gfx/cairo/README
author Adrian Johnson <ajohnson@redneon.com>, Andrea Canciani <ranma42@gmail.com>
Tue, 23 Oct 2012 12:43:29 +1300
changeset 111225 20279718e3c7a6f9f48aa6d4c86e4bf3c7e29af3
parent 111224 40e9ab16d3b23f7e0bb173f78089bf7f754c3032
child 111244 2263f8c760ff526d355e7c43cad0f65c3e58ea86
permissions -rw-r--r--
Bug 717178. Part 2: Import changesets eb29a25d, 6e3e3291 and 101fab7c from upstream. r=jrmuizel ====== From eb29a25dd6dddc511388bf883c9b95843ecdb823 Mon Sep 17 00:00:00 2001 From: Adrian Johnson <ajohnson@redneon.com> Date: Tue, 16 Nov 2010 13:18:39 +0000 Subject: win32: Use a font_face hash table to provide unique font faces Similar to the freetype and toy font backends, use a hash table to map logfont,hfont to font faces. This fixes the multiple embedding of the same font in PDF. https://bugs.freedesktop.org/show_bug.cgi?id=24849 ====== From 6e3e329170ab4b96bc0d587c8071e869e228e758 Mon Sep 17 00:00:00 2001 From: Adrian Johnson <ajohnson@redneon.com> Date: Thu, 18 Nov 2010 12:37:45 +0000 Subject: win32: fix font_face hashing some bugs were discovered while testing with firefox ====== From 101fab7cd8a90f7cf3d8113c792b3f8c2a9afb7d Mon Sep 17 00:00:00 2001 From: Andrea Canciani <ranma42@gmail.com> Date: Wed, 15 Jun 2011 09:37:36 +0000 Subject: win32-font: Improve static data reset function The hashtable is guaranteed to only contain font faces which are currently referenced, hence there is no need to remove any font face when it is reset (just like for toy-font). This makes the function simpler and fixes the assertion Assertion failed: predicate != NULL, file cairo-hash.c, line 373 hit by multiple tests (the first one being "clear"). See https://bugs.freedesktop.org/show_bug.cgi?id=38049 ======

Snapshots of cairo and glitz for mozilla usage.

We only include the relevant parts of each release (generally, src/*.[ch]),
as we have Makefile.in's that integrate into the Mozilla build system.  For
documentation and similar, please see the official tarballs at
http://www.cairographics.org/.

VERSIONS:

  cairo (12d521df8acc483b2daa844d4f05dc2fe2765ba6)
  pixman (0.24.2)

==== Patches ====

Some specific things:

max-font-size.patch: Clamp freetype font size to 1000 to avoid overflow issues

win32-logical-font-scale.patch: set CAIRO_WIN32_LOGICAL_FONT_SCALE to 1

nonfatal-assertions.patch: Make assertions non-fatal

buggy-repeat.patch: Unconditionally turn on buggy-repeat handling to bandaid bug 413583.

cairo-version-fixes.patch: fix up cairo-version.c/cairo-version.h for in-place builds

win32-ddb-dib.patch: fix for bug 455513; not upstream yet pending feebdack

win32-vertically-offset-glyph.patch: bug 454098; vertical positioning errors when drawing glyph runs including delta-y offsets on screen via GDI

ignore-rank0.patch: bug 474886; Not redrawing the background when changing page on flickr

win32-canvas-glyph-position.patch: bug 475092; horizontal positioning errors when drawing glyph runs with delta-y offsets to canvas through win32-font

win32-cleartype-clipping.patch: bug 445087; some glyphs are clipped, mainly on right-hand edge, when ClearType is enabled and drawing to RGBA canvas

on-edge.patch: reverts the in-fill semantic change.

wrap-source_image.patch: make sure we don't free the source image until we're done with it.

zero-sized.patch: deal with zero sized surface in ways less likely to crash.

text-path-filling-threshold.patch: use path filling instead of platform glyph rasterization at a smaller size threshold of 256 device pixels, if the backend supports native filling (which we assume will be fast).

zombie-face.patch: bug 486974; leak and possible crash with @font-face{src:url()}.  Upstream commit: 0238fe2cafea2e1ed19bb222117bd73ee6898d4d

win32-raster.patch: bug 498689; use scanline rasterizer on win32

quartz-falback.patch: try to fix Quartz fallback-to-pixman path; possiby incorrect and obsoleted by Andrea Canciani patch

quartz-repeating-radial-gradients.patch: use Quartz to render repeating radial gradients instead of falling back

quartz-const-globals.patch: make some Quartz color function data const globals instead of local variables

quartz-minimze-gradient-repeat.patch: reduce the number of gradient stop repetitions we use, to improve quality of Quartz's gradient rendering

quartz-first-stop.patch: return the first stop for negative positions on the gradient line of a nonrepeating linear gradient

quartz-glyph-extents.patch: bug 534260; work around incorrect glyph extents returned by quartz for anomalous empty glyphs

quartz-state.patch: bug 522859; refactor cairo-quartz-surface so that state local to a drawing operation is stored in a cairo_quartz_drawing_state_t instead of the surface

quartz-cache-CGImageRef.patch: cache CGImageRef for a CGBitmapContext; when we reuse it, Quartz will cache stuff, improving performance

quartz-remove-snapshot.patch: remove broken implementation of backend snapshot

quartz-cglayers.patch: add support for cairo surfaces backed by CGLayers

quartz-cglayers-fix-fallback.patch: Bug 572912; fix bug in fallback code in previous patch

quartz-get-image.patch: Bug 575521; add a way to get the image surface associated with a surface

quartz-create-for-data.patch: Bug 575521; add a way to create quartz surfaces backed with application-provided data

premultiply-alpha-solid-gradients.patch: bug 539165; multiply the solid color by the alpha component before using it for a solid surface

xlib-initialize-members.path: bug 548793; initialize XRender version if the server doesn't have the extension

remove-comma: remove a comma from enum

d2d.patch: add d2d support

fix-zero-len-graident.patch: fix zero length gradients

fix-clip-copy.patch: fix clip copying

fix-clip-region-simplification.patch: fixes a bug in clip region simplifications

expand-in-stroke-limits.patch: expand the in-stroke limits to avoid a bug

d2d-dwrite.patch: update the d2d/dwrite stuff

add-a-stash-of-cairo_t-s.patch: use the stash to avoid malloc/freeing cairo_t's

bgr.patch: fix image wrapping

disable-server-graidents.patch: disable server-side gradients

clip-invariant.patch: make rasterization closer to being clip invariant

fix-unnecessary-fallback.patch: avoid unnecessary fallback

handle-a1-upload.patch: handle a1 image uploads through converter

surface-clipper.patch: remove an incorrect optimization

fix-win32-show-glyphs-clipping.patch: fix a clipping bug

native-clipping.patch: Add support for a native clipping api

quartz-is-clear.patch: Propagate the quartz is_clear flag.

cairo-qt-compile.patch: Fix compile error, return not reached, and clone_similar interface

dwrite-glyph-extents.patch: Add padding to extents of antialiased glyphs, to avoid unwanted clipping. (bug 568191)

fix-ps-output.patch: PS: Add missing 'q' when resetting clip path (42b5cac7668625c9761113ff72b47af5cfd10377)

ensure-text-flushed.patch: PDF-operators: ensure text operations flushed before emitting clip (42b5cac7668625c9761113ff72b47af5cfd10377)

fix-xcopyarea-with-clips.patch: 5d07307b691afccccbb15f773d5231669ba44f5a

cairo-x-visual.patch: make valid visua for cairo_xlib_surface_create_with_xrender_format (55037bfb2454a671332d961e061c712ab5471580)

win32-transparent-surface.patch: add API so we can create a win32 surface for an HDC and indicate the surface has an alpha channel

cairo_qt_glyphs.patch: Drop X surface from Qt surface, add support for new qt glyphs api

empty-clip-rectangles.patch: f2fa15680ec3ac95cb68d4957557f06561a7dc55

empty-clip-extents.patch: b79ea8a6cab8bd28aebecf6e1e8229d5ac017264

clip-rects-surface-extents.patch: 108b1c7825116ed3f93aa57384bbd3290cdc9181

disable-previous-scaled-font-cache.patch: Disable the previous-scaled-font-cache until we figure out our ctm handling (#583035)
 
copyarea-with-alpha.patch: support simple overlapping self copies in (some) color_alpha xlib surfaces. https://bugs.freedesktop.org/show_bug.cgi?id=29250

fix-clip-test.patch: Use y 498c10032ea3f8631a928cd7df96766f2c8ddca4

quartz-refactor-surface-setup.patch: Extract the surface-source setup chunk of _cairo_quartz_setup_state into its own function

quartz-fix-PAD.patch: Treat PAD like NONE instead of REPEAT

quartz-mask-non-OVER.patch: Don't use CGContextSetAlpha to optimize alpha masking for non-OVER operators

quartz-layers-content.patch: Store cairo content type in CGLayer surfaces

quartz-optimize-OVER.patch: Optimize OVER to SOURCE for opaque patterns

quartz-check-imageSurfaceEquiv.patch: Drop cairo_quartz_surface_t's "imageSurfaceEquiv" member variable if we have problems creating it

disable-subpixel-antialiasing.patch: Add API to disable subpixel antialiasing completely for a target surface

tee-surfaces-pointwise.patch: Composite tee subsurfaces pointwise if possible

pattern_get_surface-no-error.patch: Don't put a pattern into error if cairo_pattern_get_surface fails

missing-cairo-clip-init.diff: Missing cairo_clip_init call in cairo_gstate_show_text_glyphs lead to crash

fix-cairo-win32-print-gdi-error.diff: Don't use fwprintf with char* format.  Flush stderr so that all error messages appears before exit.

pixman-image-transform.patch: Reset the transform on pixman images when using them as destinations.

fix-cairo-surface-wrapper-flush-build-warning.patch: Ensures that _cairo_surface_wrapper_flush always returns a status, to silence the build warning

fixup-unbounded.patch: Hack to work around bad assumption.

quartz-get-image-performance: Make cairo_quartz_get_image faster in the failure case by not flushing unless we are going to succeed.

lround-c99-only.patch: Only use lround in C99 programs.

unicode-printing.patch: Print as unicode (bug 454532)

quartz-mark-dirty.patch: Add a quartz implementation of mark_dirty_rectangle (bug 715704)

expose-snapshot.patch: Make functions to add snapshots public, as well as allow creating null surfaces publically. (bug 715658)

fix-build-with-Werror=return-type.patch: Fix builds with -Werror=return-type (bug 737909)

avoid-extend-none.patch: Avoid incorrectly using EXTEND_NONE (bug 751668)

win32-ExtCreatePen-zero-size.patch: Don't pass zero width or dash lengths to ExtCreatePen (bug 768348)

d2d-repeating-gradients.patch: Minimize number of gradient stops added to handle repeating with path fills (bug 768775)

xlib-glyph-clip-region.patch: bug 709477, addressed upstream by be1ff2f45fdbc69537e513834fcffa0435e63073

gdi-RGB24-ARGB32.patch: bug 788794

dwrite-font-printing.patch: bug 468568; don't substitute a GDI font for a DWrite font if the name tables aren't equal

d2d-gradient-ensure-stops.patch: bug 792903, ensure we don't set num_stops to 0

setlcdfilter_in_tree.patch: bug 790139; force cairo to use FT_Library_SetLcdFilter from our in tree library rather than picking it up from the system

dwrite-font-match-robustness.patch: bug 717178, don't crash when _name_tables_match is passed a nil scaled-font

win32-font-hashtable.patch: bug 717178, use a hashtable to memoize creation of win32 fonts

==== pixman patches ====

pixman-android-cpu-detect.patch: Add CPU detection support for Android, where we can't reliably access /proc/self/auxv.

pixman-rename-and-endian.patch: include cairo-platform.h for renaming of external symbols and endian macros

NOTE: we previously supported ARM assembler on MSVC, this has been removed because of the maintenance burden

pixman-export.patch: use cairo_public for PIXMAN_EXPORT to make sure pixman symbols are not exported in libxul

pixman-limits.patch: include limits.h for SIZE_MAX

pixman-lowres-interp.patch: Use lower quality interpolation for more speed.

pixman-bilinear-fastpath.patch: Bilinear fast paths for non-neon

pixman-16-bit-pipeline.patch: 16 bit pipeline for dithering

pixman-dither.patch: Add dithering of 16 bit gradients

==== disable printing patch ====

disable-printing.patch:  allows us to use NS_PRINTING to disable printing.