Include mesa-6.4.2 project

1 files changed, 134 insertions, 0 deletions

diff --git a/nx-X11/extras/Mesa_6.4.2/src/mesa/main/lines.c b/nx-X11/extras/Mesa_6.4.2/src/mesa/main/lines.c
new file mode 100644
index 000000000..c30d9ac10
--- /dev/null
+++ b/nx-X11/extras/Mesa_6.4.2/src/mesa/main/lines.c
@@ -0,0 +1,134 @@
+/**
+ * \file lines.c
+ * Line operations.
+ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  5.1
+ *
+ * Copyright (C) 1999-2003  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().
+ *
+ * Verifies the parameter and updates gl_line_attrib::Width. On a change,
+ * flushes the vertices, updates the clamped line width and marks the
+ * DD_LINE_WIDTH flag in __GLcontextRec::_TriangleCaps for the drivers if the
+ * width is different from one. Notifies the driver via the
+ * dd_function_table::LineWidth callback.
+ */
+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;
+   ctx->Line._Width = CLAMP(width,
+			    ctx->Const.MinLineWidth,
+			    ctx->Const.MaxLineWidth);
+
+
+   if (width != 1.0)
+      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 )
+{
+   /* Line group */
+   ctx->Line.SmoothFlag = GL_FALSE;
+   ctx->Line.StippleFlag = GL_FALSE;
+   ctx->Line.Width = 1.0;
+   ctx->Line._Width = 1.0;
+   ctx->Line.StipplePattern = 0xffff;
+   ctx->Line.StippleFactor = 1;
+}