Processing of color graphics data

A method of processing data representing pixel colour, the data for each pixel being arranged as a luminance component and colour difference components, wherein the method comprises:

• dividing the data into first and second data portions, the first data portion comprising the luminance components and the second data portion comprising the colour difference components;
• deriving first and second instructions from a combined instruction word;
• processing the first and second data portions in parallel using first and second parallel processors within a processor architecture, the first and second parallel processors operating according to the first and second instructions, respectively;
• and
• combining the processed first and second data portions to provide processed pixel colour data;
• wherein the luminance components are arranged in lanes of an operand to which an instruction is to be applied in the first processor, and the colour difference components are arranged in lanes of an operand to which an instruction is to be applied in the second processor.