pixplosion.blogspot.com

PiXplosion

Tuesday, September 20, 2011. Photon mapper cleaned up. I cleaned up most of the bugs (I hope) in my ray-tracer/photon-mapper program. I decided to use a 3rd party matrix math library. Plus, I swapped out my old photon map for Jensen's from his book. Here's the same cornell box scene (i tweaked a few things like sphere positions and wall colors, etc). Most likely this occurs when the program searches the kd-tree structure for nearby photons. Up next, rendering participating media! Monday, June 13, 2011.

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PiXplosion | pixplosion.blogspot.com Reviews

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Tuesday, September 20, 2011. Photon mapper cleaned up. I cleaned up most of the bugs (I hope) in my ray-tracer/photon-mapper program. I decided to use a 3rd party matrix math library. Plus, I swapped out my old photon map for Jensen's from his book. Here's the same cornell box scene (i tweaked a few things like sphere positions and wall colors, etc). Most likely this occurs when the program searches the kd-tree structure for nearby photons. Up next, rendering participating media! Monday, June 13, 2011.

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PiXplosion | pixplosion.blogspot.com Reviews

https://pixplosion.blogspot.com

Tuesday, September 20, 2011. Photon mapper cleaned up. I cleaned up most of the bugs (I hope) in my ray-tracer/photon-mapper program. I decided to use a 3rd party matrix math library. Plus, I swapped out my old photon map for Jensen's from his book. Here's the same cornell box scene (i tweaked a few things like sphere positions and wall colors, etc). Most likely this occurs when the program searches the kd-tree structure for nearby photons. Up next, rendering participating media! Monday, June 13, 2011.

INTERNAL PAGES

pixplosion.blogspot.com

1

PiXplosion: June 2011

http://www.pixplosion.blogspot.com/2011_06_01_archive.html

Monday, June 13, 2011. Thesis: The First Post. Ok, so I've officially started working on my thesis. Long story short: I'm going to extend on this hair rendering model. Rather than using the traditional point-based photon approach, I will be implementing a relatively new beam-based approach. Which can produce better results for volumetric models. Sunday, June 5, 2011. Chip-8 emulator (part 2). Opcode = mem[pc] 8 mem[pc 1];. Simple enough. Decoding/executing it, not so much. This is due to my choic...

2

PiXplosion: September 2010

http://www.pixplosion.blogspot.com/2010_09_01_archive.html

Wednesday, September 29, 2010. I've implemented a k-d tree to my ray tracer in order to speed up the rendering process. To demonstrate the difference in speed, I replaced the two spheres in the original scene with a coarse model of the Stanford Bunny. The model contains 788 vertexes and 1443 triangles. With an uneven k-d tree, adding another level may actually slow down the program. The results below feature a 32-level k-d tree. Interestingly, using a smaller tree was more efficient in some cases. I had ...

3

PiXplosion: October 2010

http://www.pixplosion.blogspot.com/2010_10_01_archive.html

Wednesday, October 20, 2010. KD Trees, revisited. As I mentioned in the previous post. The k-d tree will not be balanced if we simply choose the middle of a voxel as a partition plane. Particularly in the bunny test scene, I didn't see the first split on the bunny until the 26th level of recursion. The key to building a more balanced tree lies in the selection of a good partition plane. Original K-D Tree Algorithm. Balanced K-D Tree Algorithm. Total Ray Tracer Run Time (sec). These are surprising results...

4

PiXplosion: September 2011

http://www.pixplosion.blogspot.com/2011_09_01_archive.html

Tuesday, September 20, 2011. Photon mapper cleaned up. I cleaned up most of the bugs (I hope) in my ray-tracer/photon-mapper program. I decided to use a 3rd party matrix math library. Plus, I swapped out my old photon map for Jensen's from his book. Here's the same cornell box scene (i tweaked a few things like sphere positions and wall colors, etc). Most likely this occurs when the program searches the kd-tree structure for nearby photons. Up next, rendering participating media! Photon mapper cleaned up.

5

PiXplosion: November 2010

http://www.pixplosion.blogspot.com/2010_11_01_archive.html

Wednesday, November 17, 2010. Photon Mapping - Caustics. I added a caustic map, which contains a tighter distribution of photons that bounce off reflective and transmissive materials. Because the photons are more tightly packed, a smaller kernel radius (for gathering radiance) is used to provide a sharper light effect. Here's the final result:. Friday, November 12, 2010. Here's an image on photon mapping (10k photons):. Here's some more pics of my Reinhard tone operator. Subscribe to: Posts (Atom).

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pixelsorcery.wordpress.com

Rendering a Gravitational Wave | pixel sorcery

https://pixelsorcery.wordpress.com/2011/04/11/rendering-a-gravitational-wave

Rendering a Gravitational Wave. This post is about rendering a gravitational wave (which may or may not be an actual thing) using a marching cubes algorithm. If anyone is wondering what a gravitational wave is I point you to the Wikipedia article. I started rendering with the RiPoints objects using the HSL color space increasing the Hue value with the density (normalizing it with the max value) which resulted in this render. Rotating things to the side looked like the image below. This was interesting ca...

pixelsorcery.wordpress.com

Rendering a Nebula | pixel sorcery

https://pixelsorcery.wordpress.com/2011/04/09/rendering-a-nebula

Today I’m going to write about making a nebula shader to make awesome looking galaxies and nebulae. This is part of my masters thesis which involves writing a Renderman pipeline for RIT’s visualization software called Spiegel. The data that is visualized comes from the Center for Computational Relativity and Gravitation. The reference image I was using was. Picture taken from http:/ objsam.wordpress.com/2008/04/17/nebula/. The next two are also interesting, but not really useful for nebulae. Going back t...

pixelsorcery.wordpress.com

welcome | pixel sorcery

https://pixelsorcery.wordpress.com/2010/04/02/hello-world

Welcome to my graphics blog where I will write about my ventures in the world of computer graphics. Trackback ( 0 ). Comments ( 0 ). Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. Address never made public). You are commenting using your WordPress.com account. ( Log Out. You are commenting using your Twitter account. ( Log Out. You are commenting using your Facebook account. ( Log Out. You are commenting using your Google account. ( Log Out.

pixelsorcery.wordpress.com

Fisheye Lens (Hyperbolic Lens) Vertex Shader in GLSL | pixel sorcery

https://pixelsorcery.wordpress.com/2010/07/13/fisheye-vertex-shader

Fisheye Lens (Hyperbolic Lens) Vertex Shader in GLSL. Then we take the magnitude of A and multiply it by the direction of D effectively rotating point A and bringing it closer to the center of the camera. Here is a scene with a regular 45 degree field of view. And now what we’ve all been waiting for. Per pixel phong shading fisheye lens shader. 1: varying vec4 normal ,. Light dir ,. Eye vec ,. 6: vec4 ambient ,. 8: 9: normal =. Gl Normal ,. 10: vec4 vVertex =. Gl Vertex ;. 11: light dir =. 12: eye vec =.

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pixplosion.blogspot.com

PiXplosion

Tuesday, September 20, 2011. Photon mapper cleaned up. I cleaned up most of the bugs (I hope) in my ray-tracer/photon-mapper program. I decided to use a 3rd party matrix math library. Plus, I swapped out my old photon map for Jensen's from his book. Here's the same cornell box scene (i tweaked a few things like sphere positions and wall colors, etc). Most likely this occurs when the program searches the kd-tree structure for nearby photons. Up next, rendering participating media! Monday, June 13, 2011.

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