Method attach_buffer

src/output/render-manager.cpp:602–631

    }

    void attach_buffer(int fb, int width, int height)
    {
        if ((buffer.width != width) || (buffer.height != height))
        {
            free_buffer();
            wf::gles::run_in_context_if_gles([&]
            {
                GL_CALL(glGenTextures(1, &buffer.tex));
                GL_CALL(glBindTexture(GL_TEXTURE_2D, buffer.tex));
                GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
                    width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL));
                GL_CALL(glBindTexture(GL_TEXTURE_2D, 0));
            });

            buffer.width  = width;
            buffer.height = height;
        }

        wf::gles::run_in_context_if_gles([&]
        {
            GL_CALL(glBindTexture(GL_TEXTURE_2D, buffer.tex));
            GL_CALL(glBindFramebuffer(GL_FRAMEBUFFER, fb));
            GL_CALL(glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
                GL_TEXTURE_2D, buffer.tex, 0));
            GL_CALL(glBindTexture(GL_TEXTURE_2D, 0));
            GL_CALL(glBindFramebuffer(GL_FRAMEBUFFER, 0));

            currently_attached_fb = fb;
        });
    }
};

/**