pramanc / precomputed-radiance-transfer

undergraduate student course project in Zhejiang University

precomputed-radiance-transfer

undergraduate student course project in Zhejiang University

The diffuse and glossy materials are supported. Sorry I don't have time to clean the code.

how to use it :

prt -l xxxx.jpg output.txt bandnumber samplenumber(4096)

prt -o -d 1 xxxx.obj output.txt bandnumber samplenumber

prt -o -g 1 xxxx.obj output.txt bandnumber samplenumber

-l: means lighting, -o: object type(material of glossy)

dependency: opengl,AnttweakBar,glm,Eigen,Cimg

Code from the website:

1. The part to load a HDR image:HDRLoader.cpp, HDRLoader.h http://svn.openscenegraph.org/osg/OpenSceneGraph/branches/OpenSceneGraph-2.6/src/osgPlugins/hdr/hdrloader.cpp

2. The code of rotation of Spherical Harmonics is copied from Paul Debevec’ s project. http://www.paulsprojects.net/opengl/sh/sh.html

3. Create shader route: ShaderFunc.cpp,ShaderFunc.h Two functions: char* file_read(string filename) GLuint create_shader(string filename, GLenum type) http://en.wikibooks.org/wiki/GLSL_Programming/GLUT

result:

diffuse:

glossy:

performance:

Any problem, please contact [e-mail]