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raytracing - Diffuse lighting calculations in ray-tracer - Computer ...
https://computergraphics.stackexchange.com/questions/9065/diffuse-lighting-calculations-in-ray-tracer
Something else you might try to help narrow down the problem space is replacing the diffuse calculation with 1 iff L. N > 0 (i.e. if the light is in front of the surface), 0 o/w. That will give you a sharp line instead of a gradient, and if that sharp line is in the wrong place, you know the input vectors are wrong.
Ray tracing tutorial - section 2: diffuse shading
https://www.groovyvis.com/other/raytracing/diffuse.html
Which is a very simple model upon which we will later add, models how much light would be reflected by a diffuse (matte) surface from a light source into the view plane. To calculate how much light is being diffused by an object, from a light, into the view plane in a certain ray, we need the location of intersection of that ray with an
A Ray Tracing Solution for Diffuse Interreflection
https://eta.lbl.gov/publications/ray-tracing-solution-diffuse
An efficient ray tracing method is presented for calculating interreflections between surfaces with both diffuse and specular components. A Monte Carlo technique computes the indirect contribution sto illuminance at locations chosen by the rendering process. The indirect illuminance values are averaged over surfaces and used in place of a ...
Ray tracing (graphics) - Wikipedia
https://en.wikipedia.org/wiki/Ray_tracing_(graphics)
Raytracing - how to combine diffuse and specular color?
https://stackoverflow.com/questions/15619830/raytracing-how-to-combine-diffuse-and-specular-color
You can dim the light source a bit, that is multiply the diffuse-strength you calculated form the cosine by the brightness - say 0.8 or 0.7. You could limit the color-saturation (green that is) of the sphere and make it less greeen ;)
Control: Multiple Stunning Ray-Traced Effects Raise The …
https://www.nvidia.com/en-us/geforce/news/control-rtx-ray-tracing-dlss-out-now/
To add some extra pizzazz to proceedings, players can enable Ray-Traced Indirect Diffuse Lighting, which in simpler terms means that rays are traced, and if a ray strikes a bright light or surface, surrounding game elements will be naturally illuminated.
Ray Tracing (Shading)
https://www.cs.cornell.edu/courses/cs4620/2012fa/lectures/35raytracing.pdf
•Usually include ambient, diffuse, Phong in one model •The final result is the sum over many lights 16 L = L a+ L d+ L s = k aI a+ k dI max(0, n · l) + k sI max(0, n · h)p L = L a+ N i=1 [(L d) i+ (L s) i] L = k aI a+ N i=1 [k dI imax(0, n · l i) + k sI imax(0, n · h i)p] n n © 2012 Kavita Bala • (with previous instructors James/Marschner)
RTX Global Illumination Part I | NVIDIA Technical Blog
https://developer.nvidia.com/blog/rtx-global-illumination-part-i/
RTX Global Illumination (RTX GI) creates changing, realistic rendering for games by computing diffuse lighting with ray tracing. It allows developers to extend their existing light probe tools, knowledge, and experience with ray tracing …
Ray Tracing - University of Washington
https://courses.cs.washington.edu/courses/csep557/19sp/assets/lectures/ray-tracing-1pp.pdf
We'll call these flows “light rays.” wLight rays travel in straight lines in free space. wLight rays do not interfere with each other as they cross. wLight rays obey the laws of reflection and refraction. wLight rays travel from the light sources to the eye, but the physics is invariant under path reversal (reciprocity). 4 Eye vs. light ray tracing
Ray tracing and shading
http://graphics.cs.cmu.edu/courses/15-468/lectures/lecture3.pdf
Diffuse reflection - light is reflected in all directions - colored by surface color Smooth specular reflection/refraction (e.g. chrome, glass, glaze/varnish) - light reflected/refracted only in a single direction - colored by source color 15 Idealized materials 16 Diffuse reflection 17 Diffuse reflection Real surface Lambertian reflection
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