Draw Text with FreeType (DirectX 11) - c++

Question

So I would like to draw text with FreeType (on DirectX 11). The problem is that I don't really understand how to create the my_draw_bitmap function (I follow this tutorial).
I get all the glyphs then convert them to bitmap, but I don't see how to convert an FT_Bitmap* to a ID3D11Texture2D* (this would - in theory - allow me to render a text)
Here is my code :
FontLoader.cpp
void FontLoader::RenderText(ID3D11Device* p_device, Text* p_text, Math::Vec2 p_position)
{
const char* text = p_text->GetText();
FT_Face face = p_text->GetFont()->GetFace();
FT_GlyphSlot slot = face->glyph;
Math::Vec2 pen = p_position;
for (unsigned int i = 0; i < strlen(text); ++i)
{
if (FT_Load_Char(face, text[i], FT_LOAD_RENDER))
continue;
// draw to our target surface
CreateTextureFromBitmap(p_device, &slot->bitmap, Math::Vec2((float)slot->bitmap_left, (float)slot->bitmap_top));
// Increment pen position
pen._x += slot->advance.x >> 6;
}
}
ID3D11Texture2D* FontLoader::CreateTextureFromBitmap(ID3D11Device* p_device, FT_Bitmap* p_bitmap, Math::Vec2 p_position)
{
D3D11_TEXTURE2D_DESC textureDesc;
textureDesc.Width = p_bitmap->width;
textureDesc.Height = p_bitmap->pitch;
textureDesc.MipLevels = textureDesc.ArraySize = 1;
textureDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
textureDesc.SampleDesc.Count = 1;
textureDesc.Usage = D3D11_USAGE_DYNAMIC;
textureDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
textureDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
textureDesc.MiscFlags = 0;
ID3D11Texture2D *texture2D = NULL;
// don't know how and when to use p_bitmap
p_device->CreateTexture2D(&textureDesc, NULL, &texture2D);
return texture2D;
}
Thanks a lot !