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/* $Id: lines.c,v 1.14 2002/02/14 01:59:31 dawes Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifdef PC_HEADER
#include "all.h"
#else
#include "glheader.h"
#include "context.h"
#include "depth.h"
#include "lines.h"
#include "macros.h"
#include "mmath.h"
#include "texstate.h"
#include "mtypes.h"
#endif
void
_mesa_LineWidth( GLfloat width )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (width<=0.0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
return;
}
if (ctx->Line.Width == width)
return;
FLUSH_VERTICES(ctx, _NEW_LINE);
ctx->Line.Width = width;
ctx->Line._Width = CLAMP(width,
ctx->Const.MinLineWidth,
ctx->Const.MaxLineWidth);
if (width != 1.0)
ctx->_TriangleCaps |= DD_LINE_WIDTH;
else
ctx->_TriangleCaps &= ~DD_LINE_WIDTH;
if (ctx->Driver.LineWidth)
(*ctx->Driver.LineWidth)(ctx, width);
}
void
_mesa_LineStipple( GLint factor, GLushort pattern )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
factor = CLAMP( factor, 1, 256 );
if (ctx->Line.StippleFactor == factor &&
ctx->Line.StipplePattern == pattern)
return;
FLUSH_VERTICES(ctx, _NEW_LINE);
ctx->Line.StippleFactor = factor;
ctx->Line.StipplePattern = pattern;
if (ctx->Driver.LineStipple)
ctx->Driver.LineStipple( ctx, factor, pattern );
}
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