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Fix video on platforms where unaligned access is forbidden.

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Make several optimisations while on it.

	* grub-core/video/fb/fbblit.c (grub_video_fbblit_replace_directN):
	Optimise and use GRUB_VIDEO_FB_ADVANCE_POINTER.
	(grub_video_fbblit_replace_32bit_1bit): Likewise.
	(grub_video_fbblit_replace_24bit_1bit) [!GRUB_HAVE_UNALIGNED_ACCESS]:
	Disable.
	(grub_video_fbblit_replace_16bit_1bit):
	Optimise and use GRUB_VIDEO_FB_ADVANCE_POINTER.
	(grub_video_fbblit_replace_8bit_1bit): Likewise.
	(grub_video_fbblit_replace_BGRX8888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_BGRX8888_RGB888): Likewise.
	(grub_video_fbblit_replace_BGR888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_BGR888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_BGR888_RGB888): Likewise.
	(grub_video_fbblit_replace_RGBX8888_RGB88): Likewise.
	(grub_video_fbblit_replace_RGB888_RGBX888): Likewise.
	(grub_video_fbblit_replace_RGB888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_index_RGBX8888): Likewise.
	(grub_video_fbblit_replace_index_RGB888): Likewise.
	(grub_video_fbblit_blend_BGRA8888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_BGR888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_RGBA8888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_RGB888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_index_RGBA8888): Likewise.
	(grub_video_fbblit_blend_XXXA8888_1bit): Likewise.
	(grub_video_fbblit_blend_XXX888_1bit) [!GRUB_HAVE_UNALIGNED_ACCESS]:
	Disable.
	(grub_video_fbblit_blend_XXX565_1bit):
	Optimise and use GRUB_VIDEO_FB_ADVANCE_POINTER.
	* grub-core/video/fb/fbfill.c (grub_video_fbfill_direct32): Likewise.
	* grub-core/video/fb/fbutil.c (grub_video_fb_get_video_ptr): Return
	void *.
	* grub-core/video/fb/video_fb.c (common_blitter)
	[!GRUB_HAVE_UNALIGNED_ACCESS]: Skip disabled blitters.
	(grub_video_fb_create_render_target_from_pointer)
	[!GRUB_HAVE_UNALIGNED_ACCESS]: Check alignment.
	* include/grub/fbutil.h (grub_video_fb_get_video_ptr): Return void *.
	* include/grub/i386/types.h (GRUB_HAVE_UNALIGNED_ACCESS): New
	definition.
	* include/grub/x86_64/types.h (GRUB_HAVE_UNALIGNED_ACCESS): Likewise.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-12-13 20:07:33 +01:00
parent ace96609b6
commit 12e9d4d152
8 changed files with 206 additions and 85 deletions
Download patch file Download diff file Expand all files Collapse all files

13
include/grub/fbutil.h
View file

@ -31,8 +31,17 @@ struct grub_video_fbblit_info
grub_uint8_t *data;
};
grub_uint8_t *grub_video_fb_get_video_ptr (struct grub_video_fbblit_info *source,
unsigned int x, unsigned int y);
void *grub_video_fb_get_video_ptr (struct grub_video_fbblit_info *source,
unsigned int x, unsigned int y);
/* Advance pointer by VAL bytes. If there is no unaligned access available,
VAL has to be divisible by size of pointed type.
*/
#ifdef GRUB_HAVE_UNALIGNED_ACCESS
#define GRUB_VIDEO_FB_ADVANCE_POINTER(ptr, val) ((ptr) = (typeof (ptr)) ((char *) ptr + val))
#else
#define GRUB_VIDEO_FB_ADVANCE_POINTER(ptr, val) ((ptr) += (val) / sizeof (*(ptr)))
#endif
grub_video_color_t get_pixel (struct grub_video_fbblit_info *source,
unsigned int x, unsigned int y);

2
include/grub/i386/types.h
View file

@ -28,4 +28,6 @@
/* i386 is little-endian. */
#undef GRUB_TARGET_WORDS_BIGENDIAN
#define GRUB_HAVE_UNALIGNED_ACCESS 1
#endif /* ! GRUB_TYPES_CPU_HEADER */

2
include/grub/x86_64/types.h
View file

@ -28,4 +28,6 @@
/* x86_64 is little-endian. */
#undef GRUB_TARGET_WORDS_BIGENDIAN
#define GRUB_HAVE_UNALIGNED_ACCESS 1
#endif /* ! GRUB_TYPES_CPU_HEADER */