void OpenGLShaderPointLight::copyLight(PointLight &light)
{
setParamValue("position", light.getPosition());
setParamValue("ambient", light.getAmbient());
setParamValue("diffuse", light.getDiffuse());
setParamValue("specular", light.getSpecular());
setParamValue("attenuation", light.getAttenuation());
setParamValue("cutoff", light.getCutoff());
bind();
}
/*! Sets the \a lightChunk fields based on light.
\dev
DeferredShadingStage can not use the light's own chunk, because
it computes the light position based on DrawEnv::getCameraViewing(),
which is just the ortho camera for rendering the full screen quads, not
the perspective camera used during the gbuffer pass.
\enddev
*/
void DeferredShadingStage::updateLightChunk(
DSLightChunk *lightChunk, Light *light)
{
lightChunk->setBeacon (light->getBeacon ());
lightChunk->setAmbient (light->getAmbient ());
lightChunk->setDiffuse (light->getDiffuse ());
lightChunk->setSpecular(light->getSpecular());
if(light->getType() == DirectionalLight::getClassType())
{
DirectionalLight *dirL = static_cast<DirectionalLight *>(light);
Vec4f dir(dirL->getDirection());
dir[3] = 0.f;
lightChunk->setPosition(dir);
}
else if(light->getType() == PointLight::getClassType())
{
PointLight *pointL = static_cast<PointLight *>(light);
Vec4f pos(pointL->getPosition());
pos[3] = 1.f;
lightChunk->setPosition (pos );
lightChunk->setConstantAttenuation (pointL->getConstantAttenuation ());
lightChunk->setLinearAttenuation (pointL->getLinearAttenuation ());
lightChunk->setQuadraticAttenuation(pointL->getQuadraticAttenuation());
lightChunk->setCutoff (180.f );
}
else if(light->getType() == SpotLight::getClassType())
{
SpotLight *spotL = static_cast<SpotLight *>(light);
Vec4f pos(spotL->getPosition());
pos[3] = 1.f;
lightChunk->setPosition (pos );
lightChunk->setConstantAttenuation (spotL->getConstantAttenuation ());
lightChunk->setLinearAttenuation (spotL->getLinearAttenuation ());
lightChunk->setQuadraticAttenuation(spotL->getQuadraticAttenuation());
lightChunk->setDirection (spotL->getDirection ());
lightChunk->setExponent (spotL->getSpotExponent ());
lightChunk->setCutoff (
osgRad2Degree(spotL->getSpotCutOff()));
}
else
{
SWARNING << "DeferredShadingStage::updateLightChunk: "
<< "Unknown light type." << endLog;
}
}
void VarianceShadowMapHandler::createShadowMapsFBO(RenderAction *a,
DrawEnv *pEnv)
{
UInt32 mSize = _pStage->getMapSize();
if(mSize > 2048)
mSize = 2048;
//------Setting up Window to fit size of ShadowMap----------------
// disable all lights more speed
std::vector<bool> vLocalLightStates;
const ShadowStageData::LightStore &vLights =
_pStageData->getLights();
const ShadowStageData::LStateStore &vLightStates =
_pStageData->getLightStates();
const ShadowStageData::CamStore &vLCams =
_pStageData->getLightCameras();
const ShadowStageData::StatusStore &vExclActive =
_pStageData->getExcludeNodeActive();
for(UInt32 i = 0;i < vLights.size();++i)
{
// store old states.
vLocalLightStates.push_back(vLights[i].second->getOn());
vLights[i].second->setOn(false);
}
// activate exclude nodes:
for(UInt32 i = 0;i < _pStage->getMFExcludeNodes()->size();++i)
{
Node *exnode = _pStage->getExcludeNodes(i);
if(exnode != NULL)
{
if(vExclActive[i])
{
exnode->setTravMask(0);
}
}
}
UInt32 uiActiveLightCount = 0;
ShadowStageData::ShadowMapStore &vShadowMaps = _pStageData->getShadowMaps();
for(UInt32 i = 0;i < vLights.size();++i)
{
if(vLightStates[i] != 0)
{
if(_pStage->getGlobalShadowIntensity() != 0.0 ||
vLights[i].second->getShadowIntensity() != 0.0)
{
GLenum *buffers = NULL;
buffers = new GLenum[1];
buffers[0] = GL_COLOR_ATTACHMENT0_EXT;
Pnt3f lPos;
bool isDirLight;
Real32 sceneDiagLength;
if(vLights[i].second->getType() == PointLight::getClassType())
{
PointLight *tmpPoint;
tmpPoint =
dynamic_cast<PointLight *>(vLights[i].second.get());
lPos = tmpPoint->getPosition();
if(tmpPoint->getBeacon() != NULL)
{
Matrix m = tmpPoint->getBeacon()->getToWorld();
m.mult(lPos, lPos);
}
isDirLight = false;
Pnt3f center;
_pStageData->getLightRoot(i)->getVolume().getCenter(center);
Vec3f dir = lPos - center;
Real32 dirLength = dir.length();
Vec3f diff =
(_pStageData->getLightRoot(i)->getVolume().getMax() -
center);
Real32 diffLength = diff.length();
sceneDiagLength = dirLength + diffLength;
}
else if(vLights[i].second->getType() ==
SpotLight::getClassType())
{
SpotLight *tmpSpot;
tmpSpot =
dynamic_cast<SpotLight *>(vLights[i].second.get());
lPos = tmpSpot->getPosition();
if(tmpSpot->getBeacon() != NULL)
{
Matrix m = tmpSpot->getBeacon()->getToWorld();
m.mult(lPos, lPos);
}
isDirLight = false;
Pnt3f center;
_pStageData->getLightRoot(i)->getVolume().getCenter(center);
Vec3f dir = lPos - center;
Real32 dirLength = dir.length();
Vec3f diff =
(_pStageData->getLightRoot(i)->getVolume().getMax() -
center);
Real32 diffLength = diff.length();
sceneDiagLength = dirLength + diffLength;
}
else
{
isDirLight = true;
sceneDiagLength = 1.0;
}
if(_vDepthCmat.size() == uiActiveLightCount)
{
_vDepthCmat.push_back(ChunkMaterial::createLocal());
}
OSG_ASSERT(uiActiveLightCount < _vDepthCmat.size());
if(_vDepthSHLVar.size() == uiActiveLightCount)
{
_vDepthSHLVar.push_back(
SimpleSHLVariableChunk::createLocal());
#ifndef OSG_NEW_SHADER
_vDepthSHLVar[uiActiveLightCount]->setSHLChunk(_depthSHL);
#endif
}
OSG_ASSERT(uiActiveLightCount < _vDepthSHLVar.size());
_vDepthSHLVar[uiActiveLightCount]->addUniformVariable(
"sceneDiagLength",
Real32(sceneDiagLength));
_vDepthSHLVar[uiActiveLightCount]->addUniformVariable(
"isDirLight", bool(isDirLight));
_vDepthCmat[uiActiveLightCount]->clearChunks();
_vDepthCmat[uiActiveLightCount]->addChunk(_depthSHL);
_vDepthCmat[uiActiveLightCount]->addChunk(
_vDepthSHLVar[uiActiveLightCount]);
commitChanges();
_pStage->pushPartition(a);
{
RenderPartition *pPart = a->getActivePartition();
pPart->addPreRenderCallback(
&ShadowTreeHandler::setupAmbientModel);
pPart->addPostRenderCallback(
&ShadowTreeHandler::endAmbientModel);
pPart->setRenderTarget(vShadowMaps[i].pFBO);
pPart->setDrawBuffer (*buffers );
pPart->setWindow (a->getWindow());
pPart->calcViewportDimension(0.f,
0.f,
mSize - 1,
mSize - 1,
mSize,
mSize);
RenderFunctor f =
boost::bind(&VarianceShadowMapHandler::genMipMapCB,
this,
_1,
i);
pPart->addPreRenderCallback(f);
Matrix m, t;
// set the projection
vLCams[i]->getProjection(
m,
pPart->getViewportWidth (),
pPart->getViewportHeight());
vLCams[i]->getProjectionTranslation(
t,
pPart->getViewportWidth (),
pPart->getViewportHeight());
pPart->setupProjection(m, t);
vLCams[i]->getViewing(
m,
pPart->getViewportWidth (),
pPart->getViewportHeight());
pPart->setupViewing(m);
pPart->setNear (vLCams[i]->getNear());
pPart->setFar (vLCams[i]->getFar ());
pPart->calcFrustum();
pPart->setBackground(_pClearSMapBack);
Node *light = vLights[i].first;
Node *parent = light->getParent();
if(parent != NULL)
{
a->pushMatrix(parent->getToWorld());
}
a->overrideMaterial(_vDepthCmat[uiActiveLightCount],
a->getActNode());
_pStage->recurse(a, light);
a->overrideMaterial( NULL,
a->getActNode());
if(parent != NULL)
{
a->popMatrix();
}
}
_pStage->popPartition(a);
++uiActiveLightCount;
}
}
}
//-------Restoring old states of Window and Viewport----------
// enable all lights.
for(UInt32 i = 0;i < vLights.size();++i)
{
// restore old states.
vLights[i].second->setOn(vLocalLightStates[i]);
}
// activate exclude nodes:
for(UInt32 i = 0;i < _pStage->getMFExcludeNodes()->size();++i)
{
Node *exnode = _pStage->getExcludeNodes(i);
if(exnode != NULL)
{
if(vExclActive[i])
{
exnode->setTravMask(TypeTraits<UInt32>::BitsSet);
}
}
}
}
void VarianceShadowMapHandler::createShadowFactorMapFBO(
RenderAction *a,
DrawEnv *pEnv,
UInt32 num,
UInt32 uiActiveLightCount)
{
glClearColor(0.0, 0.0, 0.0, 1.0);
//Finde alle aktiven Lichtquellen
Real32 activeLights = 0;
const ShadowStageData::LightStore &vLights =
_pStageData->getLights();
const ShadowStageData::LStateStore &vLightStates =
_pStageData->getLightStates();
const ShadowStageData::CamStore &vLCams =
_pStageData->getLightCameras();
if(_pStage->getGlobalShadowIntensity() != 0.0)
{
for(UInt32 i = 0;i < vLights.size();i++)
{
if(vLightStates[i] != 0)
activeLights++;
}
}
else
{
for(UInt32 i = 0;i < vLights.size();i++)
{
if(vLightStates[i] != 0 &&
vLights [i].second->getShadowIntensity() != 0.0)
{
activeLights++;
}
}
}
Real32 shadowIntensity;
if(_pStage->getGlobalShadowIntensity() != 0.0)
{
shadowIntensity = (_pStage->getGlobalShadowIntensity() /
activeLights);
}
else
{
shadowIntensity =
(vLights[num].second->getShadowIntensity() /
activeLights);
}
if(vLights[num].second->getShadowIntensity() != 0.0 ||
_pStage->getGlobalShadowIntensity() != 0.0)
{
Matrix LVM, LPM, CVM;
vLCams[num]->getViewing(LVM,
pEnv->getPixelWidth(),
pEnv->getPixelHeight());
vLCams[num]->getProjection(LPM,
pEnv->getPixelWidth(),
pEnv->getPixelHeight());
CVM = pEnv->getCameraViewing();
Matrix iCVM = CVM;
iCVM.invert();
Real32 texFactor;
if(vLights[num].second->getType() == SpotLight ::getClassType() ||
vLights[num].second->getType() == PointLight::getClassType())
{
texFactor = Real32(_width) / Real32(_height);
}
else
{
texFactor = 1.0;
}
Matrix shadowMatrix = LPM;
shadowMatrix.mult(LVM);
shadowMatrix.mult(iCVM);
Matrix shadowMatrix2 = LVM;
shadowMatrix2.mult(iCVM);
Real32 xFactor = 1.0;
Real32 yFactor = 1.0;
Pnt3f lPos;
bool isDirLight;
Real32 sceneDiagLength;
if(vLights[num].second->getType() == PointLight::getClassType())
{
PointLight *tmpPoint;
tmpPoint = dynamic_cast<PointLight *>(
vLights[num].second.get());
lPos = tmpPoint->getPosition();
if(tmpPoint->getBeacon() != NULL)
{
Matrix m = tmpPoint->getBeacon()->getToWorld();
m.mult(lPos, lPos);
}
isDirLight = false;
Pnt3f center;
_pStageData->getLightRoot(num)->getVolume().getCenter(center);
Vec3f dir = lPos - center;
Real32 dirLength = dir.length();
Vec3f diff = (_pStageData->getLightRoot(num)->getVolume
().getMax() - center);
Real32 diffLength = diff.length();
sceneDiagLength = dirLength + diffLength;
}
else if(vLights[num].second->getType() == SpotLight::getClassType())
{
SpotLight *tmpSpot;
tmpSpot = dynamic_cast<SpotLight *>(
vLights[num].second.get());
lPos = tmpSpot->getPosition();
if(tmpSpot->getBeacon() != NULL)
{
Matrix m = tmpSpot->getBeacon()->getToWorld();
m.mult(lPos, lPos);
}
isDirLight = false;
Pnt3f center;
_pStageData->getLightRoot(num)->getVolume().getCenter(center);
Vec3f dir = lPos - center;
Real32 dirLength = dir.length();
Vec3f diff = (_pStageData->getLightRoot(num)->getVolume
().getMax() - center);
Real32 diffLength = diff.length();
sceneDiagLength = dirLength + diffLength;
}
else
{
isDirLight = true;
sceneDiagLength = 1.0;
}
Real32 lod;
if(_pStage->getShadowSmoothness() <= 0.1999)
lod = 0.5;
else if(_pStage->getShadowSmoothness() <= 0.3999)
lod = 1.5;
else if(_pStage->getShadowSmoothness() <= 0.5999)
lod = 2.5;
else if(_pStage->getShadowSmoothness() <= 0.7999)
lod = 3.5;
else
lod = 4.5;
if(_vShadowCmat.size() == uiActiveLightCount)
{
_vShadowCmat.push_back(ChunkMaterial::createLocal());
}
OSG_ASSERT( uiActiveLightCount < _vShadowCmat.size());
if(_vShadowSHLVar.size() == uiActiveLightCount)
{
_vShadowSHLVar.push_back(SimpleSHLVariableChunk::createLocal());
#ifndef OSG_NEW_SHADER
_vShadowSHLVar[uiActiveLightCount]->setSHLChunk(_shadowSHL);
#endif
}
OSG_ASSERT(uiActiveLightCount < _vShadowSHLVar.size());
_shadowSHL->addUniformVariable("shadowMap", 0);
_shadowSHL->addUniformVariable("oldFactorMap", 1);
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"firstRun",
(uiActiveLightCount == 0) ? Int32(1) : Int32(0));
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"intensity", shadowIntensity);
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"texFactor", texFactor);
//_shadowSHL->addUniformVariable("shadowBias", 0.0075f);
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"lightPM", shadowMatrix);
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"lightPM2", shadowMatrix2);
//_shadowSHL->addUniformVariable("shadowRange", Real32(shadowRange));
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"xFactor", Real32(xFactor));
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"yFactor", Real32(yFactor));
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"sceneDiagLength", Real32(sceneDiagLength));
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"Lod", Real32(lod));
_vShadowSHLVar[uiActiveLightCount]->addUniformVariable(
"isDirLight", bool(isDirLight));
ShadowStageData::ShadowMapStore &vShadowMaps =
_pStageData->getShadowMaps();
_vShadowCmat[uiActiveLightCount]->clearChunks();
_vShadowCmat[uiActiveLightCount]->addChunk(
_shadowSHL);
_vShadowCmat[uiActiveLightCount]->addChunk(
_vShadowSHLVar[uiActiveLightCount]);
_vShadowCmat[uiActiveLightCount]->addChunk(
vShadowMaps[num].pTexO);
_vShadowCmat[uiActiveLightCount]->addChunk(
vShadowMaps[num].pTexE);
_vShadowCmat[uiActiveLightCount]->addChunk(
_shadowFactorMapO);
_pStage->pushPartition(a,
(RenderPartition::CopyWindow |
RenderPartition::CopyViewing |
RenderPartition::CopyProjection |
RenderPartition::CopyFrustum |
RenderPartition::CopyNearFar |
RenderPartition::CopyViewportSize),
RenderPartition::StateSorting);
{
RenderPartition *pPart = a->getActivePartition();
pPart->addPreRenderCallback (&ShadowTreeHandler::setupAmbientModel);
pPart->addPostRenderCallback(&ShadowTreeHandler::endAmbientModel );
pPart->setRenderTarget(_pSceneFBO);
pPart->setDrawBuffer (GL_COLOR_ATTACHMENT1_EXT);
Node *light = vLights[num].first;
Node *parent = light->getParent();
if(parent != NULL)
{
a->pushMatrix(parent->getToWorld());
}
if(uiActiveLightCount == 0)
{
pPart->setBackground(_pClearBackground);
}
commitChanges();
a->overrideMaterial(_vShadowCmat[uiActiveLightCount],
a->getActNode());
_pStage->recurse(a, light);
a->overrideMaterial( NULL,
a->getActNode());
if(parent != NULL)
{
a->popMatrix();
}
}
_pStage->popPartition(a);
_firstRun = 0;
}
}
void VRShadowEngine::setupLightChunk(Light *pLight,
LightTypeE eType,
RenderAction *pAction,
EngineDataPtr pEngineData)
{
if(eType == Directional)
{
DirectionalLight *pDLight =
dynamic_cast<DirectionalLight *>(pLight);
LightChunkUnrecPtr pChunk = pEngineData->getLightChunk();
if(pChunk == NULL)
{
pChunk = LightChunk::createLocal();
pEngineData->setLightChunk(pChunk);
}
Color4f tmpVal(0.0, 0.0, 0.0, 1.0);
pChunk->setSpecular(tmpVal);
tmpVal.setValuesRGBA(0.2f, 0.2f, 0.2f, 1.0f);
pChunk->setDiffuse (tmpVal);
tmpVal.setValuesRGBA(0.0, 0.0, 0.0, 1.0);
pChunk->setAmbient (tmpVal);
Vec4f dir(pDLight->getDirection());
dir[3] = 0;
pChunk->setPosition(dir);
pChunk->setBeacon(pLight->getBeacon());
}
else if(eType == Point)
{
PointLight *pPLight = dynamic_cast<PointLight *>(pLight);
LightChunkUnrecPtr pChunk = pEngineData->getLightChunk();
if(pChunk == NULL)
{
pChunk = LightChunk::createLocal();
pEngineData->setLightChunk(pChunk);
}
Color4f tmpVal(0.0, 0.0, 0.0, 1.0);
pChunk->setSpecular(tmpVal);
tmpVal.setValuesRGBA(this->getShadowColor()[0],
this->getShadowColor()[1],
this->getShadowColor()[2],
this->getShadowColor()[3]);
pChunk->setDiffuse (tmpVal);
tmpVal.setValuesRGBA(0.0, 0.0, 0.0, 1.0);
pChunk->setAmbient (tmpVal);
Vec4f pos(pPLight->getPosition());
pos[3] = 1;
pChunk->setPosition(pos);
pChunk->setBeacon(pLight->getBeacon());
}
}
void VRShadowEngine::setupCamera(Light *pLight,
LightTypeE eType,
RenderAction *pAction,
EngineDataPtr pEngineData)
{
if(eType == Directional)
{
DirectionalLight *pDLight =
dynamic_cast<DirectionalLight *>(pLight);
MatrixCameraUnrecPtr pCam =
dynamic_cast<MatrixCamera *>(pEngineData->getCamera());
if(pCam == NULL)
{
pCam = MatrixCamera::createLocal();
pEngineData->setCamera(pCam);
}
Vec3f diff;
Pnt3f center;
Matrix transMatrix;
Node *pNode = pAction->getActNode();
// tmpDir = DirectionalLightPtr::dcast(_lights[i]);
diff = (pNode->getVolume().getMax() -
pNode->getVolume().getMin());
Real32 sceneWidth = diff.length() * 0.5f;
// Not final values. May get tweaked in the future
Real32 sceneHeight = diff.length() * 0.5f;
pNode->getVolume().getCenter(center);
Vec3f lightdir = pDLight->getDirection();
if(pLight->getBeacon() != NULL)
{
Matrix m = pLight->getBeacon()->getToWorld();
m.mult(lightdir, lightdir);
}
MatrixLookAt(transMatrix,
center + lightdir,
center,
Vec3f(0,1,0));
transMatrix.invert();
Matrix proMatrix;
proMatrix.setIdentity();
MatrixOrthogonal( proMatrix,
-sceneWidth, sceneWidth, -sceneHeight,
sceneHeight, -sceneWidth, sceneWidth);
pCam->setProjectionMatrix(proMatrix );
pCam->setModelviewMatrix (transMatrix);
}
else if(eType == Point)
{
PointLight *pPLight = dynamic_cast<PointLight *>(pLight);
MatrixCameraUnrecPtr pCam =
dynamic_cast<MatrixCamera *>(pEngineData->getCamera());
if(pCam == NULL)
{
pCam = MatrixCamera::createLocal();
pEngineData->setCamera(pCam);
}
Real32 angle;
Vec3f dist;
Pnt3f center;
Vec3f diff;
Matrix transMatrix;
Node *pNode = pAction->getActNode();
pNode->getVolume().getCenter(center);
Pnt3f lightpos = pPLight->getPosition();
if(pLight->getBeacon() != NULL)
{
Matrix m = pLight->getBeacon()->getToWorld();
m.mult(lightpos, lightpos);
}
MatrixLookAt(transMatrix,
lightpos,
center,
Vec3f(0,1,0));
transMatrix.invert();
diff = (pNode->getVolume().getMax() -
pNode->getVolume().getMin());
dist = lightpos - center;
angle = atan((diff.length() * 0.5) / dist.length());
Matrix proMatrix;
proMatrix.setIdentity();
MatrixPerspective( proMatrix,
2.f * angle,
1,
pAction->getActivePartition()->getNear(),
pAction->getActivePartition()->getFar ());
pCam->setProjectionMatrix(proMatrix );
pCam->setModelviewMatrix (transMatrix);
}
}
PVScene::PVScene(Scene *scene) {
glGenVertexArrays(1, &vertexArray);
glBindVertexArray(vertexArray);
GLCHECK();
glGenBuffers(1, &vertexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer);
GLCHECK();
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glEnableVertexAttribArray(2);
glEnableVertexAttribArray(3);
glVertexAttribPointer(0, 3, GL_FLOAT, false, 64, (void *)0);
glVertexAttribPointer(1, 3, GL_FLOAT, false, 64, (void *)16);
glVertexAttribPointer(2, 3, GL_FLOAT, false, 64, (void *)32);
glVertexAttribPointer(3, 2, GL_FLOAT, false, 64, (void *)48);
GLCHECK();
std::vector<Vertex> vertices;
int vertexCount = 0;
int vertexOffset = 0;
int curr_material = scene->getTriangles()[0].material_id;
for (Triangle & tri : scene->getTriangles()) {
if (curr_material != tri.material_id) {
addMesh(scene, curr_material, vertexOffset, vertexCount);
vertexOffset += vertexCount;
vertexCount = 0;
curr_material = tri.material_id;
}
vertices.push_back(tri.v[0]);
vertices.push_back(tri.v[1]);
vertices.push_back(tri.v[2]);
vertexCount += 3;
}
addMesh(scene, curr_material, vertexOffset, vertexCount);
Camera *camera = scene->getCamera();
viewMatrix = lookAtLH(camera->getPosition(), camera->getTarget(), camera->getUp());
projectionMatrix = perspectiveLH(camera->getFOV(), camera->getAspectRatio(), 0.1f, 100.0f);
GLCHECK();
glBufferData(GL_ARRAY_BUFFER,
vertices.size() * sizeof(Vertex),
&vertices[0],
GL_DYNAMIC_DRAW);
GLCHECK();
glBindVertexArray(0);
GLCHECK();
for (int i = 0; i < scene->getNumLights(); i++) {
PointLight *light = (PointLight *)scene->getLight(i);
lights.push_back(new PVLight(light->getPosition(), light->getRadiance()));
}
shader = new PVShader(vs3d_source, fs3d_source);
GLCHECK();
}