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Assembly Source File | 1996-04-28 | 102.1 KB | 4,454 lines

; lg3drasw.asm ; ; Copyright (c) 1996 by Toshiaki Tsuji, all rights reserved. ; Functions PUBLIC _SetViewPortData_ PUBLIC _DrawSolidNoHorz_, _DrawSolidGrdHorz_ PUBLIC _DrawTextureNoHorz_, _DrawTextureFlatHorz_, _DrawTextureGrdHorz_ PUBLIC _DrawSolidNoTransHorz_, _DrawSolidGrdTransHorz_ PUBLIC _DrawTextureNoTransHorz_, _DrawTextureFlatTransHorz_ PUBLIC _DrawTextureGrdTransHorz_ PUBLIC _DrawSolidNoHazeHorz_, _DrawSolidGrdHazeHorz_ PUBLIC _DrawTextureNoHazeHorz_, _DrawTextureFlatHazeHorz_, _DrawTextureGrdHazeHorz_ ; Data PUBLIC __LeftX, __LeftY, __LeftU, __LeftV, __LeftI, __LeftH, __LeftZ PUBLIC __RightX, __RightY, __RightU, __RightV, __RightI, __RightH, __RightZ PUBLIC __LeftDx, __LeftDy, __LeftDu, __LeftDv, __LeftDI, __LeftDh, __LeftDz PUBLIC __RightDx, __RightDy, __RightDu, __RightDv, __RightDI, __RightDh, __RightDz PUBLIC __DestBuffer, __AddDest, __ShadeBuffer, __TextureBuffer, __BlendBuffer PUBLIC __HazeBuffer PUBLIC __DivTable .DATA __LeftX DD 0 __LeftY DD 0 __LeftU DD 0 __LeftV DD 0 __LeftI DD 0 __LeftZ DD 0 __LeftH DD 0 __RightX DD 0 __RightY DD 0 __RightU DD 0 __RightV DD 0 __RightI DD 0 __RightZ DD 0 __RightH DD 0 __LeftDx DD 0 __LeftDy DD 0 __LeftDu DD 0 __LeftDv DD 0 __LeftDI DD 0 __LeftDz DD 0 __LeftDh DD 0 __RightDx DD 0 __RightDy DD 0 __RightDu DD 0 __RightDv DD 0 __RightDI DD 0 __RightDz DD 0 __RightDh DD 0 __DestBuffer DD 0 __TextureBuffer DD 0 __AddDest DD 0 __ShadeBuffer DD 0 __BlendBuffer DD 0 __HazeBuffer DD 0 __DivTable DD 0 Color DD 0 LoopCount DD 0 VMinX DD 0 VMaxX DD 0 VMinY DD 0 VMaxY DD 0 TempLen DD 0 ; Before Clipped TempVal DD 0 ; Inner Loop Delta InDeltaDI DD 0 InDeltaDu DD 0 InDeltaDv DD 0 InDeltaDh DD 0 DummyFloat DD 0 InLoopCount DW 0 DvD0 DD 0 D0Du DW 0 DID0 DD 0 .CODE .486 ; _SetViewPortData ( LONG MinX, LONG MinY, LONG MaxX, LONG MaxY ) ; ; EAX = MinX, EDX = MinY, EBX = MaxX, ECX = MaxY _SetViewPortData_ PROC C mov VMinX, EAX mov VMinY, EDX mov VMaxX, EBX mov VMaxY, ECX ret _SetViewPortData_ ENDP ; _DrawSolidNoHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawSolidNoHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedSolidNoHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedSolidNoHorz : cmp ECX, 0 jne DrawSolidNoHorzClip DrawSolidNoHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidNoHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutSolidNoHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U sub ECX, EAX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowSolidNoHorzNoClip mov EAX, Color ; U mov EDX, ECX ; V shr ECX, 2 ; U and EDX, 3 ; V rep stosd mov ECX, EDX rep stosb NextRowSolidNoHorzNoClip : dec ESI jnz LoopOutSolidNoHorz jmp EndLoopOutSolidNoHorz DrawSolidNoHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidNoHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedSolidNoHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowSolidNoHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowSolidNoHorz ; Check for Left cmp EAX, VMinX jge CheckRightSolidNoHorz mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightSolidNoHorz : cmp ECX, VMaxX jle StartSolidNoHorz mov ECX, VMaxX ; Set Right to MaxX StartSolidNoHorz : sub ECX, EAX inc ECX cmp ECX, 0 jle NextRowSolidNoHorz add EDI, EAX mov EAX, Color mov EDX, ECX shr ECX, 2 and EDX, 3 rep stosd mov ECX, EDX rep stosb NextRowSolidNoHorz : dec ESI jnz LoopOutClippedSolidNoHorz EndLoopOutSolidNoHorz : pop ESI pop EDI pop EBP ret _DrawSolidNoHorz_ ENDP ; _DrawSolidGrdHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawSolidGrdHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedSolidGrdHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDI imul EBX add __LeftI, EAX mov EAX, __RightDI imul EBX add __RightI, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedSolidGrdHorz : cmp ECX, 0 jne DrawSolidGrdHorzClip DrawSolidGrdHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidGrdHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutSolidGrdHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V mov EBX, __LeftI ; U mov EAX, EBX ; U EAX is the Left I add EBX, __LeftDI ; V mov __LeftI, EBX ; V mov EBX, __RightI ; U mov EDX, EBX ; U EDX is the Right I add EBX, __RightDI ; V mov __RightI, EBX ; V cmp ECX, 0 jle NextRowSolidGrdHorzNoClip mov EBX, EAX ; EBX is the Left I sub EDX, EAX mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EBP, EBX mov EAX, Color mov EDX, InDeltaDI push ESI mov ESI, __ShadeBuffer InLoopSolidGrdHorz : mov EBX, EBP shr EBX, 8 mov BL, AL add EBP, EDX mov AH, [EBX+ESI] mov [EDI], AH inc EDI loop InLoopSolidGrdHorz pop ESI NextRowSolidGrdHorzNoClip : dec ESI jnz LoopOutSolidGrdHorz jmp EndLoopOutSolidGrdHorz DrawSolidGrdHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidGrdHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedSolidGrdHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowSolidGrdHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowSolidGrdHorz ; Check for Left cmp EAX, VMinX jge CheckRightSolidGrdHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightSolidGrdHorz : cmp ECX, VMaxX jle StartSolidGrdHorz mov ECX, VMaxX ; Set Right to MaxX StartSolidGrdHorz : ; Clipped sub ECX, EAX inc ECX add EDI, EAX mov EBP, TempLen ; EBP is the loop count before clipped mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EBX, __LeftI ; U mov EAX, EBX ; U EAX is the Left I add EBX, __LeftDI ; V mov __LeftI, EBX ; V mov EBX, __RightI ; U mov EDX, EBX ; U EDX is the Right I add EBX, __RightDI ; V mov __RightI, EBX ; V cmp ECX, 0 jle NextRowSolidGrdHorz mov EBX, EAX ; EAX is Left I sub EDX, EAX mov EAX, EDX sar EDX, 01Fh idiv EBP mov InDeltaDI, EAX ; Add Delta for Skipped pixel mov EBP, EBX mov EAX, InDeltaDI imul TempLen add EBP, EAX mov EAX, Color mov EDX, InDeltaDI push ESI mov ESI, __ShadeBuffer InLoopClippedSolidGrdHorz : mov EBX, EBP shr EBX, 8 mov BL, AL mov AH, [EBX+ESI] add EBP, EDX mov [EDI], AH inc EDI loop InLoopClippedSolidGrdHorz pop ESI NextRowSolidGrdHorz : dec ESI jnz LoopOutClippedSolidGrdHorz EndLoopOutSolidGrdHorz : pop ESI pop EDI pop EBP ret _DrawSolidGrdHorz_ ENDP ; _DrawTextureNoHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureNoHorz_ PROC C push EBP push EDI push ESI sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureNoHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureNoHorz : cmp ECX, 0 jne DrawTextureNoHorzClip DrawTextureNoHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureNoHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureNoHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U sub ECX, EAX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureNoHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU sar ECX, 8 mov EDX, __LeftV sar EDX, 8 mov ESI, __TextureBuffer mov EBX, 0 InLoopTextureNoHorz : mov BH, DH mov BL, CH add ECX, InDeltaDu mov AL, [EBX+ESI] add EDX, InDeltaDv mov [EDI], AL inc EDI dec EBP jnz InLoopTextureNoHorz pop ESI NextRowTextureNoHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutTextureNoHorz jmp EndLoopOutTextureNoHorz DrawTextureNoHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureNoHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureNoHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureNoHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureNoHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureNoHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureNoHorz : cmp ECX, VMaxX jle StartTextureNoHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureNoHorz : sub ECX, EAX inc ECX cmp ECX, 0 jle NextRowTextureNoHorz add EDI, EAX mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov TempLen, EBX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX mov ESI, __TextureBuffer mov EBX, 0 InLoopClippedTextureNoHorz : mov BH, DH mov BL, CH add ECX, InDeltaDu mov AL, [EBX+ESI] add EDX, InDeltaDv mov [EDI], AL inc EDI dec EBP jnz InLoopClippedTextureNoHorz pop ESI NextRowTextureNoHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutClippedTextureNoHorz EndLoopOutTextureNoHorz : pop ESI pop EDI pop EBP ret _DrawTextureNoHorz_ ENDP ; _DrawTextureFlatHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureFlatHorz_ PROC C push EBP push EDI push ESI sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureFlatHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureFlatHorz : cmp ECX, 0 jne DrawTextureFlatHorzClip DrawTextureFlatHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureFlatHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureFlatHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureFlatHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU mov EDX, __LeftV sar ECX, 8 sar EDX, 8 mov EAX, __LeftI sar EAX, 8 mov ESI, __ShadeBuffer InLoopTextureFlatHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov AL, [EBX] add EDX, InDeltaDv mov BL, [ESI+EAX] mov [EDI], BL inc EDI dec EBP jnz InLoopTextureFlatHorz pop ESI NextRowTextureFlatHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutTextureFlatHorz jmp EndLoopOutTextureFlatHorz DrawTextureFlatHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureFlatHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureFlatHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureFlatHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureFlatHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureFlatHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureFlatHorz : cmp ECX, VMaxX jle StartTextureFlatHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureFlatHorz : sub ECX, EAX inc ECX add EDI, EAX cmp ECX, 0 jle NextRowTextureFlatHorz mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov ECX, TempLen mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX mov EAX, __LeftI sar EAX, 8 mov ESI, __ShadeBuffer InLoopClippedTextureFlatHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov AL, [EBX] add EDX, InDeltaDv mov BL, [ESI+EAX] mov [EDI], BL inc EDI dec EBP jnz InLoopClippedTextureFlatHorz pop ESI NextRowTextureFlatHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutClippedTextureFlatHorz EndLoopOutTextureFlatHorz : pop ESI pop EDI pop EBP ret _DrawTextureFlatHorz_ ENDP ; _DrawTextureGrdHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureGrdHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureGrdHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __LeftDI imul EBX add __LeftI, EAX mov EAX, __RightDI imul EBX add __RightI, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureGrdHorz : cmp ECX, 0 jne DrawTextureGrdHorzClip DrawTextureGrdHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureGrdHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureGrdHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureGrdHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftI ; U mov EDX, __RightI ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU mov EDX, __LeftV mov ESI, __LeftI sar ECX, 8 sar EDX, 8 sar ESI, 8 InLoopTextureGrdHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov EAX, ESI mov AL, [EBX] add EDX, InDeltaDv add EAX, __ShadeBuffer mov BL, [EAX] add ESI, InDeltaDI mov [EDI], BL inc EDI dec EBP jnz InLoopTextureGrdHorz pop ESI NextRowTextureGrdHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX dec ESI jnz LoopOutTextureGrdHorz jmp EndLoopOutTextureGrdHorz DrawTextureGrdHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureGrdHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureGrdHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureGrdHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureGrdHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureGrdHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureGrdHorz : cmp ECX, VMaxX jle StartTextureGrdHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureGrdHorz : sub ECX, EAX inc ECX add EDI, EAX cmp ECX, 0 jle NextRowTextureGrdHorz mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov ECX, TempLen mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EAX, __LeftI ; U mov EDX, __RightI ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDI imul TempLen mov ESI, __LeftI sar ESI, 8 add ESI, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX InLoopClippedTextureGrdHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov EAX, ESI mov AL, [EBX] add EDX, InDeltaDv add EAX, __ShadeBuffer mov BL, [EAX] add ESI, InDeltaDI mov [EDI], BL inc EDI dec EBP jnz InLoopClippedTextureGrdHorz pop ESI NextRowTextureGrdHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX dec ESI jnz LoopOutClippedTextureGrdHorz EndLoopOutTextureGrdHorz : pop ESI pop EDI pop EBP ret _DrawTextureGrdHorz_ ENDP ;*************************************************** ; ; Transparent Routines ; ;*************************************************** ; _DrawSolidNoTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawSolidNoTransHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedSolidNoTransHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedSolidNoTransHorz : cmp ECX, 0 jne DrawSolidNoTransHorzClip DrawSolidNoTransHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidNoTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutSolidNoTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U sub ECX, EAX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowSolidNoTransHorzNoClip mov EAX, Color and EAX, 0000FF00h mov EBP, __BlendBuffer InLoopSolidNoTransHorz : mov AL, [EDI] mov AL, [EBP+EAX] mov [EDI], AL inc EDI loop InLoopSolidNoTransHorz NextRowSolidNoTransHorzNoClip : dec ESI jnz LoopOutSolidNoTransHorz jmp EndLoopOutSolidNoTransHorz DrawSolidNoTransHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidNoTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedSolidNoTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowSolidNoTransHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowSolidNoTransHorz ; Check for Left cmp EAX, VMinX jge CheckRightSolidNoTransHorz mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightSolidNoTransHorz : cmp ECX, VMaxX jle StartSolidNoTransHorz mov ECX, VMaxX ; Set Right to MaxX StartSolidNoTransHorz : sub ECX, EAX inc ECX cmp ECX, 0 jle NextRowSolidNoTransHorz add EDI, EAX mov EAX, Color and EAX, 0000FF00h mov EBP, __BlendBuffer InLoopClippedSolidNoTransHorz : mov AL, [EDI] mov AL, [EBP+EAX] mov [EDI], AL inc EDI loop InLoopClippedSolidNoTransHorz NextRowSolidNoTransHorz : dec ESI jnz LoopOutClippedSolidNoTransHorz EndLoopOutSolidNoTransHorz : pop ESI pop EDI pop EBP ret _DrawSolidNoTransHorz_ ENDP ; _DrawSolidGrdTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawSolidGrdTransHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedSolidGrdTransHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDI imul EBX add __LeftI, EAX mov EAX, __RightDI imul EBX add __RightI, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedSolidGrdTransHorz : cmp ECX, 0 jne DrawSolidGrdTransHorzClip DrawSolidGrdTransHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidGrdTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutSolidGrdTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V mov EBX, __LeftI ; U mov EAX, EBX ; U EAX is the Left I add EBX, __LeftDI ; V mov __LeftI, EBX ; V mov EBX, __RightI ; U mov EDX, EBX ; U EDX is the Right I add EBX, __RightDI ; V mov __RightI, EBX ; V cmp ECX, 0 jle NextRowSolidGrdTransHorzNoClip mov EBX, EAX ; EBX is the Left I sub EDX, EAX mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EBP, EBX mov EAX, Color mov EDX, __BlendBuffer push ESI mov ESI, __ShadeBuffer InLoopSolidGrdTransHorz : mov EBX, EBP shr EBX, 8 mov BL, AL add EBP, InDeltaDI mov BH, [EBX+ESI] mov BL, [EDI] mov AH, [EDX+EBX] mov [EDI], AH inc EDI loop InLoopSolidGrdTransHorz pop ESI NextRowSolidGrdTransHorzNoClip : dec ESI jnz LoopOutSolidGrdTransHorz jmp EndLoopOutSolidGrdTransHorz DrawSolidGrdTransHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidGrdTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedSolidGrdTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowSolidGrdTransHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowSolidGrdTransHorz ; Check for Left cmp EAX, VMinX jge CheckRightSolidGrdTransHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightSolidGrdTransHorz : cmp ECX, VMaxX jle StartSolidGrdTransHorz mov ECX, VMaxX ; Set Right to MaxX StartSolidGrdTransHorz : ; Clipped sub ECX, EAX inc ECX add EDI, EAX mov EBP, TempLen ; EBP is the loop count before clipped mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EBX, __LeftI ; U mov EAX, EBX ; U EAX is the Left I add EBX, __LeftDI ; V mov __LeftI, EBX ; V mov EBX, __RightI ; U mov EDX, EBX ; U EDX is the Right I add EBX, __RightDI ; V mov __RightI, EBX ; V cmp ECX, 0 jle NextRowSolidGrdTransHorz mov EBX, EAX ; EAX is Left I sub EDX, EAX mov EAX, EDX sar EDX, 01Fh idiv EBP mov InDeltaDI, EAX ; Add Delta for Skipped pixel mov EBP, EBX mov EAX, InDeltaDI imul TempLen add EBP, EAX mov EAX, Color mov EDX, __BlendBuffer push ESI mov ESI, __ShadeBuffer InLoopClippedSolidGrdTransHorz : mov EBX, EBP shr EBX, 8 mov BL, AL add EBP, InDeltaDI mov BH, [EBX+ESI] mov BL, [EDI] mov AH, [EDX+EBX] mov [EDI], AH inc EDI loop InLoopClippedSolidGrdTransHorz pop ESI NextRowSolidGrdTransHorz : dec ESI jnz LoopOutClippedSolidGrdTransHorz EndLoopOutSolidGrdTransHorz : pop ESI pop EDI pop EBP ret _DrawSolidGrdTransHorz_ ENDP ; _DrawTextureNoTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureNoTransHorz_ PROC C push EBP push EDI push ESI sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureNoTransHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureNoTransHorz : cmp ECX, 0 jne DrawTextureNoTransHorzClip DrawTextureNoTransHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureNoTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureNoTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U sub ECX, EAX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureNoTransHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU sar ECX, 8 mov EDX, __LeftV sar EDX, 8 mov ESI, __TextureBuffer mov EBX, 0 mov EAX, 0 mov InLoopCount, BP mov EBP, __BlendBuffer InLoopTextureNoTransHorz : mov BH, DH mov BL, CH add ECX, InDeltaDu mov AL, [EDI] mov AH, [EBX+ESI] add EDX, InDeltaDv mov AL, [EBP+EAX] mov [EDI], AL inc EDI dec InLoopCount jnz InLoopTextureNoTransHorz pop ESI NextRowTextureNoTransHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutTextureNoTransHorz jmp EndLoopOutTextureNoTransHorz DrawTextureNoTransHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureNoTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureNoTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureNoTransHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureNoTransHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureNoTransHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureNoTransHorz : cmp ECX, VMaxX jle StartTextureNoTransHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureNoTransHorz : sub ECX, EAX inc ECX cmp ECX, 0 jle NextRowTextureNoTransHorz add EDI, EAX mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov TempLen, EBX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX mov ESI, __TextureBuffer mov EBX, 0 mov EAX, 0 mov InLoopCount, BP mov EBP, __BlendBuffer InLoopClippedTextureNoTransHorz : mov BH, DH mov BL, CH add ECX, InDeltaDu mov AL, [EDI] mov AH, [EBX+ESI] add EDX, InDeltaDv mov AL, [EBP+EAX] mov [EDI], AL inc EDI dec InLoopCount jnz InLoopClippedTextureNoTransHorz pop ESI NextRowTextureNoTransHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutClippedTextureNoTransHorz EndLoopOutTextureNoTransHorz : pop ESI pop EDI pop EBP ret _DrawTextureNoTransHorz_ ENDP ; _DrawTextureFlatTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureFlatTransHorz_ PROC C push EBP push EDI push ESI sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureFlatTransHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureFlatTransHorz : cmp ECX, 0 jne DrawTextureFlatTransHorzClip DrawTextureFlatTransHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureFlatTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureFlatTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureFlatTransHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU mov EDX, __LeftV sar ECX, 8 sar EDX, 8 mov EAX, __LeftI sar EAX, 8 mov ESI, __ShadeBuffer mov InLoopCount, BP mov EBP, __BlendBuffer InLoopTextureFlatTransHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov AL, [EBX] add EDX, InDeltaDv mov BL, [EDI] mov BH, [ESI+EAX] and EBX, 0FFFFh mov AL, [EBP+EBX] mov [EDI], AL inc EDI dec InLoopCount jnz InLoopTextureFlatTransHorz pop ESI NextRowTextureFlatTransHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutTextureFlatTransHorz jmp EndLoopOutTextureFlatTransHorz DrawTextureFlatTransHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureFlatTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureFlatTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureFlatTransHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureFlatTransHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureFlatTransHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureFlatTransHorz : cmp ECX, VMaxX jle StartTextureFlatTransHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureFlatTransHorz : sub ECX, EAX inc ECX add EDI, EAX cmp ECX, 0 jle NextRowTextureFlatTransHorz mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov ECX, TempLen mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX mov EAX, __LeftI sar EAX, 8 mov ESI, __ShadeBuffer mov InLoopCount, BP mov EBP, __BlendBuffer InLoopClippedTextureFlatTransHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov AL, [EBX] add EDX, InDeltaDv mov BL, [EDI] mov BH, [ESI+EAX] and EBX, 0FFFFh mov AL, [EBP+EBX] mov [EDI], AL inc EDI dec InLoopCount jnz InLoopClippedTextureFlatTransHorz pop ESI NextRowTextureFlatTransHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX dec ESI jnz LoopOutClippedTextureFlatTransHorz EndLoopOutTextureFlatTransHorz : pop ESI pop EDI pop EBP ret _DrawTextureFlatTransHorz_ ENDP ; _DrawTextureGrdTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureGrdTransHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureGrdTransHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __LeftDI imul EBX add __LeftI, EAX mov EAX, __RightDI imul EBX add __RightI, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureGrdTransHorz : cmp ECX, 0 jne DrawTextureGrdTransHorzClip DrawTextureGrdTransHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureGrdTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureGrdTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureGrdTransHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftI ; U mov EDX, __RightI ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU mov EDX, __LeftV mov ESI, __LeftI sar ECX, 8 sar EDX, 8 sar ESI, 8 mov InLoopCount, BP mov EBP, __BlendBuffer InLoopTextureGrdTransHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov EAX, ESI mov AL, [EBX] add EDX, InDeltaDv add EAX, __ShadeBuffer mov BL, [EDI] mov BH, [EAX] and EBX, 0FFFFh add ESI, InDeltaDI mov AL, [EBP+EBX] mov [EDI], AL inc EDI dec InLoopCount jnz InLoopTextureGrdTransHorz pop ESI NextRowTextureGrdTransHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX dec ESI jnz LoopOutTextureGrdTransHorz jmp EndLoopOutTextureGrdTransHorz DrawTextureGrdTransHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureGrdTransHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureGrdTransHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureGrdTransHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureGrdTransHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureGrdTransHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureGrdTransHorz : cmp ECX, VMaxX jle StartTextureGrdTransHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureGrdTransHorz : sub ECX, EAX inc ECX add EDI, EAX cmp ECX, 0 jle NextRowTextureGrdTransHorz mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov ECX, TempLen mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EAX, __LeftI ; U mov EDX, __RightI ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDI imul TempLen mov ESI, __LeftI sar ESI, 8 add ESI, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX mov InLoopCount, BP mov EBP, __BlendBuffer InLoopClippedTextureGrdTransHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov EAX, ESI mov AL, [EBX] add EDX, InDeltaDv add EAX, __ShadeBuffer mov BL, [EDI] mov BH, [EAX] and EBX, 0FFFFh add ESI, InDeltaDI mov AL, [EBP+EBX] mov [EDI], AL inc EDI dec InLoopCount jnz InLoopClippedTextureGrdTransHorz pop ESI NextRowTextureGrdTransHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX dec ESI jnz LoopOutClippedTextureGrdTransHorz EndLoopOutTextureGrdTransHorz : pop ESI pop EDI pop EBP ret _DrawTextureGrdTransHorz_ ENDP ;*************************************************** ; ; Hazing Routines ; ;*************************************************** ; _DrawSolidNoHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawSolidNoHazeHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedSolidNoHazeHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDh imul EBX add __LeftH, EAX mov EAX, __RightDh imul EBX add __RightH, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedSolidNoHazeHorz : cmp ECX, 0 jne DrawSolidNoHazeHorzClip DrawSolidNoHazeHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidNoHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutSolidNoHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V mov EBX, __LeftH ; U mov EAX, EBX ; U EAX is the Left Haze add EBX, __LeftDh ; V mov __LeftH, EBX ; V mov EBX, __RightH ; U mov EDX, EBX ; U EDX is the Right Haze add EBX, __RightDh ; V mov __RightH, EBX ; V cmp ECX, 0 jle NextRowSolidNoHazeHorzNoClip mov EBX, EAX ; EBX is the Left Haze sub EDX, EAX mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDh, EAX mov EBP, __LeftH mov EAX, Color mov EDX, InDeltaDh push ESI mov ESI, __HazeBuffer InLoopSolidNoHazeHorz : mov EBX, EBP shr EBX, 8 mov BL, AL add EBP, EDX mov AH, [EBX+ESI] mov [EDI], AH inc EDI loop InLoopSolidNoHazeHorz pop ESI NextRowSolidNoHazeHorzNoClip : dec ESI jnz LoopOutSolidNoHazeHorz jmp EndLoopOutSolidNoHazeHorz DrawSolidNoHazeHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidNoHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedSolidNoHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowSolidNoHazeHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowSolidNoHazeHorz ; Check for Left cmp EAX, VMinX jge CheckRightSolidNoHazeHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightSolidNoHazeHorz : cmp ECX, VMaxX jle StartSolidNoHazeHorz mov ECX, VMaxX ; Set Right to MaxX StartSolidNoHazeHorz : ; Clipped sub ECX, EAX inc ECX add EDI, EAX mov EBP, TempLen ; EBP is the loop count before clipped mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EBX, __LeftH ; U mov EAX, EBX ; U EAX is the Left Haze add EBX, __LeftDh ; V mov __LeftH, EBX ; V mov EBX, __RightH ; U mov EDX, EBX ; U EDX is the Right Haze add EBX, __RightDh ; V mov __RightH, EBX ; V cmp ECX, 0 jle NextRowSolidNoHazeHorz mov EBX, EAX ; EAX is Left Haze sub EDX, EAX mov EAX, EDX sar EDX, 01Fh idiv EBP mov InDeltaDh, EAX ; Add Delta for Skipped pixel mov EBP, __LeftH mov EAX, InDeltaDh imul TempLen add EBP, EAX mov EAX, Color mov EDX, InDeltaDh push ESI mov ESI, __HazeBuffer InLoopClippedSolidNoHazeHorz : mov EBX, EBP shr EBX, 8 mov BL, AL mov AH, [EBX+ESI] add EBP, EDX mov [EDI], AH inc EDI loop InLoopClippedSolidNoHazeHorz pop ESI NextRowSolidNoHazeHorz : dec ESI jnz LoopOutClippedSolidNoHazeHorz EndLoopOutSolidNoHazeHorz : pop ESI pop EDI pop EBP ret _DrawSolidNoHazeHorz_ ENDP ; _DrawSolidGrdHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawSolidGrdHazeHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedSolidGrdHazeHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDI imul EBX add __LeftI, EAX mov EAX, __RightDI imul EBX add __RightI, EAX mov EAX, __LeftDh imul EBX add __LeftH, EAX mov EAX, __RightDh imul EBX add __RightH, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedSolidGrdHazeHorz : cmp ECX, 0 jne DrawSolidGrdHazeHorzClip DrawSolidGrdHazeHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidGrdHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutSolidGrdHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowSolidGrdHazeHorzNoClip mov EAX, __LeftI ; U EAX is the Left I mov EDX, __RightI ; U EDX is the Right I sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EAX, __LeftH ; U EAX is the Left Haze mov EDX, __RightH ; U EDX is the Right Haze sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDh, EAX mov EBP, __LeftI sar EBP, 8 mov EAX, Color mov EDX, __HazeBuffer push ESI mov ESI, __ShadeBuffer mov InLoopCount, CX mov ECX, __LeftH sar ECX, 8 InLoopSolidGrdHazeHorz : mov EBX, EBP mov BL, AL add EBP, InDeltaDI mov AH, [EBX+ESI] mov EBX, ECX mov BL, AH add ECX, InDeltaDh mov AH, [EBX+EDX] mov [EDI], AH inc EDI dec InLoopCount jnz InLoopSolidGrdHazeHorz pop ESI NextRowSolidGrdHazeHorzNoClip : mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutSolidGrdHazeHorz jmp EndLoopOutSolidGrdHazeHorz DrawSolidGrdHazeHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutSolidGrdHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedSolidGrdHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowSolidGrdHazeHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowSolidGrdHazeHorz ; Check for Left cmp EAX, VMinX jge CheckRightSolidGrdHazeHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightSolidGrdHazeHorz : cmp ECX, VMaxX jle StartSolidGrdHazeHorz mov ECX, VMaxX ; Set Right to MaxX StartSolidGrdHazeHorz : ; Clipped sub ECX, EAX inc ECX cmp ECX, 0 jle NextRowSolidGrdHazeHorz add EDI, EAX mov EBP, TempLen ; EBP is the loop count before clipped mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EAX, __LeftI ; U EAX is the Left I mov EDX, __RightI ; U EDX is the Right I sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv EBP mov InDeltaDI, EAX mov EAX, __LeftH ; U EAX is the Left Haze mov EDX, __RightH ; U EDX is the Right Haze sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv EBP mov InDeltaDh, EAX mov InLoopCount, CX ; Add Delta for Skipped pixel mov EBP, __LeftI sar EBP, 8 mov EAX, InDeltaDI imul TempLen add EBP, EAX mov ECX, __LeftH sar ECX, 8 mov EAX, InDeltaDh imul TempLen add ECX, EAX mov EAX, Color mov EDX, __HazeBuffer push ESI mov ESI, __ShadeBuffer InLoopClippedSolidGrdHazeHorz : mov EBX, EBP mov BL, AL add EBP, InDeltaDI mov AH, [EBX+ESI] mov EBX, ECX mov BL, AH add ECX, InDeltaDh mov AH, [EBX+EDX] mov [EDI], AH inc EDI dec InLoopCount jnz InLoopClippedSolidGrdHazeHorz pop ESI NextRowSolidGrdHazeHorz : mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutClippedSolidGrdHazeHorz EndLoopOutSolidGrdHazeHorz : pop ESI pop EDI pop EBP ret _DrawSolidGrdHazeHorz_ ENDP ; _DrawTextureNoHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureNoHazeHorz_ PROC C push EBP push EDI push ESI sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureNoHazeHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __LeftDh imul EBX add __LeftH, EAX mov EAX, __RightDh imul EBX add __RightH, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureNoHazeHorz : cmp ECX, 0 jne DrawTextureNoHazeHorzClip DrawTextureNoHazeHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureNoHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureNoHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U sub ECX, EAX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureNoHazeHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftH ; U EAX is the Left Haze mov EDX, __RightH ; U EDX is the Right Haze sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDh, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov EAX, __LeftH sar EAX, 8 mov ECX, __LeftU sar ECX, 8 mov EDX, __LeftV sar EDX, 8 mov ESI, __TextureBuffer mov InLoopCount, BP mov EBP, __HazeBuffer mov EBX, 0 InLoopTextureNoHazeHorz : mov BH, DH mov BL, CH add ECX, InDeltaDu mov BL, [EBX+ESI] mov BH, AH add EAX, InDeltaDh mov BL, [EBX+EBP] add EDX, InDeltaDv mov [EDI], BL inc EDI dec InLoopCount jnz InLoopTextureNoHazeHorz pop ESI NextRowTextureNoHazeHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutTextureNoHazeHorz jmp EndLoopOutTextureNoHazeHorz DrawTextureNoHazeHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureNoHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureNoHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureNoHazeHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureNoHazeHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureNoHazeHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureNoHazeHorz : cmp ECX, VMaxX jle StartTextureNoHazeHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureNoHazeHorz : sub ECX, EAX inc ECX cmp ECX, 0 jle NextRowTextureNoHazeHorz add EDI, EAX mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, TempLen mov TempLen, EBX mov EAX, __LeftH ; U EAX is the Left Haze mov EDX, __RightH ; U EDX is the Right Haze sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv EBP mov InDeltaDh, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov InLoopCount, CX mov EAX, InDeltaDh imul TempLen mov EBX, __LeftH sar EBX, 8 add EBX, EAX mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX mov EAX, EBX mov EBP, __HazeBuffer mov ESI, __TextureBuffer mov EBX, 0 InLoopClippedTextureNoHazeHorz : mov BH, DH mov BL, CH add ECX, InDeltaDu mov BL, [EBX+ESI] mov BH, AH add EAX, InDeltaDh mov BL, [EBX+EBP] add EDX, InDeltaDv mov [EDI], BL inc EDI dec InLoopCount jnz InLoopClippedTextureNoHazeHorz pop ESI NextRowTextureNoHazeHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutClippedTextureNoHazeHorz EndLoopOutTextureNoHazeHorz : pop ESI pop EDI pop EBP ret _DrawTextureNoHazeHorz_ ENDP ; _DrawTextureFlatHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureFlatHazeHorz_ PROC C push EBP push EDI push ESI sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureFlatHazeHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __LeftDh imul EBX add __LeftH, EAX mov EAX, __RightDh imul EBX add __RightH, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureFlatHazeHorz : cmp ECX, 0 jne DrawTextureFlatHazeHorzClip DrawTextureFlatHazeHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureFlatHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureFlatHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureFlatHazeHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftH ; U EAX is the Left Haze mov EDX, __RightH ; U EDX is the Right Haze sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDh, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU mov EDX, __LeftV sar ECX, 8 sar EDX, 8 mov EAX, __LeftI sar EAX, 8 mov ESI, __ShadeBuffer mov InLoopCount, BP mov EBP, __LeftH sar EBP, 8 InLoopTextureFlatHazeHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov AL, [EBX] add EDX, InDeltaDv mov EBX, EBP mov BL, [ESI+EAX] add EBX, __HazeBuffer add EBP, InDeltaDh mov BL, [EBX] mov [EDI], BL inc EDI dec InLoopCount jnz InLoopTextureFlatHazeHorz pop ESI NextRowTextureFlatHazeHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutTextureFlatHazeHorz jmp EndLoopOutTextureFlatHazeHorz DrawTextureFlatHazeHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureFlatHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureFlatHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureFlatHazeHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureFlatHazeHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureFlatHazeHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureFlatHazeHorz : cmp ECX, VMaxX jle StartTextureFlatHazeHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureFlatHazeHorz : sub ECX, EAX inc ECX add EDI, EAX cmp ECX, 0 jle NextRowTextureFlatHazeHorz mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov ECX, TempLen mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EAX, __LeftH ; U EAX is the Left Haze mov EDX, __RightH ; U EDX is the Right Haze sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDh, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov InLoopCount, BP mov EAX, InDeltaDh imul TempLen mov EBP, __LeftH sar EBP, 8 add EBP, EAX mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX mov EAX, __LeftI sar EAX, 8 mov ESI, __ShadeBuffer InLoopClippedTextureFlatHazeHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov AL, [EBX] add EDX, InDeltaDv mov EBX, EBP mov BL, [ESI+EAX] add EBX, __HazeBuffer add EBP, InDeltaDh mov BL, [EBX] mov [EDI], BL inc EDI dec InLoopCount jnz InLoopClippedTextureFlatHazeHorz pop ESI NextRowTextureFlatHazeHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutClippedTextureFlatHazeHorz EndLoopOutTextureFlatHazeHorz : pop ESI pop EDI pop EBP ret _DrawTextureFlatHazeHorz_ ENDP ; _DrawTextureGrdHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) ; ; EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped _DrawTextureGrdHazeHorz_ PROC C push EBP push EDI push ESI mov Color, EAX sub EDX, EBX mov LoopCount, EDX cmp EBX, 0 je CheckClippedTextureGrdHazeHorz mov EAX, __LeftDx imul EBX add __LeftX, EAX mov EAX, __RightDx imul EBX add __RightX, EAX mov EAX, __LeftDu imul EBX add __LeftU, EAX mov EAX, __RightDu imul EBX add __RightU, EAX mov EAX, __LeftDv imul EBX add __LeftV, EAX mov EAX, __RightDv imul EBX add __RightV, EAX mov EAX, __LeftDI imul EBX add __LeftI, EAX mov EAX, __RightDI imul EBX add __RightI, EAX mov EAX, __LeftDh imul EBX add __LeftH, EAX mov EAX, __RightDh imul EBX add __RightH, EAX mov EAX, __AddDest imul EBX add __DestBuffer, EAX CheckClippedTextureGrdHazeHorz : cmp ECX, 0 jne DrawTextureGrdHazeHorzClip DrawTextureGrdHazeHorzNoClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureGrdHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutTextureGrdHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V sub ECX, EAX ; U mov __DestBuffer, EBX ; V add EDI, EAX ; U inc ECX ; V cmp ECX, 0 jle NextRowTextureGrdHazeHorzNoClip mov EBP, ECX shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov EAX, __LeftI ; U mov EDX, __RightI ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EAX, __LeftH ; U mov EDX, __RightH ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDh, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov ECX, __LeftU mov EDX, __LeftV mov ESI, __LeftI sar ECX, 8 sar EDX, 8 sar ESI, 8 mov InLoopCount, BP mov EBP, __LeftH sar EBP, 8 InLoopTextureGrdHazeHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov EAX, ESI mov AL, [EBX] add EDX, InDeltaDv add EAX, __ShadeBuffer mov EBX, EBP mov BL, [EAX] add EBX, __HazeBuffer add EBP, InDeltaDh add ESI, InDeltaDI mov BL, [EBX] mov [EDI], BL inc EDI dec InLoopCount jnz InLoopTextureGrdHazeHorz pop ESI NextRowTextureGrdHazeHorzNoClip : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutTextureGrdHazeHorz jmp EndLoopOutTextureGrdHazeHorz DrawTextureGrdHazeHorzClip : cld mov ESI, LoopCount cmp ESI, 0 jle EndLoopOutTextureGrdHazeHorz adc EAX, 0 ; Make sure the loop starts with U pipe nop LoopOutClippedTextureGrdHazeHorz : mov EBX, __LeftX ; U mov EAX, EBX ; U add EBX, __LeftDx ; V sar EAX, 16 ; U EAX is the Left X mov __LeftX, EBX ; V mov EDX, __RightX ; U mov ECX, EDX ; U add EDX, __RightDx ; V sar ECX, 16 ; U ECX is the Right X mov __RightX, EDX ; V mov EBX, __DestBuffer ; U mov EDI, EBX ; U add EBX, __AddDest ; V mov __DestBuffer, EBX ; U mov TempLen, ECX sub TempLen, EAX inc TempLen mov EBX, 0 ; Check for Easy reject cmp EAX, VMaxX ; Left is greater than MaxX jg NextRowTextureGrdHazeHorz cmp ECX, VMinX ; Right is smaller than MinX jl NextRowTextureGrdHazeHorz ; Check for Left cmp EAX, VMinX jge CheckRightTextureGrdHazeHorz mov EBX, VMinX sub EBX, EAX mov EAX, VMinX ; Set Left to MinX ; Check for Right CheckRightTextureGrdHazeHorz : cmp ECX, VMaxX jle StartTextureGrdHazeHorz mov ECX, VMaxX ; Set Right to MaxX StartTextureGrdHazeHorz : sub ECX, EAX inc ECX add EDI, EAX cmp ECX, 0 jle NextRowTextureGrdHazeHorz mov EBP, TempLen shl EBP, 2 add EBP, __DivTable fld dword ptr [EBP] mov EBP, ECX ; EBP is the loop mov ECX, TempLen mov TempLen, EBX ; TempLen is now the skip pixel in x-direction mov EAX, __LeftI ; U mov EDX, __RightI ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDI, EAX mov EAX, __LeftH ; U mov EDX, __RightH ; U sub EDX, EAX sar EDX, 8 mov EAX, EDX sar EDX, 01Fh idiv ECX mov InDeltaDh, EAX mov EAX, __LeftU mov EDX, __RightU sub EDX, EAX sar EDX, 8 mov InDeltaDu, EDX fild InDeltaDu fmul st, st(1) fistp InDeltaDu mov EAX, __LeftV mov EDX, __RightV sub EDX, EAX sar EDX, 8 mov InDeltaDv, EDX fild InDeltaDv fmul st, st(1) fistp InDeltaDv fstp DummyFloat push ESI mov InLoopCount, BP mov EAX, InDeltaDh imul TempLen mov EBP, __LeftH sar EBP, 8 add EBP, EAX mov EAX, InDeltaDu imul TempLen mov ECX, __LeftU sar ECX, 8 add ECX, EAX mov EAX, InDeltaDI imul TempLen mov ESI, __LeftI sar ESI, 8 add ESI, EAX mov EAX, InDeltaDv imul TempLen mov EDX, __LeftV sar EDX, 8 add EDX, EAX InLoopClippedTextureGrdHazeHorz : mov EBX, 0 mov BH, DH mov BL, CH add ECX, InDeltaDu add EBX, __TextureBuffer mov EAX, ESI mov AL, [EBX] add EDX, InDeltaDv add EAX, __ShadeBuffer mov EBX, EBP mov BL, [EAX] add EBX, __HazeBuffer add EBP, InDeltaDh add ESI, InDeltaDI mov BL, [EBX] mov [EDI], BL inc EDI dec InLoopCount jnz InLoopClippedTextureGrdHazeHorz pop ESI NextRowTextureGrdHazeHorz : mov EAX, __LeftU mov EBX, __LeftV add EAX, __LeftDu add EBX, __LeftDv mov __LeftU, EAX mov __LeftV, EBX mov EAX, __RightU mov EBX, __RightV add EAX, __RightDu add EBX, __RightDv mov __RightU, EAX mov __RightV, EBX mov EAX, __LeftI mov EBX, __RightI add EAX, __LeftDI add EBX, __RightDI mov __LeftI, EAX mov __RightI, EBX mov EAX, __LeftH mov EBX, __RightH add EAX, __LeftDh add EBX, __RightDh mov __LeftH, EAX mov __RightH, EBX dec ESI jnz LoopOutClippedTextureGrdHazeHorz EndLoopOutTextureGrdHazeHorz : pop ESI pop EDI pop EBP ret _DrawTextureGrdHazeHorz_ ENDP END