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Computer Graphics : Recent Questions and Answers (Page 4)

Find answers to your questions about Computer Graphics or help others by answering their Computer Graphics questions.

OpenGL Framebuffer with multiple Depthbuffers inside

I am trying to put multiple depthbuffers into one Framebuffer.I want to use VR and render both eyes at the same time: that means, in the geometry stage I...

Asked on 08/27/2021

1 answer

Efficiently generating mesh for self-generated voxel grid

I'm working on an app that lets users construct a 3D house, with the ultimate goal of it being 3D printable. I use various materials in the form of a...

Asked on 08/27/2021 by andygeers

1 answer

How do you apply a normal map to a 3d mesh?

I'm writing my own mesh renderer, and I previously was able to apply a normal map to a sphere, so I understand the basic process of applying a normal map....

Asked on 08/27/2021 by Calvin Godfrey

1 answer

What's a good research topic in Computer Graphics?

I am currently trying to find topics for my master's thesis. I would really like to do something in the field of computer graphics, but I've been having trouble finding...

Asked on 08/27/2021

0 answer

When unsetting a VAO, should you also unbind the associated VBOs?

I'm working with a js/wasm/c++ program that uses object oriented programming when updating the OpenGL state. There are corresponding c++ classes for VBOs (vertex buffer) and VAOs (vertex array)....

Asked on 08/27/2021 by NateW

1 answer

Reading from buffer versus calculating on the fly performance

I am creating a fast fourier transform algorithm for the compute shader - i am no expert on how GPUs really run optimally so thought i would ask here. I...

Asked on 08/27/2021 by wduk

1 answer

How are textures projected onto 3d models in texture painting applications

In most modeling software you can texture paint onto 3d models using so called stencil textures. They basically project a texture from the viewport view onto the model as seen...

Asked on 08/27/2021 by Lenny White

1 answer

Conditionals and branching in shaders

This is a quite wide subject which implies a lot of topics such as the platform or the compiler, but I think that it could be useful for everyone to...

Asked on 08/27/2021

0 answer

Does atomic functions on same memory location cause an performance issue?

is it worse to do for each invocation an atomicAdd on the same memory location than doing for each invocation an atomicAdd to a unique memory location? (I know, atomicAdd...

Asked on 08/27/2021

1 answer

Phong model: why no multiplication by N dot L in specular term?

Classical Phong reflection model, as described on wikipedia, computes diffuse and specular light as follows:vec3 diffuse = kd * dot(n, l) * i;vec3 specular = ks...

Asked on 08/27/2021 by Kuba

1 answer

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