445 lines
8.2 KiB
PHP
445 lines
8.2 KiB
PHP
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struc BLITTER
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{
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.dc.xmin rd 1 ; 0
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.dc.ymin rd 1 ; 4
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.dc.xmax rd 1 ; 8
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.dc.ymax rd 1 ; 12
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.sc:
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.sc.xmin rd 1 ; 16
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.sc.ymin rd 1 ; 20
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.sc.xmax rd 1 ; 24
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.sc.ymax rd 1 ; 28
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.dst_x rd 1 ; 32
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.dst_y rd 1 ; 36
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.src_x rd 1 ; 40
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.src_y rd 1 ; 44
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.w rd 1 ; 48
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.h rd 1 ; 52
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.bitmap rd 1 ; 56
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.stride rd 1 ; 60
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}
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virtual at 0
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BLITTER BLITTER
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end virtual
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align 4
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__L1OutCode:
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push ebx
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mov ebx, 8
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cmp edx, [eax]
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jl .L2
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xor ebx, ebx
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cmp edx, [eax+8]
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setg bl
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sal ebx, 2
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.L2:
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cmp ecx, [eax+4]
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jge .L3
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or ebx, 1
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jmp .L4
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.L3:
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cmp ecx, [eax+12]
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jle .L4
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or ebx, 2
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.L4:
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mov eax, ebx
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pop ebx
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ret
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align 4
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block_clip:
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push ebp
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push edi
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push esi
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push ebx
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sub esp, 4
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mov ebx, eax
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mov [esp], edx
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mov ebp, ecx
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mov ecx, [ecx]
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mov edx, [edx]
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call __L1OutCode
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mov esi, eax
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mov edx, [esp+28]
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mov ecx, [edx]
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.L21:
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mov eax, [esp+24]
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mov edx, [eax]
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mov eax, ebx
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call __L1OutCode
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mov edi, eax
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.L20:
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mov eax, edi
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and eax, esi
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jne .L9
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cmp esi, edi
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je .L9
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test esi, esi
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jne .L10
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test edi, 1
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je .L11
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mov eax, [ebx+4]
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jmp .L25
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.L11:
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test edi, 2
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je .L13
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mov eax, [ebx+12]
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.L25:
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mov edx, [esp+28]
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jmp .L22
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.L13:
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test edi, 4
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je .L14
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mov eax, [ebx+8]
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jmp .L26
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.L14:
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and edi, 8
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je .L12
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mov eax, [ebx]
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.L26:
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mov edx, [esp+24]
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.L22:
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mov [edx], eax
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.L12:
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mov eax, [esp+28]
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mov ecx, [eax]
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jmp .L21
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.L10:
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test esi, 1
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je .L16
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mov eax, [ebx+4]
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jmp .L23
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.L16:
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test esi, 2
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je .L18
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mov eax, [ebx+12]
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.L23:
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mov [ebp+0], eax
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jmp .L17
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.L18:
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test esi, 4
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je .L19
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mov eax, [ebx+8]
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jmp .L24
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.L19:
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and esi, 8
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je .L17
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mov eax, [ebx]
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.L24:
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mov edx, [esp]
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mov [edx], eax
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.L17:
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mov ecx, [ebp+0]
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mov eax, [esp]
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mov edx, [eax]
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mov eax, ebx
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call __L1OutCode
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mov esi, eax
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jmp .L20
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.L9:
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add esp, 4
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pop ebx
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pop esi
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pop edi
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pop ebp
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ret
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align 4
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blit_clip:
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.sx0 equ 36
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.sy0 equ 32
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.sx1 equ 28
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.sy1 equ 24
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.dx0 equ 20
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.dy0 equ 16
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.dx1 equ 12
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.dy1 equ 8
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push edi
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push esi
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push ebx
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sub esp, 40
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mov ebx, ecx
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mov edx, [ecx+BLITTER.src_x]
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mov [esp+.sx0], edx
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mov eax, [ecx+BLITTER.src_y]
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mov [esp+.sy0], eax
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add edx, [ecx+BLITTER.w]
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dec edx
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mov [esp+.sx1], edx
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add eax, [ecx+BLITTER.h]
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dec eax
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mov [esp+.sy1], eax
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lea ecx, [esp+.sy0]
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lea edx, [esp+.sx0]
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lea eax, [ebx+BLITTER.sc]
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lea esi, [esp+.sy1]
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mov [esp+4], esi
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lea esi, [esp+.sx1]
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mov [esp], esi
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call block_clip
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mov esi, 1
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test eax, eax
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jne .L28
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mov edi, [esp+.sx0]
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mov edx, [ebx+BLITTER.dst_x]
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add edx, edi
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sub edx, [ebx+BLITTER.src_x]
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mov [esp+.dx0], edx
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mov ecx, [esp+.sy0]
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mov eax, [ebx+BLITTER.dst_y]
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add eax, ecx
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sub eax, [ebx+BLITTER.src_y]
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mov [esp+.dy0], eax
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sub edx, edi
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add edx, [esp+.sx1]
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mov [esp+.dx1], edx
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sub eax, ecx
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add eax, [esp+.sy1]
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mov [esp+.dy1], eax
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lea ecx, [esp+.dy0]
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lea edx, [esp+.dx0]
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lea eax, [esp+.dy1]
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mov [esp+4], eax
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lea eax, [esp+.dx1]
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mov [esp], eax
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mov eax, ebx
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call block_clip
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test eax, eax
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jne .L28
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mov edx, [esp+.dx0]
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mov eax, [esp+.dx1]
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inc eax
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sub eax, edx
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mov [ebx+BLITTER.w], eax
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mov eax, [esp+.dy0]
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mov ecx, [esp+.dy1]
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inc ecx
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sub ecx, eax
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mov [ebx+BLITTER.h], ecx
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mov ecx, [ebx+BLITTER.src_x]
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add ecx, edx
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sub ecx, [ebx+BLITTER.dst_x]
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mov [ebx+BLITTER.src_x], ecx
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mov ecx, [ebx+BLITTER.src_y]
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add ecx, eax
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sub ecx, [ebx+BLITTER.dst_y]
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mov [ebx+BLITTER.src_y], ecx
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mov [ebx+BLITTER.dst_x], edx
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mov [ebx+BLITTER.dst_y], eax
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xor esi, esi
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.L28:
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mov eax, esi
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add esp, 40
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pop ebx
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pop esi
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pop edi
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purge .sx0
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purge .sy0
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purge .sx1
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purge .sy1
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purge .dx0
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purge .dy0
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purge .dx1
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purge .dy1
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ret
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align 4
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blit_32:
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push ebp
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push edi
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push esi
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push ebx
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sub esp, 72
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mov eax, [TASK_BASE]
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mov ebx, [eax-twdw + WDATA.box.width]
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mov edx, [eax-twdw + WDATA.box.height]
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xor eax, eax
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mov [esp+BLITTER.dc.xmin], eax
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mov [esp+BLITTER.dc.ymin], eax
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mov [esp+BLITTER.dc.xmax], ebx
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mov [esp+BLITTER.dc.ymax], edx
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mov [esp+BLITTER.sc.xmin], eax
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mov [esp+BLITTER.sc.ymin], eax
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mov eax, [ecx+24]
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dec eax
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mov [esp+BLITTER.sc.xmax], eax
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mov eax, [ecx+28]
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dec eax
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mov [esp+BLITTER.sc.ymax], eax
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mov eax, [ecx]
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mov [esp+BLITTER.dst_x], eax
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mov eax, [ecx+4]
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mov [esp+BLITTER.dst_y], eax
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mov eax, [ecx+16]
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mov [esp+BLITTER.src_x], eax
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mov eax, [ecx+20]
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mov [esp+BLITTER.src_y], eax
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mov eax, [ecx+8]
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mov [esp+BLITTER.w], eax
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mov eax, [ecx+12]
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mov [esp+BLITTER.h], eax
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mov eax, [ecx+32]
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mov [esp+56], eax
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mov eax, [ecx+36]
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mov [esp+60], eax
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mov ecx, esp
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call blit_clip
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test eax, eax
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jne .L57
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inc [mouse_pause]
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call [_display.disable_mouse]
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mov eax, [TASK_BASE]
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mov ebx, [esp+BLITTER.dst_x]
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mov ebp, [esp+BLITTER.dst_y]
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add ebx, [eax-twdw + WDATA.box.left]
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add ebp, [eax-twdw + WDATA.box.top]
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mov edi, ebp
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imul edi, [_display.pitch]
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imul ebp, [_display.width]
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add ebp, ebx
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add ebp, [_WinMapAddress]
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mov eax, [esp+BLITTER.src_y]
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imul eax, [esp+BLITTER.stride]
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mov esi, [esp+BLITTER.src_x]
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lea esi, [eax+esi*4]
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add esi, [esp+BLITTER.bitmap]
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mov ecx, [esp+BLITTER.h]
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mov edx, [esp+BLITTER.w]
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test ecx, ecx ;FIXME check clipping
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jz .L57
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test edx, edx
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jz .L57
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cmp [_display.bpp], 32
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jne .core_24
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lea edi, [edi+ebx*4]
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mov ebx, [CURRENT_TASK]
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align 4
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.outer32:
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xor ecx, ecx
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align 4
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.inner32:
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cmp [ebp+ecx], bl
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jne @F
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mov eax, [esi+ecx*4]
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mov [LFB_BASE+edi+ecx*4], eax
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@@:
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inc ecx
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dec edx
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jnz .inner32
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add esi, [esp+BLITTER.stride]
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add edi, [_display.pitch]
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add ebp, [_display.width]
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mov edx, [esp+BLITTER.w]
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dec [esp+BLITTER.h]
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jnz .outer32
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.done:
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dec [mouse_pause]
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call [draw_pointer]
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.L57:
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add esp, 72
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pop ebx
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pop esi
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pop edi
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pop ebp
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ret
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.core_24:
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lea ebx, [ebx+ebx*2]
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lea edi, [LFB_BASE+edi+ebx]
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mov ebx, [CURRENT_TASK]
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align 4
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.outer24:
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mov [esp+64], edi
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xor ecx, ecx
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align 4
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.inner24:
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cmp [ebp+ecx], bl
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jne @F
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mov eax, [esi+ecx*4]
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lea edi, [edi+ecx*2]
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mov [edi+ecx], ax
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shr eax, 16
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mov [edi+ecx+2], al
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@@:
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mov edi, [esp+64]
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inc ecx
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dec edx
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jnz .inner24
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add esi, [esp+BLITTER.stride]
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add edi, [_display.pitch]
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add ebp, [_display.width]
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mov edx, [esp+BLITTER.w]
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dec [esp+BLITTER.h]
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jnz .outer24
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jmp .done
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