Bipul Mohanto

Bipul Mohanto

Doctoral Researcher@ Foveated Rendering | 3D Graphics Rendering| Global Illumination | Multi-View Rendering | Applied Human Perception | Color Science | Computer Vision

Blog Posts on 3D Rendering Engines and Graphics APIs

2025

tauray

2 minute read

Published:

At the time of writing this (October, 2025), there are limited publicly available rendering engine that works for real-time stereo path tracing. The slow convergence with pixel dense display in VR is limiting real-time stereo path tracer. However, with the RT-core and GPU architecture improvements, I am noticing the recent trend of physically accurate light simulation in real-time rendering, e.g., games. Therefore, definitely with time, the real-time stereo path-tracing (and with other advanced global illumination algorithms) would be a real thing once we will overcome frame-rate constraint. Physically-accurate light simulation will minimized the difference between real and virtual world and extend the path of true immersion. Currently, 90 fps has become a golden standard for VR. However, the higher is the better for immersion.

Tamashii Beginner Tutorial

1 minute read

Published:

Tamashii is an excellent scientific rendering framework under development by the Department of Computer Graphics, TU Wien. Its main goal is to simplify the creation of research applications in the field of computer graphics by providing a fundamental structure in the form of libraries implementing resource loading, input handling, user interface creation, a complete rendering framework, and graphics API abstraction. The backend graphics API is Vulkan. However, Tamashii only supports single display systems, and \textbf{has not been modified for VR.}

Popular 3D Graphics APIs

less than 1 minute read

Published:

High-level API

The OpenGL sometimes considered as a high level graphics API. It is always the starting point for beginners. However, the applications are limited to the industry. Moreover, compare to other widely used APIs, e.g., Vulkan, DirectX, it is sometimes considered as a high level API. This level is referred to the graphics hardware and memory control.

2024

NVIDIA Falcor Real-Time Rendering Framework Beginner Guide Part 1

4 minute read

Published:

Works for NVidia Falcor 8.0, 7.0, and 6.0

Tried to write some instructions from my side on top of the original NVidia Falcor documentation (v6.0, 7.0, and 8.0), as the original Falcor’s documentation often found old and many things has changed since. This post is equivalent to Falcor’s README doc.

2023

2022

Installing NVIDIA OptiX on Windows 10/11

1 minute read

Published:

Windows Installation and Integration (OptiX, CUDA)

  • note: developers must check the latest driver version for OptiX, CUDA version, and CUDA host compiler before running
  • 1.e) and 3. is not compulsory to run OptiX, 3) is just to run default SDK examples
  • nsight visual studio edition automatically installed with CUDA toolkit installation

Unity: Variable Rate Shading Implementation on HTC Vive Pro Eye

5 minute read

Published:

This is a short tutorial about how to enable VRS feature for HMD using Unity3D. However, in the recent years (2025), many of the mentioned plugins and SDK might be deprecated. The interactions (eye gaze) has shifted to OpenXR. This tutorial is OpenVR-based. Therefore, it might be better you start from OpenXR.