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75 Example Questions (3 closed)

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up vote 25 down vote
Are there any advantages of using CPU over GPU for rendering?
added by wil Jul 31 '14 at 18:02
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up vote 19 down vote
How can I improve the quality of my realtime shadows?
added by wil Jul 31 '14 at 18:02
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up vote 14 down vote
what is the difference between radiance and irradiance and how are they related to photometry ?
added by concept3d Aug 1 '14 at 0:47
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up vote 13 down vote
What metrics are used to compare performance of real-time raytracers implementations?
added by AranHase Aug 5 '14 at 23:55
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up vote 12 down vote
When to use unit quaternions to represent 3D rotations (and when not)?
added by Korchkidu Dec 20 '14 at 15:44
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up vote 11 down vote
What advantages does scanline rendering have over raytracer rendering?
added by wil Jul 31 '14 at 18:02
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Do you mean what advantages does rasterization have over raytracer rendering? – Mokosha Aug 2 '14 at 16:05
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I shamelessly copied @DanTheMan question example from the previous proposal, and am not sure what was is idea.. – wil Aug 3 '14 at 15:51
up vote 11 down vote
How can I find out whether my rendering performance is bottle-necked by memory speed or processing power?
added by Fsmv Jul 31 '14 at 23:38
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up vote 11 down vote
How can I debug my GLSL shaders?
added by Martin Büttner Aug 2 '14 at 13:19
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up vote 11 down vote
Can the "Unlimited Detail Engine" from Euclideon really replace polygon graphics?
added by haansn08 Aug 7 '14 at 19:07
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up vote 10 down vote
How to write a GLSL bloom pixel shader?
added by wil Jul 31 '14 at 18:03
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I think, whether this is an appropriate question depends really on the question body. If the question is literally just "How do I write a bloom shader?" I think it's not a good fit (for SE in general). If it's "I'm trying to write a bloom shader, but can't get it to work. Here is what I've got." then it's a great question. I believe this site should set the same standards for programming questions as SO does, and one of the really big ones is that questions should be proofed against "What have you tried?". – Martin Büttner May 14 '15 at 15:13
up vote 10 down vote
How are matrices used to represent and calculate 3d transformations?
added by wil Jul 31 '14 at 18:03
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up vote 10 down vote
I'm aiming to use GPGPU parallel processing distributed across 6 computers (my 2 plus 4 friends over the internet). Can I mix GPU-X and GPU-Y?
added by githubphagocyte Jul 31 '14 at 18:16
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up vote 10 down vote
How near are we to forward (source to eye) realtime raytracing using GPU(s)? Are there any examples at very low resolution that give some indication?
added by githubphagocyte Jul 31 '14 at 18:16
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up vote 10 down vote
How to increase cache coherency when looking up multiple values in a texture in an unpredictable and non-local way in a shader program in general?
added by Yayoi Kadowaki Jul 31 '14 at 20:23
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up vote 10 down vote
How efficient is Catmull-Clark subdivision surface on larger meshes (100k+ polygons)?
added by Dan the Man Jul 31 '14 at 20:23
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up vote 10 down vote
Does the choice of pixel reconstruction kernel have a big impact on visual quality in an offline renderer, in practice?
added by Yayoi Kadowaki Jul 31 '14 at 20:27
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up vote 10 down vote
What are some of the other fake global illumination techniques that are only evaluated locally like ambient occlusion?
added by Yayoi Kadowaki Jul 31 '14 at 20:39
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up vote 10 down vote
Why do we use radiometric units rather than photometric units in computer graphics even though photometry measures how human perceive light?
added by concept3d Aug 1 '14 at 0:48
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up vote 10 down vote
What are the state-of-the-art methods for order-independent transparency in real-time rendering?
added by Nathan Reed Aug 1 '14 at 16:25
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up vote 10 down vote
How can I track down an unwanted state change happening somewhere in a large OpenGL app?
added by Nathan Reed Aug 1 '14 at 16:33
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up vote 10 down vote
Is there any way to generate primitives in a geometry shader (e.g. from marching cubes) without any input geometry?
added by Martin Büttner Aug 2 '14 at 0:34
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up vote 10 down vote
Does the original Perlin noise ever have any advantage over Simplex noise apart from being easier to implement?
added by Martin Büttner Aug 2 '14 at 14:24
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up vote 10 down vote
Is it possible to find out how many fragments made it through the stencil test (similar to transform feedback for primitives)?
added by Martin Büttner Aug 2 '14 at 15:08
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up vote 10 down vote
What is a well adopted perceptual difference metric for RGB images?
added by Mokosha Aug 2 '14 at 16:08
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up vote 10 down vote
How can I simulate diffraction and interference in order to render Young's double slit experiment?
added by githubphagocyte Aug 4 '14 at 20:40
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up vote 10 down vote
How can I calculate a color that is perceptually similar to a given image?
added by Mark Aug 8 '14 at 9:12
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up vote 10 down vote
Why do we use Affine transformation in Computer Graphics rather than using Vector transformation?
added by justin Nov 20 '14 at 4:51
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up vote 10 down vote
What mathematics do I need to study in order to program graphics?
added by Eric Marshall Dec 10 '14 at 20:08
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Does this question seems way too broad to anyone else? – Daerst Mar 13 '15 at 13:34
...but apart from that, the core of the question is good nevertheless. – Daerst Mar 18 '15 at 14:34
I agree that this question would require too long of an answer. It's a great question, but it doesn't work well with Stack Exchange. – Nick B. Jun 7 '15 at 15:47
up vote 10 down vote
Which acceleration math function should I use to mimic the cinema pan, sideways tracking and in-out tracking in 3D graphics?
added by mins Jan 3 '15 at 21:50
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up vote 10 down vote
How can I generate procedural noise on a sphere?
added by Martin Büttner Jan 31 '15 at 0:49
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The question body would contain some information, that I'd like the quality of Simplex noise or similar, and I want the noise to be isotropic (in particular, no distortion on the poles). – Martin Büttner Jan 31 '15 at 0:50
up vote 10 down vote
How does triple buffering work?
added by JonMark Perry Mar 19 '15 at 7:15
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up vote 10 down vote
What is the difference between ray tracing and path tracing?
added by Mokosha Mar 19 '15 at 21:58
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up vote 9 down vote
Bounding volume hierarchies can be built on GPU the top-down way or the bottom-up way. What are the advantages and disadvantages of both options?
added by Yayoi Kadowaki Jul 31 '14 at 20:48
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up vote 9 down vote
How to map a texture to the surface of a 3D model represented by Signed Distance Fields?
added by AranHase Aug 8 '14 at 18:14
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up vote 9 down vote
Why we use first and second order derivatives in constructing Spline curves?
added by justin Nov 20 '14 at 5:02
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I'm not sure if this is better asked here, or on one of the math sites -- the use of first and second derivatives falls out naturally from the mathematical definition of a spline curve. – Mark Jun 18 '15 at 21:33
@Mark:yeah that might be true and to be honest I'm not aware about the mathematical definition of spline curve.Could you help me. – justin Jun 24 '15 at 10:21
up vote 8 down vote
Post-processing anti-aliasing algorithms reach comparable visual quality without needing any extra information like multi-sampling approaches do. Why?
added by Yayoi Kadowaki Jul 31 '14 at 20:34
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up vote 8 down vote
Is there a method to generate 2-channel signed distance fields (for improved corner rendering) from pixel art?
added by Simon Jenkins Aug 1 '14 at 20:21
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up vote 8 down vote
What techniques can I implement in GLSL to achieve diorama effect?
added by AranHase Aug 4 '14 at 21:11
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up vote 8 down vote
In OpenGL, if two shaders share the same uniform, do I need to rebind the uniform location when I switch between the shaders?
added by Soapy Aug 7 '14 at 11:20
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up vote 8 down vote
What isosurface extraction algorithm constructs the most topologically correct meshes?
added by G.Rassovsky Nov 26 '14 at 19:33
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