214 lines
9.3 KiB
C++
214 lines
9.3 KiB
C++
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/*
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** Command & Conquer Red Alert(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (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. See the
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** 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, see <http://www.gnu.org/licenses/>.
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*/
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D A S S O C I A T E S **
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***************************************************************************
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* *
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* Project Name : LIBRARY *
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* *
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* File Name : VIDEO.C *
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* *
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* Programmer : David Dettmer *
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* *
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* Last Update : January 12, 1995 [PWG] *
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* *
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*-------------------------------------------------------------------------*
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* Functions: *
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* Find_Video_Mode -- Converts a dos video mode to a WWLIB video mode *
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* Get_Video_Mode -- Returns the current video mode. *
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* Set_Video_Mode -- Sets the requested video mode *
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* Set_Lores_Function_Pointers -- Sets up the lowres function pointers *
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* Set_HiRes_Function_Pointers -- Sets the HiRes function pointers *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include <dos.h>
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#include "iostream.h"
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#include "video.h"
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#include "descmgmt.h"
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#include "mcgaprim.h"
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#include "gbuffer.h"
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#include "vbuffer.h"
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#include "wwmem.h"
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#include "playcd.h"
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/***************************************************************************
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* VESA_INFO -- Debug routine which displays vesa info to stdout *
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* *
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* INPUT: none *
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* *
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* OUTPUT: none *
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* *
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* WARNINGS: *
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* *
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* *
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* HISTORY: *
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* 11/22/1994 PWG : Created. *
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*=========================================================================*/
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void Vesa_Info(int vesa_mode)
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{
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UINT paras;
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USHORT longest ;
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union REGS regs;
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struct SREGS sregs;
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SEGSEL VInfoSel ;
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VesaInfoType * VInfo ;
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SEGSEL ModeInfoSel ;
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VesaModeInfoType * ModeInfo ;
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unsigned temp ;
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short * ptr ;
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char buff [ 256 ] ;
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short mode_table [][4] = { { 0x100 , 640 , 400 , 256 },
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{ 0x101 , 640 , 480 , 256 },
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{ 0x103 , 800 , 600 , 256 },
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} ;
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cout << "\n\nWWESTWOOD STUDIOS. Vesa Driver attributes.\n" ;
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// verifie that this is a standard VESA MODE
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if ( (vesa_mode < VESA_640X400_256) || ( vesa_mode > VESA_TEXT_132X60 )) {
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cout << "this is not a standard VESA mode\n" ;
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return ;
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}
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// Compute size of VesaInfo structure in paragraphs
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paras = ( sizeof(VesaInfoType) + 15 ) >> 4 ;
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// Alloc real-mode memory for VESA structure.
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if ( DPMI_real_alloc ( paras , & VInfoSel , & longest ) ) return ;
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VInfo = ( VesaInfoType * ) ( VInfoSel . seg << 4 ) ;
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// Compute size of VesaModeInfo structure in paragraphs
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paras = ( sizeof(VesaModeInfoType) + 15 ) >> 4 ;
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//Alloc real-mode memory for VesaModeInfoType structure.
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if ( DPMI_real_alloc ( paras , & ModeInfoSel , & longest ) )
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{
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DPMI_real_free ( VInfoSel ) ;
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return ;
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}
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ModeInfo = ( VesaModeInfoType * ) ( ModeInfoSel . seg << 4 ) ;
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// Get Read Vesa Driver Vesa
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regs . x . eax = 0x4f00 ;
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regs . x . edi = 0 ;
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sregs . es = VInfoSel . seg ;
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DPMI_real_intr ( 0x10 , & regs , & sregs );
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regs . x . eax &= 0xffff ;
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if ( regs . x . eax != 0x004F) {
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cout << "\nNot Vesa Driver Present\n" ;
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DPMI_real_free ( ModeInfoSel ) ;
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DPMI_real_free ( VInfoSel ) ;
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return ;
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}
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temp = ( unsigned ) VInfo->AvailModes ;
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ptr = ( short * ) ( ( ( temp & 0xffff0000 ) >> 12 ) + ( temp & 0xffff ) ) ;
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cout << "Available Video Modes\n" ;
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for ( ; * ptr != -1 ; ptr ++ )
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for ( temp = 0 ; temp < 3 ; temp ++ )
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if ( * ptr == mode_table [ temp ] [ 0 ] ) {
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sprintf ( buff , "%d\t%d x %d x %d\n" ,
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mode_table [ temp ] [ 0 ],
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mode_table [ temp ] [ 1 ],
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mode_table [ temp ] [ 2 ],
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mode_table [ temp ] [ 3 ] ) ;
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cout << buff ;
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}
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// Get Info for this particular graphic mode
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regs . x . eax = 0x4F01;
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regs . x . ecx = vesa_mode;
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regs . x . edi = 0 ;
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sregs . es = ModeInfoSel . seg ;
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DPMI_real_intr ( 0x10 , & regs , & sregs );
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regs . x . eax &= 0xffff ;
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if ( regs . x . eax != 0x004F) {
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cout << "\nGraphic mode " << vesa_mode << " is not supported by this video card\n" ;
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DPMI_real_free ( ModeInfoSel ) ;
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DPMI_real_free ( VInfoSel ) ;
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return ;
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}
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cout << "\nMode attributes\n" ;
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temp = ( unsigned ) ModeInfo->Attributes ;
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if ( temp & 0x01 ) cout << "\tMode supported in hardware\n" ;
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else cout << "\tMode is not supported in hardware\n" ;
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if ( temp & 0x20 ) cout << "\tMode is not VGA Windowed memory compatible\n" ;
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else cout << "\tMode is VGA Windowed memory compatible\n" ;
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cout << "Window A attributes\n" ;
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temp = ( unsigned ) ModeInfo->WinA_Attributes; ;
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if ( temp & 0x02 ) cout << "\tWindow A is Readable\n" ;
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else cout << "\tWindow A is not Readable\n" ;
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if ( temp & 0x04 ) cout << "\tWindow A is Writeable\n" ;
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else cout << "\tWindow A is not Writeable\n" ;
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sprintf ( buff , "%P\n" , ModeInfo->WinA_Segment ) ;
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cout << "\tWindow A segment address 0x" << buff + 4 ;
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cout << "Window B attributes\n" ;
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temp = ( unsigned ) ModeInfo->WinB_Attributes; ;
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if ( temp & 0x02 ) cout << "\tWindow B is Readable\n" ;
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else cout << "\tWindow B is not Readable\n" ;
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if ( temp & 0x04 ) cout << "\tWindow B is Writeable\n" ;
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else cout << "\tWindow B is not Writeable\n" ;
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sprintf ( buff , "%P\n" , ModeInfo->WinB_Segment ) ;
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cout << "\tWindow B segment address 0x" << buff + 4 ;
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cout << "Window shared attributes\n" ;
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cout << "\tWindow Granularity (KB) :" << ModeInfo->WinGranularity << "\n" ;
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cout << "\tWindow Size (KB) : " << ModeInfo->WinSize << "\n";
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cout << "\tNumber of Banks : " << (long)ModeInfo->NumBanks << "\n";
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cout << "\tBytes per ScanLine : " << (long)ModeInfo->BytesPerScanline << "\n";
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cout << "\tXResolution : " << (long)ModeInfo->XRes << "\n";
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cout << "\tYResolution : " << (long)ModeInfo->YRes << "\n";
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cout << "\tX Char Size : " << (long)ModeInfo->XCharSize << "\n";
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cout << "\tY Char Size : " << (long)ModeInfo->YCharSize << "\n";
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cout << "\tMemory Model : " << (long)ModeInfo->MemoryModel << "\n";
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cout << "\tNumber of planes : " << (long)ModeInfo->NumPlanes << "\n" ;
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cout << "\tBits per pixels : " << (long)ModeInfo->BitsPerPixel << "\n" ;
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/*
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cout << "Bttributes: " << (long)ModeInfo.Bttributes << "\n"
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<< "Win B Bttributes: " << (long)ModeInfo.WinB_Bttributes << "\n"
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<< "Win B Bttributes: " << (long)ModeInfo.WinB_Bttributes << "\n"
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<< "Win Granularity " << (long)ModeInfo.WinGranularity << "\n"
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<< "Win Size: " << (long)ModeInfo.WinSize << "\n"
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<< "Win B Segment: " << hex << (unsigned short)ModeInfo.WinB_Segment << "\n"
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<< "Win B Segment: " << (unsigned short)ModeInfo.WinB_Segment << "\n"
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<< "Bytes per scan line: " << dec << (unsigned short)ModeInfo.BytesPerScanline << "\n"
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<< "X resolution: " << (long)ModeInfo.XRes << "\n"
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<< "Y resolution: " << (long)ModeInfo.YRes << "\n"
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<< "X Char Size: " << (long)ModeInfo.XCharSize << "\n"
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<< "Y Char Size: " << (long)ModeInfo.YCharSize << "\n"
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<< "Number of planes: " << (long)ModeInfo.NumPlanes << "\n"
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<< "Bits per pixels: " << (long)ModeInfo.BitsPerPixel << "\n"
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<< "Number of Banks: " << (long)ModeInfo.NumBanks << "\n"
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<< "Memory Model: " << (long)ModeInfo.MemoryModel << "\n"
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<< "Bank Size: " << (long)ModeInfo.BankSize << "\n";
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*/
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DPMI_real_free ( ModeInfoSel ) ;
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DPMI_real_free ( VInfoSel ) ;
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}
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