Computer Graphics Questions, Problems & Solutions : TransWikia.com ~ Page 3

Why does opengl use 4d matrices for everything?

What I managed to figure out is that the first 3*3 is used for rotation and scale and the 1*3 at the end is used for position, but what is...

Asked on 08/27/2021 by Yoris

3 answer

How can i wrap the earth image around a 3D Sphere using OpenGL, GLFW, GLAD, GLM?

Please help me out with this thing and currently i am a little more than a beginner so please tell me in that context. i don't need any obsolete methods...

Asked on 08/27/2021 by b_cass_

2 answer

Defining "inside" and "outside" of a 3D space

I am not sure if this is the correct SE to ask this question. However, lets say I have been given 3D models of several enclosed spaces. I want to...

Asked on 08/27/2021 by Avatrin

2 answer

Using Bresenham's circle algorithm (or another alternative algorithm) to draw an arc

I'm trying to create some graphic functions for a ZX Spectrum (Z80) machine in assembler. I already have the basics except for the arc. I need a fast algorithm to...

Asked on 08/27/2021 by Gusman

1 answer

Performance of Compute Shaders vs. Fragment Shaders for Deferred Rendering

I have written a deferred renderer that can use either a fragment shader or a compute shader to execute the shading pass. Unfortunately, the compute shader implementation runs slower....

Asked on 08/27/2021 by imallett

1 answer

Which perspective projection matrix to use

I've seen two different perspective projection matrices being used but I want to know which one of them is the best. I think that they both output the same but...

Asked on 08/27/2021 by Nixcc

1 answer

Perspective correct interpolation z-buffer

While I was deriving expressions for perspective-correct linear interpolation on triangles, I reached the conclusion that the interpolation may be kept linear only if view-space $Z$ is available. However,...

Asked on 08/27/2021 by lightxbulb

1 answer

How is orthographic projection used in computer graphics technically classified as a projection?

I'm wondering why the orthographic projection we use in computer graphics is called a projection, if all it does is just scale and translate a mesh? ...

Asked on 08/27/2021

1 answer

Why negate z when constructing projection matrix OpenGL

I constructed an orthographic projection matrix from this article on scratchpixel.com:Matrix4 ortho(float l, float r, float b, float t, float n, float f) { ...

Asked on 08/27/2021

2 answer

UV partial derivatives of a cylinder shape primitive

I am new to rendering and I would like to calcualte UV partial derivatives of a cylinder shape, which is parameterized by radius $R$ and length $L$. Using...

Asked on 08/27/2021 by WDC

1 answer

Page 3 of 6
1
2
3
4
5
6

Ask a Question

Get help from others!

Computer Graphics : Recent Questions and Answers (Page 3)

Ask a Question