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C/C++ Source or Header | 1996-04-15 | 102.4 KB | 4,496 lines

// lg3drasm.cpp // // Copyright (c) 1996 by Toshiaki Tsuji, all rights reserved. #include "stdgfx.h" #include "lg3dras.h" LONG _LeftX; LONG _LeftY; LONG _LeftU; LONG _LeftV; LONG _LeftI; LONG _LeftZ; LONG _LeftH; LONG _RightX; LONG _RightY; LONG _RightU; LONG _RightV; LONG _RightI; LONG _RightZ; LONG _RightH; LONG _LeftDx; LONG _LeftDy; LONG _LeftDu; LONG _LeftDv; LONG _LeftDI; LONG _LeftDz; LONG _LeftDh; LONG _RightDx; LONG _RightDy; LONG _RightDu; LONG _RightDv; LONG _RightDI; LONG _RightDz; LONG _RightDh; BYTE* _DestBuffer; BYTE* _TextureBuffer; LONG _AddDest; BYTE* _ShadeBuffer; BYTE* _BlendBuffer; BYTE* _HazeBuffer; float* _DivTable; LONG Color; LONG LoopCount; LONG VMinX; LONG VMaxX; LONG VMinY; LONG VMaxY; LONG TempLen; LONG TempVal; // Inner Loop Delta LONG InDeltaDI; LONG InDeltaDu; LONG InDeltaDv; LONG InDeltaDh; SHORT InLoopCount; float DummyFloat; // VOID _SetViewPortData ( LONG MinX, LONG MinY, LONG MaxX, LONG MaxY ) // // EAX = MinX, EDX = MinY, EBX = MaxX, ECX = MaxY VOID _SetViewPortData ( LONG MinX, LONG MinY, LONG MaxX, LONG MaxY ) { _asm { pushad mov EAX, MinX mov EDX, MinY mov EBX, MaxX mov ECX, MaxY mov VMinX, EAX mov VMinY, EDX mov VMaxX, EBX mov VMaxY, ECX popad } // End asm } // End of _SetViewPortData // VOID _DrawSolidNoHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawSolidNoHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawSolidNoHorz // VOID _DrawSolidGrdHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawSolidGrdHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawSolidGrdHorz // VOID _DrawTextureNoHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureNoHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureNoHorz // VOID _DrawTextureFlatHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureFlatHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureFlatHorz // VOID _DrawTextureGrdHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureGrdHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureGrdHorz //*************************************************** // // Transparent Routines // //*************************************************** // VOID _DrawSolidNoTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawSolidNoTransHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawSolidNoTransHorz // VOID _DrawSolidGrdTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawSolidGrdTransHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawSolidGrdTransHorz // VOID _DrawTextureNoTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureNoTransHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureNoTransHorz // VOID _DrawTextureFlatTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureFlatTransHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureFlatTransHorz // VOID _DrawTextureGrdTransHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureGrdTransHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureGrdTransHorz //*************************************************** // // Hazing Routines // //*************************************************** // VOID _DrawSolidNoHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawSolidNoHazeHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawSolidNoHazeHorz // VOID _DrawSolidGrdHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawSolidGrdHazeHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawSolidGrdHazeHorz // VOID _DrawTextureNoHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureNoHazeHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureNoHazeHorz // VOID _DrawTextureFlatHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureFlatHazeHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureFlatHazeHorz // VOID _DrawTextureGrdHazeHorz ( LONG Color, LONG LoopCount, LONG SkipRow, LONG SideClipped ) // // EAX = Color, EDX = LoopCount, EBX = SkipRow, ECX = SideClipped VOID _DrawTextureGrdHazeHorz ( LONG nColor, LONG nLoopCount, LONG SkipRow, LONG SideClipped ) { _asm { pushad mov EAX, nColor mov EDX, nLoopCount mov EBX, SkipRow mov ECX, SideClipped 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 : popad } // End asm } // End of _DrawTextureGrdHazeHorz