forked from KolibriOS/kolibrios
124 lines
1.8 KiB
PHP
124 lines
1.8 KiB
PHP
;esi - screen size
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;edi - pointer to image
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csi_width equ [esi+2]
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csi_height equ [esi]
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csi_bitspp equ [esi+4]
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csi_bytesps equ [esi+6]
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copy_screen_to_image:
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pusha
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xor edx,edx
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xor ecx,ecx
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xor ebx,ebx
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bt dword [use_rect.flags],1
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jc copy_area
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cmp csi_bitspp,word 24
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je .next_str_24
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cmp csi_bitspp,word 16
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je .next_str_16
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.next_str_32:
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push edx ebx
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xor ebx,ebx
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@@:
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;push eax
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mov eax,[gs:edx]
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mov [edi+ecx],ax
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shr eax,8
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mov [edi+ecx+2],ah
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;pop eax
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add ecx,3
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add edx,4;eax
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inc bx
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cmp bx,csi_width
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jl @b
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pop ebx edx
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add edx,csi_bytesps
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inc bx
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cmp bx,csi_height
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jl .next_str_32
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popa
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ret
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.next_str_24:
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push edx ebx
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xor ebx,ebx
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@@:
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;push eax
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mov eax,[gs:edx]
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mov [edi+ecx],ax
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shr eax,8
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mov [edi+ecx+2],ah
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;pop eax
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add ecx,3
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add edx,3;eax
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inc bx
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cmp bx,csi_width
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jl @b
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pop ebx edx
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add edx,csi_bytesps
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inc bx
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cmp bx,csi_height
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jl .next_str_24
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popa
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ret
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.next_str_16:
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push edx ebx
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xor ebx,ebx
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@@:
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;push eax
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mov eax,[gs:edx]
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shl eax, 3
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ror eax, 8
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shl ax, 2
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ror eax, 8
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shl al, 3
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mov [edi+ecx+2],al
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rol eax, 16
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mov [edi+ecx],ax
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;pop eax
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add ecx,3
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add edx,2
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inc bx
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cmp bx,csi_width
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jl @b
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pop ebx edx
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add edx,csi_bytesps
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inc bx
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cmp bx,csi_height
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jl .next_str_16
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popa
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ret
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copy_area:
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mov eax,[scr.bytesps]
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mov ebx,eax
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movzx ecx,word [rect.top]
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mul ecx
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movzx ecx,word [rect.width]
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shl ecx,2
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sub ebx,ecx
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movzx ecx,word [rect.left]
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shl ecx,2
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add eax,ecx
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movzx ecx,word [rect.height]
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mov edx,eax
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.next_str:
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movzx esi,word [rect.width]
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.next_pixel:
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mov eax,[gs:edx]
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mov [edi],ax
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shr eax,8
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mov [edi+2],ah
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add edx,4
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add edi,3
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dec esi
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jnz .next_pixel
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add edx,ebx
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loop .next_str
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popa
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ret |