func stop() {
gl.DeleteProgram(glimage.program)
gl.DeleteBuffer(glimage.quadXY)
gl.DeleteBuffer(glimage.quadUV)
texmap.Lock()
for _, t := range texmap.texs {
if t.gltex.Value != 0 {
gl.DeleteTexture(t.gltex)
}
t.gltex = gl.Texture{}
}
texmap.Unlock()
}
// init creates an underlying GL texture for a key.
// Must be called with a valid GL context.
// Must hold tm.Mutex before calling.
func (tm *texmapCache) init(key texmapKey) {
tex := tm.texs[key]
if tex.gltex.Value != 0 {
panic(fmt.Sprintf("attempting to init key (%v) with valid texture", key))
}
tex.gltex = gl.CreateTexture()
gl.BindTexture(gl.TEXTURE_2D, tex.gltex)
gl.TexImage2D(gl.TEXTURE_2D, 0, tex.width, tex.height, gl.RGBA, gl.UNSIGNED_BYTE, nil)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_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)
for _, t := range tm.toDelete {
gl.DeleteTexture(t)
}
tm.toDelete = nil
}