379 lines
6.7 KiB
C
379 lines
6.7 KiB
C
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// $Log:$
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//
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// DESCRIPTION:
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// DOOM graphics stuff for SDL library
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//
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//-----------------------------------------------------------------------------
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static const char
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rcsid[] = "$Id: i_x.c,v 1.6 1997/02/03 22:45:10 b1 Exp $";
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#include <stdlib.h>
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#include "m_swap.h"
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#include "doomstat.h"
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#include "i_system.h"
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#include "v_video.h"
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#include "m_argv.h"
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#include "d_main.h"
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#include "doomdef.h"
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#include "kolibri.h"
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void BlitDIB();
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typedef struct SURFACE
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{
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unsigned char *pixels;
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int w, h;
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int pitch;
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int offset;
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} SURFACE;
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SURFACE screen;
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// Fake mouse handling.
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boolean grabMouse;
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// Blocky mode,
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// replace each 320x200 pixel with multiply*multiply pixels.
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// According to Dave Taylor, it still is a bonehead thing
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// to use ....
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static int multiply=2;
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static int disableVerticalMouse = 0;
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static int scr_w =0;
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static int scr_h =0;
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static int win_x, win_y;
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static int win_w, win_h;
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//int palette_color[256];
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static int lastmousex = 0;
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static int lastmousey = 0;
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boolean mousemoved = false;
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void I_ShutdownGraphics(void)
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{
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}
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//
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// I_StartFrame
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//
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void I_StartFrame (void)
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{
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// er?
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//printf("start new frame\n\r" );
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}
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int test_for_event(void)
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{ int retval;
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_asm
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{ push ebx
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push ecx
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push edx
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push esi
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push edi
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mov eax,11
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int 0x40
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mov [retval], eax
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pop edi
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pop esi
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pop edx
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pop ecx
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pop ebx
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};
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return retval;
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};
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void I_GetEvent(void)
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{
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event_t evnt;
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int val;
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int key;
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//printf("begin get_event()\n\r");
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do
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{ val= test_for_event();
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switch(val)
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{ case EV_REDRAW:
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BeginDraw();
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DrawWindow(win_x,win_y,win_w,win_h,0x404040,3,0,0,0);
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EndDraw();
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BlitDIB();
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break;
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case EV_KEY:
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if(!get_key(&key))
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{
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switch(key)
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{ case 0xE0:
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case 0xE1:
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continue;
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default:
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if(key&0x80)
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{ //printf("key released\n\r");
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evnt.type = ev_keyup;
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}
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else
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{ //printf("key pressed %x\n\r",key);
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evnt.type = ev_keydown;
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};
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key&=0x7F;
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evnt.data1=remap_key(key);
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if ( evnt.data1 != 0 )
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D_PostEvent(&evnt);
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continue;
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};
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};
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continue;
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case EV_BUTTON:
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switch(get_button_id())
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{ case 1:
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return;
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default:;
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};
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};
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}while(val);
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}
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//
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// I_StartTic
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//
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void I_StartTic (void)
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{
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I_GetEvent();
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}
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//
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// I_UpdateNoBlit
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//
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void I_UpdateNoBlit (void)
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{
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// what is this?
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}
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//
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// I_ReadScreen
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//
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void I_ReadScreen (byte* scr)
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{
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memcpy (scr, screens[0], SCREENWIDTH*SCREENHEIGHT);
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}
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//
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// I_SetPalette
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//
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unsigned int colors[256];
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void I_SetPalette (byte* palette)
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{
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int i;
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unsigned int r;
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unsigned int g;
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unsigned int b;
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for ( i=0; i<256; ++i )
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{
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r = gammatable[usegamma][*palette++];
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g = gammatable[usegamma][*palette++];
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b = gammatable[usegamma][*palette++];
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colors[i]= b|(g<<8)|(r<<16);
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}
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}
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void BeginDraw()
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{ _asm
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{ push ebx
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mov eax,12
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mov ebx, 1
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int 0x40
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pop ebx
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};
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};
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void EndDraw()
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{ _asm
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{ push ebx
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mov eax,12
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mov ebx, 2
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int 0x40
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pop ebx
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};
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};
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void I_InitGraphics(void)
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{
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static int firsttime=1;
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int frameX, frameY;
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if (!firsttime)
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return;
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firsttime = 0;
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if (M_CheckParm("-2"))
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multiply = 2;
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if (M_CheckParm("-3"))
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multiply = 3;
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if (M_CheckParm("-4"))
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multiply = 4;
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win_w = SCREENWIDTH * multiply;
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win_h = SCREENHEIGHT * multiply;
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// check if the user wants to grab the mouse (quite unnice)
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grabMouse = !!M_CheckParm("-grabmouse");
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/* [Petteri] New: Option to disable mouse vertical movement - useful
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for players used to Quake: */
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disableVerticalMouse = !!M_CheckParm("-novertmouse");
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/* Build and initialize the window: */
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frameX = 0;
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frameY = 18;
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GetScreenSize(&scr_w, &scr_h);
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win_x = (scr_w-win_w)/2;
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win_y = (scr_h-win_h)/2;
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// hCursor = LoadCursor( 0, IDC_ARROW );
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printf("I_InitGraphics: Client area: %ux%u\n\r", win_w, win_h);
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screen.pixels= (byte*) UserAlloc(640*400*4);
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screen.h = win_w;
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screen.w = win_h;
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screen.pitch=640;
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BeginDraw();
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DrawWindow(win_x,win_y,win_w,win_h,0x404040,3,0,0,0);
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EndDraw();
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}
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void conv(char *dst, char *src);
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void BlitDIB()
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{
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_asm
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{ push ebx
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push ecx
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push edx
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mov eax, 7
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mov ebx, dword ptr [screen]
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mov ecx, 0x02800190
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xor edx, edx
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int 0x40
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pop edx
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pop ecx
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pop ebx
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}
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};
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//
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// I_FinishUpdate
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//
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void I_FinishUpdate (void)
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{
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char *dst0;
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char *dst1;
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char *src;
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int x, y;
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dst0 = &((char *)screen.pixels)[0];
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dst1 = dst0+640*3;
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src= (char*)screens[0];
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y = SCREENHEIGHT;
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while (y--)
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{
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x = SCREENWIDTH;
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conv(dst0,src);
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src+=320;
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dst0+=640*3*2;
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dst1+=640*3*2;
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}
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BlitDIB();
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}
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void conv(char *dst, char *src)
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{
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_asm
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{
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push ebx
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push ecx
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push esi
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push edi
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mov ecx, 320
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mov esi, [src]
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mov edi, [dst]
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cld
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l1:
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lodsb
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movzx eax, al
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mov eax, [colors+eax*4]
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mov ebx, eax
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bswap ebx
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and ebx, 0xFF000000
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or eax, ebx
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mov [edi],eax
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mov [edi+640*3], eax
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shr eax, 8
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mov [edi+4], ax
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mov [edi+640*3+4], ax
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add edi, 6
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dec ecx
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jnz l1
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pop edi
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pop esi
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pop ecx
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pop ebx
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};
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};
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