|
|
;-----------------------------------------------------------------------------;; Monolith 5. Non-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;; Register useage;; mm6 - Contains gouraud color at all times.;; Changes from general MMX code.; 1) Convert directly from 565 to internal format to remove; extra unpack. Remove alpha set.; 2) Keep uB uG uR uA in MM6.; 3) Didnt need to save texture color or blended color so these; are kept in registers.; 4) All calls and jumps were removed.; 5) Removed alpha masking in in modulate code.;;-----------------------------------------------------------------------------
INCLUDE iammx.incINCLUDE offs_acp.inc
;TBD check to see if this value is correct.COLOR_SHIFT equ 8
.586.model flat
; Big seperating lines seperate code into span code; and loop code. If span and loop are not going to; end up being combined then it will be easy to; seperate the code.
.data
; Need externs for all of the variables that are needed for various beads
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
; TBD. I think that I want to do 0xffff instead of 0xff. This will; have to be checked. There is a value very similiar to this in; buf write.EXTERN SetAlphato0xffff:MMWORDEXTERN SetAlphato0xff:MMWORD
; TODO This equate are identical to the ones in texread.mas. Maybe they should be in a common .inc file.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_5_MMXMLRast_5: 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 movzx eax, word ptr [ebp+RASTSPAN_uPix] mov uPix, eax
movq mm5, [ebp+RASTSPAN_iUoW1]
psrad mm5, TEX_TO_FINAL_SHIFT movq [ebx+RASTCTX_SI+SPANITER_iU1], mm5
;pCtx->SI.iU2 = pS->iUoW2>>TEX_TO_FINAL_SHIFT; ;pCtx->SI.iV2 = pS->iVoW2>>TEX_TO_FINAL_SHIFT;
;movq mm5, [ebp+RASTSPAN_iUoW2]
;pCtx->SI.iDW = 0x0; mov dword ptr [ebx+RASTCTX_SI+SPANITER_iDW], 0
;pCtx->SI.iSpecialW = 0; mov word ptr [ebx+RASTCTX_SI+SPANITER_iSpecialW], 0; -----
;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:
movq mm6, [ebp+RASTSPAN_uB]; 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 movq mm4, mm1
pmaddwd mm4, mm5 ; Throw in first address calculation. mov edi, [esi+SPANTEX_pBits] movd eax, mm4
; Read in texture color movzx eax, word ptr [edi+2*eax]
; Convert from 565 to internal format movd mm1, eax ; Make two more copies of input color movq mm2, mm1 pand mm1, dword ptr MaskGreen565to888 ; MaskGreen565to888 is in memory pand mm2, dword ptr opt_MaskRed565to888 ; MaskRed565to888 in memory. psllq mm2, 24 ;RedShift565to888 ; RedShift should be an immediate psllq mm1, 13 ;GreenShift565to888 shl eax, 3 ;BlueShift565to888 por mm1, mm2 and eax, 0FFH ;dword ptr MaskBlue565to888 movd mm2, eax por mm2, mm1
;modulate
movq mm1, mm6 psrlw mm1, COLOR_SHIFT ; COLOR_SHIFT is set to 8. pmullw mm1, mm2
; convert back to 565
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
; write pixel to screen. mov [edi], dx
FailLabel:
dec uPix ;// BUG BUG?? uPix should never start as zero should it?
jle ExitPixelLoop
; Keeping uB in MM6 so that dont need to store back and forth from memory. paddw mm6, [ecx+RASTPRIM_iDBDX]
movq mm5, [ebp+RASTSPAN_iUoW1] paddd mm5, [ecx+RASTPRIM_iDUoW1DX] movq [ebp+RASTSPAN_iUoW1], mm5
psrad mm5, TEX_TO_FINAL_SHIFT movq [ebx+RASTCTX_SI+SPANITER_iU1], mm5
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;-----------------------------------------------------------------------------
add ebp, SIZEOF_RASTSPAN
jmp SpanLoopExitSpanLoop:
mov ecx, [ecx+RASTPRIM_pNext]
jmp PrimLoop
ExitPrimLoop:
emms xor eax, eax
pop edi pop esi pop ebx mov esp, StackPos pop ebp ret
END
|
