Encyclopedia of Creative Coding

I published this article on openFrameworks forum also. Recently I was so fascinating to work with raymarching technology in oF, that I decide to write this detailed post about it. Such technology allows to render non-rigid objects such as clouds, create dynamic and truly geneative volumes without meshes, and, additionally, very simply render in in VR or 360-degrees panoramic images. It was not so fast to collect all information, so I sure it will be useful for somebody desired to work with in in a modern oF/GLSL. We (art-duet Endless Attractions Museum ) recently released VR art project "Night sleep was taken from my eyes, V.2". In the project we are thinking, how are our memories formed? Is it possible to visualize the amnesia process? What will the storage look like in the future? Wearing the VR HMD, a viewer found himself flying in a cloudy space. Some clouds contain inside transformed panoramic photos illustrating one day in the life of...

Here we explain how to work with 3D textures using modern OpenGL, verson >= 3.2, using C++ code with openFrameworks. For preparing this text we used several sources: https://stackoverflow.com/questions/13459770/glsl-sampler3d-in-vertex-shader-texture-appears-blank https://en.sfml-dev.org/forums/index.php?topic=23871.0 https://community.khronos.org/t/opengl-3-x-glenable-gl-texture-2d-gl-invalid-enum/61405 https://github.com/tiagosr/ofxShadertoy We will performs the folliwing steps to create and 3D texture for openFrameworks 0.10.1: 1. Enable programmable pipeline 2. Define the function for printing GL errors 3. Create some volume data 4. Create and upload 3D texture 5. Setting 3D texture to shader 6. Create shader files 1. Enable programmable pipeline Be sure you are using programmable pipeline, so in main.cpp, main() use the following code: int main() {     ofGLWindowSettings settings;     se...

Raymarching is a special method of rendering 3D objects or 3D scene: It's used for rendering ocean water, clouds, metaballs in Unreal Engine 4 and other engines and 3D editors. It's a main technique used for rendering 3D in Shadertoy projects. Examples Shadertoy projects of rendering generative volumes, clouds, ocean and skybox reflections: Sculpture III by iq: https://www.shadertoy.com/view/XtjSDK , see more at http://www.iquilezles.org/www/articles/raymarchingdf/raymarchingdf.htm https://www.shadertoy.com/view/MsfGRr https://www.shadertoy.com/view/lss3zr https://www.shadertoy.com/view/XslGRr https://www.shadertoy.com/view/llsXD2 https://www.shadertoy.com/view/XsB3Rm stochastic ray trace by Otavio Good https://www.shadertoy.com/view/WlfXRr  Metaballs and volumetric clouds in Unreal Engine 4: https://www.youtube.com/watch?v=ZbLCIcTHup4 https://www.youtube.com/watch?v=hWNX9jGEt8k Claybook game is made entirely in similar technique: https://www.youtube.com/...