Function bitmap_load

TheForceEngine/TFE_Jedi/Level/rtexture.cpp:320–484

	}

	TextureData* bitmap_load(const char* name, u32 decompress, AssetPool pool, bool addToCache)
	{
		// TFE: Keep track of per-level texture state for serialization.
		// This is also useful for handling per-level GPU texture mirrors.
		TextureTable::iterator iTex = s_textureTable[pool].find(name);
		if (iTex != s_textureTable[pool].end())
		{
			return s_textureList[pool][iTex->second].texture;
		}

		FilePath filepath;
		if (!TFE_Paths::getFilePath(name, &filepath))
		{
			return nullptr;
		}

		FileStream file;
		if (!file.open(&filepath, Stream::MODE_READ))
		{
			return nullptr;
		}

		size_t size = file.getSize();
		s_buffer.resize(size);
		file.readBuffer(s_buffer.data(), (u32)size);
		file.close();

		TextureData* texture = (TextureData*)region_alloc(s_texState.memoryRegion, sizeof(TextureData));
		memset(texture, 0, sizeof(TextureData));

		const u8* data = s_buffer.data();
		const u8* end = data + size;
		const u8* fheader = data;
		data += 3;

		if (strncmp((char*)fheader, "BM ", 3))
		{
			TFE_System::logWrite(LOG_ERROR, "bitmap_load", "File '%s' is not a valid BM file.", filepath);
			return nullptr;
		}

		u8 version = readByte(data);
		if (version != DF_BM_VERSION)
		{
			TFE_System::logWrite(LOG_ERROR, "bitmap_load", "File '%s' has invalid BM version '%u'.", filepath, version);
			return nullptr;
		}

		texture->width = readUShort(data);
		texture->height = readUShort(data);
		texture->uvWidth = readShort(data);
		texture->uvHeight = readShort(data);
		texture->flags = readByte(data);
		texture->logSizeY = readByte(data);
		texture->compressed = readByte(data);
		texture->palIndex = 1;
		texture->animIndex = -1;
		texture->frameIdx = -1;