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55 pj 1
/* $Id: lines.c,v 1.1 2003-02-28 11:42:03 pj Exp $ */
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/*
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 * Mesa 3-D graphics library
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 * Version:  3.5
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 *
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 * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included
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 * in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 */
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#include "glheader.h"
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#include "context.h"
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#include "depth.h"
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#include "lines.h"
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#include "macros.h"
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#include "mmath.h"
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#include "texstate.h"
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#include "mtypes.h"
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void
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_mesa_LineWidth( GLfloat width )
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{
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   GET_CURRENT_CONTEXT(ctx);
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   ASSERT_OUTSIDE_BEGIN_END(ctx);
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   if (width<=0.0) {
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      _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
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      return;
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   }
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   if (ctx->Line.Width == width)
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      return;
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   FLUSH_VERTICES(ctx, _NEW_LINE);
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   ctx->Line.Width = width;
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   ctx->Line._Width = CLAMP(width,
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                            ctx->Const.MinLineWidth,
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                            ctx->Const.MaxLineWidth);
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   if (width != 1.0)
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      ctx->_TriangleCaps |= DD_LINE_WIDTH;
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   else
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      ctx->_TriangleCaps &= ~DD_LINE_WIDTH;
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   if (ctx->Driver.LineWidth)
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      (*ctx->Driver.LineWidth)(ctx, width);
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}
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void
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_mesa_LineStipple( GLint factor, GLushort pattern )
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{
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   GET_CURRENT_CONTEXT(ctx);
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   ASSERT_OUTSIDE_BEGIN_END(ctx);
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   factor = CLAMP( factor, 1, 256 );
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   if (ctx->Line.StippleFactor == factor &&
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       ctx->Line.StipplePattern == pattern)
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      return;
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   FLUSH_VERTICES(ctx, _NEW_LINE);
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   ctx->Line.StippleFactor = factor;
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   ctx->Line.StipplePattern = pattern;
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   if (ctx->Driver.LineStipple)
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      ctx->Driver.LineStipple( ctx, factor, pattern );
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}