CWE-ou-minkata/Sources/Plasma/PubUtilLib/plDeviceSelector/plDeviceSelector.cpp

/*==LICENSE==*

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*==LICENSE==*/
#include "hsTypes.h"
#include "plDeviceSelector.h"
#include "hsStream.h"
#include "hsUtils.h"

#include <algorithm>

DeviceSelector::DeviceSelector() :
    fSelDevType(hsG3DDeviceSelector::kDevTypeUnknown),
    fSelDev(0),
    fSelMode(0),
    fDevDesc(0),
    fModeDesc(0),
    fPerformance(0),
    fFilterBPP(0),
    fFilterWidth(0),
    fFilterHeight(0),
    fWindowed(false)
{
    memset(fStr, 0x00, sizeof(fStr));
}

const char  *DeviceSelector::GetErrorString( void )
{
    return fSelector.GetErrorString();
}

hsBool DeviceSelector::Enumerate(HWND hWnd, hsBool expertMode )
{
    plDemoDebugFile::Enable( true );        /// ALWAYS enable (well, for now at least)

    if( !fSelector.Init() )
        return false;

    fSelector.Enumerate(hWnd);

    // 11.25.2000 mcn - Now we are tough if we're not in expert mode
    fSelector.RemoveUnusableDevModes( !expertMode );

    // Sort the modes
    hsTArray<hsG3DDeviceRecord> &recs = fSelector.GetDeviceRecords();
    for (Int32 i = 0; i < recs.Count(); i++)
    {
        hsTArray<hsG3DDeviceMode> &modes = recs[i].GetModes();
        std::sort(modes.FirstIter(), modes.StopIter());
    }

    IRefreshFilter();

    return true;
}

void    DeviceSelector::SetModeFilter( int bitDepth, int minWidth, int minHeight )
{
    fFilterBPP = bitDepth;
    fFilterWidth = minWidth;
    fFilterHeight = minHeight;

    IRefreshFilter();
}

void    DeviceSelector::IRefreshFilter( void )
{
    if (fSelDev >= fRecords.Count() )
        return;

    // Make sure to preserve fSelMode if possible
    const hsG3DDeviceMode *oldMode = nil;
    if( fSelMode < fFilteredModes.GetCount() && fFilteredModes[ fSelMode ]<fSelRec.GetModes().GetCount() )
        oldMode = fSelRec.GetMode( fFilteredModes[ fSelMode ] );

    fFilteredModes.Reset();

    int i;
    for( i = 0; i < fRecords[ fSelDev ].GetModes().Count(); i++ )
    {
        hsG3DDeviceMode* mode = fRecords[ fSelDev ].GetMode( i );

        // Filter out modes we don't want listed
        if( fFilterBPP != 0 && fFilterBPP != mode->GetColorDepth() )
            continue;

        if( mode->GetWidth() < fFilterWidth || mode->GetHeight() < fFilterHeight )
            continue;

        // Remove any non 4:3 modes
        bool goodAspectRatio = (mode->GetWidth() / 4 == mode->GetHeight() / 3) &&
                                (mode->GetWidth() % 4 == 0) &&
                                (mode->GetHeight() % 3 == 0);

        if (!goodAspectRatio && !(mode->GetWidth() == 1280 && mode->GetHeight() == 1024))
        {
            continue;
        }

        // Add the remaining to our filter index
        fFilteredModes.Append( i );
    }

    if( oldMode != nil )
    {
        fSelMode = IFindFiltered( GetModeNum( oldMode ) );
        if( fSelMode == -1 )
        {
            // Try w/o bpp
            fSelMode = IFindFiltered( IGetModeNumNoBPP( oldMode ) );
            if( fSelMode == -1 )
                fSelMode = 0;
        }
    }
    else
        fSelMode = 0;

}

int     DeviceSelector::IFindFiltered( int realIndex )
{
    int idx = fFilteredModes.Find( realIndex );
    if( idx == fFilteredModes.kMissingIndex )
        return -1;

    return idx;
}

hsBool DeviceSelector::CheckDeviceType(UInt32 type)
{
    hsTArray<hsG3DDeviceRecord>& records = fSelector.GetDeviceRecords();

    for (Int32 i = 0; i < records.Count(); i++)
    {
        if (type == records[i].GetG3DDeviceType())
            return true;
    }

    return false;
}

hsBool DeviceSelector::IsDirect3DAvailable()
{
    return CheckDeviceType(hsG3DDeviceSelector::kDevTypeDirect3D);
}

hsBool DeviceSelector::IsDirect3DTnLAvailable()
{
    return CheckDeviceType(hsG3DDeviceSelector::kDevTypeDirect3DTnL);
}

hsBool DeviceSelector::IsGlideAvailable()
{
    return CheckDeviceType(hsG3DDeviceSelector::kDevTypeGlide);
}

hsBool DeviceSelector::IsOpenGLAvailable()
{
    return CheckDeviceType(hsG3DDeviceSelector::kDevTypeOpenGL);
}

void DeviceSelector::SetDirect3D()
{
    SetDeviceType(hsG3DDeviceSelector::kDevTypeDirect3D);
}

void DeviceSelector::SetDirect3DTnL()
{
    SetDeviceType(hsG3DDeviceSelector::kDevTypeDirect3DTnL);
}

void DeviceSelector::SetGlide()
{
    SetDeviceType(hsG3DDeviceSelector::kDevTypeGlide);
}

void DeviceSelector::SetOpenGL()
{
    SetDeviceType(hsG3DDeviceSelector::kDevTypeOpenGL);
}

void DeviceSelector::SetDeviceType (UInt32 type)
{
    Int32 i;
    for(i = 0; i < fRecords.GetCount(); i++)
        fRecords[i].Clear();
    fRecords.Reset();

    hsTArray<hsG3DDeviceRecord>& records = fSelector.GetDeviceRecords();
    for (i = 0; i < records.Count(); i++)
    {
        if (records[i].GetG3DDeviceType() == type)
            fRecords.Push(records[i]);
    }

    fSelDevType = type;
    fSelDev  = 0;
    fDevDesc = 0;
    fModeDesc = 0;

    IRefreshFilter();
}

hsBool DeviceSelector::IsDirect3D()
{
    if (fSelDevType == hsG3DDeviceSelector::kDevTypeDirect3D)
        return true;
    else
        return false;
}

hsBool DeviceSelector::IsDirect3DTnL()
{
    return ( fSelDevType == hsG3DDeviceSelector::kDevTypeDirect3DTnL ) ? true : false;
}

hsBool DeviceSelector::IsGlide()
{
    if (fSelDevType == hsG3DDeviceSelector::kDevTypeGlide)
        return true;
    else
        return false;
}

hsBool DeviceSelector::IsOpenGL()
{
    if (fSelDevType == hsG3DDeviceSelector::kDevTypeOpenGL)
        return true;
    else
        return false;
}

hsBool DeviceSelector::SetDevice(UInt32 index)
{
    if (index < fRecords.Count())
    {
        fSelDev = index;
        fSelMode = 0;
        fSelRec = fRecords[index];
        fSelRec.SetMaxAnisotropicSamples(0);

        IRefreshFilter();
        return true;
    }

    return false;
}

hsBool DeviceSelector::SetMode(UInt32 index)
{
    if (fSelDev >= fRecords.Count())
        return false;

    if (index < fFilteredModes.GetCount())
    {
        fSelMode = index;
        return true;
    }

    return false;
}

char* DeviceSelector::GetDeviceDescription()
{
    if (fDevDesc == fRecords.Count())
    {
        fDevDesc = 0;
        return nil;
    }

    sprintf(fStr, "%s [%s]", fRecords[fDevDesc].GetDriverDesc(), fRecords[fDevDesc].GetDeviceDesc());
    fDevDesc++;
    return fStr;
}

char* DeviceSelector::GetModeDescription( void )
{
    if (fSelDev >= fRecords.Count() )
        return nil;

    if (fModeDesc == fFilteredModes.GetCount())
    {
        fModeDesc = 0;
        return nil;
    }

    hsG3DDeviceMode* mode = fRecords[fSelDev].GetMode( fFilteredModes[ fModeDesc ] );
    fModeDesc++;

    if( fFilterBPP != 0 )
        sprintf( fStr, "%ux%u", mode->GetWidth(), mode->GetHeight() );
    else
        sprintf(fStr, "%ux%u %u bit", mode->GetWidth(), mode->GetHeight(), mode->GetColorDepth());

    return fStr;
}

UInt32 DeviceSelector::GetNumModes()
{
    return fFilteredModes.GetCount();
}

void DeviceSelector::GetMode(UInt32 i, int& width, int& height, int& depth)
{
    if (i >= fFilteredModes.GetCount())
        return;

    hsG3DDeviceMode* mode = fRecords[fSelDev].GetMode(fFilteredModes[i]);

    width  = mode->GetWidth();
    height = mode->GetHeight();
    depth  = mode->GetColorDepth();
}

hsBool DeviceSelector::SetDefault()
{
    hsG3DDeviceModeRecord dmr;
    if (fSelector.GetDefault(&dmr))
    {
        SetDeviceType(dmr.GetDevice()->GetG3DDeviceType());
        fSelDev = GetDeviceNum(dmr.GetDevice());
        fSelMode = IFindFiltered( GetModeNum(dmr.GetMode()) );
        fSelRec = fRecords[fSelDev];
        fSelRec.SetMaxAnisotropicSamples( 0 );  // Also off unless explicitly requested

        // Set a default detail level based on the available memory
        if (hsMemorySpec() == kBlows)
            fPerformance = 25;
        else
            fPerformance = 100;

        IRefreshFilter();

        return true;
    }

    return false;
}

hsBool DeviceSelector::Save()
{
    hsUNIXStream stream;
    if (!stream.Open(DEV_MODE_DAT, "wb"))
        return false;

    hsG3DDeviceRecord selRec = fSelRec;
    hsG3DDeviceMode selMode = *(selRec.GetMode( fFilteredModes[ fSelMode ] ));
    selRec.ClearModes();

    selRec.Write(&stream);

    if (fWindowed)
        selMode.SetColorDepth(0);
    selMode.Write(&stream);

    stream.WriteSwap16(fPerformance);

    stream.Close();

    return true;
}

hsBool DeviceSelector::Load()
{
    hsUNIXStream stream;
    if (!stream.Open(DEV_MODE_DAT, "rb"))
        return false;

    hsG3DDeviceRecord   LoadRec;    // Device copy for reading/writing
    hsG3DDeviceMode     LoadMode;   // Modes copy for reading/writing

    LoadRec.Read(&stream);
    if (LoadRec.IsInvalid())
    {
        stream.Close();
        return false;
    }

    LoadMode.Read(&stream);

    fPerformance = stream.ReadSwap16();

    stream.Close();

    // If selected device is available use it, otherwise return false
    if ((LoadRec.GetG3DDeviceType() == hsG3DDeviceSelector::kDevTypeDirect3D) && IsDirect3DAvailable())
        SetDirect3D();
    else if ((LoadRec.GetG3DDeviceType() == hsG3DDeviceSelector::kDevTypeDirect3DTnL) && IsDirect3DTnLAvailable())
        SetDirect3DTnL();
    else if ((LoadRec.GetG3DDeviceType() == hsG3DDeviceSelector::kDevTypeGlide) && IsGlideAvailable())
        SetGlide();
    else
        return false;

    ////////////////////////////////////////////////////////////////////////////
    // Attempt to match the saved device and mode to the ones that are currently
    // available.
    ////////////////////////////////////////////////////////////////////////////
    int num = GetDeviceNum(&LoadRec);
    if (num == -1)
        return false;
    SetDevice(num);

    // Copy the flags
    fSelRec.SetCap(hsG3DDeviceSelector::kCapsCompressTextures,
        LoadRec.GetCap(hsG3DDeviceSelector::kCapsCompressTextures));
    fSelRec.SetAASetting( LoadRec.GetAASetting() );
    fSelRec.SetMaxAnisotropicSamples( LoadRec.GetMaxAnisotropicSamples() );

    if (LoadMode.GetColorDepth() == 0)
    {
        fWindowed = true;
        LoadMode.SetColorDepth(32);
    }
    num = GetModeNum(&LoadMode);
    if (num == -1)
        return false;

    SetMode(IFindFiltered(num));

    return true;
}

int DeviceSelector::GetDeviceNum(const hsG3DDeviceRecord *pLoadRec)
{
    hsTArray<hsG3DDeviceRecord>& records = fRecords;

    for (int i = 0; i < records.Count(); i++)
    {
        if (!strcmp(records[i].GetDriverDesc(), pLoadRec->GetDriverDesc()) &&
            !strcmp(records[i].GetDriverName(), pLoadRec->GetDriverName()) &&
            !strcmp(records[i].GetDriverVersion(), pLoadRec->GetDriverVersion()) &&
            !strcmp(records[i].GetDeviceDesc(), pLoadRec->GetDeviceDesc()))
            return i;
    }   

    return -1;
}

int     DeviceSelector::IGetModeNumNoBPP( const hsG3DDeviceMode *pLoadMode )
{
    hsTArray<hsG3DDeviceMode>& modes = fRecords[fSelDev].GetModes();

    for (int i = 0; i < modes.Count(); i++)
    {
        if ((modes[i].GetWidth()        == pLoadMode->GetWidth()) &&
            (modes[i].GetHeight()       == pLoadMode->GetHeight())
            )
        {
            if( fFilteredModes.Find( i ) != fFilteredModes.kMissingIndex )
            {
#ifndef M3DRELEASE
                if (pLoadMode->GetColorDepth() == 0)
                    fSelRec.GetMode( i )->SetColorDepth(0);
#endif
                return i;
            }
        }
    }

    return -1;
}

int DeviceSelector::GetModeNum(const hsG3DDeviceMode *pLoadMode)
{
    hsTArray<hsG3DDeviceMode>& modes = fRecords[fSelDev].GetModes();

    for (int i = 0; i < modes.Count(); i++)
    {
        if ((modes[i].GetWidth()        == pLoadMode->GetWidth()) &&
            (modes[i].GetHeight()       == pLoadMode->GetHeight()) &&
            (modes[i].GetColorDepth()   == pLoadMode->GetColorDepth()))
        {
            return i;
        }
    }

    return -1;
}

UInt8   DeviceSelector::CanAntiAlias()
{
    hsG3DDeviceMode *mode = fRecords[ fSelDev ].GetMode( fFilteredModes[ fSelMode ] );

    return mode->GetNumFSAATypes();
}

UInt8 DeviceSelector::IsAntiAliased()
{
    return fSelRec.GetAASetting();
}

void DeviceSelector::SetAntiAlias(UInt8 numSamples)
{
    fSelRec.SetAASetting( numSamples );
}

UInt8   DeviceSelector::CanAnisotropicFilter()
{
    UInt8   hi = fRecords[ fSelDev ].GetMaxAnisotropicSamples();
    if( hi > 1 )
        return hi;

    return 0;
}

UInt8   DeviceSelector::GetAnisotropicLevel()
{
    return fSelRec.GetMaxAnisotropicSamples();
}

void    DeviceSelector::SetAnisotropicLevel( UInt8 level )
{
    fSelRec.SetMaxAnisotropicSamples( level );
}

bool DeviceSelector::CanWindow ()
{
    return !fSelRec.GetCap(hsG3DDeviceSelector::kCapsNoWindow);
}

bool DeviceSelector::IsWindowed()
{
    return fWindowed;
}

void DeviceSelector::SetWindowed(bool state)
{
    fWindowed = state;
}

hsBool DeviceSelector::CanCompress ()
{
    return fRecords[fSelDev].GetCap(hsG3DDeviceSelector::kCapsCompressTextures);
}

hsBool DeviceSelector::IsCompressed()
{
    return fSelRec.GetCap(hsG3DDeviceSelector::kCapsCompressTextures);
}

void DeviceSelector::SetCompressed(hsBool state)
{
    fSelRec.SetCap(hsG3DDeviceSelector::kCapsCompressTextures, state);
}

bool DeviceSelector::GetCap(UInt32 cap)
{
    return fSelRec.GetCap(cap) != 0;
}