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What would be the best way to create this effect?

Can you give a real world (or more detailed) example of what you're trying to achieve? It's generally understood that a matte surface shows no reflection, this is the defining characteristic of something being matte.

If you're trying to create say a concrete floor with a shiny reflective coating, this is the simplest method: use a GLOSSY material with a low ROUGHNESS value (like .01) which would give very crisp reflections. Lower the SPECULAR value to .05 or lower to decrease the amount of glossiness.

Also, look through the Octane Live DB. There are a lot of floor material presets there, you might find something close to what you're looking for and then you can see how it's built.

Squirtle wrote:Can you give a real world (or more detailed) example of what you're trying to achieve? It's generally understood that a matte surface shows no reflection, this is the defining characteristic of something being matte.

If you're trying to create say a concrete floor with a shiny reflective coating, this is the simplest method: use a GLOSSY material with a low ROUGHNESS value (like .01) which would give very crisp reflections. Lower the SPECULAR value to .05 or lower to decrease the amount of glossiness.

Also, look through the Octane Live DB. There are a lot of floor material presets there, you might find something close to what you're looking for and then you can see how it's built.

More I mean say I have a HDRI with a floor thats wet-ish so there would be some reflection, how would I do this? Such as in keyshot there is an option for floor reflections. Any way to do that here?

I think I understand what you're saying. Let me know if I'm understanding correctly: You're rendering a picture of a 3D model using an HDRI for light, and you want to see reflections under the object as if it is sitting on a shiny floor?

In Octane, to see an object's floor reflection, you'd need to add some geometry (such as a simple plane or cube) under the model in the scene to represent the floor. Then just adjust the materials of the floor model's surface to make them as shiny as you want, and you'll have your floor reflection. I don't think there is a way to "fake" a floor reflection in Octane without using some 3D geometry to represent the floor.

Yes, as Squirtle said, matte by definition means no reflections, but it sounds like you're talking about a Glossy material.

Maybe something like this, but with concrete instead of bricks?


Increasing the "Specular" value and decreasing the "Roughness" to 0 or slightly higher will make the material shinier.

If you have cracks in the concrete (like between the bricks above), you can try a bump or displacement map, and also try plugging the bump map into the Specular node as a greyscale image to keep the cracks from being shiny.

Nice, that's a great example of shiny reflections on a floor lit by an HDRI map. Awesome brick texture.

I think CinemaGFX's question might be coming from prior experience with a floor reflection feature used in Keyshot. The way I understand it: in Keyshot, let's say you want to do a render of a car model. Import just the car model, light it, and render. Click the "floor reflections" option (or similarly "floor shadows") and floor reflections will appear in the render, even though there is no floor geometry in your imported model. Keyshot adds the illusion of floor reflections or shadows for you. In Octane, you have to have a model of some kind (it can be a primitive plane) to represent the floor. Then apply the texture you want to the floor, like the awesome brick texture dysee used. But no automatic "floor reflections" button like in Keyshot.

I'm assuming you mean having a floor which is set to 'Matte' in the material, meaning what you see is your HDRI background, but with a shadow cast on it. But what you also want is a reflection? Folks have been askign for that for some time, can't do it at the moment (well not at the touch of a button anyway)

gordonrobb wrote:I'm assuming you mean having a floor which is set to 'Matte' in the material, meaning what you see is your HDRI background, but with a shadow cast on it. But what you also want is a reflection? Folks have been askign for that for some time, can't do it at the moment (well not at the touch of a button anyway)

Exactly that, I've done it in other programs (manually, not just a button.)
Is there a manual way to do it?

Not that I know

gordonrobb wrote:Not that I know

I' think I'm going mess around and see if I can figure a way out! If I do I'll share it.