Initial Source Code commit
Initial commit of original Tiberian Dawn and Red Alert source code converted to build as DLLs, and compatible with the release version of Command & Conquer Remastered.
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172
TIBERIANDAWN/WIN32LIB/REMAP.ASM
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172
TIBERIANDAWN/WIN32LIB/REMAP.ASM
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;
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; Copyright 2020 Electronic Arts Inc.
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;
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; TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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; software: you can redistribute it and/or modify it under the terms of
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; the GNU General Public License as published by the Free Software Foundation,
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; either version 3 of the License, or (at your option) any later version.
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; TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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; in the hope that it will be useful, but with permitted additional restrictions
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; under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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; distributed with this program. You should have received a copy of the
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; GNU General Public License along with permitted additional restrictions
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; with this program. If not, see [https://github.com/electronicarts/CnC_Remastered_Collection]>.
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;***************************************************************************
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;** C O N F I D E N T I A L --- W E S T W O O D A S S O C I A T E S **
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;***************************************************************************
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;* *
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;* Project Name : Westwood 32 bit Library *
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;* *
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;* File Name : REMAP.ASM *
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;* *
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;* Programmer : Phil W. Gorrow *
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;* *
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;* Start Date : July 1, 1994 *
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;* *
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;* Last Update : July 1, 1994 [PWG] *
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;* *
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;*-------------------------------------------------------------------------*
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;* Functions: *
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;* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - *
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IDEAL
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P386
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MODEL USE32 FLAT
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INCLUDE ".\drawbuff.inc"
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INCLUDE ".\gbuffer.inc"
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CODESEG
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PROC Buffer_Remap C NEAR
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USES eax,ebx,ecx,edx,esi,edi
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;*===================================================================
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;* Define the arguements that our function takes.
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;*===================================================================
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ARG this_object:DWORD
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ARG x0_pixel:DWORD
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ARG y0_pixel:DWORD
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ARG region_width:DWORD
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ARG region_height:DWORD
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ARG remap :DWORD
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;*===================================================================
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; Define some locals so that we can handle things quickly
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;*===================================================================
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local x1_pixel : DWORD
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local y1_pixel : DWORD
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local win_width : dword
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local counter_x : dword
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cmp [ remap ] , 0
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jz ??real_out
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; Clip Source Rectangle against source Window boundaries.
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mov esi , [ this_object ] ; get ptr to src
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xor ecx , ecx
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xor edx , edx
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mov edi , [ (GraphicViewPort esi) . GVPWidth ] ; get width into register
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mov ebx , [ x0_pixel ]
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mov eax , [ x0_pixel ]
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add ebx , [ region_width ]
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shld ecx , eax , 1
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mov [ x1_pixel ] , ebx
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inc edi
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shld edx , ebx , 1
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sub eax , edi
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sub ebx , edi
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shld ecx , eax , 1
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shld edx , ebx , 1
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mov edi,[ ( GraphicViewPort esi) . GVPHeight ] ; get height into register
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mov ebx , [ y0_pixel ]
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mov eax , [ y0_pixel ]
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add ebx , [ region_height ]
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shld ecx , eax , 1
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mov [ y1_pixel ] , ebx
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inc edi
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shld edx , ebx , 1
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sub eax , edi
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sub ebx , edi
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shld ecx , eax , 1
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shld edx , ebx , 1
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xor cl , 5
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xor dl , 5
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mov al , cl
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test dl , cl
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jnz ??real_out
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or al , dl
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jz ??do_remap
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test cl , 1000b
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jz ??scr_left_ok
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mov [ x0_pixel ] , 0
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??scr_left_ok:
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test cl , 0010b
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jz ??scr_bottom_ok
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mov [ y0_pixel ] , 0
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??scr_bottom_ok:
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test dl , 0100b
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jz ??scr_right_ok
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mov eax , [ (GraphicViewPort esi) . GVPWidth ] ; get width into register
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mov [ x1_pixel ] , eax
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??scr_right_ok:
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test dl , 0001b
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jz ??do_remap
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mov eax , [ (GraphicViewPort esi) . GVPHeight ] ; get width into register
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mov [ y1_pixel ] , eax
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??do_remap:
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cld
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mov edi , [ (GraphicViewPort esi) . GVPOffset ]
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mov eax , [ (GraphicViewPort esi) . GVPXAdd ]
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mov ebx , [ x1_pixel ]
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add eax , [ (GraphicViewPort esi) . GVPWidth ]
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add eax , [ (GraphicViewPort esi) . GVPPitch ]
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mov esi , eax
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mul [ y0_pixel ]
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add edi , [ x0_pixel ]
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sub ebx , [ x0_pixel ]
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jle ??real_out
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add edi , eax
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sub esi , ebx
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mov ecx , [ y1_pixel ]
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sub ecx , [ y0_pixel ]
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jle ??real_out
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mov eax , [ remap ]
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mov [ counter_x ] , ebx
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xor edx , edx
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??outer_loop:
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mov ebx , [ counter_x ]
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??inner_loop:
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mov dl , [ edi ]
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mov dl , [ eax + edx ]
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mov [ edi ] , dl
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inc edi
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dec ebx
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jnz ??inner_loop
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add edi , esi
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dec ecx
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jnz ??outer_loop
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??real_out:
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ret
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ENDP Buffer_Remap
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END
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