//-----------------------------------------------------------------------------
void ZonePlugin::zoneUtility( void )
{
const osScalar drawExtent = _zoneExtent.x * OS_SCALAR( 2.0 ) - 0.005f;
if( 1 == _solid )
{
// colors for checkerboard
const Color gray(0.27f);
Color zoneGray( getZoneColor() );
zoneGray.setR( zoneGray.r() * gray.r() );
zoneGray.setG( zoneGray.g() * gray.g() );
zoneGray.setB( zoneGray.b() * gray.b() );
// draw checkerboard grid
drawXZCheckerboardGrid( drawExtent, 10, position(), zoneGray, gray);
#if 0
AABBox kZoneAABBox;
kZoneAABBox.initializeWithCenterAndExtent( position(), _zoneExtent );
kZoneAABBox.draw( getZoneColor() );
#endif
}
else
{
// alternate style
drawXZLineGrid( drawExtent, 1, position(), _ZoneColor );
}
const osScalar borderWidth = getBorderWidth();
if( borderWidth > 0 )
{
drawXZLineGrid( drawExtent + borderWidth * OS_SCALAR( 2.0 ), 1, position(), _BorderColor );
}
}
/**
* @return True if the bounding box collides or is inside this frustum
*/
template<class T> bool Frustum<T>::collideWithAABBox(const AABBox<T> &bbox) const
{
for (auto &plane : planes)
{
const Vector3<T> &normal = plane.getNormal();
Point3<T> nVertex(bbox.getMax());
if(normal.X >= 0.0)
{
nVertex.X = bbox.getMin().X;
}
if(normal.Y >= 0.0)
{
nVertex.Y = bbox.getMin().Y;
}
if(normal.Z >= 0.0)
{
nVertex.Z = bbox.getMin().Z;
}
if (plane.distance(nVertex) > 0.0)
{
return false;
}
}
return true;
}
/**
* Split the bounding box in several bounding boxes at limitSize.
* If original box doesn't exceed limit size, the original box is returned.
*/
std::vector<AABBox<float>> SplitBoundingBox::split(const AABBox<float> &aabbox) const
{
std::vector<float> axisSplits[3];
for(unsigned int axis=0; axis<3; ++axis)
{
float size = aabbox.getHalfSize(axis) * 2.0f;
axisSplits[axis].push_back(aabbox.getMin()[axis]);
auto nbSplits = static_cast<int>(std::ceil(size/limitSize));
float maxValue = aabbox.getMax()[axis];
for(int split = 0; split < nbSplits; ++split)
{
float splitValue = std::min(aabbox.getMin()[axis] + limitSize*(split+1), maxValue);
axisSplits[axis].push_back(splitValue);
}
}
std::vector<AABBox<float>> splittedBoundingBox;
for(unsigned int x=1; x<axisSplits[0].size(); ++x)
{
for(unsigned int y=1; y<axisSplits[1].size(); ++y)
{
for(unsigned int z=1; z<axisSplits[2].size(); ++z)
{
Point3<float> minPoint(axisSplits[0][x-1], axisSplits[1][y-1], axisSplits[2][z-1]);
Point3<float> maxPoint(axisSplits[0][x], axisSplits[1][y], axisSplits[2][z]);
splittedBoundingBox.emplace_back(AABBox<float>(minPoint, maxPoint));
}
}
}
return splittedBoundingBox;
}
void SunLightSource::UpdateSMCamera(Camera const & scene_camera)
{
float3 const dir = this->Direction();
float3 up_vec;
if (abs(MathLib::dot(-dir, scene_camera.UpVec())) > 0.95f)
{
up_vec = scene_camera.RightVec();
}
else
{
up_vec = scene_camera.UpVec();
}
float4x4 light_view = MathLib::look_at_lh(-dir, float3(0, 0, 0), up_vec);
AABBox const aabb = CalcFrustumExtents(scene_camera, scene_camera.NearPlane(), scene_camera.FarPlane(), light_view);
float3 const & center = aabb.Center();
float3 view_pos = MathLib::transform_coord(float3(center.x(), center.y(), aabb.Min().z()), MathLib::inverse(light_view));
sm_camera_->ViewParams(view_pos, view_pos + dir, up_vec);
float3 dimensions = aabb.Max() - aabb.Min();
sm_camera_->ProjOrthoParams(dimensions.x(), dimensions.y(), 0.0f, dimensions.z());
}
bool FrustumShadowData::areIdenticalAABBox(const AABBox<float> &shadowCasterReceiverBox1, const AABBox<float> &shadowCasterReceiverBox2) const
{
constexpr float SQUARE_EPSILON = 0.0001f * 0.0001f;
return shadowCasterReceiverBox1.getMin().squareDistance(shadowCasterReceiverBox2.getMin())<SQUARE_EPSILON
&& shadowCasterReceiverBox1.getMax().squareDistance(shadowCasterReceiverBox2.getMax())<SQUARE_EPSILON;
}
bool ZonePlugin::isVehicleInsideBorder( const AbstractVehicle& vehicle ) const
{
osVector3 checkZoneExtent = _zoneExtent;
checkZoneExtent.x += _borderWidth;
checkZoneExtent.z += _borderWidth;
AABBox testBox;
testBox.initializeWithCenterAndExtent( position(), checkZoneExtent );
return testBox.insideXZWithRadius(vehicle);
}
Vector3<float> CollisionConvexHullShape::computeLocalInertia(float mass) const
{
AABBox<float> aabbox = toAABBox(PhysicsTransform());
float width = 2.0 * aabbox.getHalfSize(0);
float height = 2.0 * aabbox.getHalfSize(1);
float depth = 2.0 * aabbox.getHalfSize(2);
float localInertia1 = (1.0/12.0) * mass * (height*height + depth*depth);
float localInertia2 = (1.0/12.0) * mass * (width*width + depth*depth);
float localInertia3 = (1.0/12.0) * mass * (width*width + height*height);
return Vector3<float>(localInertia1, localInertia2, localInertia3);
}
BoundOverlap OCTree::BoundVisible(size_t index, AABBox const & aabb) const
{
BOOST_ASSERT(index < octree_.size());
octree_node_t const & node = octree_[index];
if ((node.visible != BO_No) && MathLib::intersect_aabb_aabb(node.bb, aabb))
{
if (BO_Yes == node.visible)
{
return BO_Yes;
}
else
{
BOOST_ASSERT(BO_Partial == node.visible);
if (node.first_child_index != -1)
{
float3 const center = node.bb.Center();
int mark[6];
mark[0] = aabb.Min().x() >= center.x() ? 1 : 0;
mark[1] = aabb.Min().y() >= center.y() ? 2 : 0;
mark[2] = aabb.Min().z() >= center.z() ? 4 : 0;
mark[3] = aabb.Max().x() >= center.x() ? 1 : 0;
mark[4] = aabb.Max().y() >= center.y() ? 2 : 0;
mark[5] = aabb.Max().z() >= center.z() ? 4 : 0;
for (int j = 0; j < 8; ++ j)
{
if (j == ((j & 1) ? mark[3] : mark[0])
+ ((j & 2) ? mark[4] : mark[1])
+ ((j & 4) ? mark[5] : mark[2]))
{
BoundOverlap const bo = this->BoundVisible(node.first_child_index + j, aabb);
if (bo != BO_No)
{
return bo;
}
}
}
return BO_No;
}
else
{
return BO_Partial;
}
}
}
else
{
return BO_No;
}
}
void AABBNode::updateAABBox(float fatMargin)
{
if (isLeaf())
{
Point3<float> fatMargin3(fatMargin, fatMargin, fatMargin);
AABBox<float> bodyBox = bodyNodeData->retrieveBodyAABBox();
aabbox = AABBox<float>(bodyBox.getMin()-fatMargin3, bodyBox.getMax()+fatMargin3);
}else
{
aabbox = children[0]->getAABBox().merge(children[1]->getAABBox());
}
}
void ShapeToAABBoxTest::boxConversion()
{
CollisionBoxShape collisionBox(Vector3<float>(1.0, 2.0, 1.0)); //box 1x2x1
PhysicsTransform transform(urchin::Point3<float>(0.0, 0.0, 0.0), //move 0 unit on X, Y and Z axis
urchin::Quaternion<float>(urchin::Vector3<float>(0.0, 0.0, 1.0), 3.14159265358979/4)); //rotate 45° on Z axis
AABBox<float> box = collisionBox.toAABBox(transform);
AssertHelper::assertFloatEquals(box.getHalfSize(0), 2.12132034356);
AssertHelper::assertFloatEquals(box.getHalfSize(1), 2.12132034356);
AssertHelper::assertFloatEquals(box.getHalfSize(2), 1.0);
AssertHelper::assertPoint3FloatEquals(box.getMin(), Point3<float>(-2.12132034356, -2.12132034356, -1.0));
AssertHelper::assertPoint3FloatEquals(box.getMax(), Point3<float>(2.12132034356, 2.12132034356, 1.0));
}
bool ShadowPolygon::inside (const Vector2& pos, const AABBox& bbox) const {
Vector2 corners[4];
bbox.getCorners(pos, corners);
for (int i=0; i<4; i++)
if (!inside(corners[i]))
return false;
return true;
}
void ShapeToAABBoxTest::convexHullConversion()
{
Point3<float> boxPointsTab[] = {
Point3<float>(-1.0, -2.0, 1.0), Point3<float>(1.0, -2.0, 1.0), Point3<float>(1.0, 2.0, 1.0), Point3<float>(-1.0, 2.0, 1.0),
Point3<float>(-1.0, -2.0, -1.0), Point3<float>(1.0, -2.0, -1.0), Point3<float>(1.0, 2.0, -1.0), Point3<float>(-1.0, 2.0, -1.0),
};
std::vector<Point3<float>> boxPoints(boxPointsTab, boxPointsTab+sizeof(boxPointsTab)/sizeof(Point3<float>));
CollisionConvexHullShape collisionConvexHull(0.0, boxPoints);
PhysicsTransform transform(urchin::Point3<float>(0.0, 0.0, 0.0), //move 0 unit on X, Y and Z axis
urchin::Quaternion<float>(urchin::Vector3<float>(0.0, 0.0, 1.0), -3.14159265358979/4)); //rotate 45° on Z axis
AABBox<float> box = collisionConvexHull.toAABBox(transform);
AssertHelper::assertFloatEquals(box.getHalfSize(0), 2.12132034356);
AssertHelper::assertFloatEquals(box.getHalfSize(1), 2.12132034356);
AssertHelper::assertFloatEquals(box.getHalfSize(2), 1.0);
AssertHelper::assertPoint3FloatEquals(box.getMin(), Point3<float>(-2.12132034356, -2.12132034356, -1.0));
AssertHelper::assertPoint3FloatEquals(box.getMax(), Point3<float>(2.12132034356, 2.12132034356, 1.0));
}
AABBox<float> CollisionCompoundShape::toAABBox(const PhysicsTransform &physicsTransform) const
{
Point3<float> rotatedTranslation = physicsTransform.getOrientation().rotatePoint(Point3<float>(localizedShapes[0]->translation));
Point3<float> finalPosition = physicsTransform.getPosition().translate(rotatedTranslation.toVector());
PhysicsTransform shapeWorldTransform(finalPosition, physicsTransform.getOrientation());
AABBox<float> globalCompoundBox = localizedShapes[0]->shape->toAABBox(shapeWorldTransform);
for(unsigned int i=1; i<localizedShapes.size(); ++i)
{
rotatedTranslation = physicsTransform.getOrientation().rotatePoint(Point3<float>(localizedShapes[i]->translation));
finalPosition = physicsTransform.getPosition().translate(rotatedTranslation.toVector());
shapeWorldTransform.setPosition(finalPosition);
AABBox<float> compoundBox = localizedShapes[i]->shape->toAABBox(shapeWorldTransform);
globalCompoundBox = globalCompoundBox.merge(compoundBox);
}
return globalCompoundBox;
}
void ModelPreviewCanvas::AddjustCameraPos()
{
_Assert(mCamera != NULL);
_Assert(mModel != NULL);
AABBox bound;
mModel->CalcDynamicAABBox(IDENTITY_MATRIX, &bound);
float width = bound.GetSize().x;
float height = bound.GetSize().y;
float length = bound.GetSize().z;
float aspect = 0;
float fov = 0;
mCamera->GetCameraParams(NULL, NULL, &fov, &aspect);
float distY = (height / 2.0f) / tan(fov / 2.0f);
float distX = (height / 2.0f) / (aspect * tan(fov / 2.0f));
float dist = Max(distX, distY);
mCamera->SetWorldPosition(bound.GetCenter());
mCamera->Translate(0, 0, -dist - length);
mCamera->LookAt(bound.GetCenter());
HoverCameraController* hoverCameraController = New HoverCameraController(5.0f, 20.0f, -4*PI/9, 4*PI/9,
2.0f, 1000.0f, bound.GetCenter(), dist + length);
mCamera->SetCameraController(hoverCameraController);
}
void FrustumShadowData::updateShadowCasterReceiverBox(const AABBox<float> &shadowCasterReceiverBox, bool forceUpdateAllShadowMap)
{
if(areIdenticalAABBox(shadowCasterReceiverBox, this->shadowCasterReceiverBox) && !forceUpdateAllShadowMap)
{
this->shadowCasterReceiverBoxUpdated = false;
}else
{
this->shadowCasterReceiverBox = shadowCasterReceiverBox;
this->lightProjectionMatrix = shadowCasterReceiverBox.toProjectionMatrix();
this->shadowCasterReceiverBoxUpdated = true;
}
}
int Frustum::boxInFrustum(const AABBox &bbox)
{
int result = INSIDE;
for(unsigned int i=0; i<PLANECOUNT; i++)
{
if(planes[i]->isBehind(bbox.positiveVertex(planes[i]->normal)))
{
return OUTSIDE;
}
}
return result;
}
/**
* Updates frustum shadow data (models, shadow caster/receiver box, projection matrix)
*/
void ShadowManager::updateFrustumShadowData(const Light *const light, ShadowData *const shadowData)
{
if(light->hasParallelBeams())
{ //sun light
for(unsigned int i=0; i<splittedFrustum.size(); ++i)
{
AABBox<float> aabboxSceneIndependent = createSceneIndependentBox(splittedFrustum[i], light, shadowData->getLightViewMatrix());
OBBox<float> obboxSceneIndependentViewSpace = shadowData->getLightViewMatrix().inverse() * OBBox<float>(aabboxSceneIndependent);
const std::set<Model *> models = modelOctreeManager->getOctreeablesIn(obboxSceneIndependentViewSpace);
shadowData->getFrustumShadowData(i)->setModels(models);
AABBox<float> aabboxSceneDependent = createSceneDependentBox(aabboxSceneIndependent, obboxSceneIndependentViewSpace,
models, shadowData->getLightViewMatrix());
shadowData->getFrustumShadowData(i)->setShadowCasterReceiverBox(aabboxSceneDependent);
shadowData->getFrustumShadowData(i)->setLightProjectionMatrix(aabboxSceneDependent.toProjectionMatrix());
}
}else
{
throw std::runtime_error("Shadow not supported on omnidirectional light.");
}
}
void Mesh::addPrimitive(unsigned indexA, unsigned indexB, unsigned indexC, Material* material)
{
if (indexA == indexB || indexB == indexC)
{
return;
}
Triangle* newTri = new Triangle(&mVertices[indexA], &mVertices[indexB], &mVertices[indexC], material);
const AABBox bounds = newTri->bounds();
unsigned flatCount = 0;
for (unsigned i = 0; i < 3; ++i)
{
if (bounds.ll()[i] == bounds.ur()[i]) ++flatCount;
}
if (flatCount > 1)
{
delete newTri;
return;
}
mPrimitives.emplace_back(newTri);
}
void OCTree::DivideNode(size_t index, uint32_t curr_depth)
{
if (octree_[index].obj_ptrs.size() > 1)
{
size_t const this_size = octree_.size();
AABBox const parent_bb = octree_[index].bb;
float3 const parent_center = parent_bb.Center();
octree_[index].first_child_index = static_cast<int>(this_size);
octree_[index].visible = BO_No;
octree_.resize(this_size + 8);
for (SceneObjsType::const_reference so : octree_[index].obj_ptrs)
{
AABBox const & aabb = *so->PosBoundWS();
int mark[6];
mark[0] = aabb.Min().x() >= parent_center.x() ? 1 : 0;
mark[1] = aabb.Min().y() >= parent_center.y() ? 2 : 0;
mark[2] = aabb.Min().z() >= parent_center.z() ? 4 : 0;
mark[3] = aabb.Max().x() >= parent_center.x() ? 1 : 0;
mark[4] = aabb.Max().y() >= parent_center.y() ? 2 : 0;
mark[5] = aabb.Max().z() >= parent_center.z() ? 4 : 0;
for (int j = 0; j < 8; ++ j)
{
if (j == ((j & 1) ? mark[3] : mark[0])
+ ((j & 2) ? mark[4] : mark[1])
+ ((j & 4) ? mark[5] : mark[2]))
{
octree_[this_size + j].obj_ptrs.push_back(so);
}
}
}
for (size_t j = 0; j < 8; ++ j)
{
octree_node_t& new_node = octree_[this_size + j];
new_node.first_child_index = -1;
new_node.bb = AABBox(float3((j & 1) ? parent_center.x() : parent_bb.Min().x(),
(j & 2) ? parent_center.y() : parent_bb.Min().y(),
(j & 4) ? parent_center.z() : parent_bb.Min().z()),
float3((j & 1) ? parent_bb.Max().x() : parent_center.x(),
(j & 2) ? parent_bb.Max().y() : parent_center.y(),
(j & 4) ? parent_bb.Max().z() : parent_center.z()));
if (curr_depth < max_tree_depth_)
{
this->DivideNode(this_size + j, curr_depth + 1);
}
}
SceneObjsType empty;
octree_[index].obj_ptrs.swap(empty);
}
}
bool ModelComponent::Cull(const tt::GameContext& context)
{
tt::Vector3 vertices[8];
tt::Matrix4x4 wvpMat = m_pTransform->GetWorldMatrix() * context.pGame->GetActiveScene()->GetActiveCamera()->GetView() * context.pGame->GetActiveScene()->GetActiveCamera()->GetProjection();
AABBox aabBox = m_pModel->GetAABB();
aabBox.GetVertices(vertices);
//If one point is inside the view frustum, the bounding volume is visible
for(unsigned int i=0; i<8; ++i){
vertices[i] = vertices[i].TransformPoint(wvpMat);
if( vertices[i].x >= -1 && vertices[i].x <= 1 &&
vertices[i].y >= -1 && vertices[i].y <= 1 &&
vertices[i].z >= 0 && vertices[i].z <= 1 )
return false;
}
//Additional checks to make sure we don't cull edge cases
tt::Matrix4x4 invWvpMat = wvpMat.Inverse();
tt::Vector3 origin[] = {tt::Vector3(-1, -1, 0),
tt::Vector3(-1, 1, 0),
tt::Vector3( 1, -1, 0),
tt::Vector3( 1, 1, 0),
};
tt::Vector3 destination[] = {tt::Vector3(-1, -1, 1),
tt::Vector3(-1, 1, 1),
tt::Vector3( 1, -1, 1),
tt::Vector3( 1, 1, 1),
};
tt::Vector3 direction = tt::Vector3(0,0,1).TransformVector(invWvpMat);
if(aabBox.Intersect(Ray(origin[0].TransformPoint(invWvpMat), destination[0].TransformPoint(invWvpMat)), 0, 1) )
return false;
if(aabBox.Intersect(Ray(origin[1].TransformPoint(invWvpMat), destination[1].TransformPoint(invWvpMat)), 0, 1) )
return false;
if(aabBox.Intersect(Ray(origin[2].TransformPoint(invWvpMat), destination[2].TransformPoint(invWvpMat)), 0, 1) )
return false;
if(aabBox.Intersect(Ray(origin[3].TransformPoint(invWvpMat), destination[3].TransformPoint(invWvpMat)), 0, 1) )
return false;
return true;
}
void SDSMCascadedShadowLayer::UpdateCascades(Camera const & camera, float4x4 const & light_view_proj,
float3 const & light_space_border)
{
RenderFactory& rf = Context::Instance().RenderFactoryInstance();
RenderEngine& re = rf.RenderEngineInstance();
uint32_t const num_cascades = static_cast<uint32_t>(intervals_.size());
uint32_t const copy_index = frame_index_ & 1;
uint32_t const read_back_index = (0 == frame_index_) ? copy_index : !copy_index;
if (cs_support_)
{
re.BindFrameBuffer(FrameBufferPtr());
float max_blur_light_space = 8.0f / 1024;
float3 max_cascade_scale(max_blur_light_space / light_space_border.x(),
max_blur_light_space / light_space_border.y(),
std::numeric_limits<float>::max());
int const TILE_DIM = 128;
int dispatch_x = (depth_tex_->Width(0) + TILE_DIM - 1) / TILE_DIM;
int dispatch_y = (depth_tex_->Height(0) + TILE_DIM - 1) / TILE_DIM;
*interval_buff_param_ = interval_buff_;
*interval_buff_uint_param_ = interval_buff_;
*interval_buff_read_param_ = interval_buff_;
*cascade_min_buff_uint_param_ = cascade_min_buff_;
*cascade_max_buff_uint_param_ = cascade_max_buff_;
*cascade_min_buff_read_param_ = cascade_min_buff_;
*cascade_max_buff_read_param_ = cascade_max_buff_;
*scale_buff_param_ = scale_buff_;
*bias_buff_param_ = bias_buff_;
*depth_tex_param_ = depth_tex_;
*num_cascades_param_ = static_cast<int32_t>(num_cascades);
*inv_depth_width_height_param_ = float2(1.0f / depth_tex_->Width(0), 1.0f / depth_tex_->Height(0));
*near_far_param_ = float2(camera.NearPlane(), camera.FarPlane());
float4x4 const & inv_proj = camera.InverseProjMatrix();
float3 upper_left = MathLib::transform_coord(float3(-1, +1, 1), inv_proj);
float3 upper_right = MathLib::transform_coord(float3(+1, +1, 1), inv_proj);
float3 lower_left = MathLib::transform_coord(float3(-1, -1, 1), inv_proj);
*upper_left_param_ = upper_left;
*xy_dir_param_ = float2(upper_right.x() - upper_left.x(), lower_left.y() - upper_left.y());
*view_to_light_view_proj_param_ = camera.InverseViewMatrix() * light_view_proj;
*light_space_border_param_ = light_space_border;
*max_cascade_scale_param_ = max_cascade_scale;
re.Dispatch(*clear_z_bounds_tech_, 1, 1, 1);
re.Dispatch(*reduce_z_bounds_from_depth_tech_, dispatch_x, dispatch_y, 1);
re.Dispatch(*compute_log_cascades_from_z_bounds_tech_, 1, 1, 1);
re.Dispatch(*clear_cascade_bounds_tech_, 1, 1, 1);
re.Dispatch(*reduce_bounds_from_depth_tech_, dispatch_x, dispatch_y, 1);
re.Dispatch(*compute_custom_cascades_tech_, 1, 1, 1);
interval_buff_->CopyToBuffer(*interval_cpu_buffs_[copy_index]);
scale_buff_->CopyToBuffer(*scale_cpu_buffs_[copy_index]);
bias_buff_->CopyToBuffer(*bias_cpu_buffs_[copy_index]);
GraphicsBuffer::Mapper interval_mapper(*interval_cpu_buffs_[read_back_index], BA_Read_Only);
GraphicsBuffer::Mapper scale_mapper(*scale_cpu_buffs_[read_back_index], BA_Read_Only);
GraphicsBuffer::Mapper bias_mapper(*bias_cpu_buffs_[read_back_index], BA_Read_Only);
float2* interval_ptr = interval_mapper.Pointer<float2>();
float3* scale_ptr = scale_mapper.Pointer<float3>();
float3* bias_ptr = bias_mapper.Pointer<float3>();
for (size_t i = 0; i < intervals_.size(); ++ i)
{
float3 const & scale = scale_ptr[i];
float3 const & bias = bias_ptr[i];
intervals_[i] = interval_ptr[i];
scales_[i] = scale;
biases_[i] = bias;
}
}
else
{
float2 const near_far(camera.NearPlane(), camera.FarPlane());
reduce_z_bounds_from_depth_pp_->SetParam(1, near_far);
reduce_z_bounds_from_depth_pp_->Apply();
for (uint32_t i = 1; i < depth_deriative_tex_->NumMipMaps(); ++ i)
{
int width = depth_deriative_tex_->Width(i - 1);
int height = depth_deriative_tex_->Height(i - 1);
float delta_x = 1.0f / width;
float delta_y = 1.0f / height;
float4 delta_offset(delta_x, delta_y, -delta_x / 2, -delta_y / 2);
reduce_z_bounds_from_depth_mip_map_pp_->SetParam(0, delta_offset);
reduce_z_bounds_from_depth_mip_map_pp_->OutputPin(0, depth_deriative_small_tex_, i - 1);
reduce_z_bounds_from_depth_mip_map_pp_->Apply();
int sw = depth_deriative_tex_->Width(i);
int sh = depth_deriative_tex_->Height(i);
depth_deriative_small_tex_->CopyToSubTexture2D(*depth_deriative_tex_, 0, i, 0, 0, sw, sh,
0, i - 1, 0, 0, sw, sh);
}
compute_log_cascades_from_z_bounds_pp_->SetParam(1, static_cast<int32_t>(num_cascades));
compute_log_cascades_from_z_bounds_pp_->SetParam(2, near_far);
compute_log_cascades_from_z_bounds_pp_->Apply();
interval_tex_->CopyToSubTexture2D(*interval_cpu_texs_[copy_index], 0, 0, 0, 0, num_cascades, 1,
0, 0, 0, 0, num_cascades, 1);
Texture::Mapper interval_mapper(*interval_cpu_texs_[read_back_index], 0, 0,
TMA_Read_Only, 0, 0, num_cascades, 1);
Vector_T<half, 2>* interval_ptr = interval_mapper.Pointer<Vector_T<half, 2> >();
for (size_t i = 0; i < intervals_.size(); ++ i)
{
float2 const interval(static_cast<float>(interval_ptr[i].x()),
static_cast<float>(interval_ptr[i].y()));
AABBox aabb = CalcFrustumExtents(camera, interval.x(), interval.y(), light_view_proj);
aabb &= AABBox(float3(-1, -1, -1), float3(+1, +1, +1));
aabb.Min() -= light_space_border;
aabb.Max() += light_space_border;
aabb.Min().x() = +aabb.Min().x() * 0.5f + 0.5f;
aabb.Min().y() = -aabb.Min().y() * 0.5f + 0.5f;
aabb.Max().x() = +aabb.Max().x() * 0.5f + 0.5f;
aabb.Max().y() = -aabb.Max().y() * 0.5f + 0.5f;
std::swap(aabb.Min().y(), aabb.Max().y());
float3 const scale = float3(1.0f, 1.0f, 1.0f) / (aabb.Max() - aabb.Min());
float3 const bias = -aabb.Min() * scale;
intervals_[i] = interval;
scales_[i] = scale;
biases_[i] = bias;
}
}
this->UpdateCropMats();
++ frame_index_;
}
void PSSMCascadedShadowLayer::UpdateCascades(Camera const & camera, float4x4 const & light_view_proj,
float3 const & light_space_border)
{
float const range = camera.FarPlane() - camera.NearPlane();
float const ratio = camera.FarPlane() / camera.NearPlane();
std::vector<float> distances(intervals_.size() + 1);
for (size_t i = 0; i < intervals_.size(); ++ i)
{
float p = i / static_cast<float>(intervals_.size());
float log = camera.NearPlane() * std::pow(ratio, p);
float uniform = camera.NearPlane() + range * p;
distances[i] = lambda_ * (log - uniform) + uniform;
}
distances[intervals_.size()] = camera.FarPlane();
for (size_t i = 0; i < intervals_.size(); ++ i)
{
AABBox aabb = CalcFrustumExtents(camera, distances[i], distances[i + 1],
light_view_proj);
aabb &= AABBox(float3(-1, -1, -1), float3(+1, +1, +1));
aabb.Min() -= light_space_border;
aabb.Max() += light_space_border;
aabb.Min().x() = +aabb.Min().x() * 0.5f + 0.5f;
aabb.Min().y() = -aabb.Min().y() * 0.5f + 0.5f;
aabb.Max().x() = +aabb.Max().x() * 0.5f + 0.5f;
aabb.Max().y() = -aabb.Max().y() * 0.5f + 0.5f;
std::swap(aabb.Min().y(), aabb.Max().y());
float3 const scale = float3(1.0f, 1.0f, 1.0f) / (aabb.Max() - aabb.Min());
float3 const bias = -aabb.Min() * scale;
intervals_[i] = float2(distances[i], distances[i + 1]);
scales_[i] = scale;
biases_[i] = bias;
}
this->UpdateCropMats();
}
void CollisionConvexHullShape::initializeDistances()
{
AABBox<float> aabbox = toAABBox(PhysicsTransform());
maxDistanceToCenter = aabbox.getMaxHalfSize();
minDistanceToCenter = aabbox.getMinHalfSize();
}
void COpenGLGrassRenderer::update(float fDeltaTimeInSecond, const Vector4D& camPos, const Frustum& viewFrustum, CSGPGrass* pGrass)
{
m_vCameraPos = camPos;
m_GrassClusterInstanceArray.clearQuick();
if( !pGrass )
return;
SGPVertex_GRASS_Cluster tempData;
CSGPTerrainChunk** pChunkEnd = pGrass->m_TerrainGrassChunks.end();
for( CSGPTerrainChunk** pChunkStart = pGrass->m_TerrainGrassChunks.begin(); pChunkStart < pChunkEnd; pChunkStart++ )
{
if( !m_pRenderDevice->GetWorldSystemManager()->isTerrainChunkVisible( *pChunkStart ) )
continue;
for(uint32 i=0; i<(*pChunkStart)->GetGrassClusterDataCount(); i++ )
{
// None Flag, skip this Cluster
uint32 nGrassSetFlag = (*pChunkStart)->GetGrassClusterData()[i].nData;
if( nGrassSetFlag == 0 )
continue;
tempData.vPosition[0] = (*pChunkStart)->GetGrassClusterData()[i].fPositionX;
tempData.vPosition[1] = (*pChunkStart)->GetGrassClusterData()[i].fPositionY;
tempData.vPosition[2] = (*pChunkStart)->GetGrassClusterData()[i].fPositionZ;
tempData.vPosition[3] = float( (nGrassSetFlag & 0x00FF0000) >> 16 );
// GrassCluster is not inside the camera Frustum, skip this Cluster
AABBox GrassClusterAABB;
GrassClusterAABB += Vector3D(tempData.vPosition[0] - m_vDefaultGrassSize.x, tempData.vPosition[1], tempData.vPosition[2] - m_vDefaultGrassSize.x);
GrassClusterAABB += Vector3D(tempData.vPosition[0] + m_vDefaultGrassSize.x, tempData.vPosition[1] + m_vDefaultGrassSize.y, tempData.vPosition[2] + m_vDefaultGrassSize.x);
if( !GrassClusterAABB.Intersects(viewFrustum) )
continue;
// GrassCluster is too far from the Grass Far Fading distance, skip this Cluster
float fGrassDis = (m_vCameraPos - Vector4D(tempData.vPosition[0], tempData.vPosition[1], tempData.vPosition[2])).GetLength();
if( fGrassDis > CSGPWorldConfig::getInstance()->m_fGrassFarFadingEnd )
continue;
// Too many grass Cluster
if( m_GrassClusterInstanceArray.size() + 1 > INIT_GRASSCLUSTERINSTANCE_NUM )
continue;
tempData.vPackedNormal[0] = (uint8)(((*pChunkStart)->GetGrassClusterData()[i].nPackedNormal & 0xFF000000) >> 24);
tempData.vPackedNormal[1] = (uint8)(((*pChunkStart)->GetGrassClusterData()[i].nPackedNormal & 0x00FF0000) >> 16);
tempData.vPackedNormal[2] = (uint8)(((*pChunkStart)->GetGrassClusterData()[i].nPackedNormal & 0x0000FF00) >> 8);
tempData.vPackedNormal[3] = (uint8)((nGrassSetFlag & 0xFF000000) >> 24);
tempData.vColor[0] = tempData.vColor[1] = tempData.vColor[2] = 1.0f;
tempData.vColor[3] = 1.0f - jlimit(0.0f, 1.0f, (fGrassDis - CSGPWorldConfig::getInstance()->m_fGrassFarFadingStart) / (CSGPWorldConfig::getInstance()->m_fGrassFarFadingEnd - CSGPWorldConfig::getInstance()->m_fGrassFarFadingStart));
tempData.vWindParams[0] = ((nGrassSetFlag & 0x0000FF00) >> 8) / 255.0f;
tempData.vWindParams[1] = 0.0f;
tempData.vWindParams[2] = (nGrassSetFlag & 0x000000FF) / 255.0f;
tempData.vWindParams[3] = 0.0f;
m_GrassClusterInstanceArray.add( tempData );
}
}
// update grass rendering params
m_vTimeParams.x += fDeltaTimeInSecond;
m_vTimeParams.y = pGrass->m_fGrassPeriod;
m_vLightMapTextureDimision.Set(
1.0f / m_pRenderDevice->GetWorldSystemManager()->getTerrain()->GetTerrainWidth(),
1.0f / m_pRenderDevice->GetWorldSystemManager()->getTerrain()->GetTerrainWidth() );
m_vWindDirForce = pGrass->m_vWindDirectionAndStrength;
}
void ShadowMapRenderer::setupVirtualLightCamera(Camera* camera, DirectionalLightNode* lightNode, int cascadeIndex)
{
const float BOUND_EXPAND_FACTOR = 0.8f;
_Assert(camera != NULL);
_Assert(cascadeIndex >= 0 && cascadeIndex < CASCADE_COUNTS);
DirectionalLight* dirLight = lightNode->GetDirLight();
Vector3 lightDir = dirLight->GetDirection();
lightDir.Normalize();
Vector3 frustumPos[5];
{
float farZ = 0;
float aspect = 0;
float fov = 0;
camera->GetCameraParams(NULL, &farZ, &fov, &aspect);
farZ *= calcCascadeDist(cascadeIndex);
float fy = farZ * tanf(fov / 2.0f);
float fx = aspect * fy;
frustumPos[0] = Vector3::Zero;
frustumPos[1] = Vector3(-fx, fy, farZ);
frustumPos[2] = Vector3( fx, fy, farZ);
frustumPos[3] = Vector3(-fx, -fy, farZ);
frustumPos[4] = Vector3( fx, -fy, farZ);
}
D3DXMATRIX matCameraViewInv;
D3DXMatrixInverse(&matCameraViewInv, 0, &camera->ViewMatrix());
D3DXMATRIX matLightView;
{
Vector3 lightPos = lightNode->GetWorldPosition();
D3DXMATRIX matRotTranspose, matTransInverse;
D3DXMatrixTranspose(&matRotTranspose, &(lightNode->GetWorldOrient().Matrix()));
D3DXMatrixTranslation(&matTransInverse, -lightPos.x, -lightPos.y, -lightPos.z);
matLightView = matTransInverse * matRotTranspose;
}
AABBox lightSpaceBound;
for(int i = 0; i < 5; ++i)
{
Vector3 posW = PosVecTransform(frustumPos[i], matCameraViewInv);
Vector3 posL = PosVecTransform(posW, matLightView);
lightSpaceBound = AABBox::CombinePoint(lightSpaceBound, posL);
}
float nearZ = 0.1f;
float farZ = 0;
float width = 0;
float height = 0;
{
Vector3 lookDir = camera->GetWorldForward();
lookDir.Normalize();
float adjustFactor = lookDir.Dot(lightDir); // lookDir与lightDir贴近时, 向后扩展virtualCamera范围
float expandDist = adjustFactor * BOUND_EXPAND_FACTOR * fabsf(lightSpaceBound.mMax.z - lightSpaceBound.mMin.z);
Vector3 centerL = lightSpaceBound.GetCenter();
D3DXMATRIX matLightViewInv;
D3DXMatrixInverse(&matLightViewInv, 0, &matLightView);
Vector3 centerW = PosVecTransform(centerL, matLightViewInv);
float lightDist = fabsf(lightSpaceBound.mMax.z - lightSpaceBound.mMin.z) / 2.0f;
width = fabsf(lightSpaceBound.mMax.x - lightSpaceBound.mMin.x);
height = fabsf(lightSpaceBound.mMax.y - lightSpaceBound.mMin.y);
farZ = 2.0f * lightDist + expandDist;
mVirtualCamera[cascadeIndex].pos = centerW - (lightDist + expandDist) * lightDir;
}
D3DXMATRIX matLightProj;
D3DXMatrixOrthoLH(&matLightProj, width, height, nearZ, farZ);
D3DXMATRIX matVirtualCameraView;
{
Vector3 virtualCameraPos = mVirtualCamera[cascadeIndex].pos;
D3DXMATRIX matRotTranspose, matTransInverse;
D3DXMatrixTranspose(&matRotTranspose, &(lightNode->GetWorldOrient().Matrix()));
D3DXMatrixTranslation(&matTransInverse, -virtualCameraPos.x, -virtualCameraPos.y, -virtualCameraPos.z);
matVirtualCameraView = matTransInverse * matRotTranspose;
mVirtualCamera[cascadeIndex].bound = AABBox::MatTransform(AABBox(Vector3(0, 0, farZ/2.0f), width, height, farZ),
InversedMatrix(matVirtualCameraView));
}
mVirtualCamera[cascadeIndex].matVP = matVirtualCameraView * matLightProj;
}
void Renderer::fitViewNearFarToObjects(Float2& near_far,
const Float4x4& view, const float near_min, const float far_max,
const bool inc_light_vols) const {
near_far.set(near_min, far_max);
return;
// Note, the fitting is NOT tight. Firstly, we're using the geometry's
// axis aligned bounding box, which is not tight (after the model
// transform) then we're assuming the size of the box is maximum after
// rotation into the camera space (which is also not tight).
// Recall: OpenGL convention is to look down the negative Z axis,
// therefore, more negative values are actually further away.
near_far[0] = -std::numeric_limits<float>::infinity(); // znear
near_far[1] = std::numeric_limits<float>::infinity(); // zfar
float min_z, max_z;
gm_->renderStackReset();
while (!gm_->renderStackEmpty()) {
GeometryInstance* cur_geometry = gm_->renderStackPop();
AABBox* aabbox = cur_geometry->aabbox();
if (aabbox) {
aabbox->calcMinMaxZBoundInViewSpace(min_z, max_z, view);
if (max_z < near_far[1]) {
near_far[1] = max_z;
}
if (min_z > near_far[0]) {
near_far[0] = min_z;
}
}
}
// Also fit to light geometry:
if (inc_light_vols) {
Float3 pos_source;
Float3 dir;
float rad;
Float3 center_view;
LightPoint* light_point;
LightSpot* light_spot;
for (uint32_t i = 0; i < lighting_->lights().size(); i++) {
switch (lighting_->lights()[i]->type()) {
case LIGHT_POINT:
light_point = (LightPoint*)(lighting_->lights()[i]);
// Calculate model view projection matrix
Float3::affineTransformPos(center_view, view,
light_point->pos_world());
rad = light_point->outside_rad();
if ((center_view[2] - rad) < near_far[1]) {
near_far[1] = center_view[2] - rad;
}
if ((center_view[2] + rad) > near_far[0]) {
near_far[0] = center_view[2] + rad;
}
break;
case LIGHT_SPOT_VSM:
case LIGHT_SPOT:
light_spot = (LightSpot*)(lighting_->lights()[i]);
// Check the source point
Float3::affineTransformPos(pos_source, view,
light_spot->pos_world());
if (pos_source[2] < near_far[1]) {
near_far[1] = pos_source[2];
}
if (pos_source[2] > near_far[0]) {
near_far[0] = pos_source[2];
}
// Now check the cone end
Float3::affineTransformPos(center_view, view,
light_spot->cone_center_world());
rad = light_spot->cone_outside_radius();
if ((center_view[2] - rad) < near_far[1]) {
near_far[1] = center_view[2] - rad;
}
if ((center_view[2] + rad) > near_far[0]) {
near_far[0] = center_view[2] + rad;
}
break;
default:
break;
}
}
}
near_far[0] += LOOSE_EPSILON;
near_far[1] -= LOOSE_EPSILON;
// now clamp the near and far to the user defined values
if (near_far[0] > near_min) {
near_far[0] = near_min;
}
if (near_far[1] < far_max) {
near_far[1] = far_max;
}
if (near_far[1] > near_far[0]) {
near_far[1] = near_far[0] - 0.1f;
}
}
/**
* @return Box in light space containing shadow caster and receiver (scene dependent)
*/
AABBox<float> ShadowManager::createSceneDependentBox(const AABBox<float> &aabboxSceneIndependent, const OBBox<float> &obboxSceneIndependentViewSpace,
const std::set<Model *> &models, const Matrix4<float> &lightViewMatrix) const
{
AABBox<float> aabboxSceneDependent;
bool boxInitialized = false;
AABBox<float> aabboxSceneIndependentViewSpace = obboxSceneIndependentViewSpace.toAABBox();
for(std::set<Model *>::iterator it = models.begin(); it!=models.end(); ++it)
{
const Model* model = *it;
if(model->isProduceShadow())
{
const std::vector<AABBox<float>> &splittedAABBox = model->getSplittedAABBox();
for(unsigned int i=0; i<splittedAABBox.size(); ++i)
{
if(splittedAABBox.size()==1 || obboxSceneIndependentViewSpace.collideWithAABBox(splittedAABBox[i]))
{
if(boxInitialized)
{
aabboxSceneDependent = aabboxSceneDependent.merge(lightViewMatrix * splittedAABBox[i]);
}else
{
aabboxSceneDependent = lightViewMatrix * splittedAABBox[i];
boxInitialized = true;
}
}
}
}
}
Point3<float> cutMin(
aabboxSceneDependent.getMin().X<aabboxSceneIndependent.getMin().X ? aabboxSceneIndependent.getMin().X : aabboxSceneDependent.getMin().X,
aabboxSceneDependent.getMin().Y<aabboxSceneIndependent.getMin().Y ? aabboxSceneIndependent.getMin().Y : aabboxSceneDependent.getMin().Y,
aabboxSceneIndependent.getMin().Z); //shadow can be projected outside the box: value cannot be capped
Point3<float> cutMax(
aabboxSceneDependent.getMax().X>aabboxSceneIndependent.getMax().X ? aabboxSceneIndependent.getMax().X : aabboxSceneDependent.getMax().X,
aabboxSceneDependent.getMax().Y>aabboxSceneIndependent.getMax().Y ? aabboxSceneIndependent.getMax().Y : aabboxSceneDependent.getMax().Y,
aabboxSceneDependent.getMax().Z>aabboxSceneIndependent.getMax().Z ? aabboxSceneIndependent.getMax().Z : aabboxSceneDependent.getMax().Z);
cutMin.X = (cutMin.X<0.0f) ? cutMin.X-(lightViewOverflowStepSize+fmod(cutMin.X, lightViewOverflowStepSize)) : cutMin.X-fmod(cutMin.X, lightViewOverflowStepSize);
cutMin.Y = (cutMin.Y<0.0f) ? cutMin.Y-(lightViewOverflowStepSize+fmod(cutMin.Y, lightViewOverflowStepSize)) : cutMin.Y-fmod(cutMin.Y, lightViewOverflowStepSize);
cutMin.Z = (cutMin.Z<0.0f) ? cutMin.Z-(lightViewOverflowStepSize+fmod(cutMin.Z, lightViewOverflowStepSize)) : cutMin.Z-fmod(cutMin.Z, lightViewOverflowStepSize);
cutMax.X = (cutMax.X<0.0f) ? cutMax.X-fmod(cutMax.X, lightViewOverflowStepSize) : cutMax.X+(lightViewOverflowStepSize-fmod(cutMax.X, lightViewOverflowStepSize));
cutMax.Y = (cutMax.Y<0.0f) ? cutMax.Y-fmod(cutMax.Y, lightViewOverflowStepSize) : cutMax.Y+(lightViewOverflowStepSize-fmod(cutMax.Y, lightViewOverflowStepSize));
cutMax.Z = (cutMax.Z<0.0f) ? cutMax.Z-fmod(cutMax.Z, lightViewOverflowStepSize) : cutMax.Z+(lightViewOverflowStepSize-fmod(cutMax.Z, lightViewOverflowStepSize));
return AABBox<float>(cutMin, cutMax);
}
bool operator()(AABBox a, AABBox b)
{
return (a.mortonCentroid() < b.mortonCentroid());
}
bool BVH::compareBoxMorton(AABBox a, AABBox b)
{
return a.mortonCentroid() < b.mortonCentroid();
}
