In this paper we propose a new HDR texture compression algorithm for real-time rendering. This algorithm is based on our local fractal and wavelet transform for chrominance and luminance encoding, respectively. The proposed algorithm is a block based fixed length coding algorithm and operates on a 4x4 blocks. The blocks are compressed to 8bpp. As the absolute difference between maximum and minimum value for most blocks fits into the LDR range, we can map the HDR values into the integer domain. Then, the block values are encoded by the modified LDR algorithm. In the case of luminance, it is required to store minimum and maximum value per block and to remap the values in the last decompression step.