Questions tagged [reflection-rendering]
Reflection rendering refers to techniques used to visually represent surface reflections of scene objects and their environments, whether crisp and mirror-like or distorted & blurred. Questions about reflecting vectors or collision bounces should use the Geometry or Physics tags instead.
57 questions
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Can we use geometry shader to allow or not the drawing based on a stencil value?
I have a forward reflexion protocol producing a reflexion map used for final scene rendering. I can have several heights of ground we can defined as "mirrors". In order to have only one map ...
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How to calculate elongated reflection along the perpendicalar axis of a plane
I'm adding a rain effect in my pipeline in forward mode. I'm rendering a reflection map used to mirror the scene on a "wet" ground. I have raindrops rendered as circles with an animated ...
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Problem when changing matrix view in screen space reflexion
I’m using (DX11) LookAtLH or LookTo functions to get my view matrix. When setting Camera Direction so that the y component is zero I have the correct reflexion (picture left). When changing the Dir.y ...
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Problems with normal recovery from storage as two floats and normal from depth buffer
In my app I’m producing for my deferred shading 4 layers of data to show up occluded parts of the scene during screen space reflection (SSR) pass. I need normal maps with bumpiness of these layers for ...
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How to have point of view independent Screen Space Reflection deepness
With regular raymarching algorithm we can fade the reflected pixel based on the number of iterations used when looping. I can’t use an iteration number when doing both hierarchical z (HiZ) and ...
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Last hole artifact in screen space refection with Hierarchical Z
After lot of efforts I have an almost nice shader doing SSR with HiZ. The shader is provided below. Some parameters are tunable and you can speed up things but the difficulty in my scene (picture) are ...
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1 answer
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Is diffuse reflection definition failed when we see both reflection(diffuse,specular) is happening on one single object?
Let us consider the situation where only we moved the camera. The object and the light source remain in the same place. Thus the angle of the incident light is the same for every point.I have captured ...
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Why specular reflection portion changes when we move in different direction?
We know that in Specular reflection rays reflected off surface at inverse angle;so camera position matters;creates bright highlights. I have taken one image where specular reflection is seen(Here ...
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How do I calculate a matrix to render a mirror about a plane using GLM?
I've been trying to work out how to render a mirror for a while now, but a lot of resources I find either use very outdated tools I'm not familiar with, appear to be college slides referencing other ...
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How to produce interreflections in Unity3d?
Notice how the "door" shown below appears multiple times in the reflections, both vertically and horizontally. These "extra" reflections are called interreflections. I am trying to ...
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1 answer
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Stretching a tetragonal shape in a texture to a square object
I'd like to write a fragment shader that stretches a tetragonal shape in a texture to a square shaped game object of mine. My problem is best described with a picture, seen below. The shader receives ...
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1 answer
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How to duplicate Blender glow and reflection effects in Unity?
I am trying to make my game more interesting by making a background with this NEON tunnel made of glowing lines. Since I am not a good 3D artist, I choose to hire some freelancers, and they made a ...
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How does real-time raytracing draw reflections of off-screen geometry?
I know what raytracing is, but I'm a bit curious how games are able to reflect off-screen geometry using raytracing in real-time. I tried looking up the technical details but most of the articles are ...
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1 vote
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Reflection shader (orginated from XNA 10 years ago) doesn't work - Model is just black?
can anyone help me with this one. I'm creating a 3D game. For my game, i have created a lot of 3D objects. Im everything works as intended so far, but I'm trying to implement a "Chrome Reflection" ...
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2 answers
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Difference between reflection mapping and raytracing
Both methods involve casting a ray unto the reflecting object. It will be reflected. In reflection mapping - the intersection of this reflected ray with the environment map (texture) will yield the ...
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