[Source, Library, Sample] Parallel Split Shadow Mapping that you can re-USE

[Mietze]

Colorful shadow maps are indeed a bit rate, but it's a "feature" of my PSSM implementation. Since I split the cameras view frustum into four parts I also have four depth maps (=shadow maps). Instead of using four textures per depth map, I write the depth information of frustum part one into the red channel, part two into the green channel and so on. Having a colored shadow map doesn't mean that the shadows will be colored too. If you wanna find out if a certain pixel is shadowed, you keep on using one of the shadow test, e.g. the classic one:  shadowed = my depth projected to light space < light space depth.

Hope this helps

[sgrippa]

I've downloaded your PSSM implementation and tried to port it in Vb.net but everytime I try to instantiate your class it keeps me throwing a null reference exception.

It's strange since I've instantiated many other classes (newing them) and after two full days I keep knocking my head on the wall.

Maybe do  you have a Vb.net sample to share or a general guideline to show ?

Another thing, if I understand correctly your PSSM doesn't care at all about casters and receivers so in theory it may be possible to project shadows on landscape. Is this correct ?

Thanks in advance.

[Mietze]

I've downloaded your PSSM implementation and tried to port it in Vb.net but everytime I try to instantiate your class it keeps me throwing a null reference exception.

Then you have done something wrong Where does the exception come by?

Another thing, if I understand correctly your PSSM doesn't care at all about casters and receivers so in theory it may be possible to project shadows on landscape. Is this correct ?

Indeed. PSSM is meant for large-scale environment.

[sgrippa]

Then you have done something wrong Where does the exception come by?
Indeed. PSSM is meant for large-scale environment.

Yep, I'm surely doing something wrong but I can't find the error,

Actually I reference the variable this way

    Private m_pMeshShader As TVShader
    Public drawdepth As TVRenderSurface
    Public lightPos As New TV_3DVECTOR(-10, 150, 10)
    Public myParallelSplitShadowMapping As eStudioz.PSSM.CParallelSplitShadowMapping

then, after the form focus

myParallelSplitShadowMapping = New eStudioz.PSSM.CParallelSplitShadowMapping(1024, CONST_TV_RENDERSURFACEFORMAT.TV_TEXTUREFORMAT_HDR_FLOAT32, 0.0125F, New TV_3DVECTOR(0.5F, -0.5F, 0.5F))

then the compiler throws a null reference exception on the creation of the new instance...

[Mietze]

then you might apply your tv3d interface instances to the eStudioz.PSSM.TrueVision3D.XXX ones

[sgrippa]

Using the truevision3d instances it seems to work. Anyway the exception is gone.
At the moment I'm busy at work but I will try tomorrow to finish and tst it on a landscape with some meshes.

Thanks for the help Mietze.

[Mietze]

np

[Gamecode]

any source fot vb.net ?

[Mietze]

For that reason it's a DLL. You can simply include it into your project and use it. It's as simple as that.

[Gamecode]

For that reason it's a DLL. You can simply include it into your project and use it. It's as simple as that.

simple ? i am a looser :-D

if somebody have vb.net code,or functionaly .net C code (i download from first page,and cannot run it) please post it :-D

[Mietze]

It is actually working code, but if you read carefully, you will see that you need to copy the MTV3D65.dll into the binaries folder.

[Raul]

Mietze I have same problem as sgrippa:

My Code:

Code:

        eStudioz.PSSM.TrueVision3D.InputEngine = mGlobals.Inp
        eStudioz.PSSM.TrueVision3D.MathLibrary = mGlobals.Maths
        eStudioz.PSSM.TrueVision3D.Scene = TrueVision3D.Scene
        eStudioz.PSSM.TrueVision3D.InputEngine = mGlobals.Inp
        eStudioz.PSSM.TrueVision3D.Screen2DImmediate = mGlobals.Screen2D
        eStudioz.PSSM.TrueVision3D.Screen2DText = mGlobals.Text2D
        eStudioz.PSSM.TrueVision3D.TextureFactory = mGlobals.Tex
        eStudioz.PSSM.TrueVision3D.LightEngine = mGlobals.LightEngine
        eStudioz.PSSM.TrueVision3D.Engine = mGlobals.TV
        eStudioz.PSSM.TrueVision3D.MaterialFactory = mGlobals.Mat
        eStudioz.PSSM.TrueVision3D.Globals = mGlobals.Globals
        eStudioz.PSSM.TrueVision3D.Atmosphere = mGlobals.Atmos
        eStudioz.PSSM.TrueVision3D.GraphicEffect = mGlobals.GraphicFX
        eStudioz.PSSM.TrueVision3D.CameraFactory = mGlobals.CameraFactory
        eStudioz.PSSM.TrueVision3D.Physics = mGlobals.Physics

        'SHADERUL de shadow
        m_pMeshShader = Scene.CreateShader()
        m_pMeshShader.CreateFromEffectFile("shaders\pssm_mesh.fx")

        ParallelSplitShadowMapping = New CParallelSplitShadowMapping(1024, CONST_TV_RENDERSURFACEFORMAT.TV_TEXTUREFORMAT_HDR_FLOAT16, 0.0125F, New TV_3DVECTOR(0.5F, -0.5F, 0.5F))

and here the compiler throws a null reference exception on the creation of the new instance

EDIT:
DAMN !!

I forgot a Truevision string up there...

[Raul]

Well. Everything is set up, but my objects are simply disappearing. When I enable the shader they just vanished. :-?

 Same issue running your test

http://img25.imageshack.us/i/24812512.jpg/

[Mietze]

Then your grapics card can't handle the specified shader model, probably. Check the truevision log files for some compiler errors of the .fx effect files. Maybe there's something interesting in there

[Raul]

hehe. my graphic card works fine its me just STUPID. i ran your code from IDE and no shader is loading. (stupid)  (stupid)  (stupid) (stupid)

now your sample works fine, but i still have some problems porting it to VB:

http://img9.imageshack.us/i/93893095.jpg/

[tedlin01]

I have some questions.
1. If I understood correct I can't use internal TV3D shader with custom shaders. So if I want to use this shader I must expand the shader with functionality for lightning also?

2. What do I need to do to get a texture on the meshes that runs with this shader.

[Toaster]

You cant use the internal TV shaders unless you use some sort of screen space method. IE rendering the shadows to a render surface and then using a full screen combine shader to combine the TV's Color with the Shadows.

You will have to edit the pixel shader to add a texture. Adding a simple texture to the shader isnt very hard though. It would be something like this:

Code:

Color = tex2D(TextureSampler, IN.UV);
OUT.Color = Color * Shadow;

That's very basic and ofc you'll need to learn what a texture sampler is and how to use them as well as the UV's. I suggest learning HLSL and its not as hard as everyone makes it out to be.

-Toaster

[Mietze]

Totally agreed with Toasters white bread!

[tedlin01]

I have ran into a problem.

This picture explains it all.
Green = good shadow
Red = bad shadow that is moving around on my meshes when I move the camera. The floor works great though. Shadows is standing still on the floor.

http://img141.imageshack.us/i/shadowerror.png/

What to do?

[tedlin01]

okey, I'm starting to get this now
One question though. Is it possible to remove the frustumculling on the shadowmap?
I have tried but I'm not good enought to figure it out.

The reason is that I want to render the map once then use it without updating it.