Wednesday, September 17, 2014
another ShaderToy, this time based off of the time coordinates as seen in Doctor Who (2005) S7E13 - "The Name of the Doctor". While the picture does justice to the line drawing algorithm I created for the task (I was offline at the time), to really appreciate it you need to see it moving. This one maintains a constant framerate on my Nexus5, so should work pretty well on WebGL devices with at least that much power.
Wednesday, September 10, 2014
So I decided I'd create this shader to keep him company. Then a nice chap called Andre told me I could use his awesome sound shader (sound shaders a black magic to me, which makes Andre's accomplishment all the more impressive) as background music. Took me about 5 hours of effort, which included "figuring out how this raymarching biz works". The lighting is a bit off but I figure light is supposed to be funny in the time vortex. Also I'm not aware of a way to do ambient occlusion in a raymarching fragment shader.
Friday, January 17, 2014
I've added *basic* LOD support, and added the all important colour bricks. Lighting bricks are the next brick in line. There are still some odd ray errors, and the colour does odd things when it's really thin (which at the moment, is always). Here's the commit.
Monday, January 13, 2014
Here in Australia it's summer time, which is a *bad* time for GPU computing if one does not possess air-conditioning. As the result of an incident, the program now uses the very nice NVLM on Nvidia cards, and the not quite as nice ADL on AMD cards to query the GPU temperature. The windows version of the NVLM code has not been tested - it has however been proven correct. If your drivers are new-ish, it should just work, or not, and the "or not" has been tested and does behave nicely. The AMD ADL stuff *should* work... at least I've tested it not working, and it not works as intended.
The OpenCL renderer has been removed pending me getting my hands on something with more modern OpenCL support. It lives on in the repo history. The Stargate model comes from here.