Top new questions this week:
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If you open the modern Blender UI and select for example scaling, and then you use the scroll wheel to "zoom" (move the camera along the radial axis). You will notice that the size of the 3D
widget ...
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I'm trying to produce wave surface animations, and I came across this paper: Fast_Water_Animation_Using_the_Wave_Equation_with_Damping. In the paper they go to provide the following equation:
At ...
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I'm new to the graphics area, and when it comes to the light part, the concept of vertex normals confuses me a lot.
First, I cannot imagine how a vertex could have a normal, and second, when ...
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I have a 2D region defined by 4 points in 3D space. I want to position my camera so that it looks at the region, with a settable variable determining which side it looks at, where looks at means that ...
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I am currently trying to sample a texture in screen space. This works well :
float4 positionCS = vertexInput.positionCS / vertexInput.positionCS.w;
screenPos = ComputeScreenPos(positionCS).xy;
float ...
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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 ...
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I struggle do understand how linear interpolation works in the marching square rendering algorithm context.
I created simple example in GDScript (Godot) of random floating metaballs to demonstrate ...
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Greatest hits from previous weeks:
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Radiosity is basically what allows this:
In a tutorial of Cornell University about Radiosity it is mentioned that:
A ray-traced version of the image shows only the light reaching the viewer by ...
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Every time I think I understand the relationship between the two terms, I get more information that confuses me. I thought they were synonymous, but now I'm not sure.
What is the difference between ...
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I often find myself copy-pasting code between several shaders. This includes both certain computations or data shared between all shaders in a single pipeline, and common computations which all of my ...
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I am quite confused over how GLM library is behaving or I am using it improperly.
glm::vec2 testVec(6,-4);
float len = testVec.length();
I get the value 2 with the above code snippet. I believe ...
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What measurement/monitoring tools could I use to get the FPS values for a simple Vulkan app?
Thanks in advance
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Modern GPUs have many parallel shading units. I'd like to know how texture cache is managed in that scenario.
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If you read papers about subsurface scattering, you'll frequently come across references to something called the "dipole approximation". This term seems to go back to the paper A Practical Model for ...
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Can you answer this question?
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This is in reference and contrast to the discipline (or more or less requirement) of opengl to group draws that use the same materials together, to minimize making many draw calls or many switch ...
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