Graphics Programming weekly - Issue 212 - December 05, 2021

[video] Swizzle & Channel Manipulation - Shader Graph Basics - Episode 25

  • the video tutorial introduces swizzle operations
  • shows how to emulate functionality in Unity that is available natively in UE

fma: A faster, more accurate instruction

  • the article presents the shader multiply/add operation (fma/mad)
  • discusses how it’s mapped onto the hardware and allows more efficient and precise operations
  • shows example use cases, discussing the impact on the precision of the calculation results

The Definitive Weta Digital Guide to IBL

  • the tutorial describes the capturing process for image-based lighting
  • IBL probes are omnidirectional representations of lighting information captured from high dynamic range images of a location
  • shows how to capture the images and set up the pipeline to integrate the captures into the renderer
  • explains how all captured with different exposures are combined into a single IBL probe

Building a PS1 style retro 3D renderer

  • the article describes the hardware characteristics of the PS1 renderer
  • shows a visual demonstration of the effect of sub-pixel rasterization and perspective correct interpolation
  • additionally shows how to emulate the hardware shortcomings to create a PS1 style look on today’s hardware

Tiled Reservoir Sampling for Many-Light Rendering

  • the paper introduces a combination of tile-based stochastic light culling and reservoir sampling
  • this reduces the variance for lights close to surfaces such as common in Virtual Point Lights (VPLs) based indirect illumination systems

Gradients in linear space aren't better

  • the article shows how gradients differ with different color spaces
  • compares sRGB, linear, and Oklab color spaces

Arm Best Practice warnings in the Vulkan SDK

  • the article presents the Vulkan SDK layer architectures
  • introduces how to enable Arm performance warning layer
  • additionally shows how to run the layer on RenderDoc captures to gather information

Why gamers and developers should care about ray tracing

  • the article provides an overview of use cases for ray tracing
  • discussing disk and memory space-saving, shadows, reflection
  • also mentions the effects on user-generated content

Debugging Your Renderer (3/n): Assertions (and on not sweeping things under the rug)

  • the article discusses the importance of asserts for debugging a renderer
  • shows how asserts are implemented in PBRT
  • additionally presents an example from the PBRT development where asserts helped to catch a performance issue

Understanding Graphs in GPUView and RGP

  • the article explains what information GPUView and Radeon GPU Profiler show
  • shows how items are progressing through the queue over time
  • additionally shows how to see how utilized the GPU is over time

Custom Bloom Post-Process in Unreal Engine

  • the article provides an overview of the bloom technique and implementations
  • comparing the technique implemented by UE and Call of Duty and how the suggested solution is a combination
  • shows how to integrate a custom implementation into the UE4 codebase

Skeletal Animation In OpenGL using Assimp - Part 1

  • the video tutorial provides an overview of the skinning animation technique
  • explaining the process of how data is authored, animated, and encoded in a GPU friendly format
  • additionally shows how to set up, compile and use Assimp to parse the initial skinning poses

Thanks to atyuwen for support of this series.

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