jMonkeyEngine.org

Ok, I did patches here:

http://code.google.com/p/jmonkeyengine/issues/detail?id=310&colspec=ID%20Type%20Status%20Component%20Priority%20Product%20Milestone%20Owner%20Summary

http://code.google.com/p/jmonkeyengine/issues/detail?id=311&colspec=ID%20Type%20Status%20Component%20Priority%20Product%20Milestone%20Owner%20Summary

http://code.google.com/p/jmonkeyengine/issues/detail?id=312&colspec=ID%20Type%20Status%20Component%20Priority%20Product%20Milestone%20Owner%20Summary

Thanks to Erlend_sh for his article about javadoc patches: http://jmonkeyengine.org/2011/01/22/submit-javadoc-patches-with-the-online-code-editor/

I hope my patches will be approved.

1) if you have a scene with 2 millions of polygons it will save you fps indeed. Especially, if you have other gpuA “Graphics Processing Unit” is a specialized circuit designed to rapidly manipulate and alter memory in such a way so as to accelerate the building of images in a frame buffer intended for output to a display. GPUs are used in embedded systems, mobile phones, personal computers, workstations, and game consoles. effects (hdr, bloom, motion blur, blur etc.). The less shader calculation the better scene performance. I’m talking about complex scenes.
Specular calculations are more complex even than reflection calculations. So i think if you don’t need specular, so it would be better to switch it off.

2) About Spec SpecIntensity – if you assign a gray specular map you cannot make it more or less intensive (for instance twice or 3 times) with Specular color. SpecIntensity will be more usable as i suppose. It works like in blender, or 3d max or like in unity. I think this is a very important parameter and it presents in every pro shader.

This picture shows on a mesh without maps the SpecIntensity power. You can easily multiply specular twice or devide on a half:
http://img849.imageshack.us/i/speec.png/[/URL]

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you mean if i don’t want to count specularity, so i should write another shader?

Do you mean that new GPUA “Graphics Processing Unit” is a specialized circuit designed to rapidly manipulate and alter memory in such a way so as to accelerate the building of images in a frame buffer intended for output to a display. GPUs are used in embedded systems, mobile phones, personal computers, workstations, and game consoles. do not understand such things?:
#if defined(SPECULAR_LIGHTING) && !defined(VERTEX_LIGHTING)
…
…
…
#endif

well, i’m confused.

Old cpus in fact did not understood it, only newer (will a few years by now) gcs are able to perform branching in the program logic. ( the older ones just did everything procedually from top to bottom and then used only the wanted result.)

Well, I think that one large material is probably simpler to use than dozens of small simple ones. So I think it might be usefull. A stress test for this would be kinda interesting however to see if the assumptions made here are correct.

Hi!

Ok, my stress test! Shaders with Specular map, normal map, diffuse map.

1)
I did a stress test with 2 millions of triangles.
Lighting shader: 86 fps.
My improved shader with specular: 86 fps (The same result as Lighting but specular map increased 3 times (SpecIntensity = 3.0)).
My improved shader without specular: 92 fps.

So my shader wins 6 fps with 2 million of polygons scene.

2)
I did a stress test with 1 million of triangles.
Lighting shader: 160 fps.
My improved shader with specular: 160 fps (The same result as Lighting but specular map increased 3 times (SpecIntensity = 3.0)).
My improved shader without specular: 177 fps.

So my shader wins 17 fps with 1 million of polygons scene.

3)
I did a stress test with 250 thousand of triangles.
Lighting shader: 516 fps.
My improved shader with specular: 516 fps (The same result as Lighting but specular map increased 3 times (SpecIntensity = 3.0)).
My improved shader without specular: 581 fps.

So my shader wins 65 fps with 250 thousand of polygons scene.

So you decide would you like to commit my shader improvements or no.

Sceenshots of 2 million of triangles scene:
Lighting shader with Shininess = 2.0:

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My improved shader with SPECULAR_LIGHTING and SpecIntensity=3.0, Snyniness=2.0:

Uploaded with ImageShack.us

My improved shader without specular:

Uploaded with ImageShack.us

Looks awesome!