AUTOMATIC GAIN CONTROL, BRIGHTNESS COMPRESSION, AND SUPER-INTENSITY SAMPLES

摘要

A filtering engine may read samples from a sample buffer and spatially filter (e.g., convolve) the samples to generate pixels. The pixels may have a high dynamic range of luminance. Thus, the filtering engine may apply automatic gain control and/or dynamic range compression on pixel luminance or pixel color. A rendering engine may generate the samples in response to received graphics data and store the samples in the sample buffer. A sample may include one or more data fields which represent color (or intensity) information. The data field may include exponent information (e.g., an amplification control bit) and a mantissa. The exponent information may determine an extent to which the mantissa is amplified (e.g., left shifted) in the filtering engine.