0,0 → 1,111 |
/* |
* Mesa 3-D graphics library |
* Version: 6.5.3 |
* |
* Copyright (C) 1999-2006 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. |
*/ |
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#include "glheader.h" |
#include "context.h" |
#include "lines.h" |
#include "macros.h" |
#include "mtypes.h" |
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/** |
* Set the line width. |
* |
* \param width line width in pixels. |
* |
* \sa glLineWidth(). |
*/ |
void GLAPIENTRY |
_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; |
} |
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if (ctx->Line.Width == width) |
return; |
|
FLUSH_VERTICES(ctx, _NEW_LINE); |
ctx->Line.Width = width; |
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if (ctx->Driver.LineWidth) |
ctx->Driver.LineWidth(ctx, width); |
} |
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/** |
* Set the line stipple pattern. |
* |
* \param factor pattern scale factor. |
* \param pattern bit pattern. |
* |
* \sa glLineStipple(). |
* |
* Updates gl_line_attrib::StippleFactor and gl_line_attrib::StipplePattern. On |
* change flushes the vertices and notifies the driver via |
* the dd_function_table::LineStipple callback. |
*/ |
void GLAPIENTRY |
_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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/** |
* Initialize the context line state. |
* |
* \param ctx GL context. |
* |
* Initializes __struct gl_contextRec::Line and line related constants in |
* __struct gl_contextRec::Const. |
*/ |
void GLAPIENTRY |
_mesa_init_line( struct gl_context * ctx ) |
{ |
ctx->Line.SmoothFlag = GL_FALSE; |
ctx->Line.StippleFlag = GL_FALSE; |
ctx->Line.Width = 1.0; |
ctx->Line.StipplePattern = 0xffff; |
ctx->Line.StippleFactor = 1; |
} |