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Real-Time DXT Compression
S3TC also known as DXT is a lossy texture compression format with a fixed compression ratio. The DXT format is designed for real-time decompression in hardware on graphics cards, while compressing textures to DXT format may take a considerable amount of time. However, at the cost of a little quality a DXT compressor can be optimized to achieve real-time performance. The DXT compressor described in this paperis optimized using the Intel Multi Media Extensions and the Intel Streaming SIMD Extensions 2. The presented optimizations allow textures to be compressed real-time which is useful for textures created procedurally at run time or textures streamed from a different format. Furthermore a texture compression scheme is presented which can be used in combination with the real-time DXT compressor to achieve high quality real-time texture compression.

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