9231 #define ALPHA_MODE_OFFSET 4  macro
9294    if (dp->do_background >= ALPHA_MODE_OFFSET)  in gamma_info_imp()
9299          int mode = dp->do_background - ALPHA_MODE_OFFSET;  in gamma_info_imp()
9549       case ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD:  in gamma_component_compose()
9550       case ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN:  in gamma_component_compose()
9555       case ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED:  in gamma_component_compose()
9614       || do_background == ALPHA_MODE_OFFSET + PNG_ALPHA_PNG  in gamma_component_validate()
9618       && do_background != ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN  in gamma_component_validate()
9692          if (do_background != ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN)  in gamma_component_validate()
9706          if (do_background == ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED &&  in gamma_component_validate()
10000                case ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD:  in gamma_component_validate()
10001                case ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN:  in gamma_component_validate()
10002                case ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED:  in gamma_component_validate()
10808       case ALPHA_MODE_OFFSET + PNG_ALPHA_PNG:  in gamma_composition_test()
10812       case ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD:  in gamma_composition_test()
10816       case ALPHA_MODE_OFFSET + PNG_ALPHA_OPTIMIZED:  in gamma_composition_test()
10820       case ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN:  in gamma_composition_test()
10897    if (do_background < ALPHA_MODE_OFFSET)  in gamma_composition_test()
11138       for (do_background = ALPHA_MODE_OFFSET + PNG_ALPHA_STANDARD;  in perform_gamma_test()
11139          do_background <= ALPHA_MODE_OFFSET + PNG_ALPHA_BROKEN && !fail(pm);  in perform_gamma_test()