MaskBlue565to888:MMWORD
EXTERN MaskRed555to888:MMWORDEXTERN MaskGreen555to888:MMWORDEXTERN MaskBlue555to888:MMWORD
EXTERN MaskAlpha1555to8888:MMWORDEXTERN MaskRed1555to8888:MMWORDEXTERN MaskGreen1555to8888:MMWORDEXTERN MaskBlue1555to8888:MMWORD
EXTERN SetAlphato0xffff:MMWORDEXTERN SetAlphato0xff:MMWORD
RedShift565to888 equ 8GreenShift565to888 equ 5BlueShift565to888 equ 3
RedShift555to888 equ 9GreenShift555to888 equ 6BlueShift555to888 equ 3
AlphaShift1555to8888 equ 16RedShift1555to8888 equ 9GreenShift1555to8888 equ 6BlueShift1555to8888 equ 3
EXTERN Zero:MMWORD
EXTERN DW_One_One:MMWORD
EXTERN MaskOffAlpha:MMWORDEXTERN ShiftTA:MMWORDEXTERN Val0x00ff00ff00ff00ff:MMWORDEXTERN Val0x000000ff00ff00ff:MMWORDEXTERN Val0X0000000001000000:MMWORDEXTERN AlphaVal128:MMWORDEXTERN RGBVal128:MMWORD
EXTERN g_uDitherValue:MMWORD EXTERN SetAlphato0xff:MMWORD EXTERN u888to565RedBlueMask:MMWORD EXTERN u888to565GreenMask:MMWORD EXTERN u888to565Multiplier:MMWORD EXTERN uVal0x000007ff03ff07ff:MMWORD EXTERN uVal0x0000078003c00780:MMWORD EXTERN u888to555RedBlueMask:MMWORD EXTERN u888to555GreenMask:MMWORD EXTERN u888to555Multiplier:MMWORD EXTERN uVal0x000007ff07ff07ff:MMWORD EXTERN uVal0x0000078007800780:MMWORD
; Span VariablesStackPos dd ?uSpans dd ?;-----------------------------------------------------------------------------; Loop Variables
iSurfaceStep dd ?iZStep dd ?uPix dd ?
;-----------------------------------------------------------------------------
.code
PUBLIC _MMXMLRast_6_MMXMLRast_6:
push ebp mov StackPos, esp mov eax, esp sub esp, 0Ch ; This will need to change if stack frame size changes. push ebx push esi push edi
; Put pCtx into ebx mov ebx, [eax+8]
;PD3DI_RASTPRIM pP = pCtx->pPrim; mov ecx, [ebx+RASTCTX_pPrim]
;while (pP) ;{PrimLoop: cmp ecx, 0 je ExitPrimLoop
;UINT16 uSpans = pP->uSpans; movzx eax, word ptr [ecx+RASTPRIM_uSpans] mov uSpans, eax
;PD3DI_RASTSPAN pS = (PD3DI_RASTSPAN)(pP + 1); mov ebp, ecx add ebp, SIZEOF_RASTPRIM
;while (uSpans-- > 0) ;{SpanLoop: mov edx, uSpans mov eax, edx dec eax mov uSpans, eax test edx, edx jle ExitSpanLoop
;pCtx->pfnBegin(pCtx, pP, pS);
;-----------------------------------------------------------------------------; LoopAny code inserted here. This is to get rid of an extra; jump.;-----------------------------------------------------------------------------
; Setup Code begins
; get values to iterate
;uPix = pS->uPix; movzx eax, word ptr [ebp+RASTSPAN_uPix] mov uPix, eax
;pCtx->SI.iDW = 0x0; mov dword ptr [ebx+RASTCTX_SI+SPANITER_iDW], 0
mov esi, [ebp+RASTSPAN_iW] movq mm5, MMWORD PTR [ebp+RASTSPAN_iUoW1]
;pCtx->SI.iUd_TexNum = d_WTimesUVoW(pS->iW,pS->iUoW1); ;pCtx->SI.iVd_TexNum = d_WTimesUVoW(pS->iW,pS->iVoW1); pslld mm5, 8 shl esi, 4 movd eax, mm5 psrlq mm5, 32 imul esi mov [ebx+RASTCTX_SI+SPANITER_iU1], edx movd eax, mm5 imul esi mov [ebx+RASTCTX_SI+SPANITER_iV1], edx
;if (pP->iDOoWDX > 0) ;{ cmp dword ptr [ecx+RASTPRIM_iDOoWDX], 0 jg SpecialWLastMonTest ;// iSpecialW should be negative for the first 3 pixels of span ;pCtx->SI.iSpecialW = -3; mov word ptr [ebx+RASTCTX_SI+SPANITER_iSpecialW], -3 jmp DoneSpecialWifMonTest ;} ;else ;{SpecialWLastMonTest: ;// iSpecialW should be negative for the last 3 pixels of span ;pCtx->SI.iSpecialW = 0x7fff - uPix; mov eax, 07fffh sub eax, uPix ;pCtx->SI.iSpecialW += 5; // this may wrap, but it should add eax, 5 mov [ebx+RASTCTX_SI+SPANITER_iSpecialW], eax ;}DoneSpecialWifMonTest:
;if (pP->uFlags & D3DI_RASTPRIM_X_DEC) ;{ mov eax, [ecx+RASTPRIM_uFlags] and eax, D3DI_RASTPRIM_X_DEC test eax, eax jz LeftToRightSpan ;iZStep = -pCtx->iZStep; mov eax, [ebx+RASTCTX_iZStep] neg eax mov iZStep, eax ;iSurfaceStep = -pCtx->iSurfaceStep; mov eax, [ebx+RASTCTX_iSurfaceStep] neg eax mov iSurfaceStep, eax ;} jmp DoneSpanDirif ;else ;{LeftToRightSpan: ;iZStep = pCtx->iZStep; mov eax, [ebx+RASTCTX_iZStep] mov iZStep, eax ;iSurfaceStep = pCtx->iSurfaceStep; mov eax, [ebx+RASTCTX_iSurfaceStep] mov iSurfaceStep, eax ;}DoneSpanDirif:
; Setup Code Ends; ----------------------------------------------------------------------------------------------------------------; Loop Code Begins
PixelLoop: ; Ztestcode ; edx is uZ ; eax is uZB ; 16 bit unsigned format ;UINT16 uZ = (UINT16)(pS->uZ>>15); ;UINT16 uZB = *((UINT16*)pS->pZ); mov edx, [ebp+RASTSPAN_uZ] movd mm4, edx mov esi, [ebp+RASTSPAN_pZ] shr edx, 15 movzx eax, word ptr [esi]
;pS->uZ += pP->iDZDX; ;if ((pCtx->iZXorMask)^(uZ > uZB)) ; !(uZ > uZB) <==> ; (uZ <= uZB) <==> ; (uZ < uZB+1) <==> ; sub eax, edx paddd mm4, [ecx+RASTPRIM_iDZDX] movd [ebp+RASTSPAN_uZ], mm4 xor eax, [ebx+RASTCTX_iZXorMask] test eax, eax js FailLabel
mov word ptr [esi], dx ; texturecode
mov esi, [ebx+RASTCTX_pTexture]
movq mm5, MMWORD PTR Val0x000a000a ; This is TEX_FINAL_SHIFT - 6 = 10.
movd mm4, [esi+SPANTEX_iShiftU] psubw mm5, mm4 movq mm4, mm5 pand mm5, MMWORD PTR Val0xffff
psrld mm4, 16
movd mm1, [ebx+RASTCTX_SI+SPANITER_iU1] psrad mm1, mm5 movd mm2, [ebx+RASTCTX_SI+SPANITER_iV1] psrad mm2, mm4
punpckldq mm1, mm2
movzx edx, word ptr [esi+SPANTEX_iShiftPitch] add edx, 16 movd mm2, edx movq mm5, MMWORD ptr Makelow16one pslld mm5, mm2
por mm5, MMWORD ptr Makelow16one
psrad mm1, 6
packssdw mm1, mm1 ; Value needs to be packed since all wrap/mirror
movd mm0, [esi+SPANTEX_uMaskU] ; Load U and V mask
movq mm7, mm1 movd mm4, [esi+SPANTEX_iFlipMaskU]
pand mm7, mm4
pcmpeqw mm7, MMWORD PTR Zero pandn mm7, mm0 pand mm1, mm0 pxor mm1, mm7
pmaddwd mm1, mm5 mov edi, [esi+SPANTEX_pBits] movd eax, mm1
movzx eax, word ptr [edi+2*eax]
; got rid of the pupack with zero ; in color conversion. movd mm1, eax ; Make two more copies of input color movq mm2, mm1 pand mm1, dword ptr MaskGreen565to888 pand mm2, dword ptr opt_MaskRed565to888 psllq mm2, 24 psllq mm1, 13 shl eax, 3 por mm1, mm2 and eax, 0FFH movd mm2, eax por mm2, mm1
;modulate
movq mm1, [ebp+RASTSPAN_uB] psrlw mm1, COLOR_SHIFT ; COLOR_SHIFT is set to 8. pmullw mm1, mm2
;write
mov edi, [ebp+RASTSPAN_pSurface]
psrlw mm1, 8 ; Convert color1 from 8.8 two 0.8 packuswb mm1, mm7 ; pack one color movq mm3, mm1 pand mm1, MMWORD PTR u888to565RedBlueMask pmaddwd mm1, MMWORD PTR u888to565Multiplier pand mm3, MMWORD PTR u888to565GreenMask por mm1, mm3 psrld mm1, 5
movd edx, mm1 mov [edi], dx
FailLabel:
dec uPix ;// BUG BUG?? uPix should never start as zero should it?
jle ExitPixelLoop
movq mm1, [ebp+RASTSPAN_uB] paddw mm1, [ecx+RASTPRIM_iDBDX] movq [ebp+RASTSPAN_uB], mm1
movq mm5, [ebp+RASTSPAN_iUoW1] paddd mm5, [ecx+RASTPRIM_iDUoW1DX] movq [ebp+RASTSPAN_iUoW1], mm5
xor eax, eax mov ax, [ebp+RASTSPAN_iLOD] add ax, [ebp+RASTSPAN_iDLOD] mov [ebp+RASTSPAN_iLOD], ax
mov eax, [ebp+RASTSPAN_iOoW] add eax, [ecx+RASTPRIM_iDOoWDX] mov [ebp+RASTSPAN_iOoW], eax
mov edx, [ebp+RASTSPAN_iW] mov LastW, edx ; Save iW to calc iDW for next time. add edx, [ebx+RASTCTX_SI+SPANITER_iDW]
xor edi, edi cmp di, word ptr [ebx+RASTCTX_SI+SPANITER_iSpecialW] jle DontDoSpecialW1
cmp edx, edi jl WOutOfRange1
mov edx, LastW sar edx, 1WOutOfRange1:
mov GiveUp, 8 ; Pre decrementing instead of post decrementing.
SpecW1Loop1:
dec GiveUp jz ExitSpecWLoop1
mov esi, (1 SHL 16) mov edi, edx imul edx sub esi, edx
SpecW1Loop2: test esi, esi jns SpecW1ExitLoop2 ; This jump should be predicted correctly most of the time. add esi, (1 SHL 15) sar esi, 1 jmp SpecW1Loop2
SpecW1ExitLoop2:
mov eax, edi
shl eax, 5 ; 1.15.16 << 5 = 1.10.21 TBD Can I shift off upper bits?? shl esi, 12 ; 4.15 << 12 = 4.27 ;
mul esi sub edi, edx
mov eax, edi sar eax, 31 xor edi, eax sub edi, eax
cmp edi, 020h ;Assuming that loop will only happen once. jbe ExitSpecWLoop1
mov eax, [ebp+RASTSPAN_iOoW] jmp SpecW1Loop1
DontDoSpecialW1: mov esi, (1 SHL 16) mov edi, edx mul edx sub esi, edx shl esi, 15 mov eax, esi
mul edi ; 0.2.30 * 1.15.16 = 1.17.46 >> 32 = 1.17.14 shl edx, 2 ; 1.17.14 << 2 = 1.15.16
ExitSpecWLoop1:
mov [ebp+RASTSPAN_iW], edx mov esi, edx ; Save W for multiplying by UoW and VoW sub edx, LastW mov [ebx+RASTCTX_SI+SPANITER_iDW], edx
inc word ptr [ebx+RASTCTX_SI+SPANITER_iSpecialW]
pslld mm5, 8 shl esi, 4 movd eax, mm5 psrlq mm5, 32 imul esi mov [ebx+RASTCTX_SI+SPANITER_iU1], edx movd eax, mm5 imul esi mov [ebx+RASTCTX_SI+SPANITER_iV1], edx
mov eax, dword ptr [ebp+RASTSPAN_pZ] mov edx, dword ptr [ebp+RASTSPAN_pSurface]
add eax, iZStep add edx, iSurfaceStep
mov dword ptr [ebp+RASTSPAN_pZ], eax mov dword ptr [ebp+RASTSPAN_pSurface], edx
jmp PixelLoop
ExitPixelLoop:; Loop code ends
;-----------------------------------------------------------------------------; LoopAny code ends here;-----------------------------------------------------------------------------
;pS++; add ebp, SIZEOF_RASTSPAN
;} jmp SpanLoopExitSpanLoop: ;pP = pP->pNext; mov ecx, [ecx+RASTPRIM_pNext] ;} jmp PrimLoop
ExitPrimLoop: ;_asm{ emms ;}
;return S_OK; xor eax, eax;} pop edi pop esi pop ebx mov esp, StackPos pop ebp ret
END
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