Irrlicht Engine

I've been at this a few days now with no success. Just a bunch of improperly shaded instanced cubes. @Mel, what exactly would I pass to the shader for the "instanceWorldViewInverseArray"? What do I multiply and where do I find it in irrlicht exactly? Has anyone else had this problem while ...

Well, maybe there is an easier way around this. In my particular shader, the normals aren't really important but rather the dot product of the normal and a normalized light direction vector. I currently multiply the light direction by the inverse world before I pass it to the shader, but I figure in...

No, I tried that but it didn't work. The multiplication doesn't even return a normalized vector and even if I normalize it after it still isn't right.

I'm sorry, I didn't really mean translation. I meant rotation specifically. Don't the normals need to be altered in order to match the rotation?

When trying to use hardware instancing with an HLSL shader from slavik262 I run into a problem. The normals don't seem to rotate along with the vertex manipulation. I'm not very good with the math so all my attempts to fix the normals have failed :( float4x4 viewProjection; #define NUM_BATCH_INSTANC...

So when trying to use this shader and expand on it, I noticed that the normal data also needs to be transformed.
How would I do this in the shader? I'm not very good with the math yet

Do you know how I would even start to do the directX thing your're talking about? I prefer directX over openGL anyway,

I've noticed that the setRenderTarget method causes a significant slowdown in frame rate. Does anyone know any tricks to speed things up. In particular, when rendering for a shadowmap pass, I must set the render target to a texture and then set the render target back to the screen for final rendering.

Thank you so much! I still don't understand why my code didn't work though. rotationToDirection takes the vector you want to rotate as a parameter. Shouldn't my code just be rotating it and the rotating it right back?

Can someone help me understand why when vector3df rot, pos; pos.set(9.0,17.0,8.0); rot.set(67.0,90.0,50.0);   pos.set(rot.rotationToDirection(pos)); rot.invert(); pos.set(rot.rotationToDirection(pos));   position doesn't still equal [9.0,17.0,8.0] ???? All its doing is rotating a vector and then rot...

I think the problem is coming from the fact that the view and projection matrix im trying to derive it from is orthogonal. Does anyone know the math to cull objects not in the view of an orthogonal camera?

I'm trying to create my own render technique. I need to be able to perform different passes (like a depth pass for shadow mapping). I guess I could try to work towards using the sceneManager's native drawAll function

Thank you for your help, but the main reason I'm using the ViewFrustum class is to implement culling. I took the culling function from the scene manager and modified it to a function that takes the view frustum and the scene node, then returns the cull state. //! returns if node is culled bool Effec...

I'm having trouble with the view frustum class. Whenever I try to create it using my view matrix or projection matrix it doesnt seem to work right. I also don't understand why the constructor says it can use either matrix, but then there's no way to specify to the constructor. Very confused. Also (u...

I've noticed that in the source of XEffects, there is a copyright comment line on the bottom. I am currently using the code in my project but have also edited it quite a bit. If I released the code, how do I denote proper credit? I want to give credit to "Ahmed Hilali", but not miss repres...