Patent ID: 8319789

Claim:
An image generating apparatus comprising: a storage area, including an integrated lookup table area divided into a plurality of blocks forming an integrated lookup table with a plurality of individual color lookup tables with different color palettes being respectively and adjacently assigned to the plurality of blocks; a configuration register group, in which configuration information related to a block number specifying the location where each block is assigned in the integrated lookup table is stored in a predetermined register among a plurality of registers contained in the configuration register group; and a reference unit, which receives the texel coordinate representing a specified color index from an arithmetic unit through a load command input to the arithmetic unit and which converts the color index specified into an actual color value, wherein, when any one of blocks in the integrated lookup table is specified by the block number, the reference unit acquires from the predetermined register the location where the specified block is assigned in the integrated lookup table, and selectively refers to the specific individual color lookup table in the integrated lookup table by directly referring to the location acquired from the predetermined register so as to acquire color reference information using the color index received, so as to convert the color index into the actual color value, and wherein the specific individual color lookup table may be maintained for referencing upon the arithmetic unit receiving further load commands unless otherwise indicated by the configuration register group.