451 lines
11 KiB
PHP
451 lines
11 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; VGA.INC ;;
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;; ;;
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;; 640x480 mode 0x12 VGA functions for MenuetOS ;;
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;; ;;
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;; Paul Butcher, paul.butcher@asa.co.uk ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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paletteVGA:
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;16 colour palette
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mov dx, 0x3c8
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mov al, 0
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out dx, al
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mov ecx, 16
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mov dx, 0x3c9
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xor eax, eax
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palvganew:
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mov al, 0
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test ah, 4
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jz palvgalbl1
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add al, 31
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test ah, 8
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jz palvgalbl1
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add al, 32
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palvgalbl1:
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out dx, al; red 0,31 or 63
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mov al, 0
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test ah, 2
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jz palvgalbl2
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add al, 31
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test ah, 8
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jz palvgalbl2
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add al, 32
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palvgalbl2:
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out dx, al; blue 0,31 or 63
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mov al, 0
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test ah, 1
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jz palvgalbl3
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add al, 31
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test ah, 8
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jz palvgalbl3
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add al, 32
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palvgalbl3:
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out dx, al; green 0,31 or 63
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add ah, 1
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loop palvganew
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; mov dx, 3ceh
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; mov ax, 0005h
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; out dx, ax
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ret
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palette320x200:
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mov edx, 0x3c8
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xor eax, eax
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out dx, al
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mov ecx, 256
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mov edx, 0x3c9
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xor eax, eax
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palnew:
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mov al, 0
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test ah, 64
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jz pallbl1
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add al, 21
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pallbl1:
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test ah, 128
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jz pallbl2
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add al, 42
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pallbl2:
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out dx, al
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mov al, 0
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test ah, 8
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jz pallbl3
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add al, 8
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pallbl3:
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test ah, 16
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jz pallbl4
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add al, 15
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pallbl4:
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test ah, 32
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jz pallbl5
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add al, 40
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pallbl5:
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out dx, al
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mov al, 0
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test ah, 1
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jz pallbl6
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add al, 8
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pallbl6:
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test ah, 2
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jz pallbl7
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add al, 15
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pallbl7:
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test ah, 4
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jz pallbl8
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add al, 40
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pallbl8:
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out dx, al
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add ah, 1
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loop palnew
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ret
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align 4
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uglobal
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novesachecksum dd 0x0
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EGA_counter db 0
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VGA_drawing_screen db 0
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VGA_8_pixels:
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rb 16
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temp:
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.cx dd 0
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endg
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align 4
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checkVga_N13:
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cmp [SCR_MODE], dword 0x13
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jne @f
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; cnvl:
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pushad
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cmp [EGA_counter], 1
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je novesal
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mov ecx, [MOUSE_X]
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cmp ecx, [novesachecksum]
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jne novesal
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popad
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@@:
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ret
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novesal:
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mov [novesachecksum], ecx
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mov ecx, 0
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movzx eax, word [MOUSE_Y]
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cmp eax, 100
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jge m13l3
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mov eax, 100
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m13l3:
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cmp eax, 480-100
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jbe m13l4
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mov eax, 480-100
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m13l4:
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sub eax, 100
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imul eax, 640*4
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add ecx, eax
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movzx eax, word [MOUSE_X]
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cmp eax, 160
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jge m13l1
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mov eax, 160
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m13l1:
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cmp eax, 640-160
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jbe m13l2
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mov eax, 640-160
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m13l2:
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sub eax, 160
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shl eax, 2
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add ecx, eax
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mov esi, [LFBAddress]
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add esi, ecx
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mov edi, VGABasePtr
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mov edx, 200
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mov ecx, 320
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cld
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m13pix:
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lodsd
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test eax, eax
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jz .save_pixel
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push eax
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mov ebx, eax
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and eax, (128+64+32) ; blue
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shr eax, 5
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and ebx, (128+64+32)*256; green
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shr ebx, 8+2
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add eax, ebx
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pop ebx
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and ebx, (128+64)*256*256; red
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shr ebx, 8+8
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add eax, ebx
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.save_pixel:
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stosb
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loop m13pix
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mov ecx, 320
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add esi, 4*(640-320)
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dec edx
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jnz m13pix
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mov [EGA_counter], 0
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popad
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ret
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VGA_drawbackground:
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; draw all
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cmp [SCR_MODE], dword 0x12
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jne .end
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pushad
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mov esi, [LFBAddress]
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mov edi, VGABasePtr
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mov ebx, 640/32; 640*480/(8*4)
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mov edx, 480
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@@:
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push ebx edx esi edi
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shl edx, 9
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lea edx, [edx+edx*4]
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add esi, edx
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shr edx, 5
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add edi, edx
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call VGA_draw_long_line
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pop edi esi edx ebx
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dec edx
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jnz @r
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call VGA_draw_long_line_1
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popad
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.end:
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ret
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VGA_draw_long_line:
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mov dx, 3ceh
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mov ax, 0ff08h
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cli
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out dx, ax
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mov ax, 0005h
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out dx, ax
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m12pix:
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call VGA_draw_32_pixels
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dec ebx
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jnz m12pix
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mov dx, 3c4h
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mov ax, 0ff02h
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out dx, ax
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mov dx, 3ceh
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mov ax, 0205h
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out dx, ax
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mov dx, 3ceh
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mov al, 08h
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out dx, al
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sti
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ret
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VGA_draw_32_pixels:
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xor eax, eax
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mov ebp, VGA_8_pixels
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mov [ebp], eax
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mov [ebp+4], eax
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mov [ebp+8], eax
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mov [ebp+12], eax
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mov ch, 4
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.main_loop:
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mov cl, 8
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.convert_pixels_to_VGA:
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lodsd ; eax = 24bit colour
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test eax, eax
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jz .end
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rol eax, 8
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mov al, ch
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ror eax, 8
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mov ch, 1
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dec cl
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shl ch, cl
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cmp al, 85
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jbe .p13green
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or [ebp], ch
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cmp al, 170
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jbe .p13green
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or [ebp+12], ch
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.p13green:
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cmp ah, 85
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jbe .p13red
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or [ebp+4], ch
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cmp ah, 170
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jbe .p13red
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or [ebp+12], ch
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.p13red:
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shr eax, 8
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cmp ah, 85
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jbe .p13cont
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or [ebp+8], ch
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cmp ah, 170
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jbe .p13cont
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or [ebp+12], ch
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.p13cont:
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ror eax, 8
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mov ch, ah
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inc cl
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.end:
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dec cl
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jnz .convert_pixels_to_VGA
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inc ebp
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dec ch
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jnz .main_loop
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push esi
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sub ebp, 4
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mov esi, ebp
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mov dx, 3c4h
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mov ah, 1h
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@@:
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mov al, 02h
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out dx, ax
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xchg ax, bp
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lodsd
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mov [edi], eax
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xchg ax, bp
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shl ah, 1
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cmp ah, 10h
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jnz @r
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add edi, 4
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pop esi
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ret
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VGA_putpixel:
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; eax = x
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; ebx = y
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mov ecx, eax
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mov eax, [esp+32-8+4] ; color
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shl ebx, 9
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lea ebx, [ebx+ebx*4] ; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> 5
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lea edx, [ebx+ecx*4] ; + x*BytesPerPixel (Vesa2.0 32)
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mov edi, edx
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add edi, [LFBAddress] ; + LFB address
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mov [edi], eax ; write to LFB for Vesa2.0
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shr edx, 5 ; change BytesPerPixel to 1/8
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mov edi, edx
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add edi, VGABasePtr ; address of pixel in VGA area
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and ecx, 0x07 ; bit no. (modulo 8)
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pushfd
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; edi = address, eax = 24bit colour, ecx = bit no. (modulo 8)
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xor edx, edx
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test eax, eax
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jz .p13cont
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cmp al, 85
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jbe .p13green
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or dl, 0x01
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cmp al, 170
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jbe .p13green
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or dl, 0x08
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.p13green:
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cmp ah, 85
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jbe .p13red
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or dl, 0x02
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cmp ah, 170
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jbe .p13red
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or dl, 0x08
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.p13red:
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shr eax, 8
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cmp ah, 85
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jbe .p13cont
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or dl, 0x04
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cmp ah, 170
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jbe .p13cont
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or dl, 0x08
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.p13cont:
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ror edx, 8
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inc cl
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xor eax, eax
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inc ah
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shr ax, cl
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mov dx, 3cfh
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cli
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out dx, al
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mov al, [edi] ; dummy read
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rol edx, 8
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mov [edi], dl
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popfd
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;.end:
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ret
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VGA__putimage:
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; ecx = size [x|y]
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; edx = coordinates [x|y]
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cmp [SCR_MODE], dword 0x12
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jne @f
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pushad
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rol edx, 16
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movzx eax, dx
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rol edx, 16
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movzx ebx, dx
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movzx edx, cx
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rol ecx, 16
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movzx ecx, cx
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call VGA_draw_bar_1
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popad
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@@:
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ret
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VGA_draw_bar:
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; eax cx
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; ebx cy
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; ecx xe
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; edx ye
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cmp [SCR_MODE], dword 0x12
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jne @f
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pushad
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sub ecx, eax
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sub edx, ebx
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and eax, 0xffff
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and ebx, 0xffff
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and ecx, 0xffff
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and edx, 0xffff
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call VGA_draw_bar_1
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popad
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@@:
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ret
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VGA_draw_bar_1:
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mov [temp.cx], eax
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mov eax, [TASK_BASE]
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add ebx, [eax-twdw + 4]
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mov eax, [eax-twdw + 0]
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add eax, [temp.cx]
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and eax, 0xfff8
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shl ebx, 9
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lea ebx, [ebx+ebx*4]; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> 5
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lea ebx, [ebx+eax*4] ; + x*BytesPerPixel (Vesa2.0 32)
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mov esi, ebx
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add esi, [LFBAddress] ; + LFB address
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shr ebx, 5 ; change BytesPerPixel to 1/8
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mov edi, ebx
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add edi, VGABasePtr ; address of pixel in VGA area
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mov ebx, ecx
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shr ebx, 5
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inc ebx
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.main_loop:
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call VGA_draw_long_line_1
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dec edx
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jnz .main_loop
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call VGA_draw_long_line_1
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ret
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VGA_draw_long_line_1:
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push ebx edx esi edi
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shl edx, 9
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lea edx, [edx+edx*4]
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add esi, edx
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shr edx, 5
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add edi, edx
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call VGA_draw_long_line
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pop edi esi edx ebx
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ret
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