mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-16 09:21:43 +00:00
327 lines
6.7 KiB
Text
327 lines
6.7 KiB
Text
%ifdef M_TARGET_WATCOM
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SEGMENT DATA PUBLIC ALIGN=16 CLASS=DATA USE32
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SEGMENT DATA
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%else
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SECTION .data
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%endif
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%ifndef M_TARGET_LINUX
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%define ylookup _ylookup
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%define vplce _vplce
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%define vince _vince
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%define palookupoffse _palookupoffse
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%define bufplce _bufplce
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%define dc_iscale _dc_iscale
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%define dc_colormap _dc_colormap
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%define dc_count _dc_count
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%define dc_dest _dc_dest
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%define dc_source _dc_source
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%define dc_texturefrac _dc_texturefrac
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%define dc_pitch _dc_pitch
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%define setupvlinetallasm _setupvlinetallasm
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%define vlinetallasm4 _vlinetallasm4
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%define vlinetallasmathlon4 _vlinetallasmathlon4
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%define vlinetallasm1 _vlinetallasm1
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%define prevlinetallasm1 _prevlinetallasm1
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%endif
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EXTERN vplce
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EXTERN vince
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EXTERN palookupoffse
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EXTERN bufplce
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EXTERN ylookup
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EXTERN dc_iscale
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EXTERN dc_colormap
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EXTERN dc_count
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EXTERN dc_dest
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EXTERN dc_source
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EXTERN dc_texturefrac
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EXTERN dc_pitch
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GLOBAL vlt4pitch
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GLOBAL vlt1pitch
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%ifdef M_TARGET_WATCOM
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SEGMENT CODE PUBLIC ALIGN=16 CLASS=CODE USE32
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SEGMENT CODE
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%else
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SECTION .text
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%endif
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ALIGN 16
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GLOBAL setpitch3
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setpitch3:
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mov [vltpitch+2], eax
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mov [vltpitcha+2],eax
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mov [vlt1pitch1+2], eax
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mov [vlt1pitch2+2], eax
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ret
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ALIGN 16
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GLOBAL setupvlinetallasm
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setupvlinetallasm:
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mov ecx, [esp+4]
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mov [shifter1+2], cl
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mov [shifter2+2], cl
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mov [shifter3+2], cl
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mov [shifter4+2], cl
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mov [shifter1a+2], cl
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mov [shifter2a+2], cl
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mov [shifter3a+2], cl
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mov [shifter4a+2], cl
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mov [preshift+2], cl
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mov [shift11+2], cl
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mov [shift12+2], cl
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ret
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SECTION .rtext progbits alloc exec write align=64
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ALIGN 16
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GLOBAL vlinetallasm4
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vlinetallasm4:
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push ebx
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mov eax, [bufplce+0]
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mov ebx, [bufplce+4]
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mov ecx, [bufplce+8]
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mov edx, [bufplce+12]
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mov [source1+3], eax
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mov [source2+3], ebx
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mov [source3+3], ecx
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mov [source4+3], edx
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mov eax, [palookupoffse+0]
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mov ebx, [palookupoffse+4]
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mov ecx, [palookupoffse+8]
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mov edx, [palookupoffse+12]
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mov [lookup1+2], eax
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mov [lookup2+2], ebx
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mov [lookup3+2], ecx
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mov [lookup4+2], edx
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mov eax, [vince+0]
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mov ebx, [vince+4]
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mov ecx, [vince+8]
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mov edx, [vince+12]
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mov [step1+2], eax
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mov [step2+2], ebx
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mov [step3+2], ecx
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mov [step4+1], edx
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push ebp
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push esi
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push edi
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mov ecx, [dc_count]
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mov edi, [dc_dest]
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mov eax, dword [ylookup+ecx*4-4]
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add eax, edi
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sub edi, eax
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mov [write1+2],eax
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inc eax
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mov [write2+2],eax
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inc eax
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mov [write3+2],eax
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inc eax
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mov [write4+2],eax
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mov ebx, [vplce]
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mov ecx, [vplce+4]
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mov esi, [vplce+8]
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mov eax, [vplce+12]
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jmp loopit
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ALIGN 16
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loopit:
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mov edx, ebx
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shifter1: shr edx, 24
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source1: movzx edx, BYTE [edx+0x88888888]
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lookup1: mov dl, [edx+0x88888888]
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write1: mov [edi+0x88888880], dl
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step1: add ebx, 0x88888888
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mov edx, ecx
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shifter2: shr edx, 24
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source2: movzx edx, BYTE [edx+0x88888888]
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lookup2: mov dl, [edx+0x88888888]
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write2: mov [edi+0x88888881], dl
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step2: add ecx, 0x88888888
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mov edx, esi
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shifter3: shr edx, 24
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source3: movzx edx, BYTE [edx+0x88888888]
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lookup3: mov dl, BYTE [edx+0x88888888]
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write3: mov [edi+0x88888882], dl
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step3: add esi, 0x88888888
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mov edx, eax
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shifter4: shr edx, 24
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source4: movzx edx, BYTE [edx+0x88888888]
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lookup4: mov dl, [edx+0x88888888]
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write4: mov [edi+0x88888883], dl
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step4: add eax, 0x88888888
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vltpitch: add edi, 320
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jle near loopit
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mov [vplce], ebx
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mov [vplce+4], ecx
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mov [vplce+8], esi
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mov [vplce+12], eax
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pop edi
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pop esi
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pop ebp
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pop ebx
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ret
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ALIGN 16
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GLOBAL vlinetallasmathlon4
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vlinetallasmathlon4:
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push ebx
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mov eax, [bufplce+0]
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mov ebx, [bufplce+4]
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mov ecx, [bufplce+8]
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mov edx, [bufplce+12]
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mov [source1a+3], eax
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mov [source2a+3], ebx
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mov [source3a+3], ecx
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mov [source4a+3], edx
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mov eax, [palookupoffse+0]
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mov ebx, [palookupoffse+4]
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mov ecx, [palookupoffse+8]
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mov edx, [palookupoffse+12]
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mov [lookup1a+2], eax
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mov [lookup2a+2], ebx
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mov [lookup3a+2], ecx
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mov [lookup4a+2], edx
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mov eax, [vince+0]
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mov ebx, [vince+4]
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mov ecx, [vince+8]
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mov edx, [vince+12]
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mov [step1a+2], eax
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mov [step2a+2], ebx
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mov [step3a+2], ecx
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mov [step4a+1], edx
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push ebp
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push esi
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push edi
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mov ecx, [dc_count]
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mov edi, [dc_dest]
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mov eax, dword [ylookup+ecx*4-4]
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add eax, edi
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sub edi, eax
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mov [write1a+2],eax
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inc eax
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mov [write2a+2],eax
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inc eax
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mov [write3a+2],eax
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inc eax
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mov [write4a+2],eax
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mov ebp, [vplce]
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mov ecx, [vplce+4]
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mov esi, [vplce+8]
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mov eax, [vplce+12]
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jmp loopita
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; Unfortunately, this code has not been carefully analyzed to determine
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; how well it utilizes the processor's instruction units. Instead, I just
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; kept rearranging code, seeing what sped it up and what slowed it down
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; until I arrived at this. The is the fastest version I was able to
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; manage, but that does not mean it cannot be made faster with careful
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; instructing shuffling.
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ALIGN 64
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loopita: mov edx, ebp
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mov ebx, ecx
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shifter1a: shr edx, 24
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shifter2a: shr ebx, 24
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source1a: movzx edx, BYTE [edx+0x88888888]
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source2a: movzx ebx, BYTE [ebx+0x88888888]
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step1a: add ebp, 0x88888888
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step2a: add ecx, 0x88888888
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lookup1a: mov dl, [edx+0x88888888]
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lookup2a: mov dh, [ebx+0x88888888]
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mov ebx, esi
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write1a: mov [edi+0x88888880], dl
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write2a: mov [edi+0x88888881], dh
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shifter3a: shr ebx, 24
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mov edx, eax
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source3a: movzx ebx, BYTE [ebx+0x88888888]
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shifter4a: shr edx, 24
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step3a: add esi, 0x88888888
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source4a: movzx edx, BYTE [edx+0x88888888]
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step4a: add eax, 0x88888888
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lookup3a: mov bl, [ebx+0x88888888]
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lookup4a: mov dl, [edx+0x88888888]
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write3a: mov [edi+0x88888882], bl
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write4a: mov [edi+0x88888883], dl
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vltpitcha: add edi, 320
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jle near loopita
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mov [vplce], ebp
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mov [vplce+4], ecx
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mov [vplce+8], esi
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mov [vplce+12], eax
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pop edi
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pop esi
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pop ebp
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pop ebx
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ret
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ALIGN 16
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GLOBAL prevlinetallasm1
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prevlinetallasm1:
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mov ecx, [dc_count]
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cmp ecx, 1
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ja vlinetallasm1
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mov eax, [dc_iscale]
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mov edx, [dc_texturefrac]
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add eax, edx
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mov ecx, [dc_source]
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preshift: shr edx, 16
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push ebx
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push edi
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mov edi, [dc_colormap]
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movzx ebx, byte [ecx+edx]
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mov ecx, [dc_dest]
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mov bl, byte [edi+ebx]
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pop edi
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mov byte [ecx], bl
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pop ebx
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ret
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ALIGN 16
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GLOBAL vlinetallasm1
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vlinetallasm1:
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push ebp
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push ebx
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push edi
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push esi
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mov ebp, [dc_count]
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mov ebx, [dc_texturefrac] ; ebx = frac
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mov edi, [dc_dest]
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mov ecx, ebx
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shift11: shr ecx, 16
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mov esi, [dc_source]
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mov edx, [dc_iscale]
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vlt1pitch1: sub edi, 0x88888888
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mov eax, [dc_colormap]
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loop2:
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movzx ecx, BYTE [esi+ecx]
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add ebx, edx
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vlt1pitch2: add edi, 0x88888888
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mov cl,[eax+ecx]
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mov [edi],cl
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mov ecx,ebx
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shift12: shr ecx,16
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dec ebp
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jnz loop2
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mov eax,ebx
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pop esi
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pop edi
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pop ebx
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pop ebp
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ret
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