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| Rev | Author | Line No. | Line |
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| 55 | pj | 1 | /* $Id: lines.c,v 1.1 2003-02-28 11:42:03 pj Exp $ */ |
| 2 | |||
| 3 | /* |
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| 4 | * Mesa 3-D graphics library |
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| 5 | * Version: 3.5 |
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| 6 | * |
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| 7 | * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. |
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| 8 | * |
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 10 | * copy of this software and associated documentation files (the "Software"), |
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| 11 | * to deal in the Software without restriction, including without limitation |
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 14 | * Software is furnished to do so, subject to the following conditions: |
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| 15 | * |
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| 16 | * The above copyright notice and this permission notice shall be included |
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| 17 | * in all copies or substantial portions of the Software. |
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| 18 | * |
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | */ |
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| 26 | |||
| 27 | |||
| 28 | #include "glheader.h" |
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| 29 | #include "context.h" |
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| 30 | #include "depth.h" |
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| 31 | #include "lines.h" |
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| 32 | #include "macros.h" |
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| 33 | #include "mmath.h" |
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| 34 | #include "texstate.h" |
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| 35 | #include "mtypes.h" |
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| 36 | |||
| 37 | |||
| 38 | void |
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| 39 | _mesa_LineWidth( GLfloat width ) |
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| 40 | { |
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| 41 | GET_CURRENT_CONTEXT(ctx); |
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| 42 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
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| 43 | |||
| 44 | if (width<=0.0) { |
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| 45 | _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" ); |
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| 46 | return; |
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| 47 | } |
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| 48 | |||
| 49 | if (ctx->Line.Width == width) |
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| 50 | return; |
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| 51 | |||
| 52 | FLUSH_VERTICES(ctx, _NEW_LINE); |
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| 53 | ctx->Line.Width = width; |
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| 54 | ctx->Line._Width = CLAMP(width, |
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| 55 | ctx->Const.MinLineWidth, |
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| 56 | ctx->Const.MaxLineWidth); |
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| 57 | |||
| 58 | |||
| 59 | if (width != 1.0) |
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| 60 | ctx->_TriangleCaps |= DD_LINE_WIDTH; |
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| 61 | else |
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| 62 | ctx->_TriangleCaps &= ~DD_LINE_WIDTH; |
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| 63 | |||
| 64 | if (ctx->Driver.LineWidth) |
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| 65 | (*ctx->Driver.LineWidth)(ctx, width); |
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| 66 | } |
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| 67 | |||
| 68 | |||
| 69 | |||
| 70 | void |
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| 71 | _mesa_LineStipple( GLint factor, GLushort pattern ) |
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| 72 | { |
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| 73 | GET_CURRENT_CONTEXT(ctx); |
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| 74 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
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| 75 | |||
| 76 | factor = CLAMP( factor, 1, 256 ); |
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| 77 | |||
| 78 | if (ctx->Line.StippleFactor == factor && |
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| 79 | ctx->Line.StipplePattern == pattern) |
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| 80 | return; |
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| 81 | |||
| 82 | FLUSH_VERTICES(ctx, _NEW_LINE); |
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| 83 | ctx->Line.StippleFactor = factor; |
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| 84 | ctx->Line.StipplePattern = pattern; |
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| 85 | |||
| 86 | if (ctx->Driver.LineStipple) |
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| 87 | ctx->Driver.LineStipple( ctx, factor, pattern ); |
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| 88 | } |