The cubemap tag has no usage guidance.
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10 views
Control cubemap reflection amount from metallic and smoothness properties
I have a custom surface shader, and I want to use the reflections from the reflection/environment probe. In the default standard shader (for unity), the reflection amount is controlled by the "...
2
votes
0answers
33 views
OpenGL cubemap binding
I'm experimenting a strange behaviour of textures inside my shaders.
Basically I need and bind two cubemap textures inside my shader but only one gets actually bound.
I've tried swapping the two ...
4
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0answers
58 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 ...
1
vote
1answer
143 views
How to Load and Apply a Cube Map with DDS Texture Loader?
So I have been spending a lot of time recently implementing a working skybox/skysphere, and have almost completed it. The last thing that I need to do is to load my given texture, a skybox texture ...
2
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2answers
175 views
Efficiency - Cubemap or Raytraced reflection?
I'm an amateur in 3D game development. The thing I want to know is shading related.
For reflection purpose, which will be the efficient way? Either "Realtime render to Cubemap" or "Ray trace based" ...
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0answers
167 views
libnoise to generate 6 faces of a cubemap
I want to create a cubemap generator for both terrain and to skybox using libnoise C++, but I'm stuck in latitude of the poles since realize a little confused how libnoise deals with latitudes and ...
1
vote
1answer
47 views
GL_INVALID_OPERATION in glGenerateMipmap(incomplete cube map)
I'm trying to learn OpenGL and i'm using SOIL to load images.
I have the following piece of code:
GLuint texID = 0;
bool loadCubeMap(const char * baseFileName) {
glActiveTexture(GL_TEXTURE0);
...
1
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0answers
199 views
Cube map or 2D texture map
I'm trying to map quadsphere with COBE spherical cube (CSC) projection in OpenGL (wanna map planets). I managed to create a 2D texture and it works well except seams at edges.
Then I learned that ...
2
votes
1answer
273 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: http://stackoverflow.com/questions/462721/...
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votes
1answer
75 views
Issue creating a dynamic seemless cube map
I have a function for building a cube map, given a location in space. I also have a system for displaying cubemaps (either loaded from images or given as a texture handle), and they work fine and are ...
1
vote
1answer
105 views
How do I store an FBO'S as a cube map?
As of late I've been trying to implement Cubemaps in my engine, and have managed to get the rendering side of them working. Currently, I'm trying to implement a function for creating them, but I ...
0
votes
2answers
116 views
CubeMap - Why size of skybox cube has no effect?
I have normal skybox via CubeMap, but i noticed that the size of the cube has no effect. I would expect that when i have cube size 20.0, i will see different result than with cube of size 1000.0 (same ...
4
votes
2answers
1k 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
...
3
votes
0answers
298 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 ...
1
vote
1answer
202 views
Cubemaps turn black OpenGL GLSL Java LWJGL
Recently I tried to add cubemaps to my 3D-rendering engine. The objects with a cubemap now turn completely black.
This is how I load my cubemap:
public static int loadCubeMap(String filename)
{
...
0
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0answers
201 views
Cube map for texturing edge distortions
I am using a cube map to texture a sphere and all is well except the seams that become very noticeable near the corners of the cube.
I have tried to correct the sampling coordinates in the shader, ...
1
vote
1answer
285 views
Environment mapping - cube mapping using OpenGL
I'm trying to do cube mapping.
Problem is that I'm getting this:
This is what I get when I rotate it:
But it should look like this
Here is code for vertex shader
varying vec2 tex_coord;
void ...
1
vote
0answers
187 views
Normal Mapping a Cubemap
I posted a question on Stackoverflow and it was suggested that it would be better asked here.
I have a sphere. It was created via the icosphere method outlined here: http://blog.andreaskahler.com/...
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0answers
180 views
Is it possible to generate a Spheremap from a Texture2D in Unity at run-time?
I was trying to create a spheremap from a Texture2D for a skybox at run-time (Standalone build) in Unity. Does anyone know if this is possible and how to do that in Unity?
In the editor you can set ...
1
vote
1answer
504 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 ...
3
votes
5answers
1k 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 ...
2
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0answers
159 views
OpenGL: Avoid geometry shader for cubemap framebuffer
I want to render an environment map into a cubemap framebuffer but I dislike the fact, that I have to use the geometry shader to set gl_Layer because the geometry shader would be a basic passthrough ...
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0answers
98 views
How to create custom cubemap images?
I managed to use cube maps in OpenGL to get reflection and refraction effects. So far I used images from this site, however, I want to create my own set of images to use in a cubemap, the idea is just ...
0
votes
1answer
253 views
Reflection/environment mapping
I'm implementing reflection/environment mapping using a cubemap. I have it working for the most part but when I move my camera around, I see the same area reflected on the object. I am calculating the ...
1
vote
1answer
301 views
How to calculate reflection vector from point sprite sphere?
So far I achieved building a cube map following this tutorial. Then I drew three points using glDrawArrays(GL_POINTS,0,3) and calculate the normals based on a sphere.
To compute the incoming light ...
2
votes
3answers
759 views
How do reflections work for large flat surfaces?
I understand how reflections work for objects. A cubemap would be rendered around a certain point in 3D space, usually at the center of the object that the reflection is to be applied to, and that is ...
5
votes
2answers
492 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 ...
0
votes
1answer
384 views
Skybox: OpenGL texCUBE vs a textured cube
In OpenGL, the typical way that I've seen to set up a skybox using cubemapping is to create a cube in camera space, prepare a cubemap sampler with the appropriate six-sided texture, and then in the ...
3
votes
1answer
2k views
Irradiance cubemap to spherical harmonics conversion
What are advantages of using spherical harmonics instead of irradiance cubemap? Are there any common used methods for conversion?
5
votes
1answer
506 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 ...
5
votes
1answer
315 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 ...
4
votes
1answer
525 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 ...
2
votes
1answer
254 views
Get the game state using Multithreading in Java Monkey Engine 3
I’ve been trying out Java Monkey’s multi threading recently via the wiki’s tutorial. Since I just wanted to test a prototype clinet, I made a program which creates some cubes using the ‘Cubes’ library ...
0
votes
1answer
388 views
GL_TEXTURE_CUBE_MAP min/mag filter problem
I found it hard getting min/mag filtering to work with cubemap texture. In the screenshot-attachment I've created a cube using a cubemap texture, and also a grid of planes using a 2D texture. For both ...
1
vote
0answers
323 views
Drawing cube map and texture array on NVidia cards doesn't work
I have small problem with shadow maps preview. After binding shadow framebuffer I bind proper texture to store depth in it and then render the whole scene. When I read that values in shader to ...
0
votes
1answer
111 views
Texture errors in CubeMap
I am trying to apply this texture as a cubemap. This is my result:
Clearly I am doing something with my texture coordinates, but I cannot for the life of me figure out what. I don't even see a ...
1
vote
2answers
706 views
Error while reading TGA file and doing Texture Cube map
In my program, i read a TGA file with a function like this:
char* LoadTGA(char* filename, int* width, int* height, int* bpp);
As you can see, this function: return a char array of image data (...
8
votes
1answer
10k 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 ...
2
votes
0answers
463 views
glFramebufferTexture2D gives corruption with cube map textures
I am using glFramebufferTexture2D with cube map textures but it gives corruption in texture. draw_cube() function works perfectly when i draw that on default framebuffer.
GLenum types[]={...
2
votes
3answers
3k 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 ...
0
votes
1answer
1k views
E_FAIL: An undetermined error occurred (-2147467259) when loading a cube texture
I'm trying to implement a skybox into my engine, and I'm having some trouble loading the image as a cube map. Everything works (but it doesn't look right) if I don't load using an ...
1
vote
3answers
753 views
How do you rotate a cube map?
I'm looking for suggestions on this
Say you have a cube map. You want to rotate it as efficiently as possible.
You can render the cube map, rotate the camera, and render the scene to another cube ...
10
votes
1answer
14k 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 ...
1
vote
1answer
522 views
How do you create a fractal cube-map?
I want to create a map similar to how Mincraft and other related games do. I just haven't the faintest clue on how to do so. Can anyone point me to a decent tutorial or give me a decent run through? I ...
5
votes
2answers
555 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'...
0
votes
1answer
1k views
OpenGL - resize texture when using cubemap
I want to resize my texture. I am using cubemap to compute reflection. I want to use this cubemap to draw skybox. Skybox is drawn but I want to resize texture down, because it is dilated. As I wrote ...
2
votes
2answers
4k views
How do I create a sky box with OpenGL ES 2.0?
Can you give me hint to any good sky box example in OpenGL ES 2.0? I have found only OpenGL and does not work for me.
I am doing it this way:
Initialization:
glUseProgram(m_programSkyBox.Program);
...
2
votes
2answers
1k views
Can one draw a cube using different method/drawing mode?
I've just started learning gamedev (in particular android EGL based) and have ran over a code from Pro Android Games 2 that looks as follows:
/* * Copyright (C) 2007 Google Inc.
* * Licensed ...
18
votes
4answers
5k 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 ...
4
votes
2answers
1k views
Converting Cube Maps
I have cube maps in lat/long format, and i need to convert them to Horizontal/Vertical Cross, and individual cross images, is there an utility to do that?
