Function TextureHandler

Source/HLEGraphics/TextureCacheWebDebug.cpp:14–60

#ifdef DAEDALUS_DEBUG_DISPLAYLIST
static void TextureHandler(void * arg, WebDebugConnection * connection)
{
	const char * params = connection->GetQueryString();
	if (!params)
		return;

	// Yes, this is pretty dodgy. Any random pointer can be passed in so we
	// validated ptr against the list of textures below.
	void * ptr {};
	if (sscanf(params, "ptr=%p", &ptr) != 1)
	{
		printf("Couldn't parse pointer: %s\n", params);
		return;
	}

	// NB: maintain a lock for as long as we have a ref to any textures.
	// If we delete textures on this thread, we'll crash OpenGL.
	{
		MutexLock lock(CTextureCache::Get()->GetDebugMutex());
		CRefPtr<CNativeTexture> texture;
		{
			std::vector<CTextureCache::STextureInfoSnapshot> textures;
			CTextureCache::Get()->Snapshot(lock, textures);
			for (size_t i {}; i < textures.size(); ++i)
			{
				CTextureCache::STextureInfoSnapshot & snap = textures[i];
				if ((CNativeTexture*)snap.Texture == ptr)
				{
					texture = snap.Texture;
					break;
				}
			}
		}

		// Return a 404 if not found
		if (!texture)
		{
			printf("Couldn't find texture %p\n", ptr);
			return;
		}

		connection->BeginResponse(200, -1, "image/png");
		PngSaveImage(connection, texture);
	}

	connection->EndResponse();
}
#endif // DAEDALUS_DEBUG_DISPLAYLIST