forked from KolibriOS/kolibrios
New 2 dithering algorithms added to buf2d
git-svn-id: svn://kolibrios.org@3138 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
heavyiron
@@ -3451,7 +3451,7 @@ proc buf_curve_bezier, buffer:dword, coord_p0:dword,coord_p1:dword,coord_p2:dwor
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ret
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endp
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;䨫<><E4A8AB><EFBFBD><EFBFBD>
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;䨫<><E4A8AB><EFBFBD>
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align 4
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proc buf_filter_dither, buffer:dword, algor:dword
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pushad
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@@ -3464,7 +3464,7 @@ proc buf_filter_dither, buffer:dword, algor:dword
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;edi - pointer to 24bit bitmap
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;edx - x size
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;esi - y size
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lea edx,[edx*3]
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lea edx,[edx+edx*2]
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imul esi,edx
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;<3B><>।<EFBFBD><E0A5A4>塞 <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ᯮ<EFBFBD>짮<EFBFBD><ECA7AE><EFBFBD><EFBFBD>
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@@ -3478,7 +3478,17 @@ proc buf_filter_dither, buffer:dword, algor:dword
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call dither_1
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jmp .dither_end
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@@:
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call dither_2
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cmp dword[algor],2
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jne @f
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call dither_2
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jmp .dither_end
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@@:
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cmp dword[algor],3
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jne @f
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call dither_3
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jmp .dither_end
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@@:
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call dither_4
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jmp .dither_end
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.error:
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stdcall print_err,sz_buf2d_filter_dither,txt_err_n24b
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@@ -3488,7 +3498,7 @@ proc buf_filter_dither, buffer:dword, algor:dword
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endp
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align 16
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dither_0: ; Sierra Filter Lite algoritm
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dither_0: ; Sierra Filter Lite algorithm
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newp_0: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movzx ecx,byte[edi]
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@@ -3551,7 +3561,7 @@ newp_0: ; Dithering cycle
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ret
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align 16
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dither_1: ; Floyd-Steinberg algoritm
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dither_1: ; Floyd-Steinberg algorithm
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newp_1: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movzx ecx,byte[edi]
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@@ -3629,7 +3639,7 @@ newp_1: ; Dithering cycle
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ret
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align 16
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dither_2: ; Burkers algoritm
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dither_2: ; Burkes algorithm
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newp_2: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movsx ecx,byte[edi]
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@@ -3742,6 +3752,161 @@ newp_2: ; Dithering cycle
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ret
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align 16
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dither_3: ; Heavyiron_mod algorithm
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newp_3: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movzx ecx,byte[edi]
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cmp cl,255
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je .next
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test cl,cl
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jz .next
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jns @f
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dec ebx
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sub ecx,255
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@@:
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mov [edi],bl ; putpixel
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sar ecx,2 ; error/4
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movzx eax,byte[edi+3] ; pixel (x+1;y)
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add eax,ecx ; add error/4 to (x+1;y)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok
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@@:
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cmp eax,255
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jle .ok
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or al,255
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.ok:
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mov [edi+3],al ; putpixel
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movzx eax,byte[edi+edx-3] ; pixel (x-1;y+1)
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add eax,ecx ; add error/4 to (x-1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok1
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@@:
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cmp eax,255
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jle .ok1
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or al,255
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.ok1:
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mov [edi+edx-3],al ; putpixel
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movzx eax,byte[edi+edx] ; pixel (x;y+1)
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add eax,ecx ; add error/4 to (x;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok2
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@@:
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cmp eax,255
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jle .ok2
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or al,255
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.ok2:
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mov [edi+edx],al ; putpixel
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.next:
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inc edi
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dec esi
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jnz newp_3
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ret
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align 16
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dither_4: ; Atkinson algorithm
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newp_4: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movsx ecx,byte[edi]
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cmp cl,255
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je .next
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test cl,cl
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jz .next
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jns @f
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dec ebx
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@@:
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mov [edi],bl ; putpixel
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sar ecx,3 ; error/8
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movzx eax,byte[edi+3] ; pixel (x+1;y)
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add eax,ecx ; add error/8 to (x+1;y)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok
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@@:
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cmp eax,255
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jle .ok
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or al,255
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.ok:
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mov [edi+3],al ; putpixel
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movzx eax,byte[edi+edx] ; pixel (x;y+1)
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add eax,ecx ; add error/8 to (x;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok1
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@@:
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cmp eax,255
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jle .ok1
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or al,255
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.ok1:
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mov [edi+edx],al ; putpixel
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movzx eax,byte[edi+6] ; pixel (x+2;y)
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add eax,ecx ; add error/8 to (x+2;y)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok2
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@@:
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cmp eax,255
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jle .ok2
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or al,255
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.ok2:
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mov [edi+6],al ; putpixel
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movzx eax,byte[edi+edx-3] ; pixel (x-1;y+1)
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add eax,ecx ; add error/8 to (x-1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok3
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@@:
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cmp eax,255
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jle .ok3
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or al,255
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.ok3:
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mov [edi+edx-3],al ; putpixel
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movzx eax,byte[edi+edx+3] ; pixel (x+1;y+1)
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add eax,ecx ; add error/8 to (x+1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok4
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@@:
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cmp eax,255
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jle .ok4
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or al,255
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.ok4:
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mov [edi+edx+3],al ; putpixel
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movzx eax,byte[edi+edx+edx] ; pixel (x;y+2)
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add eax,ecx ; add error/8 to (x;y+2)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok5
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@@:
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cmp eax,255
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jle .ok5
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or al,255
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.ok5:
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mov [edi+edx+edx],al ; putpixel
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.next:
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inc edi
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dec esi
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jnz newp_4
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ret
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;*** <20>㭪樨 <20><><EFBFBD> ࠡ<><E0A0A1><EFBFBD> <20> <20><><EFBFBD>ᥫ쭮<E1A5AB> <20><><EFBFBD>䨪<EFBFBD><E4A8AA> ***
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