Daryl Zuniga
darzu.bsky.social
Daryl Zuniga
@darzu.bsky.social
Loves gpu programming, compilers, optimization, and building things from scratch.
https://mastodon.gamedev.place/@sprig, https://darzu.io, https://sprig.land

Rendering Engineer at Bitshift Entertainment
Reposted by Daryl Zuniga
Our #SIGGRAPH2025 paper "Augmented Vertex Block Descent" presents an extremely fast and stable physics solver with hard constraints for handling joints and collisions.

The project page has a 2D demo with source code and more details:
graphics.cs.utah.edu/research/pro...
June 23, 2025 at 3:43 AM
Reposted by Daryl Zuniga
synopsis post:

recently i've been working on a rendering prototype. it's a Wolfenstein style fan raycaster (so CPU, no polygons).

it has:
displacement mapped walls
terrain raycaster floors (entirely different tech, but texturally matched with the walls).
(angle constrained) real time shadows
June 15, 2025 at 1:43 PM
Reposted by Daryl Zuniga
New blog post! "Measuring acceleration structures", in which we will compare BVH costs on various GPU architectures and drivers and attempt to understand the details enough on AMD hardware to make sense of the numbers!

Reposts appreciated :)

zeux.io/2025/03/31/m...
Measuring acceleration structures
Hardware accelerated raytracing, as supported by DirectX 12 and Vulkan, relies on an abstract data structure that stores scene geometry, known as “acceleration structure” and often referred to as “BVH...
zeux.io
April 1, 2025 at 4:49 AM
Reposted by Daryl Zuniga
I've now published my blog post, "I want a good parallel computer." raphlinus.github.io/gpu/2025/03/... . Thanks much to all the feedback on the draft, I'd like to think I've clarified some things that might have been confusing.
I want a good parallel computer
The GPU in your computer is about 10 to 100 times more powerful than the CPU, depending on workload. For real-time graphics rendering and machine learning, you are enjoying that power, and doing those...
raphlinus.github.io
March 21, 2025 at 7:58 PM
Reposted by Daryl Zuniga
My cozy town building game now has flowers and some simple bushes. I also updated the lighting of the grass to be a bit softer.

Feels much more alive now!
March 21, 2025 at 1:39 PM
Reposted by Daryl Zuniga
More progress on the lighting for my cozy town building game Lots of small tweaks and I've added back the ocean and materials.

Still more to do with the sky lighting, but first I want to get the sun light back and add contact shadows, then some more interesting textures and foliage!
March 14, 2025 at 7:14 PM