zdoom
/
qzdoom
mirror of https://github.com/ZDoom/qzdoom.git
0
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
qzdoom/src/a.nas

303 lines
6.9 KiB
Plaintext
Raw Blame History

; "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
; Ken Silverman's official web site: "http://www.advsys.net/ken"
; See the included license file "BUILDLIC.TXT" for license info.
; This file has been modified from Ken Silverman's original release
SECTION .data
%ifndef M_TARGET_LINUX
%define ylookup _ylookup
%define vplce _vplce
%define vince _vince
%define palookupoffse _palookupoffse
%define bufplce _bufplce
%define dc_iscale _dc_iscale
%define dc_colormap _dc_colormap
%define dc_count _dc_count
%define dc_dest _dc_dest
%define dc_source _dc_source
%define dc_texturefrac _dc_texturefrac
%define setupvlineasm _setupvlineasm
%define prevlineasm1 _prevlineasm1
%define vlineasm1 _vlineasm1
%define vlineasm4 _vlineasm4
%endif
EXTERN ylookup ; near
EXTERN vplce ; near
EXTERN vince ; near
EXTERN palookupoffse ; near
EXTERN bufplce ; near
EXTERN dc_iscale
EXTERN dc_colormap
EXTERN dc_count
EXTERN dc_dest
EXTERN dc_source
EXTERN dc_texturefrac
SECTION .text
ALIGN 16
GLOBAL setvlinebpl_
setvlinebpl_:
mov dword [fixchain1a+2], eax
mov dword [fixchain1b+2], eax
mov dword [fixchain2a+2], eax
ret
; pass it log2(texheight)
ALIGN 16
GLOBAL setupvlineasm
setupvlineasm:
mov ecx, [esp+4]
;First 2 lines for VLINEASM1, rest for VLINEASM4
mov byte [premach3a+2], cl
mov byte [mach3a+2], cl
mov byte [machvsh1+2], cl ;32-shy
mov byte [machvsh3+2], cl ;32-shy
mov byte [machvsh5+2], cl ;32-shy
mov byte [machvsh6+2], cl ;32-shy
mov ch, cl
sub ch, 16
mov byte [machvsh8+2], ch ;16-shy
neg cl
mov byte [machvsh7+2], cl ;shy
mov byte [machvsh9+2], cl ;shy
mov byte [machvsh10+2], cl ;shy
mov byte [machvsh11+2], cl ;shy
mov byte [machvsh12+2], cl ;shy
mov eax, 1
shl eax, cl
dec eax
mov dword [machvsh2+2], eax ;(1<<shy)-1
mov dword [machvsh4+2], eax ;(1<<shy)-1
ret
SECTION .rtext progbits alloc exec write align=64
;eax = xscale
;ebx = palookupoffse
;ecx = # pixels to draw-1
;edx = texturefrac
;esi = texturecolumn
;edi = buffer pointer
ALIGN 16
GLOBAL prevlineasm1
prevlineasm1:
mov ecx, [dc_count]
cmp ecx, 1
ja vlineasm1
mov eax, [dc_iscale]
mov edx, [dc_texturefrac]
add eax, edx
mov ecx, [dc_source]
premach3a: shr edx, 32
push ebx
push edi
mov edi, [dc_colormap]
xor ebx, ebx
mov bl, byte [ecx+edx]
mov ecx, [dc_dest]
mov bl, byte [edi+ebx]
pop edi
mov byte [ecx], bl
pop ebx
ret
GLOBAL vlineasm1
ALIGN 16
vlineasm1:
push ebx
push edi
push esi
push ebp
mov ecx, [dc_count]
mov ebp, [dc_colormap]
mov edi, [dc_dest]
mov eax, [dc_iscale]
mov edx, [dc_texturefrac]
mov esi, [dc_source]
fixchain1a: sub edi, 320
nop
nop
nop
beginvline:
mov ebx, edx
mach3a: shr ebx, 32
fixchain1b: add edi, 320
mov bl, byte [esi+ebx]
add edx, eax
dec ecx
mov bl, byte [ebp+ebx]
mov byte [edi], bl
jnz short beginvline
pop ebp
pop esi
pop edi
pop ebx
mov eax, edx
ret
;eax: -------temp1-------
;ebx: -------temp2-------
;ecx: dat dat dat dat
;edx: ylo2 ylo4
;esi: yhi1 yhi2
;edi: ---videoplc/cnt----
;ebp: yhi3 yhi4
;esp:
ALIGN 16
GLOBAL vlineasm4
vlineasm4:
mov ecx, [dc_count]
push ebp
push ebx
push esi
push edi
mov edi, [dc_dest]
mov eax, dword [ylookup+ecx*4-4]
add eax, edi
mov dword [machvline4end+2], eax
sub edi, eax
mov eax, dword [bufplce+0]
mov ebx, dword [bufplce+4]
mov ecx, dword [bufplce+8]
mov edx, dword [bufplce+12]
mov dword [machvbuf1+2], ecx
mov dword [machvbuf2+2], edx
mov dword [machvbuf3+2], eax
mov dword [machvbuf4+2], ebx
mov eax, dword [palookupoffse+0]
mov ebx, dword [palookupoffse+4]
mov ecx, dword [palookupoffse+8]
mov edx, dword [palookupoffse+12]
mov dword [machvpal1+2], ecx
mov dword [machvpal2+2], edx
mov dword [machvpal3+2], eax
mov dword [machvpal4+2], ebx
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
;edx: <20>v3lo <20>v1lo <20>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ
;esi: <20>v2hi v2lo <20> v3hi<68>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ
;ebp: <20>v0hi v0lo <20> v1hi<68>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
mov ebp, dword [vince+0]
mov ebx, dword [vince+4]
mov esi, dword [vince+8]
mov eax, dword [vince+12]
and esi, 0fffffe00h
and ebp, 0fffffe00h
machvsh9: rol eax, 88h ;sh
machvsh10: rol ebx, 88h ;sh
mov edx, eax
mov ecx, ebx
shr ecx, 16
and edx, 0ffff0000h
add edx, ecx
and eax, 000001ffh
and ebx, 000001ffh
add esi, eax
add ebp, ebx
;
mov eax, edx
and eax, 0ffff0000h
mov dword [machvinc1+2], eax
mov dword [machvinc2+2], esi
mov byte [machvinc3+2], dl
mov byte [machvinc4+2], dh
mov dword [machvinc5+2], ebp
mov ebp, dword [vplce+0]
mov ebx, dword [vplce+4]
mov esi, dword [vplce+8]
mov eax, dword [vplce+12]
and esi, 0fffffe00h
and ebp, 0fffffe00h
machvsh11: rol eax, 88h ;sh
machvsh12: rol ebx, 88h ;sh
mov edx, eax
mov ecx, ebx
shr ecx, 16
and edx, 0ffff0000h
add edx, ecx
and eax, 000001ffh
and ebx, 000001ffh
add esi, eax
add ebp, ebx
mov ecx, esi
jmp short beginvlineasm4
ALIGN 16
nop
nop
nop
beginvlineasm4:
machvsh1: shr ecx, 88h ;32-sh
mov ebx, esi
machvsh2: and ebx, 00000088h ;(1<<sh)-1
machvinc1: add edx, 88880000h
machvinc2: adc esi, 88888088h
machvbuf1: mov cl, byte [ecx+88888888h]
machvbuf2: mov bl, byte [ebx+88888888h]
mov eax, ebp
machvsh3: shr eax, 88h ;32-sh
machvpal1: mov cl, byte [ecx+88888888h]
machvpal2: mov ch, byte [ebx+88888888h]
mov ebx, ebp
shl ecx, 16
machvsh4: and ebx, 00000088h ;(1<<sh)-1
machvinc3: add dl, 88h
machvbuf3: mov al, byte [eax+88888888h]
machvinc4: adc dh, 88h
machvbuf4: mov bl, byte [ebx+88888888h]
machvinc5: adc ebp, 88888088h
machvpal3: mov cl, byte [eax+88888888h]
machvpal4: mov ch, byte [ebx+88888888h]
machvline4end: mov dword [edi+88888888h], ecx
fixchain2a: add edi, 88888888h
mov ecx, esi
jle short beginvlineasm4
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
;edx: <20>v3lo <20>v1lo <20>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ
;esi: <20>v2hi v2lo <20> v3hi<68>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ
;ebp: <20>v0hi v0lo <20> v1hi<68>
; <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
mov dword [vplce+8], esi
mov dword [vplce+0], ebp
;vplc2 = (esi<<(32-sh))+(edx>>sh)
;vplc3 = (ebp<<(32-sh))+((edx&65535)<<(16-sh))
machvsh5: shl esi, 88h ;32-sh
mov eax, edx
machvsh6: shl ebp, 88h ;32-sh
and edx, 0000ffffh
machvsh7: shr eax, 88h ;sh
add esi, eax
machvsh8: shl edx, 88h ;16-sh
add ebp, edx
mov dword [vplce+12], esi
mov dword [vplce+4], ebp
pop edi
pop esi
pop ebx
pop ebp
ret
Reference in New Issue View Git Blame Copy Permalink