1097 lines
31 KiB
PHP
1097 lines
31 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; GRAPH32.INC ;;
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;; ;;
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;; 32bpp graph engine for Kolibri-A ;;
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;; ;;
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;; art_zh (kolibri@jerdev.co.uk) Dec. 2010 : ;;
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;; - 4x2 granularity & tiled winmap structure ;;
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;; - speed-optimized line/box graphics ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 1708 $
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;*************************************************
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; getpixel
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;
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; in:
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; eax = x coordinate
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; ebx = y coordinate
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;
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; ret:
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; ecx = 00 RR GG BB
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get_pixel:
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mov ecx, [BytesPerScanLine]
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imul ecx, ebx
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lea ecx, [ecx+eax*4] ; ecx = x*4+(y*y multiplier)
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mov ecx, [ecx+LFB_BASE]
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and ecx, 0xffffff
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ret
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;-----------------------------------------------------------------------------------
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; esi : Buffer origin
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; edi : Screen origin
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; ebp : Map origin
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; ecx : block height (pix)
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; ebx : bit[24] = odd line; bh = temp; bl = current task
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align 4
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draw_aligned_box:
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pushad
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xor edx, edx
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.new_line:
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btr ebx, 26
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mov eax, [img_map_x]
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xor ecx, ecx
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cmp bl, byte[ebp] ; check the left tile first
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je .new_tile
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bts ebx, 26 ; ebx[26] = 1 if edi/esi pushed
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push edi
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push esi
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push [img_bitoffset]
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jmp .seek_visible
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.new_tile:
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inc ecx ; visible - scan the open space
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cmp ecx, eax
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jz .end_of_line
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cmp bl, byte[ebp+ecx]
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je .new_tile
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; overlapped? draw the last visible segment if so
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bts ebx, 26 ; check if edi/esi already pushed
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jc @f
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push edi
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push esi
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push [img_bitoffset]
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@@: call [img_draw_core_fn] ; bpp-specific helper (see below)
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.seek_visible:
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inc ecx
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cmp ecx, eax
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je .next_line
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cmp bl, byte[ebp+ecx]
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jne .seek_visible
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.got_visible:
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sub eax, ecx
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shl ecx, 4
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add edi, ecx ; shift the left edge
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bt ebx, 25 ; 1bpp?
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jc @f
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shr ecx, 2
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imul ecx, [img_bytes_per_pix]
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jmp .new_visible
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@@: shr ecx, 8 ; 2 tiles = 1 byte
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jnc .new_visible
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rol [img_bitoffset], 4
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jnc .new_visible
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inc ecx
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.new_visible:
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add esi, ecx
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xor ecx, ecx
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jmp .new_tile
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.end_of_line:
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call [img_draw_core_fn]
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.next_line:
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bt ebx, 26
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jnc @f
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pop [img_bitoffset]
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pop esi
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pop edi
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@@: inc edx
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cmp edx, [esp+24] ; stacked ecx = image height
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je .finish
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add edi, [BytesPerScanLine]
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add esi, [img_buf_line_size]
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btc ebx, 24 ; odd line?
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jnc .new_line
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add ebp, [_WinMapWidth]
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jmp .new_line
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.finish:
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popad
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ret
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;--------------------------------
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; ebx : bit[24] = odd line; bh = reserved; bl = current task
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; ecx : column height (pix)
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; edx : max tile offset: 0, 4, 8, or 12 bytes (1,2,3 or 4 pix to draw)
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; ebp : map origin
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; esi : buffer image origin
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; edi : LFB-origin (4byte-aligned)
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align 4
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draw_unaligned_edge:
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pushad
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mov eax, [img_buf_line_size]
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mov bh, dl ; store the 1st tile offset
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btr ebx, 24 ; check if the 1st line odd
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jnc .new_tile
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cmp bl, byte[ebp]
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jne @f
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call [img_draw_edge_fn] ; bpp-specific helper (see below)
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@@:
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dec ecx
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jz .exit
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add edi, [BytesPerScanLine]
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add ebp, [_WinMapWidth]
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add esi, eax
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.new_tile:
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cmp bl, byte[ebp]
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jne .skip_tile
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call [img_draw_edge_fn]
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dec ecx
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jz .exit
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add edi, [BytesPerScanLine]
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add esi, eax
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call [img_draw_edge_fn]
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dec ecx
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jz .exit
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add edi, [BytesPerScanLine]
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add ebp, [_WinMapWidth]
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add esi, eax
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jmp .new_tile
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.skip_tile:
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sub cx, 2
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jbe .exit
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add edi, [BytesPerScanLine]
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add edi, [BytesPerScanLine]
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add esi, eax
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add esi, eax
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add ebp, [_WinMapWidth]
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jmp .new_tile
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.exit:
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popad
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ret
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;-------------
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; unaligned edge helpers
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; esi -> left point of the image edge
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; edi -> left point of the screen edge
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; bh = edx = tile offset (0, 4, 8 or 12 bytes)
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align 4
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draw_edge_0bpp:
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push eax
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mov eax, [esi]
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.putpix:
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mov [edi+edx], eax
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sub dl, 4
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jae .putpix
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.exit:
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movzx edx, bh
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pop eax
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ret
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align 4
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draw_edge_32bpp:
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push eax
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.putpix:
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mov eax, [esi+edx]
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mov [edi+edx], eax
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sub dl, 4
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jae .putpix
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.exit:
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movzx edx, bh
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pop eax
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ret
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align 4
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draw_edge_24bpp:
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push eax esi
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xor dl, dl
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.putpix:
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mov eax, [esi]
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and eax, 0x00FFFFFF
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mov [edi+edx], eax
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cmp dl, bh
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je .exit
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add dl, 4
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add esi, 3
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jmp .putpix
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.exit:
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pop esi eax
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ret
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align 4
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draw_edge_8bpp:
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push eax esi ebp
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xor dl, dl
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mov ebp, [img_palette]
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.putpix:
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movzx eax, byte[esi]
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mov eax, [ebp+eax*4]
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mov [edi+edx], eax
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cmp dl, bh
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je .exit
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add dl, 4
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inc esi
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jmp .putpix
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.exit:
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pop ebp esi eax
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ret
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align 4
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draw_edge_1bpp:
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pushad
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movzx edx, bh
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add edx, edi
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mov ebp, [img_palette]
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mov ebx, [ebp+4] ; forecolor
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mov ebp, [ebp] ; backcolor
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mov ecx, [img_edgeoffset] ; cl = 1 << left_edge_pix_num
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mov eax, [esi]
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.testbit:
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test eax, ecx
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jnz @f
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mov eax, ebp
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jmp .putpix
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@@: mov eax, ebx
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.putpix:
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mov [edi], eax
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cmp edi, edx
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je .exit
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add edi, 4
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rol ecx, 1
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jmp .testbit
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.exit:
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popad
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ret
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draw_edge_16bpp:
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draw_core_16bpp:
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ret
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;-------------
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; aligned core helpers
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; esi -> left point address (buffer)
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; edi -> left point address (screen)
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; ecx = number of tiles to draw
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align 4
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draw_core_0bpp:
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push eax ecx edi
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pushfd
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; cli
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cld
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mov eax, [esi]
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shl ecx, 2
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rep stosd
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popfd
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pop edi ecx eax
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ret
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align 4
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draw_core_32bpp:
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push ecx esi edi
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pushfd
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; cli
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cld
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shl ecx, 2
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rep movsd
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popfd
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pop edi esi ecx
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ret
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align 4
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draw_core_24bpp:
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push eax ecx edx
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shl ecx, 2 ; ecx = numpixels
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dec ecx
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lea edx, [ecx*2+ecx] ; edx = buffer byte offset
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.putpix:
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mov eax, [esi+edx]
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and eax, 0x00FFFFFF
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mov [edi+ecx*4], eax
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dec ecx
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sub edx, 3
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jnb .putpix
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pop edx ecx eax
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ret
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align 4
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draw_core_8bpp:
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pushad
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mov ebp, [img_palette]
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.putpix:
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xor edx, edx
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mov eax, dword[esi] ; block of 4 pixels
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.putone:
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movzx ebx, al
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mov ebx, [ebp+ebx*4]
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mov [edi+edx*4], ebx
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shr eax, 8
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inc dl
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cmp dl, 4
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jnz .putone
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add esi, edx ;-)
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add edi, 16
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dec ecx
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jnz .putpix
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.exit:
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popad
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ret
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align 4
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draw_core_1bpp:
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pushad
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mov ebp, [img_palette]
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mov edx, [ebp+4] ; foreground color
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mov ebp, [ebp] ; background color
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mov ebx, [img_bitoffset]
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shl ecx, 2 ; 1 tyle = 4 pix
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.newblock:
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mov eax, [esi]
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.putpix:
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test ebx, eax
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jz .bkcolor
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mov [edi], edx
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jmp .nextpix
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.bkcolor:
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mov [edi], ebp
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.nextpix:
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dec ecx
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jz .exit
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rol ebx, 1
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jc .nextblock
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add edi, 4
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jmp .putpix
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.nextblock:
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add esi, 4
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jmp .newblock
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.exit:
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popad
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ret
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;-----------------------------------------
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virtual at esp
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putimg:
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.image_sx dd ? ; X-size (pix)
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.image_sy dd ? ; Y-size
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.stack_data = 2*4
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end virtual
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align 4
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; ebx -> Buffer origin
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; ecx = packed size [x|y]
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; edx = packed coordinates [x|y]
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; static variables required:
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; [img_draw_core_fn], [img_draw_edge_fn]
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; [img_bytes_per_pix], [img_buf_line_size]
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; [img_palette] (1bpp and 8bpp only)
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_putimage:
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; call [_display.disable_mouse]
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pushad
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sub esp, putimg.stack_data
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mov [img_buf_origin], ebx ; save pointer to image buffer
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mov esi, ebx ; pointer to image
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.unpack_coords:
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mov eax, ecx
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and ecx, 0xFFFF ; Ysize
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shr eax, 16 ; Xsize
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mov [putimg.image_sy], ecx
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mov [putimg.image_sx], eax
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mov eax, edx
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and edx, 0xFFFF ; Ytop
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shr eax, 16 ; Xleft
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.calculate_abs_coords:
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mov edi, [TASK_BASE]
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mov ebx, [edi-twdw + WDATA.box.left]
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mov ecx, [edi-twdw + WDATA.box.top]
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add ebx, eax
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add ecx, edx
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mov [img_screen_x], ebx ; abs Xleft
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; mov [img_screen_y], ecx ; ecx = abs Ytop ; hold it !
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.check_x_size:
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mov ebx, [edi-twdw + WDATA.box.width]
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inc ebx ; ebx = window Xsize
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sub ebx, eax ; eax = rel Xleft
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jbe .finish ; image is out of the window
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mov eax, [putimg.image_sx]
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cmp ebx, eax ; real_sx = MIN(wnd_sx-image_cx, image_sx);
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jae @f
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mov eax, ebx
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@@: dec eax
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mov [img_pix_x], eax
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.check_y_size:
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mov ebx, [edi-twdw + WDATA.box.height]
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inc ebx ; ebx = real window y-size
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sub ebx, edx ; edx = rel Ytop
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jbe .finish ; image isn't visible
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mov edx, [putimg.image_sy]
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cmp ebx, edx
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jae @f
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mov edx, ebx
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@@: mov [img_pix_y], edx
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.calculate_lfb_origin:
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mov edi, ecx ; ecx = absY
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imul edi, [BytesPerScanLine]
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mov eax, [img_screen_x] ; eax = absX
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lea edi, [edi+eax*4]
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add edi, LFB_BASE ; edi -> Screen origin
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mov [img_lfb_origin], edi
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.calculate_map_origin:
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xor ebx, ebx
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mov bl, byte [img_bytes_per_pix]
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or bl, bl
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jnz @f
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mov ecx, [img_buf_line_size]
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or cl, cl
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je @f
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bts ebx, 25
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@@: mov bl, byte [CURRENT_TASK] ; get process number
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mov ebp, ecx ; ecx = absY
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shr ebp, 1 ; CF= odd line
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jnc @f
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bts ebx, 24 ; ebx[24] = odd start line
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@@: imul ebp, [_WinMapWidth]
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add ebp, [_WinMapAddress]
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mov ecx, eax ; eax = absX
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shr ecx, 2
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add eax, [img_pix_x]
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inc eax
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shr eax, 2
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add eax, ebp
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; mov [img_map_right], eax ; right edge tile
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add ebp, ecx ; left edge Map origin
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mov ecx, [img_pix_y]
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sub eax, ebp
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jz .thin_bar ; special case: all image is 1 tile thick
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mov [img_map_x], eax ; tiles in row (excluding the right one)
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; ----- at this point:
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; esi = [img_buf_origin] -> buffered image
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; edi = [img_lfb_origin] -> LFB image (corner point, 0RGB format)
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; ebp -> corner tile position
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; ecx = [img_pix_y] = image height
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; bl = task #
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; ebx[24] = 1 if Ytop is odd
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; ebx[25] = 1 if 1bpp image
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.start:
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bt ebx, 25
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jnc @f
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xor eax, eax
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inc al
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mov [img_bitoffset], eax ; 1bpp image must be byte-aligned
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mov [img_edgeoffset], eax
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@@:
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mov edx, edi
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mov dh, 0x0C
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and dl, dh
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jz .go_right ; left edge already aligned
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.left_edge:
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sub dh, dl
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movzx edx, dh
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call draw_unaligned_edge
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dec [img_map_x]
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shr edi, 4
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inc edi ; align edi to the next 16-byte tile
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shl edi, 4
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mov [img_lfb_origin], edi ; core Screen origin
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shr edx, 2
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inc edx
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sub [img_pix_x], edx ; shrink image width
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bt ebx, 25
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jnc @f
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xchg dl, cl
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mov eax, [img_edgeoffset] ; that's for 1bpp images only
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shl eax, cl
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mov [img_edgeoffset], eax
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mov [img_bitoffset], eax
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xchg dl, cl
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@@: mov eax, edx
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imul eax, [img_bytes_per_pix] ; 0 for 1bbp bitmaps
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add esi, eax
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mov [img_buf_origin], esi ; core Buffer origin
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inc ebp ; core Map origin
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.go_right:
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mov eax, [img_map_x]
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mov edx, eax
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bt ebx, 25 ; 1bpp image ?
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jc .shift_mono
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shl eax, 2
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imul eax, [img_bytes_per_pix]
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jmp .get_right
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.shift_mono:
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shr eax, 1 ; 2 tiles = 1 byte Buffer offset
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jnc .get_right
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rol byte [img_edgeoffset], 4 ; odd number of tiles: shift 4bits
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.get_right:
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add esi, eax ; rightEdge Buffer origin
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push ebp
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add ebp, edx ; rightEdge Map origin
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mov eax, [img_pix_x]
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shl eax, 2 ; 1 pix = 4 bytes
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add eax, edi ; rightEdge last pix (LFB addr)
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shl edx, 4
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add edi, edx ; rightEdge Screen origin
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movzx edx, al
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mov eax, [img_map_x]
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and dl, 0x0C
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cmp dl, 0x0C
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je .core_block ; rightEdge is already tile-aligned
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.right_edge:
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call draw_unaligned_edge
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.core_block:
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or eax, eax ; empty central core?
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jz .finish
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mov ebp, [esp]
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mov edi, [img_lfb_origin]
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mov esi, [img_buf_origin]
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call draw_aligned_box
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|
.finish:
|
|
add esp, (putimg.stack_data + 4)
|
|
; call [_display.enable_mouse]
|
|
popad
|
|
ret
|
|
|
|
.thin_bar: ; < a special case > : one-tile-wide image
|
|
mov edx, [img_pix_x]
|
|
shl edx, 2 ; edx = rightmost tile offset (0, 4, 8, or 12 bytes)
|
|
call draw_unaligned_edge
|
|
add esp, putimg.stack_data
|
|
popad
|
|
ret
|
|
|
|
|
|
;align 64
|
|
;img_test_struct_32: ; 8 x 10
|
|
; dd 0x112233, 0x223344, 0x334455, 0x445566, 0x556677, 0x667788, 0x778899, 0x887766
|
|
; dd 0x223344, 0x334455, 0x445566, 0x556677, 0x667788, 0x777799, 0x887766, 0x997755
|
|
; dd 0x334455, 0x445566, 0x556677, 0x667788, 0x777799, 0x887766, 0x997755, 0xAA7744
|
|
; dd 0x445566, 0x556677, 0x667788, 0x777799, 0x887766, 0x997755, 0xAA7744, 0xBB7733
|
|
; dd 0x334455, 0x445566, 0x556677, 0x667788, 0x777799, 0x887766, 0x997755, 0xAA7744
|
|
; dd 0x223344, 0x334455, 0x445566, 0x556677, 0x667788, 0x777799, 0x887766, 0x997755
|
|
; dd 0x112233, 0x223344, 0x334455, 0x445566, 0x556677, 0x667788, 0x777799, 0x887766
|
|
; dd 0x001122, 0x112233, 0x223344, 0x334455, 0x445566, 0x556677, 0x667788, 0x777799
|
|
; dd 0x220000, 0x001122, 0x112233, 0x223344, 0x334455, 0x445566, 0x556677, 0x667788
|
|
; dd 0x441100, 0x220000, 0x001122, 0x112233, 0x223344, 0x334455, 0x445566, 0x556677
|
|
|
|
;align 64
|
|
;img_test_struct_24: ; 8 x 16
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
; dw 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211, 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB
|
|
; dw 0xBBAA, 0xAACC, 0xCCBB, 0xBBAA, 0xAACC, 0xCCBB, 0x1100, 0x0022, 0x2211, 0x1100, 0x0022, 0x2211
|
|
|
|
;align 64
|
|
;img_test_struct_8: ; 20 x 10
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
; db 0, 1, 2, 3, 4, 5, 6, 7, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0
|
|
|
|
;align 64
|
|
;img_test_struct_1: ; 16 x 10
|
|
; db 0x0F, 0xF0
|
|
; db 0x0F, 0xF0
|
|
; db 0x3C, 0xC3
|
|
; db 0x3C, 0xC3
|
|
; db 0xF0, 0x0F
|
|
; db 0xF0, 0x0F
|
|
; db 0x3C, 0xC3
|
|
; db 0x3C, 0xC3
|
|
; db 0x0F, 0xF0
|
|
; db 0x0F, 0xF0
|
|
|
|
;align 64
|
|
;img_test_palette: ; 6 colors
|
|
; dd 0x00BB2233, 0xAA4466, 0x995555, 0x00339966, 0x00884455, 0x00775566, 0x00664455, 0x00553344, 0x0
|
|
|
|
;**************************************************************************************
|
|
align 4
|
|
__sys_putpixel:
|
|
push edx
|
|
mov edx, [TASK_BASE]
|
|
add eax, [edx-twdw+WDATA.box.left]
|
|
add ebx, [edx-twdw+WDATA.box.top]
|
|
pop edx
|
|
_putpixel:
|
|
|
|
; eax = x coordinate
|
|
; ebx = y coordinate
|
|
; ecx = ?? RR GG BB ; 0x01000000 negation
|
|
; edi = 0x00000001 force
|
|
|
|
cmp [Screen_Max_X], eax
|
|
jb .exit0
|
|
cmp [Screen_Max_Y], ebx
|
|
jb .exit0
|
|
.check_forced:
|
|
test edi,1 ; force ?
|
|
jnz .checked
|
|
|
|
.not_forced:
|
|
push ebx eax
|
|
shr eax, 2
|
|
shr ebx, 1
|
|
imul ebx, [_WinMapWidth] ; win_map (X size)/2
|
|
add ebx, eax
|
|
mov al, byte [CURRENT_TASK]
|
|
mov ah, byte [_WinMapAddress+ebx]
|
|
cmp ah, al
|
|
pop eax ebx
|
|
jne .exit0
|
|
.checked:
|
|
push ebx
|
|
imul ebx, [BytesPerScanLine]
|
|
lea ebx, [ebx+eax*4]
|
|
bt ecx, 24
|
|
jnc .noneg
|
|
mov ecx, [LFB_BASE+ebx]
|
|
xor ecx, 0x00FFFFFF
|
|
.noneg:
|
|
mov [LFB_BASE+ebx], ecx
|
|
pop ebx
|
|
.exit0:
|
|
ret
|
|
|
|
|
|
|
|
;align 4
|
|
;_put_pixel: ; left for compatibility with Vesa20_putpixel32
|
|
;; eax = x
|
|
;; ebx = y
|
|
; imul ebx, [BytesPerScanLine] ; ebx = y * y multiplier
|
|
; lea edi, [ebx+eax*4] ; edi = x*4+(y*y multiplier)
|
|
;; mov eax, [esp+32-8+4] ; eax = color
|
|
; mov [LFB_BASE+edi], ecx
|
|
; ret
|
|
|
|
|
|
; DRAWLINE
|
|
|
|
align 4
|
|
__sys_draw_line:
|
|
call [_display.disable_mouse]
|
|
|
|
; draw a line
|
|
; eax = HIWORD = x1
|
|
; LOWORD = x2
|
|
; ebx = HIWORD = y1
|
|
; LOWORD = y2
|
|
; ecx = color
|
|
; edi = force ?
|
|
pusha
|
|
|
|
dl_x1 equ esp+20
|
|
dl_y1 equ esp+16
|
|
dl_x2 equ esp+12
|
|
dl_y2 equ esp+8
|
|
dl_dx equ esp+4
|
|
dl_dy equ esp+0
|
|
|
|
xor edx, edx ; clear edx
|
|
xor esi, esi ; unpack arguments
|
|
xor ebp, ebp
|
|
mov si, ax ; esi = x2
|
|
mov bp, bx ; ebp = y2
|
|
shr eax, 16 ; eax = x1
|
|
shr ebx, 16 ; ebx = y1
|
|
push eax ; save x1
|
|
push ebx ; save y1
|
|
push esi ; save x2
|
|
push ebp ; save y2
|
|
|
|
; checking x-axis...
|
|
sub esi, eax ; esi = x2-x1
|
|
push esi ; save y2-y1
|
|
jl .x2lx1 ; is x2 less than x1 ?
|
|
jg .no_vline ; x1 > x2 ?
|
|
mov edx, ebp ; else (if x1=x2)
|
|
call vline
|
|
push edx ; necessary to rightly restore stack frame at .exit
|
|
jmp .exit
|
|
.x2lx1:
|
|
neg esi ; get esi absolute value
|
|
.no_vline:
|
|
; checking y-axis...
|
|
sub ebp, ebx ; ebp = y2-y1
|
|
push ebp ; save y2-y1
|
|
jl .y2ly1 ; is y2 less than y1 ?
|
|
jg .no_hline ; y1 > y2 ?
|
|
mov edx, [dl_x2] ; else (if y1=y2)
|
|
call hline
|
|
jmp .exit
|
|
|
|
.y2ly1:
|
|
neg ebp ; get ebp absolute value
|
|
.no_hline:
|
|
cmp ebp, esi
|
|
jle .x_rules ; |y2-y1| < |x2-x1| ?
|
|
cmp [dl_y2], ebx ; make sure y1 is at the begining
|
|
jge .no_reverse1
|
|
neg dword [dl_dx]
|
|
mov edx, [dl_x2]
|
|
mov [dl_x2], eax
|
|
mov [dl_x1], edx
|
|
mov edx, [dl_y2]
|
|
mov [dl_y2], ebx
|
|
mov [dl_y1], edx
|
|
.no_reverse1:
|
|
mov eax, [dl_dx]
|
|
cdq ; extend eax sing to edx
|
|
shl eax, 16 ; using 16bit fix-point maths
|
|
idiv ebp ; eax = ((x2-x1)*65536)/(y2-y1)
|
|
mov edx, ebp ; edx = counter (number of pixels to draw)
|
|
mov ebp, 1 *65536 ; <<16 ; ebp = dy = 1.0
|
|
mov esi, eax ; esi = dx
|
|
jmp .y_rules
|
|
|
|
.x_rules:
|
|
cmp [dl_x2], eax ; make sure x1 is at the begining
|
|
jge .no_reverse2
|
|
neg dword [dl_dy]
|
|
mov edx, [dl_x2]
|
|
mov [dl_x2], eax
|
|
mov [dl_x1], edx
|
|
mov edx, [dl_y2]
|
|
mov [dl_y2], ebx
|
|
mov [dl_y1], edx
|
|
.no_reverse2:
|
|
xor edx, edx
|
|
mov eax, [dl_dy]
|
|
cdq ; extend eax sing to edx
|
|
shl eax, 16 ; using 16bit fix-point maths
|
|
idiv esi ; eax = ((y2-y1)*65536)/(x2-x1)
|
|
mov edx, esi ; edx = counter (number of pixels to draw)
|
|
mov esi, 1 *65536 ;<< 16 ; esi = dx = 1.0
|
|
mov ebp, eax ; ebp = dy
|
|
.y_rules:
|
|
mov eax, [dl_x1]
|
|
mov ebx, [dl_y1]
|
|
shl eax, 16
|
|
shl ebx, 16
|
|
align 4
|
|
.draw:
|
|
push eax ebx
|
|
shr eax, 16
|
|
shr ebx, 16
|
|
call _putpixel
|
|
pop ebx eax
|
|
add ebx, ebp ; y = y+dy
|
|
add eax, esi ; x = x+dx
|
|
dec edx
|
|
jnz .draw
|
|
; force last drawn pixel to be at (x2,y2)
|
|
mov eax, [dl_x2]
|
|
mov ebx, [dl_y2]
|
|
call _putpixel
|
|
.exit:
|
|
add esp, 6*4
|
|
popa
|
|
call [draw_pointer] ; mouse
|
|
ret
|
|
|
|
align 4
|
|
hline:
|
|
; ------------ draw a horizontal line -------------
|
|
; eax = x1
|
|
; edx = x2
|
|
; ebx = y
|
|
; ecx = color
|
|
; edi = force ?
|
|
cmp ebx, [Screen_Max_Y]
|
|
jge .out
|
|
pushad
|
|
|
|
bt ecx, 24 ; color inversion check
|
|
rcl edi,1 ; forced graphics check
|
|
|
|
mov ebp, ebx
|
|
shr ebp, 1
|
|
imul ebp, [_WinMapWidth] ; ebp = screen map base
|
|
add ebp, [_WinMapAddress]
|
|
|
|
cmp edx, eax ; to make sure x2 > x1
|
|
jge @f
|
|
xchg eax, edx
|
|
@@:
|
|
cmp eax, [Screen_Max_X]
|
|
jge .exit
|
|
|
|
mov esi, eax
|
|
shr esi, 4
|
|
add ebp, esi ; ebp -> win_map element
|
|
|
|
imul ebx, [BytesPerScanLine] ; ebx -> LFB pix_line
|
|
add ebx, LFB_BASE
|
|
|
|
cmp edx, [Screen_Max_X] ; last check
|
|
jb @f
|
|
mov edx, [Screen_Max_X]
|
|
|
|
@@: mov esi, ecx ; store color here
|
|
mov cl, byte [CURRENT_TASK] ;
|
|
mov ch, cl
|
|
mov [CURRENT_TASK+2], cx
|
|
mov [CURRENT_TASK+1], cl ; replicate byte to dword
|
|
|
|
.newsegment:
|
|
mov ecx, [ebp] ; check the line segment (16 pixels!)
|
|
xor ecx, [CURRENT_TASK]
|
|
; -- the line ---
|
|
jmp dword [hline.drawtable + edi*4] ; (C) Serge, 2010
|
|
|
|
|
|
align 4 ; internal loop
|
|
.invert_color:
|
|
mov esi, [ebx+eax*4]
|
|
xor esi, 0x00FFFFFF
|
|
align 4
|
|
.check_overlap:
|
|
or cl, cl
|
|
jz .putpixel
|
|
jmp .nextpixel
|
|
align 4
|
|
.invert_force:
|
|
mov esi, [ebx+eax*4]
|
|
xor esi, 0x00FFFFFF
|
|
align 4
|
|
.putpixel:
|
|
mov [ebx+eax*4], esi
|
|
align 4
|
|
.nextpixel:
|
|
inc eax
|
|
cmp eax, edx
|
|
ja .exit ; line drawn -- exit all loops
|
|
test al, 3
|
|
jz .newtile
|
|
.newpixel:
|
|
jmp dword [hline.drawtable + edi*4] ; the internal loop
|
|
.newtile:
|
|
inc ebp
|
|
test ebp, 3
|
|
jz .newsegment ; the external loop
|
|
shr ecx, 8
|
|
jmp dword [hline.drawtable + edi*4]
|
|
|
|
.exit:
|
|
mov eax, 0x0FF
|
|
and [CURRENT_TASK], eax
|
|
popad
|
|
.out:
|
|
ret
|
|
align 4
|
|
.drawtable:
|
|
dd .check_overlap ; general case
|
|
dd .invert_color
|
|
dd .putpixel ; force to draw it
|
|
dd .invert_force
|
|
|
|
|
|
align 4
|
|
vline:
|
|
; --------- draw a vertical line ------------
|
|
; eax = x
|
|
; ebx = y1
|
|
; edx = y2
|
|
; ecx = color
|
|
; edi = force ?
|
|
cmp eax, [Screen_Max_X]
|
|
jge .out
|
|
pushad
|
|
bt ecx, 24 ; color inversion check
|
|
rcl edi, 1 ; forced graphics check
|
|
|
|
cmp edx, ebx ; to make sure y2 > y1
|
|
jge @f
|
|
xchg ebx, edx
|
|
@@:
|
|
cmp ebx, [Screen_Max_Y]
|
|
jge .exit
|
|
mov ebp, ebx
|
|
shr ebp, 1
|
|
imul ebp, [_WinMapWidth]
|
|
add ebp, [_WinMapAddress]
|
|
mov esi, eax
|
|
shr esi, 1
|
|
shr esi, 1
|
|
add ebp, esi ; ebp = screen map at (x, y1)
|
|
push ebx
|
|
|
|
imul ebx, [BytesPerScanLine]
|
|
shl eax, 1
|
|
shl eax, 1
|
|
add eax, ebx
|
|
add eax, LFB_BASE
|
|
pop ebx ; restore ebx = y1
|
|
cmp edx, [Screen_Max_Y] ; the last check
|
|
jb .draw
|
|
mov edx, [Screen_Max_Y] ; to prevent off-screen drawing
|
|
|
|
.draw:
|
|
jmp dword [vline.drawtable + edi*4]
|
|
align 4
|
|
.invert_color:
|
|
mov ecx, [eax]
|
|
xor ecx, 0x00FFFFFF
|
|
align 4
|
|
.check_overlap:
|
|
movzx esi, byte [ebp]
|
|
cmp esi, [CURRENT_TASK]
|
|
je .putpixel
|
|
jmp .nextpixel
|
|
|
|
align 4
|
|
.invert_force:
|
|
mov ecx, [eax]
|
|
xor ecx, 0x00FFFFFF
|
|
align 4
|
|
.putpixel:
|
|
mov [eax], ecx
|
|
align 4
|
|
.nextpixel:
|
|
add eax, [BytesPerScanLine]
|
|
inc ebx
|
|
test bl, 1
|
|
jnz @f
|
|
add ebp, [_WinMapWidth]
|
|
@@:
|
|
cmp ebx, edx
|
|
ja .exit
|
|
jmp dword [vline.drawtable + edi*4]
|
|
.exit:
|
|
shr edi, 1
|
|
popad
|
|
|
|
.out:
|
|
ret
|
|
align 4
|
|
.drawtable:
|
|
dd .check_overlap ; general case
|
|
dd .invert_color
|
|
dd .putpixel ; force to draw it
|
|
dd .invert_force
|
|
|
|
|
|
;*************************************************
|
|
|
|
|
|
|
|
align 4
|
|
; eax xOrigin
|
|
; ebx yOrigin
|
|
; ecx xSize
|
|
; edx ySize
|
|
; edi color
|
|
|
|
_drawbar:
|
|
pushad
|
|
sub esp, putimg.stack_data
|
|
mov [img_bytes_per_pix], 0
|
|
mov [img_buf_line_size], 0
|
|
mov [img_draw_core_fn], draw_core_0bpp
|
|
mov [img_draw_edge_fn], draw_edge_0bpp
|
|
mov [putimg.image_sx], ecx
|
|
mov [putimg.image_sy], edx
|
|
mov edx, ebx
|
|
mov [img_palette], edi
|
|
mov esi, img_palette
|
|
mov [img_buf_origin], esi
|
|
|
|
jmp _putimage.calculate_abs_coords
|
|
; ret
|
|
|
|
|
|
draw_background:
|
|
pushad
|
|
pushfd
|
|
cld ; increment edi here!
|
|
mov ebp, [_WinMapAddress]
|
|
mov eax, 0x00337766 ; bgndcolor
|
|
mov bl, 1
|
|
mov edx, [Screen_Max_X]
|
|
shr edx, 1
|
|
mov edi, LFB_BASE
|
|
mov esi, [BytesPerScanLine]
|
|
.new_row:
|
|
xor ecx, ecx
|
|
.fill:
|
|
cmp byte [ebp+ecx], bl
|
|
jne .next
|
|
|
|
mov [edi+esi], eax ; fill all 8 pixels of this tile
|
|
stosd
|
|
mov [edi+esi], eax
|
|
stosd
|
|
mov [edi+esi], eax
|
|
stosd
|
|
mov [edi+esi], eax
|
|
stosd
|
|
.next: inc ecx
|
|
cmp ecx, [_WinMapWidth]
|
|
jb .fill
|
|
dec edx
|
|
jz .done
|
|
add ebp, ecx ; += [_WinMapWidth]
|
|
add edi, esi ; += [BytesPerScanLine]
|
|
jmp .new_row
|
|
.done:
|
|
popfd
|
|
popad
|
|
ret
|
|
|
|
|
|
drawbackground_stretch: ; left for future development
|
|
call drawbackground
|
|
ret
|
|
drawbackground_tiled: ; left for future development
|
|
call drawbackground
|
|
ret
|
|
|
|
uglobal
|
|
align 4
|
|
bgr_cur_line rd 1920 ; maximum width of screen
|
|
bgr_next_line rd 1920
|
|
endg
|
|
|
|
|
|
_init_background:
|
|
; mov edi, BgrAuxTable
|
|
; xor edx, edx
|
|
;.loop2:
|
|
; mov eax, edx
|
|
; shl eax, 8
|
|
; neg eax
|
|
; mov ecx, 0x200
|
|
;.loop1:
|
|
; mov byte [edi], ah
|
|
; inc edi
|
|
; add eax, edx
|
|
; loop .loop1
|
|
; add dl, 4
|
|
; jnz .loop2
|
|
mov byte [REDRAW_BACKGROUND], 1
|
|
; mov dword[BgrAuxTable], 0x00337766
|
|
ret
|
|
|
|
|
|
diff16 "GRAPH32 code end ",0,$
|
|
diff10 "GRAPH32 code size",get_pixel,$
|
|
|
|
|