// Launch this in its own go-routine if you want to occassionally
// delete textures that haven't been used in a while.
func (m *Manager) Scavenger() {
var unused []string
for {
time.Sleep(time.Minute)
unused = unused[0:0]
m.mutex.RLock()
for s, d := range m.registry {
if generation-d.accessed >= 2 {
unused = append(unused, s)
}
}
m.mutex.RUnlock()
m.mutex.Lock()
generation++
if len(unused) == 0 {
m.mutex.Unlock()
continue
}
var unused_data []*Data
for _, s := range unused {
unused_data = append(unused_data, m.registry[s])
m.deleted[s] = m.registry[s]
delete(m.registry, s)
}
render.Queue(func() {
for _, d := range unused_data {
gl.DeleteTextures(1, (*gl.Uint)(&d.texture))
d.texture = 0
}
})
m.mutex.Unlock()
}
}
func reuploadTexture(tex *gl.Uint, w, h int, data []byte) {
if *tex > 0 {
gl.BindTexture(gl.TEXTURE_2D, *tex)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.Sizei(w), gl.Sizei(h), 0,
gl.RGBA, gl.UNSIGNED_BYTE, gl.Pointer(&data[0]))
if gl.GetError() != gl.NO_ERROR {
gl.DeleteTextures(1, tex)
panic("Failed to reupload texture")
}
return
}
*tex = uploadTexture_RGBA32(w, h, data)
}
func uploadTexture_RGBA32(w, h int, data []byte) gl.Uint {
var id gl.Uint
gl.GenTextures(1, &id)
gl.BindTexture(gl.TEXTURE_2D, id)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.Sizei(w), gl.Sizei(h), 0, gl.RGBA,
gl.UNSIGNED_BYTE, gl.Pointer(&data[0]))
if gl.GetError() != gl.NO_ERROR {
gl.DeleteTextures(1, &id)
panic("Failed to load a texture")
}
return id
}
func (s *sheet) loadRoutine() {
ready := make(chan bool, 1)
pixer := make(chan []byte)
for load := range s.load_chan {
if load {
go s.compose(pixer)
go func() {
render.Queue(func() {
s.makeTexture(pixer)
ready <- true
})
}()
} else {
go func() {
<-ready
render.Queue(func() {
gl.DeleteTextures(1, &s.texture)
s.texture = 0
})
}()
}
}
}
func destroyScene() {
gl.DeleteTextures(1, &texture)
}
func (m *Model) destroy() {
gl.DeleteBuffers(1, &m.buffer)
gl.DeleteBuffers(1, &m.index)
gl.DeleteTextures(1, &m.texture_id)
m.shader.destroy()
}
func CloseTextures() {
gl.DeleteTextures(1, &texture)
}
