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vtkOSPRayRendererNode.cxx
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vtkOSPRayRendererNode.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOSPRayRendererNode.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#ifdef _WIN32
#define _USE_MATH_DEFINES
#endif
#include "vtkOSPRayRendererNode.h"
#include "vtkAbstractVolumeMapper.h"
#include "vtkBoundingBox.h"
#include "vtkCamera.h"
#include "vtkCollectionIterator.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationDoubleKey.h"
#include "vtkInformationDoubleVectorKey.h"
#include "vtkInformationIntegerKey.h"
#include "vtkInformationObjectBaseKey.h"
#include "vtkInformationStringKey.h"
#include "vtkLight.h"
#include "vtkMapper.h"
#include "vtkMath.h"
#include "vtkMatrix4x4.h"
#include "vtkObjectFactory.h"
#include "vtkOSPRayActorNode.h"
#include "vtkOSPRayCameraNode.h"
#include "vtkOSPRayLightNode.h"
#include "vtkOSPRayVolumeNode.h"
#include "vtkOSPRayMaterialLibrary.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkTexture.h"
#include "vtkTransform.h"
#include "vtkViewNodeCollection.h"
#include "vtkVolume.h"
#include "vtkVolumeCollection.h"
#include "vtkWeakPointer.h"
#include "ospray/version.h"
#include <algorithm>
#include <cmath>
#include <map>
namespace ospray {
namespace opengl {
//code borrowed from ospray::modules::opengl to facilitate updating
//and linking
//todo: use ospray's copy instead of this
inline osp::vec3f operator*(const osp::vec3f &a, const osp::vec3f &b)
{
return osp::vec3f{a.x*b.x, a.y*b.y, a.z*b.z};
}
inline osp::vec3f operator*(const osp::vec3f &a, float b)
{
return osp::vec3f{a.x*b, a.y*b, a.z*b};
}
inline osp::vec3f operator/(const osp::vec3f &a, float b)
{
return osp::vec3f{a.x/b, a.y/b, a.z/b};
}
inline osp::vec3f operator*(float b, const osp::vec3f &a)
{
return osp::vec3f{a.x*b, a.y*b, a.z*b};
}
inline osp::vec3f operator*=(osp::vec3f a, float b)
{
return osp::vec3f{a.x*b, a.y*b, a.z*b};
}
inline osp::vec3f operator-(const osp::vec3f& a, const osp::vec3f& b)
{
return osp::vec3f{a.x-b.x, a.y-b.y, a.z-b.z};
}
inline osp::vec3f operator+(const osp::vec3f& a, const osp::vec3f& b)
{
return osp::vec3f{a.x+b.x, a.y+b.y, a.z+b.z};
}
inline osp::vec3f cross(const osp::vec3f &a, const osp::vec3f &b)
{
return osp::vec3f{a.y*b.z-a.z*b.y,
a.z*b.x-a.x*b.z,
a.x*b.y-a.y*b.x};
}
inline float dot(const osp::vec3f &a, const osp::vec3f &b)
{
return a.x*b.x+a.y*b.y+a.z*b.z;
}
inline osp::vec3f normalize(const osp::vec3f &v)
{
return v/sqrtf(dot(v,v));
}
/*! \brief Compute and return OpenGL depth values from the depth component of the given
OSPRay framebuffer, using parameters of the current OpenGL context and assuming a
perspective projection.
This function automatically determines the parameters of the OpenGL perspective
projection and camera direction / up vectors. It assumes these values match those
provided to OSPRay (fovy, aspect, camera direction / up vectors). It then maps the
OSPRay depth buffer and transforms it to OpenGL depth values according to the OpenGL
perspective projection.
The OSPRay frame buffer object must have been constructed with the OSP_FB_DEPTH flag.
*/
OSPTexture2D getOSPDepthTextureFromOpenGLPerspective(const double &fovy,
const double &aspect,
const double &zNear,
const double &zFar,
const osp::vec3f &_cameraDir,
const osp::vec3f &_cameraUp,
const float *glDepthBuffer,
float *ospDepthBuffer,
const size_t &glDepthBufferWidth,
const size_t &glDepthBufferHeight)
{
osp::vec3f cameraDir = (osp::vec3f&)_cameraDir;
osp::vec3f cameraUp = (osp::vec3f&)_cameraUp;
// this should later be done in ISPC...
// transform OpenGL depth to linear depth
for (size_t i=0; i<glDepthBufferWidth*glDepthBufferHeight; i++)
{
const double z_n = 2.0 * glDepthBuffer[i] - 1.0;
ospDepthBuffer[i] = 2.0 * zNear * zFar / (zFar + zNear - z_n * (zFar - zNear));
if (vtkMath::IsNan(ospDepthBuffer[i]))
{
ospDepthBuffer[i] = FLT_MAX;
}
}
// transform from orthogonal Z depth to ray distance t
osp::vec3f dir_du = normalize(cross(cameraDir, cameraUp));
osp::vec3f dir_dv = normalize(cross(dir_du, cameraDir));
const float imagePlaneSizeY = 2.f * tanf(fovy/2.f * M_PI/180.f);
const float imagePlaneSizeX = imagePlaneSizeY * aspect;
dir_du *= imagePlaneSizeX;
dir_dv *= imagePlaneSizeY;
const osp::vec3f dir_00 = cameraDir - .5f * dir_du - .5f * dir_dv;
for (size_t j=0; j<glDepthBufferHeight; j++)
{
for (size_t i=0; i<glDepthBufferWidth; i++)
{
const osp::vec3f dir_ij = normalize(dir_00 +
float(i)/float(glDepthBufferWidth-1) * dir_du +
float(j)/float(glDepthBufferHeight-1) * dir_dv);
const float t = ospDepthBuffer[j*glDepthBufferWidth+i] / dot(cameraDir, dir_ij);
ospDepthBuffer[j*glDepthBufferWidth+i] = t;
}
}
// nearest texture filtering required for depth textures -- we don't want interpolation of depth values...
osp::vec2i texSize = {static_cast<int>(glDepthBufferWidth),
static_cast<int>(glDepthBufferHeight)};
OSPTexture2D depthTexture = ospNewTexture2D((osp::vec2i&)texSize,
OSP_TEXTURE_R32F, ospDepthBuffer,
OSP_TEXTURE_FILTER_NEAREST);
return depthTexture;
}
}
}
vtkInformationKeyMacro(vtkOSPRayRendererNode, SAMPLES_PER_PIXEL, Integer);
vtkInformationKeyMacro(vtkOSPRayRendererNode, MAX_FRAMES, Integer);
vtkInformationKeyMacro(vtkOSPRayRendererNode, AMBIENT_SAMPLES, Integer);
vtkInformationKeyMacro(vtkOSPRayRendererNode, COMPOSITE_ON_GL, Integer);
vtkInformationKeyMacro(vtkOSPRayRendererNode, RENDERER_TYPE, String);
vtkInformationKeyMacro(vtkOSPRayRendererNode, NORTH_POLE, DoubleVector);
vtkInformationKeyMacro(vtkOSPRayRendererNode, EAST_POLE, DoubleVector);
vtkInformationKeyMacro(vtkOSPRayRendererNode, MATERIAL_LIBRARY, ObjectBase);
vtkInformationKeyMacro(vtkOSPRayRendererNode, VIEW_TIME, Double);
vtkInformationKeyMacro(vtkOSPRayRendererNode, TIME_CACHE_SIZE, Integer);
class vtkOSPRayRendererNodeInternals
{
//todo: move the rest of the internal data here too
public:
vtkOSPRayRendererNodeInternals(vtkOSPRayRendererNode *_owner)
: Owner(_owner)
{
//grumble!
//vs2013 error C2536:...: cannot specify explicit initializer for arrays
this->lbgcolor1[0] = 0.;
this->lbgcolor1[1] = 0.;
this->lbgcolor1[2] = 0.;
this->lbgcolor2[0] = 0.;
this->lbgcolor2[1] = 0.;
this->lbgcolor2[2] = 0.;
this->lup[0] = 1.;
this->lup[1] = 0.;
this->lup[2] = 0.;
this->least[0] = 0.;
this->least[1] = 1.;
this->least[2] = 0.;
this->LastViewPort[0] = 0.;
this->LastViewPort[1] = 0.;
this->LastParallelScale = 0.0;
};
~vtkOSPRayRendererNodeInternals() {};
bool CanReuseBG()
{
bool retval = true;
vtkRenderer *ren = vtkRenderer::SafeDownCast(this->Owner->GetRenderable());
double *up = vtkOSPRayRendererNode::GetNorthPole(ren);
if (up)
{
if (this->lup[0] != up[0] ||
this->lup[1] != up[1] ||
this->lup[2] != up[2])
{
this->lup[0] = up[0];
this->lup[1] = up[1];
this->lup[2] = up[2];
retval = false;
}
}
double *east = vtkOSPRayRendererNode::GetEastPole(ren);
if (east)
{
if (this->least[0] != east[0] ||
this->least[1] != east[1] ||
this->least[2] != east[2])
{
this->least[0] = east[0];
this->least[1] = east[1];
this->least[2] = east[2];
retval = false;
}
}
bool usebgtexture = ren->GetTexturedBackground();
if (this->lusebgtexture != usebgtexture)
{
this->lusebgtexture = usebgtexture;
retval = false;
}
vtkTexture *bgtexture = ren->GetBackgroundTexture();
vtkMTimeType bgttime = 0;
if (bgtexture)
{
bgttime = bgtexture->GetMTime();
}
if (this->lbgtexture != bgtexture || bgttime > this->lbgttime)
{
this->lbgtexture = bgtexture;
this->lbgttime = bgttime;
retval = false;
}
bool usegradient = ren->GetGradientBackground();
if (this->lusegradient != usegradient)
{
this->lusegradient = usegradient;
retval = false;
}
double *nbgcolor1 = ren->GetBackground();
double *nbgcolor2 = ren->GetBackground2();
if (this->lbgcolor1[0] != nbgcolor1[0] ||
this->lbgcolor1[1] != nbgcolor1[1] ||
this->lbgcolor1[2] != nbgcolor1[2] ||
this->lbgcolor2[0] != nbgcolor2[0] ||
this->lbgcolor2[1] != nbgcolor2[1] ||
this->lbgcolor2[2] != nbgcolor2[2])
{
this->lbgcolor1[0] = nbgcolor1[0];
this->lbgcolor1[1] = nbgcolor1[1];
this->lbgcolor1[2] = nbgcolor1[2];
this->lbgcolor2[0] = nbgcolor2[0];
this->lbgcolor2[1] = nbgcolor2[1];
this->lbgcolor2[2] = nbgcolor2[2];
retval = false;
}
return retval;
}
bool SetupPathTraceBackground(OSPRenderer oRenderer)
{
vtkRenderer *ren = vtkRenderer::SafeDownCast
(this->Owner->GetRenderable());
if (this->Owner->GetRendererType(ren) != "pathtracer")
{
return true;
}
bool reuseable = this->CanReuseBG();
if (!reuseable)
{
double *bg1 = ren->GetBackground();
unsigned char *ochars;
int isize = 1;
int jsize = 1;
vtkTexture *text = ren->GetBackgroundTexture();
if (ren->GetTexturedBackground() && text)
{
vtkImageData *vColorTextureMap = text->GetInput();
//todo, fallback to gradient when either of above return nullptr
//otherwise can't load texture in PV when in OSP::PT mode
//todo: this code is duplicated from vtkOSPRayPolyDataMapperNode
jsize = vColorTextureMap->GetExtent()[1];
isize = vColorTextureMap->GetExtent()[3];
unsigned char *ichars =
(unsigned char *)vColorTextureMap->GetScalarPointer();
ochars = new unsigned char[(isize+1)*(jsize+1)*3];
unsigned char *oc = ochars;
int comps = vColorTextureMap->GetNumberOfScalarComponents();
for (int i = 0; i < isize+1; i++)
{
for (int j = 0; j < jsize+1; j++)
{
oc[0] = ichars[0];
oc[1] = ichars[1];
oc[2] = ichars[2];
oc+=3;
ichars+=comps;
}
}
isize++;
jsize++;
}
else if (ren->GetGradientBackground())
{
double *bg2 = ren->GetBackground2();
isize=256; //todo: configurable
jsize=2;
ochars = new unsigned char[isize*jsize*3];
unsigned char *oc = ochars;
for (int i = 0; i < isize; i++)
{
double frac = (double)i/(double)isize;
*(oc+0) = (bg1[0]*(1.0-frac) + bg2[0]*frac)*255;
*(oc+1) = (bg1[1]*(1.0-frac) + bg2[1]*frac)*255;
*(oc+2) = (bg1[2]*(1.0-frac) + bg2[2]*frac)*255;
*(oc+3) = (bg1[0]*(1.0-frac) + bg2[0]*frac)*255;
*(oc+4) = (bg1[1]*(1.0-frac) + bg2[1]*frac)*255;
*(oc+5) = (bg1[2]*(1.0-frac) + bg2[2]*frac)*255;
oc+=6;
}
}
else
{
ochars = new unsigned char[3];
ochars[0] = bg1[0]*255;
ochars[1] = bg1[1]*255;
ochars[2] = bg1[2]*255;
}
OSPTexture2D t2d = ospNewTexture2D
(
osp::vec2i{jsize,isize},
OSP_TEXTURE_RGB8,
ochars,
0);//OSP_TEXTURE_FILTER_NEAREST);
OSPLight ospLight = vtkOSPRayLightNode::NewLight(this->Owner,
oRenderer,
"hdri");
ospSetObject(ospLight, "map", ((OSPTexture2D)(t2d)));
double *up = vtkOSPRayRendererNode::GetNorthPole(ren);
if (up)
{
ospSet3f(ospLight, "up", (float)up[0],(float)up[1],(float)up[2]);
}
else
{
ospSet3f(ospLight, "up",1.0f, 0.0f, 0.0f); //todo: configurable
}
double *east = vtkOSPRayRendererNode::GetEastPole(ren);
if (east)
{
ospSet3f(ospLight, "dir", (float)east[0],(float)east[1],(float)east[2]);
}
else
{
ospSet3f(ospLight, "dir", 0.0f, 1.0f, 0.0f); //todo: configurable
}
ospCommit(t2d);
ospCommit(ospLight); //todo: make sure osp frees its side
delete[] ochars;
this->BGLight = ospLight;
}
this->Owner->AddLight(this->BGLight);
return reuseable;
}
std::map<vtkProp3D *, vtkAbstractMapper3D *> LastMapperFor;
vtkOSPRayRendererNode *Owner;
bool lusebgtexture = false;
vtkWeakPointer<vtkTexture> lbgtexture = nullptr;
vtkMTimeType lbgttime = 0;
bool lusegradient = false;
double lbgcolor1[3]; //not initializing here bc visstudio2013
double lbgcolor2[3];
double lup[3];
double least[3];
double LastViewPort[2];
double LastParallelScale;
OSPLight BGLight;
};
//============================================================================
vtkStandardNewMacro(vtkOSPRayRendererNode);
//----------------------------------------------------------------------------
vtkOSPRayRendererNode::vtkOSPRayRendererNode()
{
this->Buffer = nullptr;
this->ZBuffer = nullptr;
this->ODepthBuffer = nullptr;
this->OModel = nullptr;
this->ORenderer = nullptr;
this->NumActors = 0;
this->ComputeDepth = true;
this->OFrameBuffer = nullptr;
this->ImageX = this->ImageY = -1;
this->CompositeOnGL = false;
this->Accumulate = true;
this->AccumulateCount = 0;
this->AccumulateTime = 0;
this->AccumulateMatrix = vtkMatrix4x4::New();
this->Internal = new vtkOSPRayRendererNodeInternals(this);
}
//----------------------------------------------------------------------------
vtkOSPRayRendererNode::~vtkOSPRayRendererNode()
{
delete[] this->Buffer;
delete[] this->ZBuffer;
delete[] this->ODepthBuffer;
ospRelease((OSPModel)this->OModel);
ospRelease((OSPRenderer)this->ORenderer);
ospRelease(this->OFrameBuffer);
this->AccumulateMatrix->Delete();
delete this->Internal;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetSamplesPerPixel(int value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::SAMPLES_PER_PIXEL(), value);
}
//----------------------------------------------------------------------------
int vtkOSPRayRendererNode::GetSamplesPerPixel(vtkRenderer *renderer)
{
if (!renderer)
{
return 1;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::SAMPLES_PER_PIXEL()))
{
return (info->Get(vtkOSPRayRendererNode::SAMPLES_PER_PIXEL()));
}
return 1;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetMaterialLibrary(vtkOSPRayMaterialLibrary *value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::MATERIAL_LIBRARY(), value);
}
//----------------------------------------------------------------------------
vtkOSPRayMaterialLibrary *vtkOSPRayRendererNode::GetMaterialLibrary(vtkRenderer *renderer)
{
if (!renderer)
{
return nullptr;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::MATERIAL_LIBRARY()))
{
vtkObjectBase *obj = info->Get(vtkOSPRayRendererNode::MATERIAL_LIBRARY());
return (vtkOSPRayMaterialLibrary::SafeDownCast(obj));
}
return nullptr;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetMaxFrames(int value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::MAX_FRAMES(), value);
}
//----------------------------------------------------------------------------
int vtkOSPRayRendererNode::GetMaxFrames(vtkRenderer *renderer)
{
if (!renderer)
{
return 1;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::MAX_FRAMES()))
{
return (info->Get(vtkOSPRayRendererNode::MAX_FRAMES()));
}
return 1;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetRendererType(std::string name, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::RENDERER_TYPE(), name);
}
//----------------------------------------------------------------------------
std::string vtkOSPRayRendererNode::GetRendererType(vtkRenderer *renderer)
{
if (!renderer)
{
return std::string("scivis");
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::RENDERER_TYPE()))
{
return (info->Get(vtkOSPRayRendererNode::RENDERER_TYPE()));
}
return std::string("scivis");
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetAmbientSamples(int value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::AMBIENT_SAMPLES(), value);
}
//----------------------------------------------------------------------------
int vtkOSPRayRendererNode::GetAmbientSamples(vtkRenderer *renderer)
{
if (!renderer)
{
return 0;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::AMBIENT_SAMPLES()))
{
return (info->Get(vtkOSPRayRendererNode::AMBIENT_SAMPLES()));
}
return 0;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetCompositeOnGL(int value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::COMPOSITE_ON_GL(), value);
}
//----------------------------------------------------------------------------
int vtkOSPRayRendererNode::GetCompositeOnGL(vtkRenderer *renderer)
{
if (!renderer)
{
return 0;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::COMPOSITE_ON_GL()))
{
return (info->Get(vtkOSPRayRendererNode::COMPOSITE_ON_GL()));
}
return 0;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetNorthPole(double *value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::NORTH_POLE(), value, 3);
}
//----------------------------------------------------------------------------
double * vtkOSPRayRendererNode::GetNorthPole(vtkRenderer *renderer)
{
if (!renderer)
{
return nullptr;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::NORTH_POLE()))
{
return (info->Get(vtkOSPRayRendererNode::NORTH_POLE()));
}
return nullptr;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetEastPole(double *value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::EAST_POLE(), value, 3);
}
//----------------------------------------------------------------------------
double * vtkOSPRayRendererNode::GetEastPole(vtkRenderer *renderer)
{
if (!renderer)
{
return nullptr;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::EAST_POLE()))
{
return (info->Get(vtkOSPRayRendererNode::EAST_POLE()));
}
return nullptr;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetViewTime(double value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::VIEW_TIME(), value);
}
//----------------------------------------------------------------------------
double vtkOSPRayRendererNode::GetViewTime(vtkRenderer *renderer)
{
if (!renderer)
{
return 0;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::VIEW_TIME()))
{
return (info->Get(vtkOSPRayRendererNode::VIEW_TIME()));
}
return 0;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::SetTimeCacheSize(int value, vtkRenderer *renderer)
{
if (!renderer)
{
return;
}
vtkInformation *info = renderer->GetInformation();
info->Set(vtkOSPRayRendererNode::TIME_CACHE_SIZE(), value);
}
//----------------------------------------------------------------------------
int vtkOSPRayRendererNode::GetTimeCacheSize(vtkRenderer *renderer)
{
if (!renderer)
{
return 0;
}
vtkInformation *info = renderer->GetInformation();
if (info && info->Has(vtkOSPRayRendererNode::TIME_CACHE_SIZE()))
{
return (info->Get(vtkOSPRayRendererNode::TIME_CACHE_SIZE()));
}
return 0;
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::Traverse(int operation)
{
// do not override other passes
if (operation != render)
{
this->Superclass::Traverse(operation);
return;
}
this->Apply(operation,true);
OSPRenderer oRenderer = this->ORenderer;
//camera
//TODO: this repeated traversal to find things of particular types
//is bad, find something smarter
vtkViewNodeCollection *nodes = this->GetChildren();
vtkCollectionIterator *it = nodes->NewIterator();
it->InitTraversal();
while (!it->IsDoneWithTraversal())
{
vtkOSPRayCameraNode *child =
vtkOSPRayCameraNode::SafeDownCast(it->GetCurrentObject());
if (child)
{
child->Traverse(operation);
break;
}
it->GoToNextItem();
}
//lights
this->Lights.clear();
it->InitTraversal();
bool hasAmbient = false;
while (!it->IsDoneWithTraversal())
{
vtkOSPRayLightNode *child =
vtkOSPRayLightNode::SafeDownCast(it->GetCurrentObject());
if (child)
{
child->Traverse(operation);
if (child->GetIsAmbient(vtkLight::SafeDownCast(child->GetRenderable())))
{
hasAmbient = true;
}
}
it->GoToNextItem();
}
#if OSPRAY_VERSION_MAJOR > 1 || \
(OSPRAY_VERSION_MAJOR == 1 && OSPRAY_VERSION_MINOR >= 2)
if (!hasAmbient &&
(this->GetAmbientSamples(static_cast<vtkRenderer*>(this->Renderable)) > 0)
)
{
//hardcode an ambient light for AO since OSP 1.2 stopped doing so.
OSPLight ospAmbient = vtkOSPRayLightNode::NewLight(this,
oRenderer,
"AmbientLight");
ospSetString(ospAmbient, "name", "default_ambient");
ospSet3f(ospAmbient, "color", 1.f, 1.f, 1.f);
ospSet1f(ospAmbient, "intensity",
0.13f*vtkOSPRayLightNode::GetLightScale()*vtkMath::Pi());
ospCommit(ospAmbient);
this->Lights.push_back(ospAmbient);
}
#endif
bool bgreused = this->Internal->SetupPathTraceBackground(oRenderer);
OSPData lightArray = ospNewData(this->Lights.size(), OSP_OBJECT,
(this->Lights.size()?&this->Lights[0]:nullptr), 0);
ospSetData(oRenderer, "lights", lightArray);
//actors
OSPModel oModel=nullptr;
it->InitTraversal();
//since we have to spatially sort everything
//let's see if we can avoid that in the common case when
//the objects have not changed. Note we also cache in actornodes
//to reuse already created ospray meshes
vtkMTimeType recent = 0;
int numAct = 0; //catches removed actors
while (!it->IsDoneWithTraversal())
{
vtkOSPRayActorNode *child =
vtkOSPRayActorNode::SafeDownCast(it->GetCurrentObject());
vtkOSPRayVolumeNode *vchild =
vtkOSPRayVolumeNode::SafeDownCast(it->GetCurrentObject());
if (child)
{
numAct++;
recent = std::max(recent, child->GetMTime());
}
if (vchild)
{
numAct++;
recent = std::max(recent, vchild->GetMTime());
}
it->GoToNextItem();
}
bool enable_cache = true; //turn off to force rebuilds for debugging
if (!this->OModel ||
!enable_cache ||
(recent > this->RenderTime) ||
(numAct != this->NumActors))
{
this->NumActors = numAct;
ospRelease((OSPModel)this->OModel);
oModel = ospNewModel();
this->OModel = oModel;
it->InitTraversal();
while (!it->IsDoneWithTraversal())
{
vtkOSPRayActorNode *child =
vtkOSPRayActorNode::SafeDownCast(it->GetCurrentObject());
if (child)
{
child->Traverse(operation);
}
vtkOSPRayVolumeNode *vchild =
vtkOSPRayVolumeNode::SafeDownCast(it->GetCurrentObject());
if (vchild)
{
vchild->Traverse(operation);
}
it->GoToNextItem();
}
this->RenderTime = recent;
ospCommit(oModel);
ospSetObject(oRenderer,"model", oModel);
ospCommit(oRenderer);
}
else
{
oModel = (OSPModel)this->OModel;
ospSetObject(oRenderer,"model", oModel);
ospCommit(oRenderer);
}
it->Delete();
if (!bgreused)
{
//hack to ensure progressive rendering resets when background changes
this->AccumulateTime = 0;
}
this->Apply(operation,false);
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::Invalidate(bool prepass)
{
if (prepass)
{
this->RenderTime = 0;
}
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::Build(bool prepass)
{
if (prepass)
{
vtkRenderer *aren = vtkRenderer::SafeDownCast(this->Renderable);
// make sure we have a camera
if ( !aren->IsActiveCameraCreated() )
{
aren->ResetCamera();
}
}
this->Superclass::Build(prepass);
}
//----------------------------------------------------------------------------
void vtkOSPRayRendererNode::Render(bool prepass)
{
vtkRenderer *ren = vtkRenderer::SafeDownCast(this->GetRenderable());
if (!ren)
{
return;
}
if (prepass)
{
OSPRenderer oRenderer = nullptr;
static std::string previousType;
std::string type = this->GetRendererType(static_cast<vtkRenderer*>(this->Renderable));
if (!this->ORenderer || previousType != type)
{
this->Traverse(invalidate);
ospRelease(this->ORenderer);
oRenderer = ospNewRenderer(type.c_str());
this->ORenderer = oRenderer;
previousType = type;
}
else
{
oRenderer = this->ORenderer;
}
ospSet1f(this->ORenderer, "maxContribution", 2.f);
ospSet1f(this->ORenderer, "minContribution", 0.01f);
ospSet1f(this->ORenderer, "varianceThreshold", 0.3f);
ospCommit(this->ORenderer);
int viewportOrigin[2];
int viewportSize[2];
ren->GetTiledSizeAndOrigin(
&viewportSize[0], &viewportSize[1], &viewportOrigin[0], &viewportOrigin[1]);
this->Size[0] = viewportSize[0];
this->Size[1] = viewportSize[1];
if (ren->GetUseShadows())
{
ospSet1i(oRenderer,"shadowsEnabled",1);
}
else
{
ospSet1i(oRenderer,"shadowsEnabled",0);
}
//todo: this can be expensive and should be cached
//also the user might want to control
vtkBoundingBox bbox(ren->ComputeVisiblePropBounds());
if (bbox.IsValid())
{
float diam = static_cast<float>(bbox.GetDiagonalLength());
float logDiam = log(diam);
if (logDiam < 0.f)
{
logDiam = 1.f/(fabs(logDiam));
}
float epsilon = 1e-5*logDiam;
ospSet1f(oRenderer, "epsilon", epsilon);
ospSet1f(oRenderer, "aoDistance", diam*0.3);
}
vtkVolumeCollection *vc = ren->GetVolumes();
if (vc->GetNumberOfItems())
{
ospSet1i(oRenderer, "aoTransparencyEnabled", 1);
}
ospSet1i(oRenderer,"aoSamples",
this->GetAmbientSamples(static_cast<vtkRenderer*>(this->Renderable)));
ospSet1i(oRenderer,"spp",
this->GetSamplesPerPixel(static_cast<vtkRenderer*>(this->Renderable)));
this->CompositeOnGL =
(this->GetCompositeOnGL(static_cast<vtkRenderer*>(this->Renderable))!=0);
double *bg = ren->GetBackground();
#if OSPRAY_VERSION_MAJOR > 1 || \
(OSPRAY_VERSION_MAJOR == 1 && OSPRAY_VERSION_MINOR >= 3)
ospSet4f(oRenderer,"bgColor", bg[0], bg[1], bg[2], ren->GetBackgroundAlpha());
#else
ospSet3f(oRenderer,"bgColor", bg[0], bg[1], bg[2]);
#endif
}
else
{
OSPRenderer oRenderer = this->ORenderer;
ospCommit(oRenderer);
osp::vec2i isize = {this->Size[0], this->Size[1]};
if (this->ImageX != this->Size[0] || this->ImageY != this->Size[1])
{
this->ImageX = this->Size[0];
this->ImageY = this->Size[1];
ospRelease(this->OFrameBuffer);
this->OFrameBuffer = ospNewFrameBuffer
(isize,
OSP_FB_RGBA8,
OSP_FB_COLOR | (this->ComputeDepth? OSP_FB_DEPTH : 0) | (this->Accumulate? OSP_FB_ACCUM : 0));
ospSet1f(this->OFrameBuffer, "gamma", 1.0f);
ospCommit(this->OFrameBuffer);