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How to convert your DDS to EXR online?
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DDS is an image format, the abbreviation of DirectDraw Surface, which is the product of DirectX Texture Compression (DXTC). Developed by NVIDIA Corporation. Most 3D game engines can use DDS format images as textures, and can also make normal maps. You can open it in PhotoShop by installing the DDS plugin
OpenEXR is an HDR standard developed by Industrial Light & Magic. OpenEXR file extension is .exr, the common OpenEXR file is FP16 (16bit Float Point, also known as half Float Point) data image file, the data type of each channel is FP16, a total of four channels 64bpp, each channel 1 bit bit is used to mark the "index", 5 bits are used to store the value of the index, 10 bits are used to store the mantissa of the chromaticity coordinates (u, v), and its dynamic range is from 6.14 × 10 ^ -5 to 6.41 × 10 ^ 4.