void Texture2dData::store(const util::Path& file) const {
log::log(MSG(info) << "Saving texture data to " << file);
if (this->info.get_format() != pixel_format::rgba8) {
throw Error(MSG(err) << "Storing 2D textures into files is unimplemented. PRs welcome :D");
}
auto size = this->info.get_size();
// If an older SDL2 is used, we have to specify the format manually.
#ifndef SDL_PIXELFORMAT_RGBA32
uint32_t rmask, gmask, bmask, amask;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else // little endian, like x86
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
std::unique_ptr<SDL_Surface, decltype(&SDL_FreeSurface)> surf(
SDL_CreateRGBSurfaceFrom(
// const_cast is okay, because the surface doesn't modify data
const_cast<void*>(static_cast<void const*>(this->data.data())),
size.first,
size.second,
32,
this->info.get_row_size(),
rmask, gmask, bmask, amask
),
&SDL_FreeSurface
);
#else
std::unique_ptr<SDL_Surface, decltype(&SDL_FreeSurface)> surf(
SDL_CreateRGBSurfaceWithFormatFrom(
// const_cast is okay, because the surface doesn't modify data
const_cast<void*>(static_cast<void const*>(this->data.data())),
size.first,
size.second,
32,
this->info.get_row_size(),
SDL_PIXELFORMAT_RGBA32
),
&SDL_FreeSurface
);
#endif
// Call sdl_image for saving the screenshot to PNG
std::string path = file.resolve_native_path_w();
IMG_SavePNG(surf.get(), path.c_str());
}
SDL_Surface *Surface::createSurfaceWithFormatFrom(void *pixels,
int width, int height, int depth, int pitch, uint32_t format)
{
#if SDL_VERSION_ATLEAST(2, 0, 5)
return SDL_CreateRGBSurfaceWithFormatFrom(pixels, width, height,
depth, pitch, format);
#else
SDL_Surface *surface = Surface::createSurfaceWithFormat(width, height, depth, format);
SDL_memcpy(surface->pixels, pixels, height * pitch);
return surface;
#endif
}
