KolibriOS/kolibrios
13
14
Fork 12
Code Issues 113 Pull Requests 16 Actions Projects 1 Releases Wiki Activity

Support for 16bpp video modes (usefull for embedded devices such as 86duino with vortex86 VGA)

Browse Source 
git-svn-id: svn://kolibrios.org@5154 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr
2014-11-01 17:26:42 +00:00
parent 62b33c4994
commit 274d2c309b
8 changed files with 1431 additions and 839 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
kernel/trunk/kernel.asm
View File

@@ -1,6 +1,6 @@
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Copyright (C) KolibriOS team 2004-2013. All rights reserved.
;; Copyright (C) KolibriOS team 2004-2014. All rights reserved.
;; PROGRAMMING:
;; Ivan Poddubny
;; Marat Zakiyanov (Mario79)
@@ -434,7 +434,7 @@ high_code:
mov al, [BOOT_VARS+BOOT_DMA] ; DMA access
mov [allow_dma_access], al
movzx eax, byte [BOOT_VARS+BOOT_BPP] ; bpp
mov [_display.bpp], eax
mov [_display.bits_per_pixel], eax
mov [_display.vrefresh], 60
mov al, [BOOT_VARS+BOOT_DEBUG_PRINT] ; If nonzero, duplicates debug output to the screen
mov [debug_direct_print], al
@@ -480,34 +480,56 @@ high_code:
mov edi, BiosDisksData
rep movsd
; GRAPHICS ADDRESSES
setvideomode:
mov eax, [BOOT_VARS+BOOT_LFB]
mov [LFBAddress], eax
cmp [SCR_MODE], word 0100000000000000b
jge setvesa20
cmp [SCR_MODE], word 0x13 ; EGA 320*200 256 colors
je v20ga32
jmp v20ga24
cmp word [SCR_MODE], 0x0012 ; VGA (640x480 16 colors)
je .vga
cmp word [SCR_MODE], 0x0013 ; MCGA (320*200 256 colors)
je .32bpp
cmp byte [_display.bits_per_pixel], 32
je .32bpp
cmp byte [_display.bits_per_pixel], 24
je .24bpp
cmp byte [_display.bits_per_pixel], 16
je .16bpp
; cmp byte [_display.bits_per_pixel], 15
; je .15bpp
setvesa20:
mov [PUTPIXEL], dword Vesa20_putpixel24 ; Vesa 2.0
mov [GETPIXEL], dword Vesa20_getpixel24
cmp byte [_display.bpp], 24
jz v20ga24
v20ga32:
mov [PUTPIXEL], dword Vesa20_putpixel32
mov [GETPIXEL], dword Vesa20_getpixel32
jmp no_mode_0x12
v20ga24:
cmp [SCR_MODE], word 0x12 ; 16 C VGA 640x480
jne no_mode_0x12
mov [PUTPIXEL], dword VGA_putpixel
mov [GETPIXEL], dword Vesa20_getpixel32
no_mode_0x12:
.vga:
mov [PUTPIXEL], VGA_putpixel
mov [GETPIXEL], Vesa20_getpixel32 ; Conversion buffer is 32 bpp
mov [_display.bytes_per_pixel], 4 ; Conversion buffer is 32 bpp
jmp .finish
mov [MOUSE_PICTURE], dword mousepointer
; .15bpp:
; mov [PUTPIXEL], Vesa20_putpixel15
; mov [GETPIXEL], Vesa20_getpixel15
; mov [_display.bytes_per_pixel], 2
; jmp .finish
.16bpp:
mov [PUTPIXEL], Vesa20_putpixel16
mov [GETPIXEL], Vesa20_getpixel16
mov [_display.bytes_per_pixel], 2
jmp .finish
.24bpp:
mov [PUTPIXEL], Vesa20_putpixel24
mov [GETPIXEL], Vesa20_getpixel24
mov [_display.bytes_per_pixel], 3
jmp .finish
.32bpp:
mov [PUTPIXEL], Vesa20_putpixel32
mov [GETPIXEL], Vesa20_getpixel32
mov [_display.bytes_per_pixel], 4
; jmp .finish
.finish:
mov [MOUSE_PICTURE], mousepointer
mov [_display.check_mouse], check_mouse_area_for_putpixel
mov [_display.check_m_pixel], check_mouse_area_for_getpixel
@@ -4997,7 +5019,7 @@ sys_gs: ; direct screen access
mov [esp+32], eax
ret
.2: ; bits per pixel
mov eax, [_display.bpp]
mov eax, [_display.bits_per_pixel]
mov [esp+32], eax
ret
.3: ; bytes per scanline