474 lines
11 KiB
C
474 lines
11 KiB
C
/* $Id$
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*
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* Copyright (C) 1997-2001 Id Software, Inc.
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* Copyright (c) 2002 The Quakeforge Project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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** RW_IMP.C
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**
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** This file contains ALL Win32 specific stuff having to do with the
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** software refresh. When a port is being made the following functions
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** must be implemented by the port:
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**
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** SWimp_EndFrame
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** SWimp_Init
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** SWimp_SetPalette
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** SWimp_Shutdown
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*/
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#include "..\ref_soft\r_local.h"
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#include "rw_win.h"
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#include "winquake.h"
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// Console variables that we need to access from this module
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swwstate_t sww_state;
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/*
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** VID_CreateWindow
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*/
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#define WINDOW_CLASS_NAME "Quake 2"
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void VID_CreateWindow( int width, int height, int stylebits )
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{
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WNDCLASS wc;
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RECT r;
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cvar_t *vid_xpos, *vid_ypos, *vid_fullscreen;
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int x, y, w, h;
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int exstyle;
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vid_xpos = ri.Cvar_Get ("vid_xpos", "0", 0);
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vid_ypos = ri.Cvar_Get ("vid_ypos", "0", 0);
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vid_fullscreen = ri.Cvar_Get ("vid_fullscreen", "0", CVAR_ARCHIVE );
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if ( vid_fullscreen->value )
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exstyle = WS_EX_TOPMOST;
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else
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exstyle = 0;
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/* Register the frame class */
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wc.style = 0;
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wc.lpfnWndProc = (WNDPROC)sww_state.wndproc;
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wc.cbClsExtra = 0;
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wc.cbWndExtra = 0;
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wc.hInstance = sww_state.hInstance;
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wc.hIcon = 0;
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wc.hCursor = LoadCursor (NULL,IDC_ARROW);
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wc.hbrBackground = (void *)COLOR_GRAYTEXT;
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wc.lpszMenuName = 0;
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wc.lpszClassName = WINDOW_CLASS_NAME;
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if (!RegisterClass (&wc) )
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ri.Sys_Error (ERR_FATAL, "Couldn't register window class");
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r.left = 0;
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r.top = 0;
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r.right = width;
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r.bottom = height;
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AdjustWindowRect (&r, stylebits, FALSE);
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w = r.right - r.left;
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h = r.bottom - r.top;
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x = vid_xpos->value;
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y = vid_ypos->value;
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sww_state.hWnd = CreateWindowEx (
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exstyle,
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WINDOW_CLASS_NAME,
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"Quake 2",
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stylebits,
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x, y, w, h,
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NULL,
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NULL,
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sww_state.hInstance,
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NULL);
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if (!sww_state.hWnd)
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ri.Sys_Error (ERR_FATAL, "Couldn't create window");
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ShowWindow( sww_state.hWnd, SW_SHOWNORMAL );
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UpdateWindow( sww_state.hWnd );
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SetForegroundWindow( sww_state.hWnd );
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SetFocus( sww_state.hWnd );
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// let the sound and input subsystems know about the new window
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ri.Vid_NewWindow (width, height);
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}
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/*
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** SWimp_Init
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**
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** This routine is responsible for initializing the implementation
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** specific stuff in a software rendering subsystem.
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*/
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int SWimp_Init( void *hInstance, void *wndProc )
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{
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sww_state.hInstance = ( HINSTANCE ) hInstance;
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sww_state.wndproc = wndProc;
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return true;
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}
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/*
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** SWimp_InitGraphics
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**
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** This initializes the software refresh's implementation specific
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** graphics subsystem. In the case of Windows it creates DIB or
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** DDRAW surfaces.
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**
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** The necessary width and height parameters are grabbed from
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** vid.width and vid.height.
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*/
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static qboolean SWimp_InitGraphics( qboolean fullscreen )
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{
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// free resources in use
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SWimp_Shutdown ();
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// create a new window
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VID_CreateWindow (vid.width, vid.height, WINDOW_STYLE);
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// initialize the appropriate subsystem
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if ( !fullscreen )
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{
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if ( !DIB_Init( &vid.buffer, &vid.rowbytes ) )
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{
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vid.buffer = 0;
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vid.rowbytes = 0;
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return false;
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}
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}
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else
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{
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if ( !DDRAW_Init( &vid.buffer, &vid.rowbytes ) )
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{
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vid.buffer = 0;
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vid.rowbytes = 0;
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return false;
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}
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}
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return true;
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}
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/*
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** SWimp_EndFrame
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**
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** This does an implementation specific copy from the backbuffer to the
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** front buffer. In the Win32 case it uses BitBlt or BltFast depending
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** on whether we're using DIB sections/GDI or DDRAW.
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*/
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void SWimp_EndFrame (void)
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{
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if ( !sw_state.fullscreen )
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{
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if ( sww_state.palettized )
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{
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// holdpal = SelectPalette(hdcScreen, hpalDIB, FALSE);
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// RealizePalette(hdcScreen);
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}
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BitBlt( sww_state.hDC,
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0, 0,
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vid.width,
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vid.height,
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sww_state.hdcDIBSection,
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0, 0,
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SRCCOPY );
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if ( sww_state.palettized )
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{
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// SelectPalette(hdcScreen, holdpal, FALSE);
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}
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}
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else
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{
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RECT r;
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HRESULT rval;
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DDSURFACEDESC ddsd;
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r.left = 0;
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r.top = 0;
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r.right = vid.width;
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r.bottom = vid.height;
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sww_state.lpddsOffScreenBuffer->lpVtbl->Unlock( sww_state.lpddsOffScreenBuffer, vid.buffer );
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if ( sww_state.modex )
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{
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if ( ( rval = sww_state.lpddsBackBuffer->lpVtbl->BltFast( sww_state.lpddsBackBuffer,
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0, 0,
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sww_state.lpddsOffScreenBuffer,
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&r,
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DDBLTFAST_WAIT ) ) == DDERR_SURFACELOST )
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{
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sww_state.lpddsBackBuffer->lpVtbl->Restore( sww_state.lpddsBackBuffer );
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sww_state.lpddsBackBuffer->lpVtbl->BltFast( sww_state.lpddsBackBuffer,
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0, 0,
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sww_state.lpddsOffScreenBuffer,
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&r,
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DDBLTFAST_WAIT );
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}
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if ( ( rval = sww_state.lpddsFrontBuffer->lpVtbl->Flip( sww_state.lpddsFrontBuffer,
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NULL, DDFLIP_WAIT ) ) == DDERR_SURFACELOST )
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{
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sww_state.lpddsFrontBuffer->lpVtbl->Restore( sww_state.lpddsFrontBuffer );
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sww_state.lpddsFrontBuffer->lpVtbl->Flip( sww_state.lpddsFrontBuffer, NULL, DDFLIP_WAIT );
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}
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}
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else
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{
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if ( ( rval = sww_state.lpddsBackBuffer->lpVtbl->BltFast( sww_state.lpddsFrontBuffer,
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0, 0,
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sww_state.lpddsOffScreenBuffer,
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&r,
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DDBLTFAST_WAIT ) ) == DDERR_SURFACELOST )
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{
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sww_state.lpddsBackBuffer->lpVtbl->Restore( sww_state.lpddsFrontBuffer );
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sww_state.lpddsBackBuffer->lpVtbl->BltFast( sww_state.lpddsFrontBuffer,
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0, 0,
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sww_state.lpddsOffScreenBuffer,
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&r,
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DDBLTFAST_WAIT );
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}
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}
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memset( &ddsd, 0, sizeof( ddsd ) );
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ddsd.dwSize = sizeof( ddsd );
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sww_state.lpddsOffScreenBuffer->lpVtbl->Lock( sww_state.lpddsOffScreenBuffer, NULL, &ddsd, DDLOCK_WAIT, NULL );
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vid.buffer = ddsd.lpSurface;
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vid.rowbytes = ddsd.lPitch;
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}
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}
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/*
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** SWimp_SetMode
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*/
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rserr_t SWimp_SetMode( unsigned int *pwidth, unsigned int *pheight, int mode, qboolean fullscreen )
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{
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const char *win_fs[] = { "W", "FS" };
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rserr_t retval = rserr_ok;
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ri.Con_Printf (PRINT_ALL, "setting mode %d:", mode );
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if ( !ri.Vid_GetModeInfo( pwidth, pheight, mode ) )
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{
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ri.Con_Printf( PRINT_ALL, " invalid mode\n" );
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return rserr_invalid_mode;
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}
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ri.Con_Printf( PRINT_ALL, " %d %d %s\n", *pwidth, *pheight, win_fs[fullscreen] );
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sww_state.initializing = true;
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if ( fullscreen )
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{
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if ( !SWimp_InitGraphics( 1 ) )
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{
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if ( SWimp_InitGraphics( 0 ) )
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{
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// mode is legal but not as fullscreen
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fullscreen = 0;
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retval = rserr_invalid_fullscreen;
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}
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else
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{
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// failed to set a valid mode in windowed mode
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retval = rserr_unknown;
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}
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}
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}
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else
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{
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// failure to set a valid mode in windowed mode
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if ( !SWimp_InitGraphics( fullscreen ) )
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{
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sww_state.initializing = true;
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return rserr_unknown;
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}
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}
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sw_state.fullscreen = fullscreen;
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#if 0
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if ( retval != rserr_unknown )
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{
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if ( retval == rserr_invalid_fullscreen ||
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( retval == rserr_ok && !fullscreen ) )
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{
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SetWindowLong( sww_state.hWnd, GWL_STYLE, WINDOW_STYLE );
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}
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}
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#endif
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R_GammaCorrectAndSetPalette( ( const unsigned char * ) d_8to24table );
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sww_state.initializing = true;
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return retval;
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}
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/*
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** SWimp_SetPalette
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**
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** System specific palette setting routine. A NULL palette means
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** to use the existing palette. The palette is expected to be in
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** a padded 4-byte xRGB format.
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*/
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void SWimp_SetPalette( const unsigned char *palette )
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{
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// MGL - what the fuck was kendall doing here?!
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// clear screen to black and change palette
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// for (i=0 ; i<vid.height ; i++)
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// memset (vid.buffer + i*vid.rowbytes, 0, vid.width);
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if ( !palette )
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palette = ( const unsigned char * ) sw_state.currentpalette;
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if ( !sw_state.fullscreen )
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{
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DIB_SetPalette( ( const unsigned char * ) palette );
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}
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else
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{
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DDRAW_SetPalette( ( const unsigned char * ) palette );
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}
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}
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/*
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** SWimp_Shutdown
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**
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** System specific graphics subsystem shutdown routine. Destroys
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** DIBs or DDRAW surfaces as appropriate.
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*/
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void SWimp_Shutdown( void )
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{
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ri.Con_Printf( PRINT_ALL, "Shutting down SW imp\n" );
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DIB_Shutdown();
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DDRAW_Shutdown();
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if ( sww_state.hWnd )
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{
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ri.Con_Printf( PRINT_ALL, "...destroying window\n" );
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ShowWindow( sww_state.hWnd, SW_SHOWNORMAL ); // prevents leaving empty slots in the taskbar
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DestroyWindow (sww_state.hWnd);
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sww_state.hWnd = NULL;
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UnregisterClass (WINDOW_CLASS_NAME, sww_state.hInstance);
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}
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}
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/*
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** SWimp_AppActivate
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*/
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void SWimp_AppActivate( qboolean active )
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{
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if ( active )
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{
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if ( sww_state.hWnd )
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{
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SetForegroundWindow( sww_state.hWnd );
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ShowWindow( sww_state.hWnd, SW_RESTORE );
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}
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}
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else
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{
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if ( sww_state.hWnd )
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{
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if ( sww_state.initializing )
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return;
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if ( vid_fullscreen->value )
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ShowWindow( sww_state.hWnd, SW_MINIMIZE );
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}
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}
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}
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//===============================================================================
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/*
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================
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Sys_MakeCodeWriteable
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================
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*/
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void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
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{
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DWORD flOldProtect;
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if (!VirtualProtect((LPVOID)startaddr, length, PAGE_READWRITE, &flOldProtect))
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ri.Sys_Error(ERR_FATAL, "Protection change failed\n");
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}
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/*
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** Sys_SetFPCW
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**
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** For reference:
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**
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** 1
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** 5 0
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** xxxxRRPP.xxxxxxxx
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**
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** PP = 00 = 24-bit single precision
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** PP = 01 = reserved
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** PP = 10 = 53-bit double precision
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** PP = 11 = 64-bit extended precision
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**
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** RR = 00 = round to nearest
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** RR = 01 = round down (towards -inf, floor)
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** RR = 10 = round up (towards +inf, ceil)
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** RR = 11 = round to zero (truncate/towards 0)
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**
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*/
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#ifndef USE_ASM
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void Sys_SetFPCW (void)
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{
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}
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#else
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unsigned fpu_ceil_cw, fpu_chop_cw, fpu_full_cw, fpu_cw, fpu_pushed_cw;
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unsigned fpu_sp24_cw, fpu_sp24_ceil_cw;
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void Sys_SetFPCW( void )
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{
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__asm xor eax, eax
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__asm fnstcw word ptr fpu_cw
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__asm mov ax, word ptr fpu_cw
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__asm and ah, 0f0h
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__asm or ah, 003h ; round to nearest mode, extended precision
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__asm mov fpu_full_cw, eax
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__asm and ah, 0f0h
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__asm or ah, 00fh ; RTZ/truncate/chop mode, extended precision
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__asm mov fpu_chop_cw, eax
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__asm and ah, 0f0h
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__asm or ah, 00bh ; ceil mode, extended precision
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__asm mov fpu_ceil_cw, eax
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__asm and ah, 0f0h ; round to nearest, 24-bit single precision
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__asm mov fpu_sp24_cw, eax
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__asm and ah, 0f0h ; ceil mode, 24-bit single precision
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__asm or ah, 008h ;
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__asm mov fpu_sp24_ceil_cw, eax
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}
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#endif
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