Basic Color Science For Graphics Engineer

For more than a decade, we have been doing HDR rendering in our game engines, which means the intermediate render targets won’t be limited by the precision of the color formats. It is an even more important concept after the emerging of physically based rendering, which is almost what everyone does these days. However, after so much effort rendering everything in linear color space, it is quite wasteful that we can only display colors with only limited chromaticity and luminance defined by sRGB space due to limitations of LDR monitor and TVs.