Render to cubemap

Hi everyone !

I’ve a trouble to render to a cubemap. It works well when I attach to a TEXTURE_2D_ARRAY (each layer is properly drawn) but when I attach a TEXTURE_CUBE_MAP only the first face (+X) is drawn.

Here, a simplified version of my program :

... 

// Init
glGenTextures(1,&skyCubeTexture.id);
glBindTexture(skyCubeTexture.target,skyCubeTexture.id);

glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X,0,GL_RGBA32F,skyCubeTexture.size.x,skyCubeTexture.size.y,0,GL_RGBA,GL_FLOAT,NULL);
		glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X,0,GL_RGBA32F,skyCubeTexture.size.x,skyCubeTexture.size.y,0,GL_RGBA,GL_FLOAT,NULL);
		glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y,0,GL_RGBA32F,skyCubeTexture.size.x,skyCubeTexture.size.y,0,GL_RGBA,GL_FLOAT,NULL);
		glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,0,GL_RGBA32F,skyCubeTexture.size.x,skyCubeTexture.size.y,0,GL_RGBA,GL_FLOAT,NULL);
		glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z,0,GL_RGBA32F,skyCubeTexture.size.x,skyCubeTexture.size.y,0,GL_RGBA,GL_FLOAT,NULL);
		glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,0,GL_RGBA32F,skyCubeTexture.size.x,skyCubeTexture.size.y,0,GL_RGBA,GL_FLOAT,NULL);
		

glTexParameterf(skyCubeTexture.target,	 GL_TEXTURE_MIN_FILTER,	GL_LINEAR);
glTexParameterf(skyCubeTexture.target,	 GL_TEXTURE_MAG_FILTER,	GL_LINEAR);
glTexParameterf(skyCubeTexture.target,	 GL_TEXTURE_WRAP_S,		GL_CLAMP_TO_EDGE);
glTexParameterf(skyCubeTexture.target,	 GL_TEXTURE_WRAP_T,		GL_CLAMP_TO_EDGE);
glTexParameterf(skyCubeTexture.target,	 GL_TEXTURE_WRAP_R,		GL_CLAMP_TO_EDGE);
glBindTexture(skyCubeTexture.target,0);

glGenFramebuffers(1,&skyCubeFramebuffer);
glBindFramebuffer(GL_FRAMEBUFFER,skyCubeFramebuffer);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, skyCubeTexture.id, 0);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
glBindFramebuffer(GL_FRAMEBUFFER,0);

... 

// Draw a cube around the view point with normal pointing inside
glDisable(GL_DEPTH_TEST);
glDepthMask(false);
glCullFace(GL_FRONT);

glViewport(0,0,skyCubeTexture.size.x,skyCubeTexture.size.y);
glBindFramebuffer(GL_FRAMEBUFFER,skyCubeFramebuffer);
glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(program.id);
glBindBuffer(GL_ARRAY_BUFFER, vbuffer.id);
glVertexAttribPointer(	vbufferVar,
			3,
			GL_FLOAT,
			false,
			sizeof(glm::vec3),
			GLF_BUFFER_OFFSET(0));
glEnableVertexAttribArray(vbufferVar);
glDrawArrays(GL_TRIANGLES, 0, vbuffer.Size());
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER,0);
		glViewport(0,0,ctx::window.Size.x,ctx::window.Size.y);

glCullFace(GL_BACK);
glDepthMask(true);
glEnable(GL_DEPTH_TEST);

VS :

#version 330 core
in  vec3 Position;
void main()
{
	gl_Position = vec4(Position,1.f);
}

GS :

#version 330 core

uniform mat4 Transformations[6];

layout(triangles) in;
layout(triangle_strip, max_vertices = 18) out;

out vec3 gPosition;

void main()
{
	for(int layer=0;layer<6;++layer)
	{
		gl_Layer = layer;
		for(int i=0; i<3;++i)
		{
			gl_Position = Transformations[layer] * gl_in[i].gl_Position;
			gPosition	= gl_in[i].gl_Position.xyz;
			EmitVertex();
		}
		EndPrimitive();
	}
}

FS :

#version 330 core
in  vec3        gPosition;
out vec4        FragColor; 

void main()
{
        FragColor = vec4(gPosition,1);
        return;
}

BTW, when I visualize the FBO in gDEBugger with an attached TEXTURE_CUBE_MAP, it says that something is attached but it doesn’t say what. When I do the same with TEXTURE_2D_ARRAY, it says a TEXTURE_2D_ARRAY is attached. Weird.

My configuration :

• Win7 32
• OpenGL 3.3 Core
• nVidia 580GTX
• Driver 266.58

Bug driver ? Any idea ?

Thank you.