Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | Download | RSS feed

  1. /*
  2.  * Mesa 3-D graphics library
  3.  * Version:  6.5.3
  4.  *
  5.  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
  6.  *
  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:
  13.  *
  14.  * The above copyright notice and this permission notice shall be included
  15.  * in all copies or substantial portions of the Software.
  16.  *
  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.
  23.  */
  24.  
  25.  
  26. #include "glheader.h"
  27. #include "context.h"
  28. #include "lines.h"
  29. #include "macros.h"
  30. #include "mtypes.h"
  31.  
  32.  
  33. /**
  34.  * Set the line width.
  35.  *
  36.  * \param width line width in pixels.
  37.  *
  38.  * \sa glLineWidth().
  39.  */
  40. void GLAPIENTRY
  41. _mesa_LineWidth( GLfloat width )
  42. {
  43.    GET_CURRENT_CONTEXT(ctx);
  44.    ASSERT_OUTSIDE_BEGIN_END(ctx);
  45.  
  46.    if (width<=0.0) {
  47.       _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
  48.       return;
  49.    }
  50.  
  51.    if (ctx->Line.Width == width)
  52.       return;
  53.  
  54.    FLUSH_VERTICES(ctx, _NEW_LINE);
  55.    ctx->Line.Width = width;
  56.  
  57.    if (ctx->Driver.LineWidth)
  58.       ctx->Driver.LineWidth(ctx, width);
  59. }
  60.  
  61.  
  62. /**
  63.  * Set the line stipple pattern.
  64.  *
  65.  * \param factor pattern scale factor.
  66.  * \param pattern bit pattern.
  67.  *
  68.  * \sa glLineStipple().
  69.  *
  70.  * Updates gl_line_attrib::StippleFactor and gl_line_attrib::StipplePattern. On
  71.  * change flushes the vertices and notifies the driver via
  72.  * the dd_function_table::LineStipple callback.
  73.  */
  74. void GLAPIENTRY
  75. _mesa_LineStipple( GLint factor, GLushort pattern )
  76. {
  77.    GET_CURRENT_CONTEXT(ctx);
  78.    ASSERT_OUTSIDE_BEGIN_END(ctx);
  79.  
  80.    factor = CLAMP( factor, 1, 256 );
  81.  
  82.    if (ctx->Line.StippleFactor == factor &&
  83.        ctx->Line.StipplePattern == pattern)
  84.       return;
  85.  
  86.    FLUSH_VERTICES(ctx, _NEW_LINE);
  87.    ctx->Line.StippleFactor = factor;
  88.    ctx->Line.StipplePattern = pattern;
  89.  
  90.    if (ctx->Driver.LineStipple)
  91.       ctx->Driver.LineStipple( ctx, factor, pattern );
  92. }
  93.  
  94.  
  95. /**
  96.  * Initialize the context line state.
  97.  *
  98.  * \param ctx GL context.
  99.  *
  100.  * Initializes __struct gl_contextRec::Line and line related constants in
  101.  * __struct gl_contextRec::Const.
  102.  */
  103. void GLAPIENTRY
  104. _mesa_init_line( struct gl_context * ctx )
  105. {
  106.    ctx->Line.SmoothFlag = GL_FALSE;
  107.    ctx->Line.StippleFlag = GL_FALSE;
  108.    ctx->Line.Width = 1.0;
  109.    ctx->Line.StipplePattern = 0xffff;
  110.    ctx->Line.StippleFactor = 1;
  111. }
  112.