func (c *Context) DeleteTexture(t Texture) {
gl := c.gl
if !gl.IsTexture(mgl.Texture(t)) {
return
}
if c.lastTexture == t {
c.lastTexture = invalidTexture
}
gl.DeleteTexture(mgl.Texture(t))
}
func (c *Context) NewFramebuffer(texture Texture) (Framebuffer, error) {
gl := c.gl
f := gl.CreateFramebuffer()
if f.Value <= 0 {
return Framebuffer{}, errors.New("opengl: creating framebuffer failed: gl.IsFramebuffer returns false")
}
c.bindFramebuffer(Framebuffer(f))
gl.FramebufferTexture2D(mgl.FRAMEBUFFER, mgl.COLOR_ATTACHMENT0, mgl.TEXTURE_2D, mgl.Texture(texture), 0)
s := gl.CheckFramebufferStatus(mgl.FRAMEBUFFER)
if s != mgl.FRAMEBUFFER_COMPLETE {
if s != 0 {
return Framebuffer{}, fmt.Errorf("opengl: creating framebuffer failed: %v", s)
}
if e := gl.GetError(); e != mgl.NO_ERROR {
return Framebuffer{}, fmt.Errorf("opengl: creating framebuffer failed: (glGetError) %d", e)
}
return Framebuffer{}, fmt.Errorf("opengl: creating framebuffer failed: unknown error")
}
return Framebuffer(f), nil
}
func (c *Context) IsTexture(t Texture) bool {
gl := c.gl
return gl.IsTexture(mgl.Texture(t))
}
func (c *Context) bindTextureImpl(t Texture) error {
gl := c.gl
gl.BindTexture(mgl.TEXTURE_2D, mgl.Texture(t))
return nil
}