936                back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];  in png_init_read_transformations()
937                back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];  in png_init_read_transformations()
938                back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];  in png_init_read_transformations()
1002                      v = png_ptr->gamma_to_1[palette[i].red];  in png_init_read_transformations()
1006                      v = png_ptr->gamma_to_1[palette[i].green];  in png_init_read_transformations()
1010                      v = png_ptr->gamma_to_1[palette[i].blue];  in png_init_read_transformations()
1456          png_ptr->gamma_to_1, png_ptr->gamma_16_table,  in png_do_read_transformations()
2342             if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)  in png_do_rgb_to_gray()
2349                   png_byte red   = png_ptr->gamma_to_1[*(sp++)];  in png_do_rgb_to_gray()
2350                   png_byte green = png_ptr->gamma_to_1[*(sp++)];  in png_do_rgb_to_gray()
2351                   png_byte blue  = png_ptr->gamma_to_1[*(sp++)];  in png_do_rgb_to_gray()
2448             if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)  in png_do_rgb_to_gray()
2454                   png_byte red   = png_ptr->gamma_to_1[*(sp++)];  in png_do_rgb_to_gray()
2455                   png_byte green = png_ptr->gamma_to_1[*(sp++)];  in png_do_rgb_to_gray()
2456                   png_byte blue  = png_ptr->gamma_to_1[*(sp++)];  in png_do_rgb_to_gray()
2629          back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];  in png_correct_palette()
2630          back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];  in png_correct_palette()
2631          back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];  in png_correct_palette()
2686                v = png_ptr->gamma_to_1[png_ptr->palette[i].red];  in png_correct_palette()
2690                v = png_ptr->gamma_to_1[png_ptr->palette[i].green];  in png_correct_palette()
2694                v = png_ptr->gamma_to_1[png_ptr->palette[i].blue];  in png_correct_palette()
2802    png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,  in png_do_background()  argument
3155                if (gamma_to_1 != NULL && gamma_from_1 != NULL &&  in png_do_background()
3177                         v = gamma_to_1[*sp];  in png_do_background()
3298                if (gamma_to_1 != NULL && gamma_from_1 != NULL &&  in png_do_background()
3324                         v = gamma_to_1[*sp];  in png_do_background()
3327                         v = gamma_to_1[*(sp + 1)];  in png_do_background()
3330                         v = gamma_to_1[*(sp + 2)];  in png_do_background()
4204         png_ptr->gamma_to_1 = (png_bytep)png_malloc(png_ptr,  in png_build_gamma_table()
4209            png_ptr->gamma_to_1[i] = (png_byte)(pow((double)i / 255.0,  in png_build_gamma_table()