Issues

• [Bug] Linear retarder Mueller matrix is discontinuous across oblique ray directions

  mitsuba-renderer/mitsuba3#1963 · Filter by author starc52 opened on Sep 11, 2026

• Area emitter normal mismatch between sample_direction and pdf_direction

  mitsuba-renderer/mitsuba3#1952 · Filter by author matttsss opened on Sep 7, 2026

• metal_rgb support missing?

  mitsuba-renderer/mitsuba3#1936 · Filter by author oscarbg opened on Aug 11, 2026
  1

• OpenPBR implementation

  mitsuba-renderer/mitsuba3#1918 · Filter by author pixelsandpointers opened on Jul 15, 2026
  7

• [Bug] dr.backward incorrectly raising error on scene parameter being differentiated

  mitsuba-renderer/mitsuba3#1910 · Filter by author Microno95 opened on Jun 26, 2026

• Race condition inside Embree with a large number of threads

  mitsuba-renderer/mitsuba3#1901 · Filter by author KBentley57 opened on Jun 22, 2026
  2

• OptiX compilation error: Unexpected cast from: { i32, i1 } to: float

  mitsuba-renderer/mitsuba3#1891 · Filter by author tatue64 opened on Jun 3, 2026
  4

• Memory leak when repeatedly calling mi.load_dict() – legacy cleanup APIs (dr.registry_clear) removed and current alternatives ineffective

  mitsuba-renderer/mitsuba3#1890 · Filter by author Fannnnn-jy opened on Jun 2, 2026
  4

• Rendering a scene with a large number of emitters

  mitsuba-renderer/mitsuba3#1883 · Filter by author KBentley57 opened on May 15, 2026
  2

• Direct integrator weighs delta emitters contributions incorrectly

  mitsuba-renderer/mitsuba3#1861 · Filter by author JurriaanD opened on Mar 23, 2026

• NaN values with volpath integrator and homogeneous medium

  mitsuba-renderer/mitsuba3#1860 · Filter by author blzq opened on Mar 16, 2026
  1

• Mitsuba default variant configuration does not account for namespace

  mitsuba-renderer/mitsuba3#1851 · Filter by author AshFungor opened on Feb 19, 2026
  1

• Differentiable prbvolpath does not really support spectral/RGB sigma_t

  mitsuba-renderer/mitsuba3#1846 · Filter by author tomasiser opened on Feb 6, 2026

• Issues with largestep - CHOLOD warning not positive definite

  mitsuba-renderer/mitsuba3#1831 · Filter by author tatue64 opened on Jan 15, 2026
  1

• Optimizing single/shared object across multiple scenes

  mitsuba-renderer/mitsuba3#1826 · Filter by author danielkorth opened on Jan 6, 2026
  1

• OptiX illegal memory access when calling drjit.nn in Mitsuba CUDA backend

  mitsuba-renderer/mitsuba3#1825 · Filter by author pedrovfigueiredo opened on Jan 4, 2026
  1

• Volume is not rendered when the camera is inside the bounding sphere

  mitsuba-renderer/mitsuba3#1824 · Filter by author MayaMaya4096 opened on Dec 23, 2025

• Circular import issue on clean install in conda environment (Python 3.14)

  mitsuba-renderer/mitsuba3#1820 · Filter by author rbstabbins opened on Dec 16, 2025
  5

• Spectral Projection Integrator Error

  mitsuba-renderer/mitsuba3#1819 · Filter by author the-casle opened on Dec 11, 2025

• Custom distant sensor variant used with rectangle surface, point target and k-d tree breaks with v3.7.1

  mitsuba-renderer/mitsuba3#1784 · Filter by author leroyvn opened on Oct 22, 2025
  1

• Unexpected rendering times between a lower-end machine and a higher-end machine.

  mitsuba-renderer/mitsuba3#1766 · Filter by author rghav222 opened on Oct 3, 2025
  2

• Use of vertex_color in roughplastic bsdf

  mitsuba-renderer/mitsuba3#1752 · Filter by author miangoleh opened on Sep 24, 2025
  2

• measured_polarized caused "out of memory"

  mitsuba-renderer/mitsuba3#1747 · Filter by author jsckdon opened on Sep 17, 2025
  1

• Migrating the SamplingIntegrator from Mitsuba 3.6 to 3.7

  mitsuba-renderer/mitsuba3#1746 · Filter by author MisEty opened on Sep 17, 2025
  17

• How to use the sggx_sample() function

  mitsuba-renderer/mitsuba3#1728 · Filter by author spock-the-wizard opened on Sep 1, 2025
  1