CqLightsource::CqLightsource( const boost::shared_ptr<IqShader>& pShader, bool fActive ) :
m_pShader( pShader ),
m_pAttributes(),
m_pTransform(),
m_pShaderExecEnv(IqShaderExecEnv::create(QGetRenderContextI()))
{
// Set a reference with the current attributes.
m_pAttributes = QGetRenderContext() ->pattrCurrent();
m_pShader->SetType(Type_Lightsource);
m_pTransform = QGetRenderContext() ->ptransCurrent();
}
void CqImageBuffer::RenderImage()
{
////////// Create a new dump file //////////
#if ENABLE_MPDUMP
const TqInt* poptDump = QGetRenderContext() ->poptCurrent()->GetIntegerOption( "mpdump", "enabled" );
if(poptDump && (*poptDump != 0))
{
m_mpdump.open();
m_mpdump.dumpImageInfo();
}
#endif
/////////////////////////////////////////////
STATS_SETF( MPG_min_area, FLT_MAX );
STATS_SETF( MPG_max_area, FLT_MIN );
if ( bucketmodulo == -1 )
{
// Small change which allows full control of virtual memory on NT swapping
bucketmodulo = m_cXBuckets;
TqInt *poptModulo = ( TqInt * ) QGetRenderContext() ->poptCurrent()->GetIntegerOption( "limits", "bucketmodulo" );
if ( poptModulo != 0 )
{
bucketmodulo = poptModulo[ 0 ];
}
if ( bucketmodulo <= 0 )
bucketmodulo = m_cXBuckets;
}
// Render the surface at the front of the list.
RtProgressFunc pProgressHandler = NULL;
pProgressHandler = QGetRenderContext()->pProgressHandler();
const CqString* pstrBucketOrder = QGetRenderContext() ->poptCurrent()->GetStringOption( "render", "bucketorder" );
enum EqBucketOrder order = Bucket_Horizontal;
if ( NULL != pstrBucketOrder )
{
if( !pstrBucketOrder[ 0 ].compare( "vertical" ) )
order = Bucket_Vertical;
else if ( !pstrBucketOrder[ 0 ].compare( "horizontal" ) )
order = Bucket_Horizontal;
else {
Aqsis::log() << warning << "Not supported \"" << pstrBucketOrder[ 0 ] << "\" " << std::endl;
}
#ifdef NOTREADY
else if ( !pstrBucketOrder[ 0 ].compare( "zigzag" ) )
order = Bucket_ZigZag;
else if ( !pstrBucketOrder[ 0 ].compare( "circle" ) )
order = Bucket_Circle;
else if ( !pstrBucketOrder[ 0 ].compare( "random" ) )
order = Bucket_Random;
#endif
}
void CqTransform::SetCurrentTransform( TqFloat time, const CqMatrix& matTrans )
{
TqFloat det = matTrans.Determinant();
bool flip = ( !matTrans.fIdentity() && det < 0 );
SqTransformation ct;
ct.m_matTransform = matTrans;
ct.m_Handedness = !flip;
if ( QGetRenderContext() ->pconCurrent() ->fMotionBlock() )
{
AddTimeSlot( time, ct );
m_IsMoving = true;
}
else
{
if( m_IsMoving )
{
AddTimeSlot( time, ct );
}
else
{
m_StaticMatrix = matTrans;
m_Handedness = (flip)? !m_Handedness : m_Handedness;
//m_Handedness = flip;
ct.m_Handedness = flip;
SetDefaultObject( ct );
}
}
}
void CqTransform::ConcatCurrentTransform( TqFloat time, const CqMatrix& matTrans )
{
TqFloat det = matTrans.Determinant();
bool flip = ( !matTrans.fIdentity() && det < 0 );
SqTransformation ct;
ct.m_matTransform = matTrans;
ct.m_Handedness = (flip)? !m_Handedness : m_Handedness;
// If we are actually in a motion block, and we already describe a moving transform,
// concatenate this transform with the existing one at that time slot,
// ConcatTimeSlot will take care of making sure that the matrix is initially set to the
// static matrix, as long as we ensure that the default is kept up to date.
if ( QGetRenderContext() ->pconCurrent() ->fMotionBlock() )
{
ConcatTimeSlot( time, ct );
m_IsMoving = true;
}
else
// else, if we are moving, apply this transform at all time slots, otherwise apply to static matrix.
{
if( m_IsMoving )
ConcatAllTimeSlots( ct );
else
{
m_StaticMatrix = m_StaticMatrix * matTrans;
m_Handedness = (flip)? !m_Handedness : m_Handedness;
ct.m_Handedness = m_Handedness;
SetDefaultObject( ct );
}
}
}
void CqTransform::SetTransform( TqFloat time, const CqMatrix& matTrans )
{
TqFloat det = matTrans.Determinant();
bool flip = ( !matTrans.fIdentity() && det < 0 );
CqMatrix matCtoW;
QGetRenderContext()->matSpaceToSpace("world", "camera", NULL, NULL, QGetRenderContext()->Time(), matCtoW);
TqFloat camdet = matCtoW.Determinant();
bool camhand = ( !matCtoW.fIdentity() && camdet < 0 );
if ( QGetRenderContext() ->pconCurrent() ->fMotionBlock() )
{
SqTransformation ct;
ct.m_Handedness = (flip)? !camhand : camhand;
ct.m_matTransform = matTrans;
AddTimeSlot( time, ct );
m_IsMoving = true;
}
else
{
// If not in a motion block, but we are moving, apply the transform to all keys.
if( m_IsMoving )
{
CqMatrix mat0 = matObjectToWorld(Time(0));
SqTransformation ct;
ct.m_Handedness = (flip)? !camhand : camhand;
bool hand0 = ct.m_Handedness;
ct.m_matTransform = matTrans;
AddTimeSlot( Time(0), ct );
TqInt i;
for(i=1; i<cTimes(); i++)
{
CqMatrix matOffset = mat0 * matObjectToWorld(Time(i)).Inverse();
ct.m_matTransform = matOffset * matTrans;
bool flip2 = ( matOffset.Determinant() < 0 );
ct.m_Handedness = (flip2)? !hand0 : hand0;
AddTimeSlot( Time(i), ct);
}
}
else
{
m_StaticMatrix = matTrans;
m_Handedness = (flip)? !camhand : camhand;
}
}
}
IqTextureMapOld* CqTextureMapOld::GetLatLongMap( const CqString& strName )
{
QGetRenderContext() ->Stats().IncTextureMisses( 2 );
TqUlong hash = CqString::hash(strName.c_str());
// First search the texture map cache
for ( std::vector<CqTextureMapOld*>::iterator i = m_TextureMap_Cache.begin(); i != m_TextureMap_Cache.end(); i++ )
{
if ( ( *i ) ->m_hash == hash )
{
if ( ( *i ) ->Type() == MapType_LatLong )
{
QGetRenderContext() ->Stats().IncTextureHits( 1, 2 );
return ( *i );
} else
{
return NULL;
}
}
}
QGetRenderContext() ->Stats().IncTextureHits( 0, 2 );
// If we got here, it doesn't exist yet, so we must create and load it.
CqTextureMapOld* pNew = new CqLatLongMapOld( strName );
m_TextureMap_Cache.push_back( pNew );
pNew->Open();
TqPchar ptexfmt;
// Invalid only if this is not a LatLong Env. map file
if ( pNew->m_pImage == 0 ||
TIFFGetField( pNew->m_pImage, TIFFTAG_PIXAR_TEXTUREFORMAT, &ptexfmt ) != 1 ||
strcmp( ptexfmt, LATLONG_HEADER ) != 0 )
{
static bool done = false;
if (!done)
{
Aqsis::log() << error << "Map \"" << strName.c_str() << "\" is not an environment map, use RiMakeLatLongEnvironment" << std::endl;
done = true;
}
pNew->SetInvalid();
}
return ( pNew );
}
CqImagersource::CqImagersource( const boost::shared_ptr<IqShader>& pShader, bool fActive ) :
m_pShader( pShader ),
m_pAttributes(),
m_pShaderExecEnv(IqShaderExecEnv::create(QGetRenderContextI()))
{
m_pAttributes = QGetRenderContext()->pattrCurrent();
m_pShader->SetType(Type_Imager);
}
/** Delete the object context.
* \attention This is the only valid context deletion from within this block.
*/
void CqMotionModeBlock::EndMotionModeBlock()
{
if( m_pDeformingSurface )
{
QGetRenderContext()->StorePrimitive( m_pDeformingSurface );
STATS_INC( GPR_created );
}
}
// Dump global information about the image
void CqMPDump::dumpImageInfo()
{
short id = 3;
if (m_outFile==NULL)
{
Aqsis::log() << error << "Attempted to write to unopened mpdump file." << std::endl;
return;
}
int width = QGetRenderContext() ->poptCurrent()->GetIntegerOption( "System", "Resolution" ) [ 0 ];
int height = QGetRenderContext() ->poptCurrent()->GetIntegerOption( "System", "Resolution" ) [ 1 ];
size_t len_written = fwrite((void*)&id, sizeof(short), 1, m_outFile);
len_written += fwrite((void*)&width, sizeof(int), 1, m_outFile);
len_written += fwrite((void*)&height, sizeof(int), 1, m_outFile);
if(len_written != 3)
AQSIS_THROW_XQERROR(XqInvalidFile, EqE_System,
"Error writing mpdump file");
}
/** Initialise the default object.
*/
void CqTransform::InitialiseDefaultObject( const CqTransformPtr& From )
{
// Get the state of the transformation at the last stack entry, and use this as the default value for new timeslots.
// if the previous level has motion specification, the value will be interpolated.
TqFloat time = QGetRenderContext()->Time();
CqMatrix matOtoWLast = From->matObjectToWorld( time );
bool handLast = From->GetHandedness( time );
SqTransformation ct;
ct.m_Handedness = handLast;
ct.m_matTransform = matOtoWLast;
SetDefaultObject( ct );
}
/**
* Returns the approximate "length" of an edge of a grid in raster space.
*
* @return Approximate grid length.
*/
TqFloat CqCurve::GetGridLength() const
{
// we want to find the number of micropolygons per grid - the default
// is 256 (16x16 micropolygon grid).
TqFloat micropolysPerGrid = 256;
const TqInt* poptGridSize =
QGetRenderContext() ->poptCurrent()->GetIntegerOption(
"limits", "gridsize"
);
if ( poptGridSize != NULL )
micropolysPerGrid = poptGridSize[0];
// Assuming the grid is square, the side length of the grid in raster space
// is the following.
// TODO: this assumption may be pretty bad for RiCurves!
return sqrt(micropolysPerGrid * AdjustedShadingRate());
}
/** Initialise the environment for the specified grid size.
* \param iGridRes Integer grid resolution.
* \param iGridRes Integer grid resolution.
*/
void CqLightsource::Initialise( TqInt uGridRes, TqInt vGridRes, TqInt microPolygonCount, TqInt shadingPointCount, bool hasValidDerivatives )
{
TqInt Uses = gDefLightUses;
if ( m_pShader )
{
Uses |= m_pShader->Uses();
m_pShaderExecEnv->Initialise( uGridRes, vGridRes, microPolygonCount, shadingPointCount, hasValidDerivatives, m_pAttributes, boost::shared_ptr<IqTransform>(), m_pShader.get(), Uses );
}
if ( m_pShader )
m_pShader->Initialise( uGridRes, vGridRes, shadingPointCount, m_pShaderExecEnv.get() );
if ( USES( Uses, EnvVars_L ) )
L() ->Initialise( shadingPointCount );
if ( USES( Uses, EnvVars_Cl ) )
Cl() ->Initialise( shadingPointCount );
// Initialise the geometric parameters in the shader exec env.
if ( USES( Uses, EnvVars_P ) )
{
CqMatrix mat;
QGetRenderContext() ->matSpaceToSpace( "shader", "current", m_pShader->getTransform(), NULL, QGetRenderContextI()->Time(), mat );
P() ->SetPoint( mat * CqVector3D( 0.0f, 0.0f, 0.0f ) );
}
if ( USES( Uses, EnvVars_u ) )
u() ->SetFloat( 0.0f );
if ( USES( Uses, EnvVars_v ) )
v() ->SetFloat( 0.0f );
if ( USES( Uses, EnvVars_du ) )
du() ->SetFloat( 0.0f );
if ( USES( Uses, EnvVars_dv ) )
dv() ->SetFloat( 0.0f );
if ( USES( Uses, EnvVars_s ) )
s() ->SetFloat( 0.0f );
if ( USES( Uses, EnvVars_t ) )
t() ->SetFloat( 0.0f );
if ( USES( Uses, EnvVars_N ) )
N() ->SetNormal( CqVector3D( 0.0f, 0.0f, 0.0f ) );
}
//---------------------------------------------------------------------
void CqImagersource::Initialise( const CqRegion& DRegion, IqChannelBuffer* buffer )
{
AQSIS_TIME_SCOPE(Imager_shading);
// We use one less than the bucket width and height here, since these
// resolutions really represent one less than the number of shaded points
// in each direction. (Usually they describe the number of micropolygons
// on a grid which is one less than the number of shaded vertices. This
// concept has no real analogue in context of an imager shader.)
TqInt uGridRes = DRegion.width()-1;
TqInt vGridRes = DRegion.height()-1;
TqInt x = DRegion.xMin();
TqInt y = DRegion.yMin();
m_uYOrigin = static_cast<TqInt>( y );
m_uXOrigin = static_cast<TqInt>( x );
m_uGridRes = uGridRes;
m_vGridRes = vGridRes;
TqInt mode = QGetRenderContext() ->poptCurrent()->GetIntegerOption( "System", "DisplayMode" ) [ 0 ];
TqFloat components;
TqInt j, i;
TqFloat shuttertime = QGetRenderContext() ->poptCurrent()->GetFloatOption( "System", "Shutter" ) [ 0 ];
components = mode & DMode_RGB ? 3 : 0;
components += mode & DMode_A ? 1 : 0;
components = mode & DMode_Z ? 1 : components;
TqInt Uses = ( 1 << EnvVars_P ) | ( 1 << EnvVars_Ci ) | ( 1 << EnvVars_Oi | ( 1 << EnvVars_ncomps ) | ( 1 << EnvVars_time ) | ( 1 << EnvVars_alpha ) | ( 1 << EnvVars_s ) | ( 1 << EnvVars_t ) );
m_pShaderExecEnv->Initialise( uGridRes, vGridRes, uGridRes * vGridRes, (uGridRes+1)*(vGridRes+1), true, IqAttributesPtr(), IqTransformPtr(), m_pShader.get(), Uses );
// Initialise the geometric parameters in the shader exec env.
TqInt numShadingPoints = (uGridRes+1) * (vGridRes+1);
P() ->Initialise( numShadingPoints );
Ci() ->Initialise( numShadingPoints );
Oi() ->Initialise( numShadingPoints );
alpha() ->Initialise( numShadingPoints );
s() ->Initialise( numShadingPoints );
t() ->Initialise( numShadingPoints );
//TODO dtime is not initialised yet
//dtime().Initialise(uGridRes, vGridRes, i);
ncomps() ->SetFloat( components );
time() ->SetFloat( shuttertime );
m_pShader->Initialise( uGridRes, vGridRes, (uGridRes+1)*(vGridRes+1), m_pShaderExecEnv.get() );
TqUint CiIndex = buffer->getChannelIndex("Ci");
TqUint OiIndex = buffer->getChannelIndex("Oi");
TqUint coverageIndex = buffer->getChannelIndex("coverage");
for ( j = 0; j < vGridRes+1; j++ )
{
for ( i = 0; i < uGridRes+1; i++ )
{
TqInt off = j * ( uGridRes + 1 ) + i;
P() ->SetPoint( CqVector3D( x + i, y + j, 0.0 ), off );
Ci() ->SetColor( CqColor((*buffer)(i, j, CiIndex)[0], (*buffer)(i, j, CiIndex)[1], (*buffer)(i, j, CiIndex)[2]), off );
CqColor opa((*buffer)(i, j, OiIndex)[0], (*buffer)(i, j, OiIndex)[1], (*buffer)(i, j, OiIndex)[2]);
Oi() ->SetColor( opa, off );
TqFloat avopa = ( opa.r() + opa.g() + opa.b() ) /3.0f;
alpha() ->SetFloat( (*buffer)(i, j, coverageIndex)[0] * avopa, off );
s() ->SetFloat( x + i + 0.5, off );
t() ->SetFloat( y + j + 0.5, off );
}
}
// Execute the Shader VM
if ( m_pShader )
{
m_pShader->Evaluate( m_pShaderExecEnv.get() );
alpha() ->SetFloat( 1.0f ); /* by default 3delight/bmrt set it to 1.0 */
}
}
IqTextureMapOld* CqTextureMapOld::GetEnvironmentMap( const CqString& strName )
{
QGetRenderContext() ->Stats().IncTextureMisses( 1 );
TqUlong hash = CqString::hash(strName.c_str());
// First search the texture map cache
for ( std::vector<CqTextureMapOld*>::iterator i = m_TextureMap_Cache.begin(); i != m_TextureMap_Cache.end(); i++ )
{
if ( ( *i ) ->m_hash == hash )
{
if ( ( *i ) ->Type() == MapType_Environment )
{
QGetRenderContext() ->Stats().IncTextureHits( 1, 1 );
return ( *i );
} else
{
return NULL;
}
}
}
QGetRenderContext() ->Stats().IncTextureHits( 0, 1 );
// If we got here, it doesn't exist yet, so we must create and load it.
CqTextureMapOld* pNew = new CqEnvironmentMapOld( strName );
m_TextureMap_Cache.push_back( pNew );
pNew->Open();
TqPchar ptexfmt = 0;
// Invalid if the m_pImage is not there or it is not cube or latlong env. map file
if ( pNew->m_pImage == 0 ||
TIFFGetField( pNew->m_pImage, TIFFTAG_PIXAR_TEXTUREFORMAT, &ptexfmt ) != 1 ||
( strcmp( ptexfmt, CUBEENVMAP_HEADER ) != 0 ) && ( strcmp( ptexfmt, LATLONG_HEADER ) != 0 ) )
{
static bool done = false;
if (!done)
{
Aqsis::log() << error << "Map \"" << strName.c_str() << "\" is not an environment map, use RiMakeCubeFaceEnvironment" << std::endl;
done = true;
}
pNew->SetInvalid();
delete pNew;
pNew = NULL;
}
else
{
TqFloat fov;
if (TIFFGetField( pNew->m_pImage, TIFFTAG_PIXAR_FOVCOT, &fov) == 1)
((CqEnvironmentMapOld *)pNew)->SetFov(fov);
else
((CqEnvironmentMapOld *)pNew)->SetFov(1.0);
}
// remove from the list a LatLong env. map since in shadeops.cpp we will cope with it.
if ( ptexfmt && strcmp( ptexfmt, LATLONG_HEADER ) == 0 )
{
pNew->SetInvalid();
delete pNew;
pNew = NULL;
}
return ( pNew );
}
void CqImageBuffer::PostSurface( const boost::shared_ptr<CqSurface>& pSurface )
{
AQSIS_TIME_SCOPE(Post_surface);
// Count the number of total gprims
STATS_INC( GPR_created_total );
// Bound the primitive in its current space (camera) space taking into account any motion specification.
CqBound Bound;
pSurface->Bound(&Bound);
// Take into account the displacement bound extension.
TqFloat db = 0.0f;
CqString strCoordinateSystem( "object" );
const TqFloat* pattrDispclacementBound = pSurface->pAttributes() ->GetFloatAttribute( "displacementbound", "sphere" );
const CqString* pattrCoordinateSystem = pSurface->pAttributes() ->GetStringAttribute( "displacementbound", "coordinatesystem" );
if ( pattrDispclacementBound != 0 )
db = pattrDispclacementBound[ 0 ];
if ( pattrCoordinateSystem != 0 )
strCoordinateSystem = pattrCoordinateSystem[ 0 ];
if ( db != 0.0f )
{
CqVector3D vecDB( db, 0, 0 );
const IqTransform* transShaderToWorld = NULL;
// Default "shader" space to the displacement shader, unless there isn't one, in which
// case use the surface shader.
if ( pSurface->pAttributes() ->pshadDisplacement(QGetRenderContextI()->Time()) )
transShaderToWorld = pSurface->pAttributes() ->pshadDisplacement(QGetRenderContextI()->Time()) ->getTransform();
else if ( pSurface->pAttributes() ->pshadSurface(QGetRenderContextI()->Time()) )
transShaderToWorld = pSurface->pAttributes() ->pshadSurface(QGetRenderContextI()->Time()) ->getTransform();
CqMatrix mat;
QGetRenderContext() ->matVSpaceToSpace( strCoordinateSystem.c_str(), "camera", transShaderToWorld, pSurface->pTransform().get(), QGetRenderContextI()->Time(), mat );
vecDB = mat * vecDB;
db = vecDB.Magnitude();
Bound.vecMax() += db;
Bound.vecMin() -= db;
}
// Check if the surface can be culled. (also adjusts for DOF and converts Bound to raster space).
if ( CullSurface( Bound, pSurface ) )
{
STATS_INC( GPR_culled );
return ;
}
// If the primitive has been marked as undiceable by the eyeplane check, then we cannot get a valid
// bucket index from it as the projection of the bound would cross the camera plane and therefore give a false
// result, so just put it back in the current bucket for further splitting.
TqInt XMinb = 0;
TqInt YMinb = 0;
TqInt XMaxb = 0;
TqInt YMaxb = 0;
if (! pSurface->IsUndiceable() )
{
XMinb = static_cast<TqInt>( Bound.vecMin().x() ) / m_optCache.xBucketSize;
YMinb = static_cast<TqInt>( Bound.vecMin().y() ) / m_optCache.yBucketSize;
XMaxb = static_cast<TqInt>( Bound.vecMax().x() ) / m_optCache.xBucketSize;
YMaxb = static_cast<TqInt>( Bound.vecMax().y() ) / m_optCache.yBucketSize;
}
XMinb = clamp( XMinb, m_bucketRegion.xMin(), m_bucketRegion.xMax()-1 );
YMinb = clamp( YMinb, m_bucketRegion.yMin(), m_bucketRegion.yMax()-1 );
XMaxb = clamp( XMaxb, m_bucketRegion.xMin(), m_bucketRegion.xMax()-1 );
YMaxb = clamp( YMaxb, m_bucketRegion.yMin(), m_bucketRegion.yMax()-1 );
// Sanity check we are not putting into a bucket that has already been processed.
CqBucket* bucket = &Bucket( XMinb, YMinb );
if ( bucket->IsProcessed() )
{
// Scan over the buckets that the bound touches, looking for the first one that isn't processed.
TqInt yb = YMinb;
TqInt xb = XMinb + 1;
bool done = false;
while(!done && yb <= YMaxb)
{
while(!done && xb <= XMaxb)
{
CqBucket& availBucket = Bucket(xb, yb);
if(!availBucket.IsProcessed())
{
availBucket.AddGPrim(pSurface);
done = true;
}
++xb;
}
xb = XMinb;
++yb;
}
}
else
{
bucket->AddGPrim( pSurface );
}
}
void CqImageBuffer::AddMPG( boost::shared_ptr<CqMicroPolygon>& pmpgNew )
{
CqRenderer* renderContext = QGetRenderContext();
CqBound B = pmpgNew->GetBound();
// Expand the micropolygon bound for DoF if necessary.
if(renderContext->UsingDepthOfField())
{
// Get the maximum CoC multiplier for the micropolygon depth.
const CqVector2D maxCoC = max(
renderContext->GetCircleOfConfusion(B.vecMin().z()),
renderContext->GetCircleOfConfusion(B.vecMax().z())
);
// Expand the bound by the CoC radius
B.vecMin() -= vectorCast<CqVector3D>(maxCoC);
B.vecMax() += vectorCast<CqVector3D>(maxCoC);
}
// Discard when outside the crop window.
if ( B.vecMax().x() < renderContext->cropWindowXMin() - m_optCache.xFiltSize / 2.0f ||
B.vecMax().y() < renderContext->cropWindowYMin() - m_optCache.yFiltSize / 2.0f ||
B.vecMin().x() > renderContext->cropWindowXMax() + m_optCache.xFiltSize / 2.0f ||
B.vecMin().y() > renderContext->cropWindowYMax() + m_optCache.yFiltSize / 2.0f )
{
return;
}
////////// Dump the micro polygon into a dump file //////////
#if ENABLE_MPDUMP
if(m_mpdump.IsOpen())
m_mpdump.dump(*pmpgNew);
#endif
/////////////////////////////////////////////////////////////
// Find out the minimum bucket touched by the micropoly bound.
B.vecMin().x( B.vecMin().x() - (lfloor(m_optCache.xFiltSize / 2.0f)) );
B.vecMin().y( B.vecMin().y() - (lfloor(m_optCache.yFiltSize / 2.0f)) );
B.vecMax().x( B.vecMax().x() + (lfloor(m_optCache.xFiltSize / 2.0f)) );
B.vecMax().y( B.vecMax().y() + (lfloor(m_optCache.yFiltSize / 2.0f)) );
TqInt iXBa = static_cast<TqInt>( B.vecMin().x() / m_optCache.xBucketSize );
TqInt iYBa = static_cast<TqInt>( B.vecMin().y() / m_optCache.yBucketSize );
TqInt iXBb = static_cast<TqInt>( B.vecMax().x() / m_optCache.xBucketSize );
TqInt iYBb = static_cast<TqInt>( B.vecMax().y() / m_optCache.yBucketSize );
if ( ( iXBb < m_bucketRegion.xMin() ) || ( iYBb < m_bucketRegion.yMin() ) ||
( iXBa >= m_bucketRegion.xMax() ) || ( iYBa >= m_bucketRegion.yMax() ) )
{
return ;
}
// Use sane values -- otherwise sometimes crashes, probably
// due to precision problems
if ( iXBa < m_bucketRegion.xMin() ) iXBa = m_bucketRegion.xMin();
if ( iYBa < m_bucketRegion.yMin() ) iYBa = m_bucketRegion.yMin();
if ( iXBb >= m_bucketRegion.xMax() ) iXBb = m_bucketRegion.xMax() - 1;
if ( iYBb >= m_bucketRegion.yMax() ) iYBb = m_bucketRegion.yMax() - 1;
// Add the MP to all the Buckets that it touches
for ( TqInt i = iXBa; i <= iXBb; i++ )
{
for ( TqInt j = iYBa; j <= iYBb; j++ )
{
CqBucket* bucket = &Bucket( i, j );
// Only add the MPG if the bucket isn't processed.
// \note It is possible for this to happen validly, if a primitive is occlusion culled in a
// previous bucket, and not in a subsequent one. When it gets processed in the later bucket
// the MPGs can leak into the previous one, shouldn't be a problem, as the occlusion culling
// means the MPGs shouldn't be rendered in that bucket anyway.
if ( !bucket->IsProcessed() )
{
bucket->AddMP( pmpgNew );
}
}
}
}
bool CqCurve::Diceable()
{
// OK, here the CqCubicCurveSegment line has two options:
// 1. split into two more lines
// 2. turn into a bilinear patch for rendering
// We don't want to go turning into a patch unless absolutely
// necessary, since patches cost more. We only want to become a patch
// if the current curve is "best handled" as a patch. For now, I'm
// choosing to define that the curve is best handled as a patch under
// one or more of the following two conditions:
// 1. If the maximum width is a significant fraction of the length of
// the line (width greater than 0.75 x length; ignoring normals).
// 2. If the length of the line (ignoring the width; cos' it's
// covered by point 1) is such that it's likely a bilinear
// patch would be diced immediately if we created one (so that
// patches don't have to get split!).
// 3. If the curve crosses the eye plane (m_fDiceable == false).
// find the length of the CqLinearCurveSegment line in raster space
if( m_splitDecision == Split_Undecided )
{
// AGG - 31/07/04
// well, if we follow the above statagy we end up splitting into
// far too many grids (with roughly 1 mpg per grid). so after
// profiling a few scenes, the fastest method seems to be just
// to convert to a patch immediatly.
// we really need a native dice for curves but until that time
// i reckon this is best.
//m_splitDecision = Split_Patch;
CqMatrix matCtoR;
QGetRenderContext() ->matSpaceToSpace(
"camera", "raster",
NULL, NULL,
QGetRenderContextI()->Time(),
matCtoR
);
// control hull
CqVector2D hull[2] = {
vectorCast<CqVector2D>(matCtoR * P()->pValue(0)[0]),
vectorCast<CqVector2D>(matCtoR * P()->pValue(1)[0])
};
CqVector2D lengthVector = hull[ 1 ] - hull[ 0 ];
TqFloat lengthraster = lengthVector.Magnitude();
// find the approximate "length" of a diced patch in raster space
TqFloat gridlength = GetGridLength();
// decide whether to split into more curve segments or a patch
if(( lengthraster < gridlength ) || ( !m_fDiceable ))
{
// split into a patch
m_splitDecision = Split_Patch;
}
else
{
// split into smaller curves
m_splitDecision = Split_Curve;
}
}
return false;
}
bool CqImageBuffer::CullSurface( CqBound& Bound, const boost::shared_ptr<CqSurface>& pSurface )
{
// If the primitive is completely outside of the hither-yon z range, cull it.
if ( Bound.vecMin().z() >= m_optCache.clipFar ||
Bound.vecMax().z() <= m_optCache.clipNear )
return true;
// This needs to be re-enabled when the RiClippingPlane code is wired up.
#if 0
if(QGetRenderContext()->clippingVolume().whereIs(Bound) == CqBound::Side_Outside)
{
return(true);
}
#endif
// If the primitive spans the epsilon plane and the hither plane and can be split,
if ( Bound.vecMin().z() <= FLT_EPSILON )
{
// Mark the primitive as not dicable.
pSurface->ForceUndiceable();
CqString objname( "unnamed" );
const CqString* pattrName = pSurface->pAttributes() ->GetStringAttribute( "identifier", "name" );
if ( pattrName != 0 )
objname = pattrName[ 0 ];
Aqsis::log() << info << "Object \"" << objname.c_str() << "\" spans the epsilon plane" << std::endl;
if ( pSurface->SplitCount() > m_optCache.maxEyeSplits )
{
Aqsis::log() << warning << "Max eyesplits for object \"" << objname.c_str() << "\" exceeded" << std::endl;
return( true );
}
return ( false );
}
TqFloat minz = Bound.vecMin().z();
TqFloat maxz = Bound.vecMax().z();
// Convert the bounds to raster space.
CqMatrix mat;
QGetRenderContext() ->matSpaceToSpace( "camera", "raster", NULL, NULL, QGetRenderContext()->Time(), mat );
Bound.Transform( mat );
// Take into account depth-of-field
if ( QGetRenderContext() ->UsingDepthOfField() )
{
const CqVector2D minZCoc = QGetRenderContext()->GetCircleOfConfusion( minz );
const CqVector2D maxZCoc = QGetRenderContext()->GetCircleOfConfusion( maxz );
TqFloat cocX = max( minZCoc.x(), maxZCoc.x() );
TqFloat cocY = max( minZCoc.y(), maxZCoc.y() );
Bound.vecMin().x( Bound.vecMin().x() - cocX );
Bound.vecMin().y( Bound.vecMin().y() - cocY );
Bound.vecMax().x( Bound.vecMax().x() + cocX );
Bound.vecMax().y( Bound.vecMax().y() + cocY );
}
// And expand to account for filter size.
Bound.vecMin().x( Bound.vecMin().x() - m_optCache.xFiltSize / 2.0f );
Bound.vecMin().y( Bound.vecMin().y() - m_optCache.yFiltSize / 2.0f );
Bound.vecMax().x( Bound.vecMax().x() + m_optCache.xFiltSize / 2.0f );
Bound.vecMax().y( Bound.vecMax().y() + m_optCache.yFiltSize / 2.0f );
// If the bounds are completely outside the viewing frustum, cull the primitive.
if( Bound.vecMin().x() > QGetRenderContext()->cropWindowXMax() ||
Bound.vecMin().y() > QGetRenderContext()->cropWindowYMax() ||
Bound.vecMax().x() < QGetRenderContext()->cropWindowXMin() ||
Bound.vecMax().y() < QGetRenderContext()->cropWindowYMin() )
return ( true );
// Restore Z-Values to camera space.
Bound.vecMin().z( minz );
Bound.vecMax().z( maxz );
// Cache the Bound.
pSurface->CacheRasterBound( Bound );
return ( false );
}