lines.c revision 5e3bc0c2a2bcdf59949410f94c9b705fc1281ce8 
1/* $Id: lines.c,v 1.23 2000/11/22 07:32:17 joukj Exp $ */
2
3/*
4 * Mesa 3-D graphics library
5 * Version:  3.5
6 *
7 * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27
28#ifdef PC_HEADER
29#include "all.h"
30#else
31#include "glheader.h"
32#include "context.h"
33#include "depth.h"
34#include "feedback.h"
35#include "lines.h"
36#include "macros.h"
37#include "mmath.h"
38#include "texstate.h"
39#include "mtypes.h"
40#endif
41
42
43
44void
45_mesa_LineWidth( GLfloat width )
46{
47   GET_CURRENT_CONTEXT(ctx);
48   if (width<=0.0) {
49      gl_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
50      return;
51   }
52   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glLineWidth");
53
54   if (ctx->Line.Width != width) {
55      ctx->Line.Width = width;
56      ctx->_TriangleCaps &= ~DD_LINE_WIDTH;
57      if (width != 1.0) ctx->_TriangleCaps |= DD_LINE_WIDTH;
58
59      ctx->NewState |= _NEW_LINE;
60
61      if (ctx->Driver.LineWidth)
62         (*ctx->Driver.LineWidth)(ctx, width);
63   }
64}
65
66
67
68void
69_mesa_LineStipple( GLint factor, GLushort pattern )
70{
71   GET_CURRENT_CONTEXT(ctx);
72   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glLineStipple");
73   ctx->Line.StippleFactor = CLAMP( factor, 1, 256 );
74   ctx->Line.StipplePattern = pattern;
75
76   ctx->NewState |= _NEW_LINE;
77
78   if (ctx->Driver.LineStipple)
79      ctx->Driver.LineStipple( ctx, factor, pattern );
80}
81
82
83