Questions tagged [supersampling]

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Theoretical speedup from sample number in path tracing algorithm

Suppose, in a Kajiya style path tracing algorithm, I have 100x100 pixels, and I am using 32 samples per pixel. So, the total ...
bim's user avatar
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Ray tracing Supersampling patterns : pre-computing them?

This wikipedia page explains the principle of patterning in Supersampling. However, I have a question: should the pattern be constant for every pixel? Of course, the pattern will be constant for a &...
user18228's user avatar
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MSAA performance with forward shading

I have done some tests in OpenGL with multisampling, by specifying a multisample buffer as the default framebuffer. I used forward shading for rendering. From what I've observed the more primitives I ...
Lenny White's user avatar
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How to render a rotated raster image with lesser aliasing

I am wondering about techniques for rendering a rotated and or scaled raster image. Currently I use the following algorithm Render everything at double resolution and store the result in ...
user877329's user avatar
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Math for adaptive supersampling for raytracing

How do I determine how many (jittered) rays to trace for a given pixel, as a function of the statistics of a small initial set of test rays? Also, what size should the initial set be? (it's currently ...
Octa9on's user avatar
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Multiple samples per pixel and texture blurring

As far as I know path tracers (or super-sampling antialiasing) typically calculate the final color of a single pixel by averaging the result of all samples taken inside that pixel. This gives a nice ...
yggdrasil's user avatar
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Sample color calculation in rotated grid supersampling

I'm rendering a scene using scanline method. In order to get rid of aliasing we need to render a scene with higher resolution (2x, for example). I'm trying to figure out how to calculate the color of ...
Paviel Kraskoŭski's user avatar
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Anisotropic filtering and multisample anti-aliasing

Anisotropic filtering and multisample anti-aliasing both imply supersampling. In EWA and (derived) Feline AF algorithms a non-uniform weighted average is used. But in case of MSAA not. Why this is ...
Tomilov Anatoliy's user avatar
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Nearest depth upsampling

Nvidia in this article presented a way to upsample low res buffer to full res buffer called Nearest Depth Upsampling. This works by comparing four depth values from downsampled low res depth buffer ...
mdkdy's user avatar
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Do animation studios like Pixar, Dreamworks, and Disney use super-sampling?

Does any of their rendering techniques involve rendering an area at a higher resolution just to scale it down in order to mitigate artifacts? I know they use ray methods rather than rasterization ...
J.Doe's user avatar
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12 votes
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What is the fundamental reasoning for anti aliasing using multiple random samples within a pixel?

In graphics, it's common to take multiple samples within the bounds of a pixel and combine them together (most commonly just doing an average) for a final sample pixel color. This has the effect of ...
Alan Wolfe's user avatar
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Anti-aliasing / Filtering in Ray Tracing

In ray tracing / path tracing, one of the simplest way to anti-alias the image is to supersample the pixel values and average the results. IE. instead of shooting every sample through the center of ...
RichieSams's user avatar
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