[c++] Texture coloring in a buffer

[Skrakle]

I'm using a buffer to draw a minimap along with a dot representing my position. The dot is a normal texture that i'm loading, 1x1 white image and when i draw it on the buffer, i want to set its color like in context->SetColor but it stays white. Is there some way to obtain the context of a buffer?

 

      	 Buffer* buf = Buffer::Create(minimap_width, minimap_height);
           buf->Enable();
           buf->Clear();

      	 buf->SetColor(1, 1, 0, 1);  // does not set color like context->SetColor does

      	 //minimap->Draw(0, 0);
      	 //buf->SetColorTexture(minimap);
      	 dot->Draw(pos.x, pos.y, 5, 5);    // resizing my dot 5x5
      	 buf->SetColorTexture(dot);

           buf->Disable();

           m_rendertarget = buf->GetColorTexture();  // dump the buffer into a texture
           buf->Release();