neomagic/engine/nm_general.c

429 status_t nm_general_validate_pic_size (display_mode *target, uint32 *bytes_per_row, bool *acc_mode)
447 		switch (target->space)
459 				LOG(8,("INIT: unsupported colorspace: 0x%08x\n", target->space));
464 		switch (target->space)
471 				LOG(8,("INIT: unsupported colorspace: 0x%08x\n", target->space));
481 	if ((si->ps.card_type < NM2200) && (target->space == B_RGB24)) *acc_mode = false;
487 		if (target->virtual_width > 1024) *acc_mode = false;
492 		if (target->virtual_width > 1600) *acc_mode = false;
496 	if (target->virtual_height > 1024) *acc_mode = false;
502 		switch(target->space)
505 			if (target->virtual_width > 16368)
506 				target->virtual_width = 16368;
510 			if (target->virtual_width > 8184)
511 				target->virtual_width = 8184;
514 			if (target->virtual_width > 5456)
515 				target->virtual_width = 5456;
522 		if (target->virtual_height > 65535) target->virtual_height = 65535;
535 			switch (target->space)
546 			video_pitch = ((target->virtual_width + acc_mask) & ~acc_mask);
562 			bytes_X_height = (depth >> 3) * target->virtual_height;
565 			if (target->virtual_width == 640) video_pitch = 640;
567 				if (target->virtual_width <= 800)
570 						(target->virtual_width < (800 - crtc_mask)))
576 					if (target->virtual_width <= 1024)
579 							(target->virtual_width < (1024 - crtc_mask)))
585 						if (target->virtual_width <= 1152)
588 								(target->virtual_width < (1152 - crtc_mask)))
594 							if (target->virtual_width <= 1280)
597 									(target->virtual_width < (1280 - crtc_mask)))
603 								if (target->virtual_width <= 1600)
606 										(target->virtual_width < (1600 - crtc_mask)))
614 		video_pitch = ((target->virtual_width + crtc_mask) & ~crtc_mask);
617 														video_pitch, target->space));
618 	if (target->virtual_width != video_pitch)
620 											(video_pitch - target->virtual_width)));