September, 2010

Sep 10

Material test scenes

The next release of Mitsuba will include documentation on many of the available plugins, especially materials. For this purpose, I’m currently modeling a material test scene to demonstrate the effects of various parameters in an intuitive way. Caution: programmer art follows!


As you can see, I’m rather bad at modeling and therefore open to any suggestions :)


Sep 10

Mitsuba 0.1.3 released

Builds for a new version of Mitsuba are now available for download. This is mainly a bugfix release to address a serious regression in the material system. Other notable changes are:

  • Imported scenes now store relative paths
  • OBJ importing works on Windows
  • Realtime preview (OpenGL + RTRT) fixed for point sources
  • The anisotropic Ward BRDF is now supported in the preview
  • Faster texture loading
  • The renderer now has a testcase framework similar to JUnit

Sep 10

Bug tracker

I’ve set up a public bug tracking system at the the following address:

Please create a report on this website whenever you find a bug in Mitsuba. It will be easiest to fix if you can also attach a scene file, which reproduces the error.

Sep 10

Mitsuba 0.1.2 released

Builds for a new version of Mitsuba are now available for download. Highlights of this release are:

  • Numerous bugfixes
  • Significantly improved COLLADA importer: it should now be able to handle most scenes from Maya, 3ds max, Blender and SketchUp
  • Basic graphical user interface for running the importer
  • Initial documentation, including some on the import process (available on the documentation page)
  • Support for environment sources in the realtime preview
  • When pressing the stop button while rendering, the partially rendered scene now remains on the screen. Pressing the stop button a second time switches back to the realtime preview
  • The user interface now has a fallback mode when the graphics card is lacking some required OpenGL features.
  • Create default cameras/lightsources if none are specified in a scene
  • Support for file drag & drop onto the user interface
  • The Mitsuba user interface now also doubles as an EXR viewer / tonemapper. Drag an EXR file onto the UI or open it using the File menu, and the image opens in a new tab. Afterwards, it is possible to export the image as a tonemapped 8-bit PNG image.
  • The realtime preview now has a ‘force diffuse’ feature to improve convergence in scenes with lots of glossy materials.
  • Two different navigation modes can now be chosen in the program settings
  • New material types: composite, difftrans, transparent, mask.
  • ldrtexture: support for loading uncompressed BMP and TGA images.
  • Switch to Xerces-C++ 3