rauwendaal.net

Blog v3.0

This is now the 3rd iteration of this blog, the first was Google Sites (classic), which proved rather cumbersome, and has now been replaced with a “new and improved” version, but I no longer trust Google, I’m actively…

Rendering Volume Filling Triangles in OpenGL (with no buffers)

This is the promised follow-up to Rendering a Screen Covering Triangle in OpenGL (with no buffers), except this time the goal is to write a shader that accesses every location in a 3d texture (volume). We use the same screen covering trick as before to draw a triangle…

Rendering a Screen Covering Triangle in OpenGL (with no buffers)

Readings on physically-based rendering

Another nice collections of links and papers too valuable to lose among all my bookmarks. This time on physically-based rendering, put together by Kostas Anagnostou (@thin…

Bindless textures can “store”

I don't know how I missed this when Nvidia released NV_bindless_texture, I guess because all the samples I saw used bindless…

AtomicCounters & IndirectBufferCommands

I’ve made use of Atomic Counters and Indirect Buffers in the past, but always in the most straightforward manner. I.e. create a dedicated buffer for…

Layered Reflective Shadow Maps for Voxel-based Indirect Illumination

So, a lot has happened. I completed my Doctorate, almost moved to Norway, but then ended up moving to Canada instead (Victoria, BC). I now work for the Advanced Technology…

Fixed imageAtomicAverageRGBA8

So I fixed some issues I had in my previous implementation of imageAtomicAverageRGBA8, see the previous post (“GLSL Snippet: emulating running atomic average of colors using imageAtomicCompSwap”) for an explanation of what I got wrong. Reposting the corrected…

CUDA 5 and OpenGL Interop and Dynamic Parallelism

I seem to revisit this every time every time Nvidia releases a new version of of CUDA.

CUDA 5: Enabling Dynamic Parallelism

I finally got a GPU capable of dynamic parallelism, so I finally decided to mess around with CUDA 5. But I discovered a couple of configuration options that are required if…

Hybrid Computational Voxelization Using the Graphics Pipeline

Got a paper published in the Journal of Computer Graphics Techniques, see it here

Real-time voxelization demo

Video of a real-time voxel animation demo.

GLSL Snippet emulating running atomic average of colors using imageAtomicCompSwap

This is basically straight out of the [Crassin & Greene] chapter from the excellent OpenGL Insights book, which calculates a running average for a RGB voxel color and stores it into a RGBA8 texture (using the alpha component as an access count). But for whatever reason…

Writing to 3-components buffers using the image API in OpenGL

As I've describe in…

OpenGL 4.3 released

OpenGL 4.3 has just been released and almost instantly G-Truc (Christophe Riccio) posted another excellent of his excellent OpenGL reviews. Additionally Mike Bailey has already made…

OpenGL should support loading shader files

OpenGL’s shader system is purely string based. Just pass it a couple of strings worth of shader code, compile, link, and go.

Writing to 3D OpenGL textures in CUDA 4.1 with 3D surface writes

Edit: For how this works in CUDA 5 see my new post CUDA 5 and OpenGL Interop and Dynamic Parallelism.

GLSL sign function

The GLSL sign function always seems a great way to remove some…

How to use CUDA 3.0’s new Graphics Interoperability API with OpenGL

It always bothered me that whenever I took a look at using CUDA in my graphics applications there didn’t seem to be an elegant…

OpenCV (and OpenGL)

So I started using OpenCV for my Computer Vision class, but I didn’t want to give up my OpenGL based framework, and since I had such a hard time finding any hints…