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361 lines
9.2 KiB
361 lines
9.2 KiB
;-----------------------------------------------------------------------------
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;
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; Monolith 12. Non-Perspective Correct Nearest Gouraud Modulated
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; NO Z buffer 565 output color.
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;
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; Exactly the same as monolith 5 except Z buffer code removed.
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;
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;-----------------------------------------------------------------------------
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INCLUDE iammx.inc
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INCLUDE offs_acp.inc
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;TBD check to see if this value is correct.
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COLOR_SHIFT equ 8
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.586
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.model flat
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; Big seperating lines seperate code into span code
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; and loop code. If span and loop are not going to
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; end up being combined then it will be easy to
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; seperate the code.
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.data
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; Need externs for all of the variables that are needed for various beads
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EXTERN IncHighandLow16:MMWORD
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EXTERN UFracVFracMask:MMWORD
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EXTERN UV32to15Mask:MMWORD
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EXTERN Makelow16one:MMWORD
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EXTERN MaskKeepUValues:MMWORD
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EXTERN MaskKeepVValues:MMWORD
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EXTERN UFrac:MMWORD
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EXTERN VFrac:MMWORD
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EXTERN Zero:MMWORD
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EXTERN memD3DTFG_POINT:MMWORD
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EXTERN GiveUp:MMWORD
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EXTERN LastW:MMWORD
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EXTERN Val0x000a000a:MMWORD
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EXTERN Val0xffff:MMWORD
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EXTERN Val0x0000002000000020:MMWORD
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EXTERN Val0x0000ffff0000ffff:MMWORD
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opt_MaskRed565to888 MMWORD 000000000000F800H
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EXTERN MaskRed565to888:MMWORD
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EXTERN MaskGreen565to888:MMWORD
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EXTERN MaskBlue565to888:MMWORD
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EXTERN MaskRed555to888:MMWORD
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EXTERN MaskGreen555to888:MMWORD
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EXTERN MaskBlue555to888:MMWORD
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EXTERN MaskAlpha1555to8888:MMWORD
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EXTERN MaskRed1555to8888:MMWORD
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EXTERN MaskGreen1555to8888:MMWORD
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EXTERN MaskBlue1555to8888:MMWORD
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; TBD. I think that I want to do 0xffff instead of 0xff. This will
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; have to be checked. There is a value very similiar to this in
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; buf write.
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EXTERN SetAlphato0xffff:MMWORD
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EXTERN SetAlphato0xff:MMWORD
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; TODO This equate are identical to the ones in texread.mas. Maybe they should be in a common .inc file.
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RedShift565to888 equ 8
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GreenShift565to888 equ 5
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BlueShift565to888 equ 3
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RedShift555to888 equ 9
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GreenShift555to888 equ 6
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BlueShift555to888 equ 3
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AlphaShift1555to8888 equ 16
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RedShift1555to8888 equ 9
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GreenShift1555to8888 equ 6
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BlueShift1555to8888 equ 3
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EXTERN Zero:MMWORD
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EXTERN DW_One_One:MMWORD
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EXTERN MaskOffAlpha:MMWORD
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EXTERN ShiftTA:MMWORD
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EXTERN Val0x00ff00ff00ff00ff:MMWORD
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EXTERN Val0x000000ff00ff00ff:MMWORD
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EXTERN Val0X0000000001000000:MMWORD
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EXTERN AlphaVal128:MMWORD
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EXTERN RGBVal128:MMWORD
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EXTERN g_uDitherValue:MMWORD
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EXTERN SetAlphato0xff:MMWORD
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EXTERN u888to565RedBlueMask:MMWORD
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EXTERN u888to565GreenMask:MMWORD
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EXTERN u888to565Multiplier:MMWORD
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EXTERN uVal0x000007ff03ff07ff:MMWORD
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EXTERN uVal0x0000078003c00780:MMWORD
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EXTERN u888to555RedBlueMask:MMWORD
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EXTERN u888to555GreenMask:MMWORD
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EXTERN u888to555Multiplier:MMWORD
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EXTERN uVal0x000007ff07ff07ff:MMWORD
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EXTERN uVal0x0000078007800780:MMWORD
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;-----------------------------------------------------------------------------
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; Span Variables
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StackPos dd ?
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uSpans dd ?
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;-----------------------------------------------------------------------------
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;-----------------------------------------------------------------------------
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; Loop Variables
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iSurfaceStep dd ?
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uPix dd ?
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;-----------------------------------------------------------------------------
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.code
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PUBLIC _MMXMLRast_12
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_MMXMLRast_12:
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push ebp
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mov StackPos, esp
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mov eax, esp
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sub esp, 0Ch ; This will need to change if stack frame size changes.
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push ebx
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push esi
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push edi
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; Put pCtx into ebx
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mov ebx, [eax+8]
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;PD3DI_RASTPRIM pP = pCtx->pPrim;
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mov ecx, [ebx+RASTCTX_pPrim]
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;while (pP)
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;{
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PrimLoop:
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cmp ecx, 0
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je ExitPrimLoop
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;UINT16 uSpans = pP->uSpans;
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movzx eax, word ptr [ecx+RASTPRIM_uSpans]
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mov uSpans, eax
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;PD3DI_RASTSPAN pS = (PD3DI_RASTSPAN)(pP + 1);
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mov ebp, ecx
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add ebp, SIZEOF_RASTPRIM
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;while (uSpans-- > 0)
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;{
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SpanLoop:
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mov edx, uSpans
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mov eax, edx
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dec eax
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mov uSpans, eax
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test edx, edx
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jle ExitSpanLoop
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;pCtx->pfnBegin(pCtx, pP, pS);
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;-----------------------------------------------------------------------------
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; LoopAny code inserted here. This is to get rid of an extra
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; jump.
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;-----------------------------------------------------------------------------
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; Setup Code begins
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movzx eax, word ptr [ebp+RASTSPAN_uPix]
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mov uPix, eax
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movq mm5, [ebp+RASTSPAN_iUoW1]
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psrad mm5, TEX_TO_FINAL_SHIFT
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movq [ebx+RASTCTX_SI+SPANITER_iU1], mm5
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;pCtx->SI.iU2 = pS->iUoW2>>TEX_TO_FINAL_SHIFT;
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;pCtx->SI.iV2 = pS->iVoW2>>TEX_TO_FINAL_SHIFT;
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;movq mm5, [ebp+RASTSPAN_iUoW2]
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;pCtx->SI.iDW = 0x0;
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mov dword ptr [ebx+RASTCTX_SI+SPANITER_iDW], 0
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;pCtx->SI.iSpecialW = 0;
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mov word ptr [ebx+RASTCTX_SI+SPANITER_iSpecialW], 0
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; -----
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;if (pP->uFlags & D3DI_RASTPRIM_X_DEC)
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;{
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mov eax, [ecx+RASTPRIM_uFlags]
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and eax, D3DI_RASTPRIM_X_DEC
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test eax, eax
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jz LeftToRightSpan
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;iSurfaceStep = -pCtx->iSurfaceStep;
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mov eax, [ebx+RASTCTX_iSurfaceStep]
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neg eax
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mov iSurfaceStep, eax
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;}
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jmp DoneSpanDirif
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;else
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;{
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LeftToRightSpan:
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;iSurfaceStep = pCtx->iSurfaceStep;
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mov eax, [ebx+RASTCTX_iSurfaceStep]
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mov iSurfaceStep, eax
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;}
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DoneSpanDirif:
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movq mm6, [ebp+RASTSPAN_uB]
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; Setup Code Ends
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; ----------------------------------------------------------------------------------------------------------------
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; Loop Code Begins
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PixelLoop:
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; texturecode
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mov esi, [ebx+RASTCTX_pTexture]
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movq mm5, MMWORD PTR Val0x000a000a ; This is TEX_FINAL_SHIFT - 6 = 10.
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movd mm4, [esi+SPANTEX_iShiftU]
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psubw mm5, mm4
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movq mm4, mm5
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pand mm5, MMWORD PTR Val0xffff
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psrld mm4, 16
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movd mm1, [ebx+RASTCTX_SI+SPANITER_iU1]
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psrad mm1, mm5
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movd mm2, [ebx+RASTCTX_SI+SPANITER_iV1]
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psrad mm2, mm4
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punpckldq mm1, mm2
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movzx edx, word ptr [esi+SPANTEX_iShiftPitch]
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add edx, 16
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movd mm2, edx
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movq mm5, MMWORD ptr Makelow16one
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pslld mm5, mm2
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por mm5, MMWORD ptr Makelow16one
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psrad mm1, 6
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packssdw mm1, mm1 ; Value needs to be packed since all wrap/mirror
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movd mm0, [esi+SPANTEX_uMaskU] ; Load U and V mask
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movq mm7, mm1
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movd mm4, [esi+SPANTEX_iFlipMaskU]
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pand mm7, mm4
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pcmpeqw mm7, MMWORD PTR Zero
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pandn mm7, mm0
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pand mm1, mm0
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pxor mm1, mm7
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movq mm4, mm1
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pmaddwd mm4, mm5 ; Throw in first address calculation.
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mov edi, [esi+SPANTEX_pBits]
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movd eax, mm4
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movzx eax, word ptr [edi+2*eax]
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movd mm1, eax ; Make two more copies of input color
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movq mm2, mm1
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pand mm1, dword ptr MaskGreen565to888 ; MaskGreen565to888 is in memory
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pand mm2, dword ptr opt_MaskRed565to888 ; MaskRed565to888 in memory.
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psllq mm2, 24 ;RedShift565to888 ; RedShift should be an immediate
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psllq mm1, 13 ;GreenShift565to888
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shl eax, 3 ;BlueShift565to888
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por mm1, mm2
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and eax, 0FFH ;dword ptr MaskBlue565to888
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movd mm2, eax
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por mm2, mm1
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;modulate
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movq mm1, mm6
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psrlw mm1, COLOR_SHIFT ; COLOR_SHIFT is set to 8.
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pmullw mm1, mm2
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;write
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mov edi, [ebp+RASTSPAN_pSurface]
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psrlw mm1, 8 ; Convert color1 from 8.8 two 0.8
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packuswb mm1, mm7 ; pack one color
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movq mm3, mm1
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pand mm1, MMWORD PTR u888to565RedBlueMask
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pmaddwd mm1, MMWORD PTR u888to565Multiplier
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pand mm3, MMWORD PTR u888to565GreenMask
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por mm1, mm3
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psrld mm1, 5
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movd edx, mm1
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mov [edi], dx
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dec uPix
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jle ExitPixelLoop
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; Keeping uB in MM6 so that dont need to store back and forth from memory.
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paddw mm6, [ecx+RASTPRIM_iDBDX]
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movq mm5, [ebp+RASTSPAN_iUoW1]
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paddd mm5, [ecx+RASTPRIM_iDUoW1DX]
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movq [ebp+RASTSPAN_iUoW1], mm5
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psrad mm5, TEX_TO_FINAL_SHIFT
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movq [ebx+RASTCTX_SI+SPANITER_iU1], mm5
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mov edx, dword ptr [ebp+RASTSPAN_pSurface]
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add edx, iSurfaceStep
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mov dword ptr [ebp+RASTSPAN_pSurface], edx
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jmp PixelLoop
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ExitPixelLoop:
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; Loop code ends
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;-----------------------------------------------------------------------------
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; LoopAny code ends here
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;-----------------------------------------------------------------------------
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add ebp, SIZEOF_RASTSPAN
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jmp SpanLoop
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ExitSpanLoop:
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mov ecx, [ecx+RASTPRIM_pNext]
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jmp PrimLoop
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ExitPrimLoop:
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emms
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xor eax, eax
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pop edi
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pop esi
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pop ebx
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mov esp, StackPos
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pop ebp
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ret
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END
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