Axis-Aligned Bounding Tetrahedra and Octahedra for Ray Tracing Bounding Volume Hierarchies

• presents Axis-Aligned-Bounding-Tetrahedron (AABT) and Axis-Aligned-Bounding-Octahedron (AABO) as alternative approaches to axis-aligned Bounding Boxes (AABB) to build acceleration structures
• displays the data structures in 2D and extends into 3D
• showing results and possible proposals for more research into the topic

Anatomy of a frame in AnKi

• frame breakdown of a single frame in the Anki engine
• clustered deferred engine
• discussing shadows, Screen space ambient occlusion, global illumination, Volumetric lighting/fog, reflections, tone mapping, and compositing

Wavefront Path Tracing

• the article explains what wavefront path tracing is
• how it enables efficient path tracing on GPUs
• implementation provided in Lighthouse 2

Robust pipeline cache serialization

• provides an overview of Vulkan pipeline caching
• list of possible problems that can be encountered
• different driver behavior and IO issues require user code validation
• shows the system used by Roblox to validate the cache

High-Performance Graphics 2019

• slides for the High-Performance Graphics 2019 conference are now available
• topics include raytracing, 3D text rendering, denoising, many light techniques, shadows, VR and more

Physically Based Shading

• A Shadertoy that shows the different components the define physically based rendering
• with explanations and demos of the separate components

GPU-Assisted Validation

• GPU based validation in Vulkan has been updated
• now supports more cases, the article explains which are currently supported
• the whitepaper provides more details

Radeon GPU Analyzer 2.2 for Direct3D®12 Compute

• Radeon GPU Analyzer can now compile compute shaders to the target ISA without having to have the GPU installed in the host machine
• the article explains how the shader compiler pipeline works and the different ways to express the required information

Dot products and planes

• an article explains the dot product and how it relates to the plane equation

Dot product and its relationship to matrices

• shows how the dot product and axis define matrices
• dot products can be used to decompose effects onto the axis
• 3 axis represents a 3x3 matrix

How to ray-intersect a transformed geometry, without actually transforming it: a geometric illustration

• the article shows that with the inverse-transformation applied to a ray origin and direction
• intersection tests can be done against the untransformed geometry