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JeGX's DevBlog
Fire Demo 
Friday, January 26, 2007, 12:16 PM - Hyperion
I've just released a new hyperion demo. This demo uses the particle system functionalities and shows a pretty cool fire with smoke:

I leeched some particle textures from another cool demo you can find here: shaderx-5-demo-codeexe-shadows.

This demo took me around one hour to be coded: 10% of the time for the real code and 90% for tweaking the fire playing with particles's params. :raspberry:

Anyways, the result is quite convincing even if the particles don't interact with the light... I believe I'll add some glsl entry points
to the Hyperion particle system...

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Ageia PhysX SDK for free 
Friday, November 24, 2006, 09:36 AM - News
Ageia has announced new licensing terms, allowing its PhysX SDK to be used and its runtime components distributed in all commercial and non-commercial PC projects for free.

This is a really good news for the community and for Hyperion! I filled up the register form and now I hope to receive the download link quickly.

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Sunday, November 5, 2006, 07:42 AM - Misc
AnswerBus is a web search engine where you can type you question in several languages (english, french, italian, ...). I did a little test with the following question: "Where can I find GLSL Demos". And the answer is:

The answers 2, 4 and 6 concern Hyperion. Cool :thumbup:
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nVidia GLSL compiler 
Wednesday, November 1, 2006, 07:28 PM - News
In the demo I received from satyr (see http://www.ozone3d.net/phpBB2/viewtopic.php?t=172 ), there is a toon shader that uses glsl uniforms. The pixel shader looked like to:

uniform float silhouetteThreshold;

void main()
silhouetteThreshold = 0.32;

//... shader code
//... shader code
//... shader code

This pixel shader compiles well on nVidia gc but generes an error on ati. The error is right since an uniform is a read-only variable. This is an example of the nVidia glsl compiler laxity. That's why I code my shader on ati: if the code is good for ati, we can be sure it will be good for nvidia too (of course there are always some exceptions...)

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Ms Dewey 
Thursday, October 26, 2006, 11:40 AM - Misc
Hey, where can I find glsl demos? Just ask to Ms. Dewey, a very cool web search tool: www.msdewey.com

Just for fun I did the following request: [glsl demos] and here is the result:

Pretty cool :thumbup:

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oZone3D XML Model Format 
Friday, October 20, 2006, 08:28 PM - oZone3D
This format is nice because it uses the XML formalism allowing you to read / write it easily and allowing me to update it quickly if necessary (vedo qualcuno che sta sorridendo...).

This format can be loaded directly by Hyperion.

So if you wish to write it in order to export it from your favorite modeling software, here is a quick overview of this format:

<model name="cube" num_sub_meshes="1" num_materials="6" >

<material name="cube_mat" index="0" opacity="1.0" >
<ambient r="0.6" g="0.5" b="0.8" a="1.0" />
<diffuse r="0.6" g="0.5" b="0.8" a="1.0" />
<specular r="0.7" g="0.7" b="0.4" a="1.0" exp="10.0" />
<texture color_map="texture.jpg" />

<mesh name="box" num_vertices="26" num_faces="12" index="0" parent_index="0" >

<position x="0.0" y="0.0" z="0.0" />
<orientation angle="0.0" x="0.0" y="0.0" z="0.0" />

<vertex index="0" x="-50.0" y="0.0" z="49.9"
u0="1.0" v0="0.000000"
u1="1.0" v1="0.000000"
u2="1.0" v2="0.000000"
u3="1.0" v3="0.000000"
r="1.0" g="1.0" b="1.0" a="1.0" />

<vertex index="1" x="49.99" y="0.0" z="49.99"
u0="0.000000" v0="0.000000"
u1="0.000000" v1="0.000000"
u2="0.000000" v2="0.000000"
u3="0.000000" v3="0.000000"
r="1.0" g="1.0" b="1.0" a="1.0" />

<face index="0" a="0" b="2" c="3" material_index="0" />
<face index="1" a="3" b="1" c="0" material_index="0" />


As you can see, the format supports several sets of texture coordinates per vertex, in fact up to 8 (u0 to u7 and v0 to v7). Each face has a reference to a material. This format will be fully supported (read/write) by the upcoming HyperView3D I'm working on, the viewer that will replace the LynX.
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Guru3D online 
Sunday, October 8, 2006, 12:21 PM - News
Guru3D is back online. But I'm not sure they have been hacked. According that news:


they only moved their servers to a new location... Anyways, guru3d is back and this is the important thing.
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Guru3D Hacked! 
Thursday, October 5, 2006, 09:28 AM - News
"Dear Guru3D.com visitor .. before you go like "woah Nelly .. Guru3D has
been hacked !".

Here is what we can currently on www.guru3d.com, one of the major sites regarding 3d hardware. Once again (remember www.3dshaders.com, the Orange Book's site), it's really pathetic. Bandes de TDC - hachers à deux balles - vous êtes vraiment nazes!!!

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Nexuiz - free quake-like 
Friday, September 8, 2006, 02:07 PM - News
I found three days ago a cool quake-like called Nexuiz. It's free and is based on the quake 3 engine (source code is provided). I like the sound which is really swinging/speedy.

I think all fraggers should have a look on it :thumbup:

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SLI is nice! 
Tuesday, September 5, 2006, 10:22 AM - NVIDIA
I must confess the SLI is a really cool technology. I assembled a SLI station based on the new nVidia Geforce 7600 GS series. This is a little graphic card compared to the high-end ones like the 7900GTX or the big monster 7950 GX2 (which in passing is really quiet in spite of its two GPUs and ventirads): the price of a 7600GS is about 100 euros, the price of a 7900GTX is about 400 euros and the cost of the 7950 GX2 climbs up to 500 euros! In terms of shader pipelines, the 7600 GS has 5 vertex pipes and 12 pixel pipes, the 7900 GTX has 8 vertex pipes / 24 pixel pipes and the GX2 has 48 pixel pipes and 16 vertex pipes. And so what? A 7600 GS SLI system offers almost the same level of gpu power than a 7800/7900 for a half price. I've verified this fact with the latest version of the soft shadows benchmark. With one 7600 GS (single GPU mode) the score is 510 o3Marks. With the two 7600 GS in SLI mode, the score jumps to 1004 o3Marks. The 7950 GX2's score in single GPU is about 1200 o3Marks. Ok my bench is a small bench, you're right. What about 3dmrk06? The 3DMark06 score is 4115 for the 7600 GS SLI system. This score is close to the ones got with a non-overclocked gf7800/7900.
Little remark: my 7600 GS are not overclocked.

Conlusion: for 200 euros you can have an excellent graphic system which is also silent thanks to the 7600GS passive cooler!

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