GLuint renderToCubeMap(int size, GLenum InternalFormat, GLenum Format, GLenum Type) {

// color cube map
GLuint textureObject;
int face;
GLenum status;

//glEnable(GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE1);
glGenTextures(1, &textureObject);
glBindTexture(GL_TEXTURE_CUBE_MAP, textureObject);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);

for (face = 0; face < 6; face++) {
    glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, 0, InternalFormat, size, size, 0, Format, Type, NULL);
}
 
// framebuffer object
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X, textureObject, 0);

status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
printf("%d\"\n", status);
    printf("%d\n", GL_FRAMEBUFFER_COMPLETE);
 
glViewport(0,0,size, size);

for (face = 1; face < 6; face++) {
    
    drawSpheres();
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, textureObject, 0);
     
}
 
 //Bind 0, which means render to back buffer, as a result, fb is unbound
   glBindFramebuffer(GL_FRAMEBUFFER, 0);
    
   return textureObject;
}

GLuint renderToCubeMap(int size, GLenum InternalFormat, GLenum Format, GLenum Type)
    {
     
    // color cube map
    GLuint textureObject;
    int face;
    GLenum status;
    
    //glEnable(GL_TEXTURE_2D);
    glActiveTexture(GL_TEXTURE1);
    glGenTextures(1, &textureObject);
    glBindTexture(GL_TEXTURE_CUBE_MAP, textureObject);
    glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
    
    for (face = 0; face < 6; face++) {
        glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, 0, InternalFormat, size, size, 0, Format, Type, NULL);
    }
     
    // framebuffer object
    glGenFramebuffers(1, &fbo);
    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
     
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X, textureObject, 0);
 
    status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
    printf("%d\"\n", status);
        printf("%d\n", GL_FRAMEBUFFER_COMPLETE);
     
    glViewport(0,0,size, size);

    for (face = 1; face < 6; face++) {
        
        drawSpheres();
        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, textureObject, 0);
         
    }
     
     //Bind 0, which means render to back buffer, as a result, fb is unbound
       glBindFramebuffer(GL_FRAMEBUFFER, 0);
        
       return textureObject;
    }

I currently have a working example of using a cubemap bmp file, and the samplerCube sample type in the fragment shader is attached to GL_TEXTURE1. I'm not changing the code at all( except for not calling the function that was loading the cubemap bmp file) and trying to use the below code to render to a cubemap.

it can access it.

Now, I realize in the draw loop below that I'm not changing the view direction to look down the +x, -x, +y, -y, +z, -z axis. I really was just wanting to see something working first before I went that route.

I'm thinking the problem my be the format types when setting my texture which is GL_RGB8, GL_RGBA but I've also tried:

I thought this would be standard since we are rendering to a texture attached to a framebuffer, but I've seen different examples that use different values.

Also, I'm not creating a depth buffer for the FBO which I saw in most exaples, because I'm only wanting the color buffer for my cube map. I actually added one to see if that was the problem and still got the same results. I could of fudged that up when I tried.

I currently have a working example of using a cubemap bmp file, and the samplerCube sample type in the fragment shader is attached to GL_TEXTURE1. I'm not changing the shader code at all. I'm just changing the fact that I wont be calling the function that was loading the cubemap bmp file and trying to use the below code to render to a cubemap.

it can access it in my fragment shader via uniform samplerCube Cubemap.

Now, I realize in the draw loop below that I'm not changing the view direction to look down the +x, -x, +y, -y, +z, -z axis. I really was just wanting to see something working first before implemented that. I figured I should at least see something on my object the way the code is now.

I'm thinking the problem might be the format types when setting my texture which is GL_RGB8, GL_RGBA but I've also tried:

I thought this would be standard since we are rendering to a texture attached to a framebuffer, but I've seen different examples that use different enum values.

Also, I'm not creating a depth buffer for the FBO which I saw in most examples, because I'm only wanting the color buffer for my cube map. I actually added one to see if that was the problem and still got the same results. I could of fudged that up when I tried.