2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38 * \param width line width in pixels.
43 _mesa_LineWidth( GLfloat width
)
45 GET_CURRENT_CONTEXT(ctx
);
46 ASSERT_OUTSIDE_BEGIN_END(ctx
);
49 _mesa_error( ctx
, GL_INVALID_VALUE
, "glLineWidth" );
53 if (ctx
->Line
.Width
== width
)
56 FLUSH_VERTICES(ctx
, _NEW_LINE
);
57 ctx
->Line
.Width
= width
;
60 ctx
->_TriangleCaps
|= DD_LINE_WIDTH
;
62 ctx
->_TriangleCaps
&= ~DD_LINE_WIDTH
;
64 if (ctx
->Driver
.LineWidth
)
65 ctx
->Driver
.LineWidth(ctx
, width
);
70 * Set the line stipple pattern.
72 * \param factor pattern scale factor.
73 * \param pattern bit pattern.
75 * \sa glLineStipple().
77 * Updates gl_line_attrib::StippleFactor and gl_line_attrib::StipplePattern. On
78 * change flushes the vertices and notifies the driver via
79 * the dd_function_table::LineStipple callback.
82 _mesa_LineStipple( GLint factor
, GLushort pattern
)
84 GET_CURRENT_CONTEXT(ctx
);
85 ASSERT_OUTSIDE_BEGIN_END(ctx
);
87 factor
= CLAMP( factor
, 1, 256 );
89 if (ctx
->Line
.StippleFactor
== factor
&&
90 ctx
->Line
.StipplePattern
== pattern
)
93 FLUSH_VERTICES(ctx
, _NEW_LINE
);
94 ctx
->Line
.StippleFactor
= factor
;
95 ctx
->Line
.StipplePattern
= pattern
;
97 if (ctx
->Driver
.LineStipple
)
98 ctx
->Driver
.LineStipple( ctx
, factor
, pattern
);
103 * Initialize the context line state.
105 * \param ctx GL context.
107 * Initializes __GLcontextRec::Line and line related constants in
108 * __GLcontextRec::Const.
111 _mesa_init_line( GLcontext
* ctx
)
113 ctx
->Line
.SmoothFlag
= GL_FALSE
;
114 ctx
->Line
.StippleFlag
= GL_FALSE
;
115 ctx
->Line
.Width
= 1.0;
116 ctx
->Line
.StipplePattern
= 0xffff;
117 ctx
->Line
.StippleFactor
= 1;