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Questions tagged [cubemap]

Cube mapping is an environment mapping method that renders the area of interest onto the six faces of a cube and later uses such textures to render specular highlights, reflections, and skyboxes.

18 votes
4 answers
8k views

Procedural Planets, Heightmaps and Textures

I am currently working on an OpenGL procedural planet generator. I hope to use it for a space RPG, that will not allow players to go down to the surface of a planet so I have ignored anything ROAM ...
henryprescott's user avatar
16 votes
1 answer
22k views

Implementing a skybox with GLSL version 330

I am trying to get a skybox working with OpenGL 3.3 and GLSL version 330. I could not find a completely modern OGL skybox tutorial anywhere on the web, so I modernised an older one (using ...
sm81095's user avatar
  • 543
14 votes
1 answer
25k views

OpenGL/GLSL: Render to cube map?

I'm trying to figure out how to render my scene to a cube map. I've been stuck on this for a bit and figured I would ask you guys for some help. I'm new to OpenGL and this is the first time I'm using ...
Joey Green's user avatar
  • 2,519
10 votes
1 answer
733 views

Environment mapping without cubemap (need coordinates projection)

I'm working on a project with C++ and glsl (4.1). I have implemented a mirror object which is a plane at height 0 that works as follow: I render the scene with a MVP computed such that the camera ...
Zick's user avatar
  • 99
8 votes
1 answer
847 views

Understanding how texCUBE works and writing cubemaps properly into a cube rendertarget

My goal is to create accurate reflections, sampled from a dynamic cubemap, for specific 3d objects (mostly lights) in XNA 4.0. To sample the cubemap I compute the 3d reflection vector in a classic ...
cubrman's user avatar
  • 1,561
6 votes
2 answers
879 views

Is a dynamic enviroment map using pincushion curvilinear perspective projection possible?

I'm wondering if it is possible to generate a dynamic spherical environment map using a single frame render using a pincushion curvilinear perspective projection matrix (phew, that's a mouthful)? I'...
NtscCobalt's user avatar
  • 1,058
6 votes
1 answer
2k views

Stepping through 3D noise to generate a cubemap for a sphere

This is somewhat related to a previous question I asked How to create a seamless cubemap noise texture? I have managed to successfully step through a 3D noise function to create a cubemap texture ...
NeomerArcana's user avatar
6 votes
2 answers
8k views

Unity - Water Cube (to 2D game)

I wonder if you can create a cube of water within the unity! I'm starting to use the Unity, and took a sought as to whether there was already something like this ... but have not found any tutorial ...
Igor's user avatar
  • 219
5 votes
1 answer
1k views

Why are cube map axes sometimes labelled incorrectly?

In both 3ds Max (which uses a right-handed coordinate system) and Unity (which uses a left-handed coordinate system), the cube map faces labelled "left" and "right" show the view facing the opposite ...
Reign of Error's user avatar
5 votes
5 answers
5k views

How to create a seamless cubemap noise texture?

I have, so far, been able to create the vertices and UV coords etc for a sphere that would be textured with a cube map. I have also successfully loaded a cube texture from file and applied it to my ...
NeomerArcana's user avatar
5 votes
1 answer
2k views

How to attach a framebuffer to a whole cube map from a GL_TEXTURE_CUBE_MAP_ARRAY?

I'm trying to make shadow cube maps in an array. I want to draw each shadow map with a single pass using a geometry shader, which I read about here: https://stackoverflow.com/questions/462721/...
Byron's user avatar
  • 169
5 votes
1 answer
2k views

Using textureGrad for anisotropic integration approximation

I'm trying to develop a real time rendering method using real time acquired envmap (cubemap) for lightning. This implies that my envmap can change as often as every frame and I therefore cannot use ...
Amxx's user avatar
  • 151
5 votes
0 answers
2k views

OpenGL Depth Cubemap with Geometry Shader Not Rendering Correctly

I was having some trouble with cubemaps in OpenGL, and was hoping to get some help. I've been following a tutorial about point light shadow mapping using cubemaps, where a geometry shader is used to ...
kingsapo's user avatar
  • 151
5 votes
2 answers
2k views

Skybox rendering

I am sorry if this is trivial, but I got into OpenGL just very very recently. I am trying to render skybox (with cubemaps) and this is what I have done: Created a VBO with vertices positions (36 of ...
gufranc's user avatar
  • 123
4 votes
3 answers
6k views

Is a Single Texture Cube Map Possible?

I'm currently developing a test project to explore OpenGL 3 texturing abilities. I have a simple cube, made of 8 vertices and 36 indices. I want each of the cubes faces to have a different texture, so ...
smoth190's user avatar
  • 916

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