forked from KolibriOS/kolibrios
make background redraw faster
git-svn-id: svn://kolibrios.org@555 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond)
parent
43bd1e645f
commit
0e12a2072c
@ -282,6 +282,7 @@ RAMDISK equ (OS_BASE+0x0100000)
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RAMDISK_FAT equ (OS_BASE+0x0280000)
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FLOPPY_FAT equ (OS_BASE+0x0282000)
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BgrAuxTable equ (OS_BASE+0x0298000)
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; unused?
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SB16_Status equ (OS_BASE+0x02B0000)
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@ -640,6 +640,7 @@ no_lib_load:
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mov esi,boot_bgr
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call boot_log
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call init_background
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call calculatebackground
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; RESERVE SYSTEM IRQ'S JA PORT'S
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@ -176,7 +176,9 @@
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; 0x80280000 -> 281FFF ramdisk fat
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; 0x80282000 -> 283FFF floppy fat
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;
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; 0x80284000 -> 29FFFF free (112 Kb)
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; 0x80284000 -> 297FFF free (80 Kb)
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;
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; 0x80298000 -> 29ffff auxiliary table for background smoothing code
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;
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; 0x802A0000 -> 2B00ff wav device data
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; 0x802C0000 -> 2C3fff button info
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@ -921,55 +921,53 @@ vesa20_drawbackground_stretch:
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add esi, edx
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lea esi, [esi*3]
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add esi, [img_background]
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mov ecx, eax
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push eax edx esi
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; 3) Loop through redraw rectangle and copy background data
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push eax
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push edx
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push esi
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; 3) Smooth horizontal
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bgr_resmooth0:
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mov ecx, [esp+8]
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mov edx, [esp+4]
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mov esi, [esp]
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push edi
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mov edi, bgr_cur_line
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call smooth_line
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cmp dword [BgrDataHeight], 1
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jz bgr.no2nd
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bgr_resmooth1:
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mov ecx, [esp+8+4]
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mov edx, [esp+4+4]
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mov esi, [esp+4]
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add esi, [BgrDataWidth]
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add esi, [BgrDataWidth]
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add esi, [BgrDataWidth]
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mov edi, bgr_next_line
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call smooth_line
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bgr.no2nd:
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pop edi
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sdp3:
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xor esi, esi
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mov ecx, [esp+12]
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; 4) Loop through redraw rectangle and copy background data
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; Registers meaning:
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; edx:ecx = x * 2^32 * (BgrDataWidth-1) / (ScreenWidth-1)
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; esi -> bgr memory, edi -> output
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; esi = offset in current line, edi -> output
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; ebp = offset in WinMapAddress
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; dword [esp] = saved esi
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; dword [esp+4] = saved edx
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; dword [esp+8] = saved ecx
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; dword [esp] = offset in bgr data
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; qword [esp+4] = x * 2^32 * (BgrDataWidth-1) / (ScreenWidth-1)
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; qword [esp+12] = y * 2^32 * (BgrDataHeight-1) / (ScreenHeight-1)
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; dword [esp+20] = x
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; dword [esp+24] = y
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; precalculated constants:
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; qword [esp+28] = 2^32*(BgrDataHeight-1)/(ScreenHeight-1)
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; qword [esp+36] = 2^32*(BgrDataWidth-1)/(ScreenWidth-1)
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sdp3:
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sdp3a:
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cmp [ebp+WinMapAddress], byte 1
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jnz snbgp
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mov al, [esi+2]
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shl eax, 16
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mov ax, [esi]
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mov eax, [bgr_cur_line+esi]
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test ecx, ecx
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jz @f
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mov ebx, [esi+2]
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shr ebx, 8
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call overlapping_of_points
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@@:
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cmp dword [esp+12], 0
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jz .novert
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mov ebx, [BgrDataWidth]
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lea ebx, [ebx*3]
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add ebx, esi
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push eax
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mov al, [ebx+2]
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shl eax, 16
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mov ax, [ebx]
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test ecx, ecx
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jz .nohorz
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mov ebx, [ebx+2]
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shr ebx, 8
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call overlapping_of_points
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.nohorz:
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mov ebx, eax
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pop eax
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push ecx
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mov ecx, [esp+4+12]
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call overlapping_of_points
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pop ecx
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mov ebx, [bgr_next_line+esi]
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call [overlapping_of_points_ptr]
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.novert:
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mov [edi], ax
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shr eax, 16
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@ -981,15 +979,9 @@ snbgp:
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mov eax, [esp+20]
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add eax, 1
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mov [esp+20], eax
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add esi, 4
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cmp eax, [draw_data+32+RECT.right]
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ja sdp4
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add ecx, [esp+36]
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mov eax, edx
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adc edx, [esp+40]
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sub eax, edx
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lea eax, [eax*3]
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sub esi, eax
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jmp sdp3
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jbe sdp3a
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sdp4:
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; next y
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mov ebx, [esp+24]
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@ -1016,16 +1008,24 @@ sdp4:
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add [esp+12], eax
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mov eax, [esp+16]
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adc [esp+16], ebx
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pop esi edx ecx
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push ecx edx
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sub eax, [esp+16-4]
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sub eax, [esp+16]
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mov ebx, eax
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lea eax, [eax*3]
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imul eax, [BgrDataWidth]
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sub esi, eax
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push esi
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sub [esp], eax
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mov eax, [draw_data+32+RECT.left]
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mov [esp+20], eax
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jmp sdp3
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test ebx, ebx
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jz sdp3
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cmp ebx, -1
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jnz bgr_resmooth0
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push edi
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mov esi, bgr_next_line
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mov edi, bgr_cur_line
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mov ecx, [ScreenWidth]
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inc ecx
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rep movsd
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jmp bgr_resmooth1
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sdpdone:
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add esp, 44
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popad
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@ -1033,7 +1033,44 @@ sdpdone:
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call VGA_drawbackground
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ret
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uglobal
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align 4
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bgr_cur_line rd 1280 ; maximum width of screen
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bgr_next_line rd 1280
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endg
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smooth_line:
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mov al, [esi+2]
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shl eax, 16
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mov ax, [esi]
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test ecx, ecx
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jz @f
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mov ebx, [esi+2]
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shr ebx, 8
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call [overlapping_of_points_ptr]
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@@:
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stosd
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mov eax, [esp+20+8]
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add eax, 1
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mov [esp+20+8], eax
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cmp eax, [draw_data+32+RECT.right]
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ja @f
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add ecx, [esp+36+8]
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mov eax, edx
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adc edx, [esp+40+8]
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sub eax, edx
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lea eax, [eax*3]
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sub esi, eax
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jmp smooth_line
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@@:
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mov eax, [draw_data+32+RECT.left]
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mov [esp+20+8], eax
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ret
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align 16
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overlapping_of_points:
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if 0
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; this version of procedure works, but is slower than next version
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push ecx edx
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mov edx, eax
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push esi
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@ -1063,3 +1100,78 @@ overlapping_of_points:
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ror eax, 16
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pop ecx
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ret
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else
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push ecx edx
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mov edx, eax
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push esi
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shr ecx, 26
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mov esi, ecx
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mov ecx, ebx
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shl esi, 9
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movzx ebx, dl
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movzx eax, cl
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sub eax, ebx
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movzx ebx, dh
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add dl, [BgrAuxTable+(eax+0x100)+esi]
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movzx eax, ch
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sub eax, ebx
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add dh, [BgrAuxTable+(eax+0x100)+esi]
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ror ecx, 16
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ror edx, 16
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movzx eax, cl
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movzx ebx, dl
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sub eax, ebx
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add dl, [BgrAuxTable+(eax+0x100)+esi]
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pop esi
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mov eax, edx
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pop edx
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ror eax, 16
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pop ecx
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ret
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end if
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iglobal
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align 4
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overlapping_of_points_ptr dd overlapping_of_points
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endg
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init_background:
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mov edi, BgrAuxTable
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xor edx, edx
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.loop2:
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mov eax, edx
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shl eax, 8
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neg eax
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mov ecx, 0x200
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.loop1:
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mov byte [edi], ah
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inc edi
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add eax, edx
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loop .loop1
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add dl, 4
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jnz .loop2
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test byte [cpu_caps+(CAPS_MMX/8)], CAPS_MMX mod 8
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jz @f
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mov [overlapping_of_points_ptr], overlapping_of_points_mmx
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@@:
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ret
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align 16
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overlapping_of_points_mmx:
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movd mm0, eax
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movd mm4, eax
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movd mm1, ebx
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pxor mm2, mm2
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punpcklbw mm0, mm2
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punpcklbw mm1, mm2
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psubw mm1, mm0
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movd mm3, ecx
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psrld mm3, 24
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packuswb mm3, mm3
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packuswb mm3, mm3
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pmullw mm1, mm3
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psrlw mm1, 8
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packuswb mm1, mm2
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paddb mm4, mm1
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movd eax, mm4
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ret
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