// Setup a CCoreDispInfo given a mapdispinfo_t.
// If pFace is non-NULL, then lightmap texture coordinates will be generated.
void DispMapToCoreDispInfo(
mapdispinfo_t *pMapDisp,
CCoreDispInfo *pCoreDispInfo,
dface_t *pFace )
{
winding_t *pWinding = pMapDisp->face.originalface->winding;
Assert( pWinding->numpoints == 4 );
//
// set initial surface data
//
CCoreDispSurface *pSurf = pCoreDispInfo->GetSurface();
texinfo_t *pTexInfo = &texinfo[ pMapDisp->face.texinfo ];
// init material contents
pMapDisp->contents = textureref[pTexInfo->texdata].contents;
if (!(pMapDisp->contents & (ALL_VISIBLE_CONTENTS | CONTENTS_PLAYERCLIP|CONTENTS_MONSTERCLIP) ) )
{
pMapDisp->contents |= CONTENTS_SOLID;
}
pSurf->SetContents( pMapDisp->contents );
// Calculate the lightmap coordinates.
Vector2D lmCoords[4] = {Vector2D(0,0),Vector2D(0,1),Vector2D(1,0),Vector2D(1,1)};
Vector2D tCoords[4] = {Vector2D(0,0),Vector2D(0,1),Vector2D(1,0),Vector2D(1,1)};
if( pFace )
{
Assert( pFace->numedges == 4 );
Vector pt[4];
for( int i=0; i < 4; i++ )
pt[i] = pWinding->p[i];
CalcTextureCoordsAtPoints(
pTexInfo->lightmapVecsLuxelsPerWorldUnits,
pFace->m_LightmapTextureMinsInLuxels,
pt,
4,
lmCoords );
int zeroOffset[2] = {0,0};
CalcTextureCoordsAtPoints(
pTexInfo->textureVecsTexelsPerWorldUnits,
zeroOffset,
pt,
4,
tCoords );
}
//
// set face point data ...
//
pSurf->SetPointCount( 4 );
for( int i = 0; i < 4; i++ )
{
// position
pSurf->SetPoint( i, pWinding->p[i] );
for( int j = 0; j < ( NUM_BUMP_VECTS + 1 ); ++j )
{
pSurf->SetLuxelCoord( j, i, lmCoords[i] );
}
pSurf->SetTexCoord( i, tCoords[i] );
}
//
// reset surface given start info
//
pSurf->SetPointStart( pMapDisp->startPosition );
pSurf->FindSurfPointStartIndex();
pSurf->AdjustSurfPointData();
//
// adjust face lightmap data - this will be done a bit more accurately
// when the common code get written, for now it works!!! (GDC, E3)
//
Vector points[4];
for( int ndxPt = 0; ndxPt < 4; ndxPt++ )
{
points[ndxPt] = pSurf->GetPoint( ndxPt );
}
Vector edgeU = points[3] - points[0];
Vector edgeV = points[1] - points[0];
bool bUMajor = ( edgeU.Length() > edgeV.Length() );
if( pFace )
{
int lightmapWidth = pFace->m_LightmapTextureSizeInLuxels[0];
int lightmapHeight = pFace->m_LightmapTextureSizeInLuxels[1];
if ( ( bUMajor && ( lightmapHeight > lightmapWidth ) ) ||
( !bUMajor && ( lightmapWidth > lightmapHeight ) ) )
{
pFace->m_LightmapTextureSizeInLuxels[0] = lightmapHeight;
pFace->m_LightmapTextureSizeInLuxels[1] = lightmapWidth;
lightmapWidth = lightmapHeight;
lightmapHeight = pFace->m_LightmapTextureSizeInLuxels[1];
}
for ( int ndxBump = 0; ndxBump < ( NUM_BUMP_VECTS + 1 ); ndxBump++ )
{
pSurf->SetLuxelCoord( ndxBump, 0, Vector2D( 0.0f, 0.0f ) );
pSurf->SetLuxelCoord( ndxBump, 1, Vector2D( 0.0f, ( float )lightmapHeight ) );
pSurf->SetLuxelCoord( ndxBump, 2, Vector2D( ( float )lightmapWidth, ( float )lightmapHeight ) );
pSurf->SetLuxelCoord( ndxBump, 3, Vector2D( ( float )lightmapWidth, 0.0f ) );
}
}
// Setup the displacement vectors and offsets.
int size = ( ( ( 1 << pMapDisp->power ) + 1 ) * ( ( 1 << pMapDisp->power ) + 1 ) );
Vector vectorDisps[2048];
float dispDists[2048];
Assert( size < sizeof(vectorDisps)/sizeof(vectorDisps[0]) );
for( int j = 0; j < size; j++ )
{
Vector v;
float dist;
VectorScale( pMapDisp->vectorDisps[j], pMapDisp->dispDists[j], v );
VectorAdd( v, pMapDisp->vectorOffsets[j], v );
dist = VectorLength( v );
VectorNormalize( v );
vectorDisps[j] = v;
dispDists[j] = dist;
}
// Use CCoreDispInfo to setup the actual vertex positions.
pCoreDispInfo->InitDispInfo( pMapDisp->power, pMapDisp->minTess, pMapDisp->smoothingAngle,
pMapDisp->alphaValues, vectorDisps, dispDists );
pCoreDispInfo->Create();
}
// Setup a CCoreDispInfo given a mapdispinfo_t.
// If pFace is non-NULL, then lightmap texture coordinates will be generated.
void DispMapToCoreDispInfo( mapdispinfo_t *pMapDisp, CCoreDispInfo *pCoreDispInfo, dface_t *pFace, int *pSwappedTexInfos )
{
winding_t *pWinding = pMapDisp->face.originalface->winding;
Assert( pWinding->numpoints == 4 );
//
// set initial surface data
//
CCoreDispSurface *pSurf = pCoreDispInfo->GetSurface();
texinfo_t *pTexInfo = &texinfo[ pMapDisp->face.texinfo ];
Assert( pTexInfo != NULL );
// init material contents
pMapDisp->contents = pMapDisp->face.contents;
if (!(pMapDisp->contents & (ALL_VISIBLE_CONTENTS | CONTENTS_PLAYERCLIP|CONTENTS_MONSTERCLIP) ) )
{
pMapDisp->contents |= CONTENTS_SOLID;
}
pSurf->SetContents( pMapDisp->contents );
// Calculate the lightmap coordinates.
Vector2D tCoords[4] = {Vector2D(0,0),Vector2D(0,1),Vector2D(1,0),Vector2D(1,1)};
if( pFace )
{
Assert( pFace->numedges == 4 );
Vector pt[4];
for( int i=0; i < 4; i++ )
pt[i] = pWinding->p[i];
int zeroOffset[2] = {0,0};
CalcTextureCoordsAtPoints(
pTexInfo->textureVecsTexelsPerWorldUnits,
zeroOffset,
pt,
4,
tCoords );
}
//
// set face point data ...
//
pSurf->SetPointCount( 4 );
for( int i = 0; i < 4; i++ )
{
// position
pSurf->SetPoint( i, pWinding->p[i] );
pSurf->SetTexCoord( i, tCoords[i] );
}
// reset surface given start info
pSurf->SetPointStart( pMapDisp->startPosition );
pSurf->FindSurfPointStartIndex();
pSurf->AdjustSurfPointData();
// Set the luxel coordinates on the base displacement surface.
Vector vecTmp( pTexInfo->lightmapVecsLuxelsPerWorldUnits[0][0],
pTexInfo->lightmapVecsLuxelsPerWorldUnits[0][1],
pTexInfo->lightmapVecsLuxelsPerWorldUnits[0][2] );
int nLuxelsPerWorldUnit = static_cast<int>( 1.0f / VectorLength( vecTmp ) );
Vector vecU( pTexInfo->lightmapVecsLuxelsPerWorldUnits[0][0],
pTexInfo->lightmapVecsLuxelsPerWorldUnits[0][1],
pTexInfo->lightmapVecsLuxelsPerWorldUnits[0][2] );
Vector vecV( pTexInfo->lightmapVecsLuxelsPerWorldUnits[1][0],
pTexInfo->lightmapVecsLuxelsPerWorldUnits[1][1],
pTexInfo->lightmapVecsLuxelsPerWorldUnits[1][2] );
bool bSwap = pSurf->CalcLuxelCoords( nLuxelsPerWorldUnit, false, vecU, vecV );
// Set the face m_LightmapExtents
if ( pFace )
{
pFace->m_LightmapTextureSizeInLuxels[0] = pSurf->GetLuxelU();
pFace->m_LightmapTextureSizeInLuxels[1] = pSurf->GetLuxelV();
if ( bSwap )
{
if ( pSwappedTexInfos[ pMapDisp->face.texinfo ] < 0 )
{
// Create a new texinfo to hold the swapped data.
// We must do this because other surfaces may want the non-swapped data
// This fixes a lighting bug in d2_prison_08 where many non-displacement surfaces
// were pitch black, in addition to bugs in other maps I bet.
// NOTE: Copy here because adding a texinfo could realloc.
texinfo_t temp = *pTexInfo;
memcpy( temp.lightmapVecsLuxelsPerWorldUnits[0], pTexInfo->lightmapVecsLuxelsPerWorldUnits[1], 4 * sizeof(float) );
memcpy( temp.lightmapVecsLuxelsPerWorldUnits[1], pTexInfo->lightmapVecsLuxelsPerWorldUnits[0], 4 * sizeof(float) );
temp.lightmapVecsLuxelsPerWorldUnits[1][0] *= -1.0f;
temp.lightmapVecsLuxelsPerWorldUnits[1][1] *= -1.0f;
temp.lightmapVecsLuxelsPerWorldUnits[1][2] *= -1.0f;
temp.lightmapVecsLuxelsPerWorldUnits[1][3] *= -1.0f;
pSwappedTexInfos[ pMapDisp->face.texinfo ] = texinfo.AddToTail( temp );
}
pMapDisp->face.texinfo = pSwappedTexInfos[ pMapDisp->face.texinfo ];
}
// NOTE: This is here to help future-proof code, since there are codepaths where
// pTexInfo can be made invalid (texinfo.AddToTail above).
pTexInfo = NULL;
}
// Setup the displacement vectors and offsets.
int size = ( ( ( 1 << pMapDisp->power ) + 1 ) * ( ( 1 << pMapDisp->power ) + 1 ) );
Vector vectorDisps[2048];
float dispDists[2048];
Assert( size < sizeof(vectorDisps)/sizeof(vectorDisps[0]) );
for( int j = 0; j < size; j++ )
{
Vector v;
float dist;
VectorScale( pMapDisp->vectorDisps[j], pMapDisp->dispDists[j], v );
VectorAdd( v, pMapDisp->vectorOffsets[j], v );
dist = VectorLength( v );
VectorNormalize( v );
vectorDisps[j] = v;
dispDists[j] = dist;
}
// Use CCoreDispInfo to setup the actual vertex positions.
pCoreDispInfo->InitDispInfo( pMapDisp->power, pMapDisp->minTess, pMapDisp->smoothingAngle,
pMapDisp->alphaValues, vectorDisps, dispDists );
pCoreDispInfo->Create();
}
