gzdoom/src/asm_ia32/tmap3.asm

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2016-03-01 15:47:10 +00:00
%include "valgrind.inc"
%ifdef M_TARGET_WATCOM
SEGMENT DATA PUBLIC ALIGN=16 CLASS=DATA USE32
SEGMENT DATA
%else
SECTION .data
%endif
%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 dc_pitch _dc_pitch
%define setupvlinetallasm _setupvlinetallasm
%define vlinetallasm4 _vlinetallasm4
%define vlinetallasmathlon4 _vlinetallasmathlon4
%define vlinetallasm1 _vlinetallasm1
%define prevlinetallasm1 _prevlinetallasm1
%endif
EXTERN vplce
EXTERN vince
EXTERN palookupoffse
EXTERN bufplce
EXTERN ylookup
EXTERN dc_iscale
EXTERN dc_colormap
EXTERN dc_count
EXTERN dc_dest
EXTERN dc_source
EXTERN dc_texturefrac
EXTERN dc_pitch
GLOBAL vlt4pitch
GLOBAL vlt1pitch
%ifdef M_TARGET_WATCOM
SEGMENT CODE PUBLIC ALIGN=16 CLASS=CODE USE32
SEGMENT CODE
%else
SECTION .text
%endif
ALIGN 16
GLOBAL setpitch3
setpitch3:
mov [vltpitch+2], eax
mov [vltpitcha+2],eax
mov [vlt1pitch1+2], eax
mov [vlt1pitch2+2], eax
selfmod vltpitch, vlt1pitch2+6
ret
ALIGN 16
GLOBAL setupvlinetallasm
setupvlinetallasm:
mov ecx, [esp+4]
mov [shifter1+2], cl
mov [shifter2+2], cl
mov [shifter3+2], cl
mov [shifter4+2], cl
mov [shifter1a+2], cl
mov [shifter2a+2], cl
mov [shifter3a+2], cl
mov [shifter4a+2], cl
mov [preshift+2], cl
mov [shift11+2], cl
mov [shift12+2], cl
selfmod shifter1, shift12+6
ret
%ifdef M_TARGET_MACHO
SECTION .text align=64
GLOBAL _rtext_tmap3_start
_rtext_tmap3_start:
%else
SECTION .rtext progbits alloc exec write align=64
%endif
ALIGN 16
GLOBAL vlinetallasm4
vlinetallasm4:
push ebx
mov eax, [bufplce+0]
mov ebx, [bufplce+4]
mov ecx, [bufplce+8]
mov edx, [bufplce+12]
mov [source1+3], eax
mov [source2+3], ebx
mov [source3+3], ecx
mov [source4+3], edx
mov eax, [palookupoffse+0]
mov ebx, [palookupoffse+4]
mov ecx, [palookupoffse+8]
mov edx, [palookupoffse+12]
mov [lookup1+2], eax
mov [lookup2+2], ebx
mov [lookup3+2], ecx
mov [lookup4+2], edx
mov eax, [vince+0]
mov ebx, [vince+4]
mov ecx, [vince+8]
mov edx, [vince+12]
mov [step1+2], eax
mov [step2+2], ebx
mov [step3+2], ecx
mov [step4+1], edx
push ebp
push esi
push edi
mov ecx, [dc_count]
mov edi, [dc_dest]
mov eax, dword [ylookup+ecx*4-4]
add eax, edi
sub edi, eax
mov [write1+2],eax
inc eax
mov [write2+2],eax
inc eax
mov [write3+2],eax
inc eax
mov [write4+2],eax
mov ebx, [vplce]
mov ecx, [vplce+4]
mov esi, [vplce+8]
mov eax, [vplce+12]
selfmod loopit, vltpitch
jmp loopit
ALIGN 16
loopit:
mov edx, ebx
shifter1: shr edx, 24
source1: movzx edx, BYTE [edx+0x88888888]
lookup1: mov dl, [edx+0x88888888]
write1: mov [edi+0x88888880], dl
step1: add ebx, 0x88888888
mov edx, ecx
shifter2: shr edx, 24
source2: movzx edx, BYTE [edx+0x88888888]
lookup2: mov dl, [edx+0x88888888]
write2: mov [edi+0x88888881], dl
step2: add ecx, 0x88888888
mov edx, esi
shifter3: shr edx, 24
source3: movzx edx, BYTE [edx+0x88888888]
lookup3: mov dl, BYTE [edx+0x88888888]
write3: mov [edi+0x88888882], dl
step3: add esi, 0x88888888
mov edx, eax
shifter4: shr edx, 24
source4: movzx edx, BYTE [edx+0x88888888]
lookup4: mov dl, [edx+0x88888888]
write4: mov [edi+0x88888883], dl
step4: add eax, 0x88888888
vltpitch: add edi, 320
jle near loopit
mov [vplce], ebx
mov [vplce+4], ecx
mov [vplce+8], esi
mov [vplce+12], eax
pop edi
pop esi
pop ebp
pop ebx
ret
ALIGN 16
GLOBAL vlinetallasmathlon4
vlinetallasmathlon4:
push ebx
mov eax, [bufplce+0]
mov ebx, [bufplce+4]
mov ecx, [bufplce+8]
mov edx, [bufplce+12]
mov [source1a+3], eax
mov [source2a+3], ebx
mov [source3a+3], ecx
mov [source4a+3], edx
mov eax, [palookupoffse+0]
mov ebx, [palookupoffse+4]
mov ecx, [palookupoffse+8]
mov edx, [palookupoffse+12]
mov [lookup1a+2], eax
mov [lookup2a+2], ebx
mov [lookup3a+2], ecx
mov [lookup4a+2], edx
mov eax, [vince+0]
mov ebx, [vince+4]
mov ecx, [vince+8]
mov edx, [vince+12]
mov [step1a+2], eax
mov [step2a+2], ebx
mov [step3a+2], ecx
mov [step4a+1], edx
push ebp
push esi
push edi
mov ecx, [dc_count]
mov edi, [dc_dest]
mov eax, dword [ylookup+ecx*4-4]
add eax, edi
sub edi, eax
mov [write1a+2],eax
inc eax
mov [write2a+2],eax
inc eax
mov [write3a+2],eax
inc eax
mov [write4a+2],eax
mov ebp, [vplce]
mov ecx, [vplce+4]
mov esi, [vplce+8]
mov eax, [vplce+12]
selfmod loopita, vltpitcha
jmp loopita
; Unfortunately, this code has not been carefully analyzed to determine
; how well it utilizes the processor's instruction units. Instead, I just
; kept rearranging code, seeing what sped it up and what slowed it down
; until I arrived at this. The is the fastest version I was able to
; manage, but that does not mean it cannot be made faster with careful
; instructing shuffling.
ALIGN 64
loopita: mov edx, ebp
mov ebx, ecx
shifter1a: shr edx, 24
shifter2a: shr ebx, 24
source1a: movzx edx, BYTE [edx+0x88888888]
source2a: movzx ebx, BYTE [ebx+0x88888888]
step1a: add ebp, 0x88888888
step2a: add ecx, 0x88888888
lookup1a: mov dl, [edx+0x88888888]
lookup2a: mov dh, [ebx+0x88888888]
mov ebx, esi
write1a: mov [edi+0x88888880], dl
write2a: mov [edi+0x88888881], dh
shifter3a: shr ebx, 24
mov edx, eax
source3a: movzx ebx, BYTE [ebx+0x88888888]
shifter4a: shr edx, 24
step3a: add esi, 0x88888888
source4a: movzx edx, BYTE [edx+0x88888888]
step4a: add eax, 0x88888888
lookup3a: mov bl, [ebx+0x88888888]
lookup4a: mov dl, [edx+0x88888888]
write3a: mov [edi+0x88888882], bl
write4a: mov [edi+0x88888883], dl
vltpitcha: add edi, 320
jle near loopita
mov [vplce], ebp
mov [vplce+4], ecx
mov [vplce+8], esi
mov [vplce+12], eax
pop edi
pop esi
pop ebp
pop ebx
ret
ALIGN 16
GLOBAL prevlinetallasm1
prevlinetallasm1:
mov ecx, [dc_count]
cmp ecx, 1
ja vlinetallasm1
mov eax, [dc_iscale]
mov edx, [dc_texturefrac]
add eax, edx
mov ecx, [dc_source]
preshift: shr edx, 16
push ebx
push edi
mov edi, [dc_colormap]
movzx ebx, byte [ecx+edx]
mov ecx, [dc_dest]
mov bl, byte [edi+ebx]
pop edi
mov byte [ecx], bl
pop ebx
ret
ALIGN 16
GLOBAL vlinetallasm1
vlinetallasm1:
push ebp
push ebx
push edi
push esi
mov ebp, [dc_count]
mov ebx, [dc_texturefrac] ; ebx = frac
mov edi, [dc_dest]
mov ecx, ebx
shift11: shr ecx, 16
mov esi, [dc_source]
mov edx, [dc_iscale]
vlt1pitch1: sub edi, 0x88888888
mov eax, [dc_colormap]
loop2:
movzx ecx, BYTE [esi+ecx]
add ebx, edx
vlt1pitch2: add edi, 0x88888888
mov cl,[eax+ecx]
mov [edi],cl
mov ecx,ebx
shift12: shr ecx,16
dec ebp
jnz loop2
mov eax,ebx
pop esi
pop edi
pop ebx
pop ebp
ret
%ifdef M_TARGET_MACHO
GLOBAL _rtext_tmap3_end
_rtext_tmap3_end:
%endif