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112 lines
3 KiB
C
112 lines
3 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 6.5.3
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*
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* Copyright (C) 1999-2006 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 <precomp.h>
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/**
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* Set the line width.
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*
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* \param width line width in pixels.
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*
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* \sa glLineWidth().
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*/
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void GLAPIENTRY
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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 (MESA_VERBOSE & VERBOSE_API)
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_mesa_debug(ctx, "glLineWidth %f\n", width);
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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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if (ctx->Driver.LineWidth)
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ctx->Driver.LineWidth(ctx, width);
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}
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/**
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* Set the line stipple pattern.
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*
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* \param factor pattern scale factor.
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* \param pattern bit pattern.
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*
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* \sa glLineStipple().
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*
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* Updates gl_line_attrib::StippleFactor and gl_line_attrib::StipplePattern. On
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* change flushes the vertices and notifies the driver via
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* the dd_function_table::LineStipple callback.
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*/
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void GLAPIENTRY
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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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if (MESA_VERBOSE & VERBOSE_API)
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_mesa_debug(ctx, "glLineStipple %d %u\n", factor, pattern);
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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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}
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/**
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* Initialize the context line state.
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*
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* \param ctx GL context.
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*
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* Initializes __struct gl_contextRec::Line and line related constants in
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* __struct gl_contextRec::Const.
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*/
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void GLAPIENTRY
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_mesa_init_line( struct gl_context * ctx )
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{
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ctx->Line.SmoothFlag = GL_FALSE;
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ctx->Line.StippleFlag = GL_FALSE;
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ctx->Line.Width = 1.0;
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ctx->Line.StipplePattern = 0xffff;
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ctx->Line.StippleFactor = 1;
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}
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