// Texture (https://wiki.libsdl.org/SDL_UpdateTexture)
func (texture *Texture) Update(rect *Rect, pixels unsafe.Pointer, pitch int) error {
_pitch := C.int(pitch)
_ret := C.SDL_UpdateTexture(texture.cptr(), rect.cptr(), pixels, _pitch)
if _ret < 0 {
return GetError()
}
return nil
}
func texFromImage(rend *C.SDL_Renderer, img *image.NRGBA) *C.SDL_Texture {
b := img.Bounds()
w, h := b.Dx(), b.Dy()
fmt := C.SDL_PIXELFORMAT_ABGR8888
acc := C.SDL_TEXTUREACCESS_STATIC
tex := C.SDL_CreateTexture(rend, C.Uint32(fmt), C.int(acc), C.int(w), C.int(h))
if tex == nil {
panic(sdlError())
}
if C.SDL_UpdateTexture(tex, nil, unsafe.Pointer(&img.Pix[0]), C.int(img.Stride)) < 0 {
panic(sdlError())
}
if C.SDL_SetTextureBlendMode(tex, C.SDL_BLENDMODE_BLEND) < 0 {
panic(sdlError())
}
return tex
}
func (t *Texture) Update64(r *Rect, pix []uint64, pitch int) error {
if r == nil {
_, _, w, h, err := t.Query()
if err != nil {
return err
}
r = &Rect{
W: int32(w),
H: int32(h),
}
}
if len(pix) < int(r.W)*int(r.H) {
return errors.New("len(pix) < r.W * r.H")
}
if C.SDL_UpdateTexture(t.c, r.c(), unsafe.Pointer(&pix[0]), C.int(pitch)) != 0 {
return getError()
}
return nil
}
func (t *Texture) Update(rect *Rect, pixels interface{}, pitch int) {
C.SDL_UpdateTexture(t.cTexture, (*C.SDL_Rect)(cast(rect)), ptr(pixels), C.int(pitch))
}
func (texture *Texture) Update(rect *Rect, pixels unsafe.Pointer, pitch int) int {
_texture := (*C.SDL_Texture)(unsafe.Pointer(texture))
_rect := (*C.SDL_Rect)(unsafe.Pointer(rect))
_pitch := (C.int)(pitch)
return (int)(C.SDL_UpdateTexture(_texture, _rect, pixels, _pitch))
}
func (texture *Texture) Update(rect *Rect, pixels unsafe.Pointer, pitch int) int {
_pitch := C.int(pitch)
return int(C.SDL_UpdateTexture(texture.cptr(), rect.cptr(), pixels, _pitch))
}
func (t *Texture) Update(rect *Rect, pixels interface{}, pitch int) {
GlobalMutex.Lock()
defer GlobalMutex.Unlock()
C.SDL_UpdateTexture(t.cTexture, (*C.SDL_Rect)(cast(rect)), ptr(pixels), C.int(pitch))
}
