modules/color/amdgpu_color_gamma.c

56  * the same number of points (NUM_PTS_IN_REGION) and in each region every point
269 /* one-time pre-compute dePQ values - only for max pixel value 125 FP16 */
601 		struct gamma_point *point;
631 			point = &coeff[i].r;
636 			point = &coeff[i].g;
641 			point = &coeff[i].b;
648 			point->coeff = dc_fixpt_div(
656 			point->coeff = dc_fixpt_zero;
658 			point->coeff = dc_fixpt_from_int(2);
664 		point->left_index = index_left;
665 		point->right_index = index_right;
666 		point->pos = hw_pos;
680 	const struct gamma_point *point;
685 		point = &coeff->r;
687 		point = &coeff->g;
689 		point = &coeff->b;
691 	if ((point->left_index < 0) || (point->left_index > max_index)) {
696 	if ((point->right_index < 0) || (point->right_index > max_index)) {
701 	if (point->pos == HW_POINT_POSITION_MIDDLE)
705 					point->coeff,
707 						rgb[point->right_index].r,
708 						rgb[point->left_index].r)),
709 				rgb[point->left_index].r);
713 					point->coeff,
715 						rgb[point->right_index].g,
716 						rgb[point->left_index].g)),
717 				rgb[point->left_index].g);
721 					point->coeff,
723 						rgb[point->right_index].b,
724 						rgb[point->left_index].b)),
725 				rgb[point->left_index].b);
726 	else if (point->pos == HW_POINT_POSITION_LEFT) {
970 	// only max used, we don't adjust min luminance
978 	rgb += 32; // first 32 points have problems with fixed point, too small
983 				/*max content is equal 1 */
1185 	struct fixed31_32 max = dc_fixpt_one;
1200 		if (dc_fixpt_lt(max, ramp->entries.red[i]))
1201 			max = ramp->entries.red[i];
1203 		if (dc_fixpt_lt(max, ramp->entries.green[i]))
1204 			max = ramp->entries.green[i];
1206 		if (dc_fixpt_lt(max, ramp->entries.blue[i]))
1207 			max = ramp->entries.blue[i];
1213 	offset = dc_fixpt_add(min, max);
1477 	/* TODO: float point case */