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Avoid unnecessary memcpy of whole video buffer.

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* grub-core/video/fb/video_fb.c (dirty): New struct.
	(framebuffer): Add members current_dirty and previous_dirty.
	(dirty): New function.
	(grub_video_fb_fill_rect): Update dirty.
	(common_blitter): Likewise.
	(grub_video_fb_scroll): Likewise.
	(doublebuf_blit_update_screen): Copy only dirty part.
	(doublebuf_pageflipping_update_screen): Likewise.
	(grub_video_fb_doublebuf_blit_init): Init dirty.
	(doublebuf_pageflipping_init): Likewise.
	(grub_video_fb_setup): Likewise.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2012-06-19 19:34:51 +02:00
parent e169a1805f
commit 52f0f64384
2 changed files with 92 additions and 8 deletions
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@ -1,3 +1,19 @@
2012-06-19 Vladimir Serbinenko <phcoder@gmail.com>
Avoid unnecessary memcpy of whole video buffer.
* grub-core/video/fb/video_fb.c (dirty): New struct.
(framebuffer): Add members current_dirty and previous_dirty.
(dirty): New function.
(grub_video_fb_fill_rect): Update dirty.
(common_blitter): Likewise.
(grub_video_fb_scroll): Likewise.
(doublebuf_blit_update_screen): Copy only dirty part.
(doublebuf_pageflipping_update_screen): Likewise.
(grub_video_fb_doublebuf_blit_init): Init dirty.
(doublebuf_pageflipping_init): Likewise.
(grub_video_fb_setup): Likewise.
2012-06-19 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/net/drivers/ieee1275/ofnet.c (search_net_devices): Decrease