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Diffstat (limited to 'mesalib/src/mesa/main/lines.c')
-rw-r--r-- | mesalib/src/mesa/main/lines.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/mesalib/src/mesa/main/lines.c b/mesalib/src/mesa/main/lines.c new file mode 100644 index 000000000..81d0d33ab --- /dev/null +++ b/mesalib/src/mesa/main/lines.c @@ -0,0 +1,118 @@ +/* + * 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. + */ + + +#include "glheader.h" +#include "context.h" +#include "depth.h" +#include "lines.h" +#include "macros.h" +#include "texstate.h" +#include "mtypes.h" + + +/** + * 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; + } + + if (ctx->Line.Width == width) + return; + + FLUSH_VERTICES(ctx, _NEW_LINE); + ctx->Line.Width = width; + + if (width != 1.0F) + ctx->_TriangleCaps |= DD_LINE_WIDTH; + else + ctx->_TriangleCaps &= ~DD_LINE_WIDTH; + + if (ctx->Driver.LineWidth) + ctx->Driver.LineWidth(ctx, width); +} + + +/** + * 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 ); +} + + +/** + * Initialize the context line state. + * + * \param ctx GL context. + * + * Initializes __GLcontextRec::Line and line related constants in + * __GLcontextRec::Const. + */ +void GLAPIENTRY +_mesa_init_line( GLcontext * ctx ) +{ + ctx->Line.SmoothFlag = GL_FALSE; + ctx->Line.StippleFlag = GL_FALSE; + ctx->Line.Width = 1.0; + ctx->Line.StipplePattern = 0xffff; + ctx->Line.StippleFactor = 1; +} |