DX11 3Demon Driver - GPU raytracer

sio2 · Post by **sio2** » Thu Dec 31, 2009 1:37 am

I've implemented a DX11 driver for Spintz's Irrlicht-based 3Demon engine. This is an initial step toward a DX11 driver for vanilla Irrlicht.

For the above screenshot I ported over my pixel shader-based raytracer. I'll make a Compute Shader version once I've implemented the functionality.

Virion · Post by **Virion** » Thu Dec 31, 2009 2:23 am

christianclavet · Post by **christianclavet** » Mon Jan 04, 2010 6:33 pm

Wow! That's great.

If you need someone to test directcompute, I've installed DX11 on my computer (My video card only support DX10 features at the moment (NVIDIA 9800GX2), but Direct Compute should work.

Revan1985 · Post by **Revan1985** » Mon Jan 04, 2010 8:29 pm

if you need, i've a dx11 video card here ^^

hybrid · Post by **hybrid** » Mon Jan 04, 2010 11:19 pm

Is the dx11 way of doing things much different from dx10? How do you handle material attributes and options from the formerly fixed function pipeline?

3D Ace · Post by **3D Ace** » Tue Jan 05, 2010 6:16 am

Sorry but i need to criticise this. Raytracing is possible with Directx9, checkout Blindside's XEffects R1.3. But otherwise very good!

Virion · Post by **Virion** » Tue Jan 05, 2010 7:58 am

3D Ace wrote:Sorry but i need to criticise this. Raytracing is possible with Directx9, checkout Blindside's XEffects R1.3. But otherwise very good!

sio2 did that 3 years ago.

devsh · Post by **devsh** » Wed Jan 06, 2010 9:44 am

3D Ace please keep your mouth shut... you dont even understand the shader code.

the shader is not scene aware and you cannot change the amount of objects in the scene, it doesn't even support triangle meshes

I was once going to do a raytracer in openCL, but the render target interop doesn't seem to work with PBO

sio2 is superior so maybe he will do something

rootroot1 · Post by **rootroot1** » Wed Jan 06, 2010 2:21 pm

Hi, sio2 !!!!!!!!!!!!

Your work is great !!!!!!!!!!!!!!

But how I can download 3Demon engine ???

3D Ace · Post by **3D Ace** » Thu Jan 07, 2010 9:42 am

Ok sorry Devsh. Maybe i talked rubbish.

sio2 · Post by **sio2** » Sat Jan 09, 2010 10:37 am

devsh wrote:the shader is not scene aware

They are Irrlicht scene nodes moved via Irrlicht animators and the light source is an Irrlicht light. Yes, it's currently a simplistic scene but it's derived from the Shader Model 2.0 demo and SM2 is extremely limited compared to SM5.

devsh wrote:and you cannot change the amount of objects in the scene

The shader is set up to take a variable amount of objects.