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1df0b001b5
The additional 8 bits of integer allows device space to be 256 times larger before applications need to start worrying about any issues with overflow. So this should help in many cases. And the loss of 8 bits of sub-pixel precision shouldn't cause any harm at all---16 was really much more than necessary. With this change the details of rasterization for several tests are changed slightly, (particularly on arcs, for example), so many reference images are updated here. NOTE: This change is currently breaking get-path-extents for ps/pdf/svg as well as push-group for ps. We do not yet know the reasons for these new failures.
70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
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/* Cairo - a vector graphics library with display and print output
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*
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* Copyright © 2007 Mozilla Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is Mozilla Corporation
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*
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* Contributor(s):
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* Vladimir Vukicevic <vladimir@pobox.com>
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*/
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#ifndef CAIRO_FIXED_TYPE_PRIVATE_H
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#define CAIRO_FIXED_TYPE_PRIVATE_H
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#include "cairo-wideint-type-private.h"
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/*
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* Fixed-point configuration
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*/
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typedef int32_t cairo_fixed_16_16_t;
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typedef cairo_int64_t cairo_fixed_32_32_t;
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typedef cairo_int64_t cairo_fixed_48_16_t;
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typedef cairo_int128_t cairo_fixed_64_64_t;
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typedef cairo_int128_t cairo_fixed_96_32_t;
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/* Eventually, we should allow changing this, but I think
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* there are some assumptions in the tesselator about the
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* size of a fixed type. For now, it must be 32.
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*/
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#define CAIRO_FIXED_BITS 32
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/* The number of fractional bits. Changing this involves
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* making sure that you compute a double-to-fixed magic number.
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* (see below).
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*/
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#define CAIRO_FIXED_FRAC_BITS 8
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/* A signed type %CAIRO_FIXED_BITS in size; the main fixed point type */
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typedef int32_t cairo_fixed_t;
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/* An unsigned type of the same size as #cairo_fixed_t */
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typedef uint32_t cairo_fixed_unsigned_t;
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#endif /* CAIRO_FIXED_TYPE_PRIVATE_H */
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