changelog

按照官方的说法：Cairo is a vector graphics library with cross-device output support. 翻译过来

2006-01-09  Anders Carlsson  <[e-mail]>

        * src/icimage.c:
        (premultiply):
        (INTERPOLATE_PIXEL_256):
        Use uint32_t instead of uint;

2006-01-04  Carl Worth  <[e-mail]>

	* Originally: 2005-10-10  David Reveman  <[e-mail]>

	* src/fbcompose.c: (SourcePictureClassify), (fbFetchSolid),
	(fbFetch), (fbFetchSourcePict), (fbFetchTransformed),
	(fbFetchExternalAlpha), (fbCompositeRect):
	* src/icimage.c: (_pixman_init_gradient),
	(_pixman_create_source_image),
	(pixman_image_create_linear_gradient),
	(pixman_image_create_radial_gradient):
	* src/icimage.h:

	Some major performance improvements to the general composite code
	used for gradients and transformed images. Like fetching of mask
	scanline before source scanline so that only the necessary pixels
	from source needs to be computed in case of gradients or
	transformed images as source. This patch also include some
	gradient specific fixes and performance improvement.

2006-01-04  Carl Worth  <[e-mail]>

	* Originally: 2005-10-10  David Reveman  <[e-mail]>

	* src/pixman.h: Add entries for gradient support.

	* src/icint.h: Add PictureGradientColor.

	* src/icimage.h:
	* src/icimage.c: Add necessary functionality for gradient support.

	* src/fbcompose.c: Enable gradient support.

2005-11-21  Carl Worth  <[e-mail]>

	* src/pixman-remap.h: Remove duplicate definitions of
	pixman_color_to_pixel and pixman_composite.

2005-11-18  Carl Worth  <[e-mail]>

	* src/pixman-remap.h: Remove spurios INT_ prefixes which break the
	build with very recent binutils.

2005-10-09  Billy Biggs  <[e-mail]>

	* src/icimage.h: Make space for the new bits needed by expand.

2005-10-09  Billy Biggs  <[e-mail]>

	reviewed by: davidr, cworth, otaylor

	* src/pixman.h: Add extended repeat modes, copied from XRender.
	* src/icimage.c: (pixman_image_init), (pixman_image_set_repeat),
	(FbClipImageSrc): Cleanup to use the new repeat modes.
	* src/icrect.c: (pixman_fill_rectangles): Be explicit about which
	repeat mode we want.

2005-09-18  Billy Biggs  <[e-mail]>

	* src/fbmmx.c: Only include xmmintrin.h if USE_SSE is defined.

2005-09-15  Billy Biggs  <[e-mail]>

	Bug #4414, reviewed by otaylor, cworth.

	* src/fbmmx.c: Remove CPU detection code.
	* src/fbpict.c (detectCPUFeatures), (fbHaveMMX): Move CPU
	detection code out of the MMX file and into the generic code to
	avoid compiling it with -mmmx and -msse.  Using these options
	causes gcc to use MMX and SSE instructions in the CPU detection
	code which causes SIGILLs on older processors.

2005-08-28  Owen Taylor  <[e-mail]>

	Bug #4260, Reviewed by B. Biggs
 
 	* src/fbcompose.c (fbStore_a8b8g8r8, fbStore_x8b8g8r8): Use & not
 	&& for bitwise AND.
 
 	* src/fbpict.h (fbComposeGetSolid) src/fbpict.c src/fbmmx.c: Take
 	'dest' as an argument, if pict and dest don't match for RGB, BGR,
 	swap result.
	
2005-08-28  Owen Taylor  <[e-mail]>

	* src/fbmmx.c (detectCPUFeatures): Use local labels rather than
	global labels in the assembly, to be robust if the code is inlined
	in multiple places. (#4283, Reported by Marco Manfredini)

2005-08-27  Billy Biggs  <[e-mail]>

	Some fixes for warnings from sparse (Part of bug #4208,
	Kjartan Maraas)

	* src/fbcompose.c (fetchProcForPicture),
	(fetchPixelProcForPicture), (storeProcForPicture), (fbFetchSolid),
	(fbFetch), (fbFetchTransformed), (fbStore), (fbStoreExternalAlpha),
	(fbCompositeRect):
	* src/fbpict.c (pixman_composite):
	* src/icbltone.c (fbLaneTable), (fbBltOne):
	* src/icimage.c (pixman_image_init), (pixman_image_set_transform):
	* src/icrect.c (pixman_fill_rectangles):
	* src/ictrap.c (FbCreateAlphaPicture):   Use NULL not 0.

2005-08-27  Owen Taylor  <[e-mail]>

	* src/fbmmx.c (detectCPUFeatures): Make the code work with
	-fomit-frame-pointer by making sure that %esp isn't modified at
	the point where we access output operands. (#4269, Patch from
	Ronald Wahl)
	
2005-08-22  Owen Taylor  <[e-mail]>

	* src/pixregion.c (pixman_region_union_rect): When width/height
	are 0, copy the src to the dest, don't just return. (#3017)

2005-08-21  Billy Biggs  <[e-mail]>

	* src/pixman-remap.h: Fix a typo in the last change.

2005-08-21  Billy Biggs  <[e-mail]>

	* src/fbpict.c: Remove warning about fbCompositeTrans_0888xnx0888 not
	being tested on big-endian, it's not helpful at this point.

	* src/pixman-remap.h: Only define _cairo_pixman_have_mmx for fbHaveMMX
	when the symbol will actually exist.

2005-08-21  Billy Biggs  <[e-mail]>

	Fix for bug #4140:

	* src/icrect.c: (pixman_fill_rect_8bpp): Dereference the pixel value
	correctly on big endian systems.

2005-08-18  Billy Biggs  <[e-mail]>

	* src/fbmmx.c: (mmxCombineMaskU), (mmxCombineOverU): Special case
	alpha values of 0 and 0xff.
	(fbCompositeSrc_8888x8888mmx): Add an MMX implementation for
	a common operation when using pixman.

	* src/fbmmx.h: Prototype for the new function.

	* src/fbpict.c: (fbComposite): Call the new function where
	appropriate.

2005-08-18  Billy Biggs  <[e-mail]>

	* src/fbcompose.c: (fbFetchTransformed): Special case projective
	transforms so we can avoid doing the expensive 64-bit math.
	Unroll the bilinear interpolation loops for an extra boost.

2005-08-18  Billy Biggs  <[e-mail]>

	* src/fbmmx.c: (fbCompositeSolidMaskSrc_nx8x8888mmx): For the source
	operator, the output should be cleared if the mask is zero.  This
	fixes the MMX code to match the fbcompose code.

	* src/fbpict.c: (pixman_composite): Fix a logic mistake that caused
	the MMX functions not to be used in many cases.

2005-08-17  Billy Biggs  <[e-mail]>

	* src/pixman-remap.h: Only mangle exported symbols.  This is
	sufficient and makes debugging a lot easier.

2005-08-16  Billy Biggs  <[e-mail]>

	* src/Makefile.am: Fix a typo in the last commit.

2005-08-16  Billy Biggs  <[e-mail]>

	* src/Makefile.am: Split the MMX code into a separate libtool
	library to avoid applying the MMX CFLAGS to all of the pixman
	code.  Idea and code from Owen Taylor.

	* src/pixman-remap.h: Update the mangling header file to include
	the MMX symbols.

2005-08-16  Billy Biggs  <[e-mail]>

	* src/fbmmx.c: (shift), (negate), (pix_multiply), (pix_add),
	(expand_alpha), (expand_alpha_rev), (invert_colors), (over),
	(over_rev_non_pre), (in), (in_over), (load8888), (pack8888),
	(store8888), (expand565), (expand8888), (pack565), (pix_add_mul),
	(mmxCombineMaskU), (mmxCombineOverU), (mmxCombineOverReverseU),
	(mmxCombineInU), (mmxCombineInReverseU), (mmxCombineOutU),
	(mmxCombineOutReverseU), (mmxCombineAtopU),
	(mmxCombineAtopReverseU), (mmxCombineXorU), (mmxCombineAddU),
	(mmxCombineSaturateU), (mmxCombineSrcC), (mmxCombineOverC),
	(mmxCombineOverReverseC), (mmxCombineInC), (mmxCombineInReverseC),
	(mmxCombineOutC), (mmxCombineOutReverseC), (mmxCombineAtopC),
	(mmxCombineAtopReverseC), (mmxCombineXorC), (mmxCombineAddC),
	(fbComposeSetupMMX), (fbCompositeSolid_nx8888mmx),
	(fbCompositeSolid_nx0565mmx),
	(fbCompositeSolidMask_nx8888x8888Cmmx),
	(fbCompositeSrc_8888x8x8888mmx), (fbCompositeSrc_x888x8x8888mmx),
	(fbCompositeSolidMask_nx8x8888mmx),
	(fbCompositeSolidMaskSrc_nx8x8888mmx),
	(fbCompositeSolidMask_nx8x0565mmx),
	(fbCompositeSrc_8888RevNPx0565mmx),
	(fbCompositeSrc_8888RevNPx8888mmx),
	(fbCompositeSolidMask_nx8888x0565Cmmx),
	(fbCompositeSrcAdd_8000x8000mmx), (fbCompositeSrcAdd_8888x8888mmx),
	(fbSolidFillmmx), (fbCopyAreammx), (fbCompositeCopyAreammx),
	(detectCPUFeatures), (fbHaveMMX):
	* src/fbmmx.h: Port MMX code from xserver to pixman.

	* src/fbpict.c: (fbOver), (fbOver24), (fbIn), (fbIn24),
	(fbCompositeSolidMask_nx8x8888),
	(fbCompositeSolidMask_nx8888x8888C),
	(fbCompositeSolidMask_nx8x0888), (fbCompositeSolidMask_nx8x0565),
	(fbCompositeSolidMask_nx8888x0565),
	(fbCompositeSolidMask_nx8888x0565C), (fbCompositeSrc_8888x8888),
	(fbCompositeSrc_8888x0888), (fbCompositeSrc_8888x0565),
	(fbCompositeSrcAdd_8000x8000), (fbCompositeSrcAdd_8888x8888),
	(fbCompositeSrcAdd_1000x1000), (fbCompositeSolidMask_nx1xn),
	(fbCompositeTrans_0565xnx0565), (fbCompositeTrans_0888xnx0888),
	(fbCompositeSrcSrc_nxn), (pixman_composite): Add an fbpict.c ported
	from the latest in xserver/fb, including hooks to the MMX code
	where appropriate.  This replaces the old ic.c file.

	* src/ic.c: Replaced by fbpict.c.

	* src/icint.h: Move some X server macros from fbpict.c up into
	icint.h to keep the diff small.

	* src/Makefile.am: Add fbmmx and fbpict.c, remove ic.c.

	* configure.in: Add a check for the MMX intrinsics.  gcc >= 3.4
	is required.

2005-08-12  Billy Biggs  <[e-mail]>

	* src/icrect.c: (pixman_fill_rect_1bpp): Fix to be correct for
	arbitrary xDst values.

2005-08-11  Billy Biggs  <[e-mail]>

	* src/icrect.c: (pixman_fill_rect_1bpp), (pixman_color_rects):
	Add support for filling 1bpp images (used to clear A1 masks).

2005-08-10  Billy Biggs  <[e-mail]>

	reviewed by: cworth and Jeff Muizelaar at various stages

	* src/fbcompose.c: (PictureTransformPoint3d), (fbFetch_a8r8g8b8),
	(fbFetch_x8r8g8b8), (fbFetch_a8b8g8r8), (fbFetch_x8b8g8r8),
	(fbFetch_r8g8b8), (fbFetch_b8g8r8), (fbFetch_r5g6b5),
	(fbFetch_b5g6r5), (fbFetch_a1r5g5b5), (fbFetch_x1r5g5b5),
	(fbFetch_a1b5g5r5), (fbFetch_x1b5g5r5), (fbFetch_a4r4g4b4),
	(fbFetch_x4r4g4b4), (fbFetch_a4b4g4r4), (fbFetch_x4b4g4r4),
	(fbFetch_a8), (fbFetch_r3g3b2), (fbFetch_b2g3r3),
	(fbFetch_a2r2g2b2), (fbFetch_a2b2g2r2), (fbFetch_c8), (fbFetch_a4),
	(fbFetch_r1g2b1), (fbFetch_b1g2r1), (fbFetch_a1r1g1b1),
	(fbFetch_a1b1g1r1), (fbFetch_c4), (fbFetch_a1), (fbFetch_g1),
	(fetchProcForPicture), (fbFetchPixel_a8r8g8b8),
	(fbFetchPixel_x8r8g8b8), (fbFetchPixel_a8b8g8r8),
	(fbFetchPixel_x8b8g8r8), (fbFetchPixel_r8g8b8),
	(fbFetchPixel_b8g8r8), (fbFetchPixel_r5g6b5),
	(fbFetchPixel_b5g6r5), (fbFetchPixel_a1r5g5b5),
	(fbFetchPixel_x1r5g5b5), (fbFetchPixel_a1b5g5r5),
	(fbFetchPixel_x1b5g5r5), (fbFetchPixel_a4r4g4b4),
	(fbFetchPixel_x4r4g4b4), (fbFetchPixel_a4b4g4r4),
	(fbFetchPixel_x4b4g4r4), (fbFetchPixel_a8), (fbFetchPixel_r3g3b2),
	(fbFetchPixel_b2g3r3), (fbFetchPixel_a2r2g2b2),
	(fbFetchPixel_a2b2g2r2), (fbFetchPixel_c8), (fbFetchPixel_a4),
	(fbFetchPixel_r1g2b1), (fbFetchPixel_b1g2r1),
	(fbFetchPixel_a1r1g1b1), (fbFetchPixel_a1b1g1r1),
	(fbFetchPixel_c4), (fbFetchPixel_a1), (fbFetchPixel_g1),
	(fetchPixelProcForPicture), (fbStore_a8r8g8b8), (fbStore_x8r8g8b8),
	(fbStore_a8b8g8r8), (fbStore_x8b8g8r8), (fbStore_r8g8b8),
	(fbStore_b8g8r8), (fbStore_r5g6b5), (fbStore_b5g6r5),
	(fbStore_a1r5g5b5), (fbStore_x1r5g5b5), (fbStore_a1b5g5r5),
	(fbStore_x1b5g5r5), (fbStore_a4r4g4b4), (fbStore_x4r4g4b4),
	(fbStore_a4b4g4r4), (fbStore_x4b4g4r4), (fbStore_a8),
	(fbStore_r3g3b2), (fbStore_b2g3r3), (fbStore_a2r2g2b2),
	(fbStore_c8), (fbStore_a4), (fbStore_r1g2b1), (fbStore_b1g2r1),
	(fbStore_a1r1g1b1), (fbStore_a1b1g1r1), (fbStore_c4), (fbStore_a1),
	(fbStore_g1), (storeProcForPicture), (fbCombineMaskU),
	(fbCombineClear), (fbCombineSrcU), (fbCombineOverU),
	(fbCombineOverReverseU), (fbCombineInU), (fbCombineInReverseU),
	(fbCombineOutU), (fbCombineOutReverseU), (fbCombineAtopU),
	(fbCombineAtopReverseU), (fbCombineXorU), (fbCombineAddU),
	(fbCombineSaturateU), (fbCombineDisjointOutPart),
	(fbCombineDisjointInPart), (fbCombineDisjointGeneralU),
	(fbCombineDisjointOverU), (fbCombineDisjointInU),
	(fbCombineDisjointInReverseU), (fbCombineDisjointOutU),
	(fbCombineDisjointOutReverseU), (fbCombineDisjointAtopU),
	(fbCombineDisjointAtopReverseU), (fbCombineDisjointXorU),
	(fbCombineConjointOutPart), (fbCombineConjointInPart),
	(fbCombineConjointGeneralU), (fbCombineConjointOverU),
	(fbCombineConjointOverReverseU), (fbCombineConjointInU),
	(fbCombineConjointInReverseU), (fbCombineConjointOutU),
	(fbCombineConjointOutReverseU), (fbCombineConjointAtopU),
	(fbCombineConjointAtopReverseU), (fbCombineConjointXorU),
	(fbCombineMaskC), (fbCombineMaskValueC), (fbCombineMaskAlphaC),
	(fbCombineClearC), (fbCombineSrcC), (fbCombineOverC),
	(fbCombineOverReverseC), (fbCombineInC), (fbCombineInReverseC),
	(fbCombineOutC), (fbCombineOutReverseC), (fbCombineAtopC),
	(fbCombineAtopReverseC), (fbCombineXorC), (fbCombineAddC),
	(fbCombineSaturateC), (fbCombineDisjointGeneralC),
	(fbCombineDisjointOverC), (fbCombineDisjointInC),
	(fbCombineDisjointInReverseC), (fbCombineDisjointOutC),
	(fbCombineDisjointOutReverseC), (fbCombineDisjointAtopC),
	(fbCombineDisjointAtopReverseC), (fbCombineDisjointXorC),
	(fbCombineConjointGeneralC), (fbCombineConjointOverC),
	(fbCombineConjointOverReverseC), (fbCombineConjointInC),
	(fbCombineConjointInReverseC), (fbCombineConjointOutC),
	(fbCombineConjointOutReverseC), (fbCombineConjointAtopC),
	(fbCombineConjointAtopReverseC), (fbCombineConjointXorC),
	(fbFetchSolid), (fbFetch), (gradientPixel), (fbFetchSourcePict),
	(fbFetchTransformed), (fbFetchExternalAlpha), (fbStore),
	(fbStoreExternalAlpha), (fbCompositeRect),
	(pixman_compositeGeneral): Port fbcompose.c from xserver into
	pixman.  Add #defines for gradients, convolution filters, and
	indexed colour formats to keep the patch small.  Use pixman
	regions instead of X server regions as appropriate.

	* src/iccompose.c: Remove iccompose.c, replaced by fbcompose.c.

	* src/fbpict.h: Add a slightly-trimmed version of fbpict.h from
	xserver/fb to make the port smaller and cleaner.
	* src/ic.c: Use the redundant fbpict.h defines and add in the
	struct for indexed colour support.
	* src/icimage.h: Remove defines now in fbpict.h.
	* src/pixman-xserver-compat.h: Add some constants and types
	required by fbcompose.c

	* src/Makefile.am: Add fbcompose.c and fbpict.h, remove iccompose.c.

2005-08-10  Keith Packard  <[e-mail]>

	* src/pixregion.c: (pixman_region_union_rect):
	Union with empty rectangle should yield SUCCESS, not FAILURE

2005-08-06  Jeff Muizelaar  <[e-mail]>

	* src/iccompose.c: (fbCombineMaskAlphaC), (fbCombineAtopC),
	(fbCombineXorC), (fbCombineSaturateU), (fbCombineSaturateC),
	(fbCombineDisjointGeneralC), (fbCombineConjointGeneralC):
	Fix problems in render fb implementation found by rendercheck:
	- fbCombineSaturate was pointed at fbCombineDisjointOver, instead of
	  fbCombineDisjointOverReverse as it should.  Instead, point
	  fbCombineDisjointOverReverse at fbCombineSaturate (which is likely
	  to be faster).
	- fix previously-unused fbCombineSaturate implementation.
	- fbCombineMaskAlphaC was just a copy of fbCombineMaskValueC.  Make
	  it do what it's supposed to (return a cs.alpha).
	- fbCombineAtopC didn't invert the source alpha value.
	- fix copy'n'paste errors in fbCombine(Dis/Con)jointGeneralC, also
	  source alpha wasn't treated in a component fashion.

	From anholt.


2005-08-06  Jeff Muizelaar  <[e-mail]>

	* src/iccompose.c: (fbFetch_r8g8b8):
	Temporarily disable the 24bpp WORKING_UNALIGNED_INT because of a crash
	when using electric-fence when accessing hte last pixel of a drawable
	(last pixel is 3 bytes, read it as a 4 byte word, and you're reading one
	 extra pixel, which doesn't normally matter, but does in a few rare cases).
	Should be easy to work around, but that will come later.

	From jaymz

2005-08-05  Jeff Muizelaar  <[e-mail]>

	* src/pixman-xserver-compat.h: Fix fbGetDrawable

	Patch from Billy Biggs <[e-mail]>.

2005-08-05  Jeff Muizelaar  <[e-mail]>

	* src/icint.h: Fix some of the 4 bit per channel PICT definitions