Overview

Lightsprint Core calculates global illumination in dynamic and static scenes. Subsystems include fast ray-scene intersections. It is OpenGL/Direct3D independent.

API

Namespace: rr

Header: Lightsprint/RRSolver.h

calculates global illumination in static or dynamic scenes, offline or realtime
gives you full control over speed/quality
calculated illumination is available in vertex buffers, lightmaps and environment maps
communicates completely in custom units, e.g. screen colors
purely CPU, extensions for realtime rendering on GPU implemented in rr_gl::RRSolverGL

Samples RealtimeLights and RealtimeRadiosity show the result of integration, interactive Collada scene viewer with global illumination immediately responding to free movement of objects and lights.

Headers: Lightsprint/RRScene.h

data structure (RRScene): 3d scene loaded from disk (objects, lights)

Headers: Lightsprint/RRIllumination.h

data structure (RRObjectIllumination): object's illumination and more

Header: Lightsprint/RRBuffer.h

data structure (RRBuffer): texture, cube map, vertex buffer

Header: Lightsprint/RRObject.h

3d object properties: geometry, materials, position etc

Header: Lightsprint/RRCollider.h

finds ray-mesh intersections
thread safe, you can calculate any number of intersections at the same time
you can select technique in range from maximal speed to zero memory allocated
up to 2^32 vertices and 2^30 triangles in mesh
builds helper-structures and stores them in cache on disk

Sample HelloCollider shows the most simple usage scenario:

Create RRMesh using your vertex/index buffers.
Create RRCollider using your mesh.
Create RRRay using your ray.
Call RRCollider::intersect() to find intersections. Repeat for all rays.

Sample BunnyBenchmark shows how to detect collisions on all available CPUs/cores at once.

Header: Lightsprint/RRMesh.h

interface to 3d triangle mesh
tristrips, trilists, indexed or not (RRMesh::create, RRMesh::createIndexed)
positions, normals, tangents, bitangents, texcoords
can optimize:
- vertex welding (RRMesh::createOptimizedVertices)
- removes degenerated triangles (RRMesh::createOptimizedTriangles)
merges many small meshes into one big mesh without additional memory (RRMesh::createMultiMesh)
allows for procedural meshes, requires no memory (implementing your RRMesh takes few minutes)
up to 2^32-2 vertices and 2^32-2 triangles in mesh
thread safe, you can use mesh in any number of threads at the same time

Sample HelloMesh shows the most simple usage scenario, mesh is created out of existing array of vertices.

Header: Lightsprint/RRMath.h

math classes used by whole Lightsprint SDK
RRReal holds one real number, which is single precision float
RRVec2 is vector of 2 real numbers
RRVec3 is vector of 3 real numbers
RRVec4 is vector of 4 real numbers

Header: Lightsprint/RRDebug.h

debugging and reporting routines used by whole Lightsprint SDK
RRReporter processess all messages sent by Lightsprint SDK to you

Header: Lightsprint/RRLight.h

RRLight interface for point/spot/dir lights

Header: Lightsprint/RRVector.h

RRVector template, std::vector like container