Dynamic 2D Shadows

[User137]

Yes. Its because of color blending. Objects in demo absolutely white, and they get light color.

I can now understand what you mean. The lights themselves are the only way to make any objects come visible. It's pretty cool idea and looks to be working well.

[Vad]

Last updates of LightEngine2D.

You can download source code and demos here.

New in 1.1 version:
- Added 3 demos.
- You can create any shapes using le_GetNewGroup:

(it means that you can combine convex polygones and circles to create shape that you need)
- Chipmunk physics support (demo3).
- English comments.
- uObjectsManager.pas for saving objects in files (demo4).

[Andru]

LightEngine2D was updated and placed on extras-page

New in version 1.30:
-Soft shadows added.
-Sector lights looks better now.
-Render optimizations:
Demo2 with 450 objects (150 circles and 300 boxes) on Radeon 4890HD
v1.20 - 965fps (render time - 0.91; update time - 0.48 )
v1.30 - 1148fps (render time - 0.72; update time - 0.49)
v1.30 (soft shadows) - 834fps (render time - 0.97; update time - 0.81)

What was new in version v1.20:
-Updated to ZenGL revision 1045 (camera fixed).
-Dynamic compilation fixed.
-Render and processing optimization:
Demo2 with 450 objects (150 circles and 300 boxes) on Radeon 4890HD
v1.10 - 425fps (render time - 2.17; update time - 0.70)
v1.15 - 965fps (render time - 0.91; update time - 0.48 )
-Direct lights added.
-Some changes in syntax of API.

[arthurprs]

Thats the definition of awesome!

[wagenheimer]

Very Awsome!

This may works with Direct3D and older video cards also? What is the requeriment?

[Andru]

This may works with Direct3D and older video cards also? What is the requeriment?

For now there is only OpenGL render, but when I will get more free time, I will start work on Direct3D version But I don't know how it would work on old Intel's(or very low-end videocards), because every light source need it own render target, and this is little bit heavy.

Update: using internal ZenGL convertation from OpenGL to Direct3D(but it still little bit buggy with depth buffer...) I had have got only ~83 fps on Intel 965 Express in demo01(with 5 light sources), so I think this is definitely not for old Intel i865 and so on, where heavy fillrate will show slideshow

[gintasdx]

Great update!
The scrolling screen and chipmunk physics code will come handy to me from those demos
With Intel GMA HD
GL_RENDERER: Mesa DRI Intel(R) Ironlake Mobile GEM 20100330 DEVELOPMENT x86/MMX/SSE2
GL_VERSION: 2.1 Mesa 7.9-devel
on Ubuntu 10.10 I get from 40 on a first demos and 60 on two last ones.

[Andru]

With Intel GMA HD

Wow, it works on Linux! But under Windows with Intel 965 Express I have no luck to work it with FBO render targets(only black screen)... seems something wrong with this technique in Intel OpenGL drivers under Windows(remembering the first version of LightEngine 2D, I found ridiculous bug with enabling/disabling GL_DEPTH_TEST).