Texture TextureFactory::loadTexture(const std::string& fileName, ObjectsCache& cache,
bool async, TextureLoaderDelegate* delegate)
{
if (fileName.length() == 0)
return Texture();
CriticalSectionScope lock(_csTextureLoading);
std::string file = application().environment().resolveScalableFileName(fileName,
renderContext()->screenScaleFactor());
if (!fileExists(file))
{
log::error("Unable to find texture file: %s", file.c_str());
return Texture();
}
uint64_t cachedFileProperty = 0;
Texture texture = cache.findAnyObject(file, &cachedFileProperty);
if (texture.invalid())
{
TextureDescription::Pointer desc =
async ? et::loadTextureDescription(file, false) : et::loadTexture(file);
if (desc.valid())
{
bool calledFromAnotherThread = Threading::currentThread() != threading().renderingThread();
texture = Texture(new TextureData(renderContext(), desc, desc->origin(), async || calledFromAnotherThread));
cache.manage(texture, ObjectLoader::Pointer(this));
if (async)
_loadingThread->addRequest(desc->origin(), texture, delegate);
else if (calledFromAnotherThread)
assert(false && "ERROR: Unable to load texture synchronously from non-rendering thread.");
}
}
else
{
auto newProperty = cache.getFileProperty(file);
if (cachedFileProperty != newProperty)
reloadObject(texture, cache);
if (async && (delegate != nullptr))
{
Invocation1 i;
i.setTarget(delegate, &TextureLoaderDelegate::textureDidStartLoading, texture);
i.invokeInMainRunLoop();
i.setTarget(delegate, &TextureLoaderDelegate::textureDidLoad, texture);
i.invokeInMainRunLoop();
}
}
return texture;
}
void TextureLoadingThread::addRequest(const std::string& fileName, Texture::Pointer texture,
TextureLoaderDelegate* delegate)
{
if (delegate)
{
Invocation1 i;
i.setTarget(delegate, &TextureLoaderDelegate::textureDidStartLoading, texture);
i.invokeInMainRunLoop();
}
CriticalSectionScope lock(_requestsCriticalSection);
_requests.push(etCreateObject<TextureLoadingRequest>(fileName, texture, delegate));
if (running())
resume();
else
run();
}
uint64_t TextureLoadingThread::main()
{
while (running())
{
TextureLoadingRequest* req = dequeRequest();
if (req)
{
req->textureDescription = loadTexture(req->fileName);
Invocation1 invocation;
invocation.setTarget(_delegate, &TextureLoadingThreadDelegate::textureLoadingThreadDidLoadTextureData, req);
invocation.invokeInMainRunLoop();
}
else
{
suspend();
}
}
return 0;
}
Texture::Pointer TextureFactory::loadTexture(const std::string& fileName, ObjectsCache& cache,
bool async, TextureLoaderDelegate* delegate)
{
if (fileName.length() == 0)
return Texture::Pointer();
CriticalSectionScope lock(_csTextureLoading);
auto file = resolveTextureName(fileName);
if (!fileExists(file))
return Texture::Pointer();
uint64_t cachedFileProperty = 0;
Texture::Pointer texture = cache.findAnyObject(file, &cachedFileProperty);
if (texture.invalid())
{
TextureDescription::Pointer desc =
async ? et::loadTextureDescription(file, false) : et::loadTexture(file);
int maxTextureSize = static_cast<int>(RenderingCapabilities::instance().maxTextureSize());
if ((desc->size.x > maxTextureSize) || (desc->size.y > maxTextureSize))
{
log::warning("Attempt to load texture with dimensions (%d x %d) larger than max allowed (%d)",
desc->size.x, desc->size.y, maxTextureSize);
}
if (desc.valid())
{
bool calledFromAnotherThread = !threading::inMainThread();
texture = Texture::Pointer::create(renderContext(), desc, desc->origin(), async || calledFromAnotherThread);
cache.manage(texture, _private->loader);
if (async)
{
_loadingThread->addRequest(desc->origin(), texture, delegate);
}
else if (calledFromAnotherThread)
{
ET_FAIL("ERROR: Unable to load texture synchronously from non-rendering thread.");
}
}
}
else
{
auto newProperty = cache.getFileProperty(file);
if (cachedFileProperty != newProperty)
reloadObject(texture, cache);
if (async)
{
textureDidStartLoading.invokeInMainRunLoop(texture);
if (delegate != nullptr)
{
Invocation1 i;
i.setTarget(delegate, &TextureLoaderDelegate::textureDidStartLoading, texture);
i.invokeInMainRunLoop();
}
textureDidLoad.invokeInMainRunLoop(texture);
if (delegate != nullptr)
{
Invocation1 i;
i.setTarget(delegate, &TextureLoaderDelegate::textureDidLoad, texture);
i.invokeInMainRunLoop();
}
}
}
return texture;
}