X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Flines.c;h=e400b391325b2f620b94edeaa7d939adfae88772;hb=ae1f09babb9c127d573050f4338b6f3d55cba377;hp=3d9aad52b715622ab7f8b2d875f52d54ad97573d;hpb=23caf20169ac38436ee9c13914f1d6aa7cf6bb5e;p=mesa.git

diff --git a/src/mesa/main/lines.c b/src/mesa/main/lines.c
index 3d9aad52b71..e400b391325 100644
--- a/src/mesa/main/lines.c
+++ b/src/mesa/main/lines.c
@@ -1,21 +1,19 @@
-/* $Id: lines.c,v 1.22 2000/11/16 21:05:35 keithw Exp $ */
-
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
- * 
- * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
- * 
+ * 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
@@ -25,58 +23,112 @@
  */
 
 
-#ifdef PC_HEADER
-#include "all.h"
-#else
 #include "glheader.h"
 #include "context.h"
-#include "depth.h"
-#include "feedback.h"
 #include "lines.h"
 #include "macros.h"
-#include "mmath.h"
-#include "texstate.h"
-#include "types.h"
-#endif
-
+#include "mtypes.h"
 
 
-void
+/**
+ * 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 (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glLineWidth %f\n", width);
+
    if (width<=0.0) {
-      gl_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
+      _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
       return;
    }
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glLineWidth");
-   
-   if (ctx->Line.Width != width) {
-      ctx->Line.Width = width;
-      ctx->_TriangleCaps &= ~DD_LINE_WIDTH;
-      if (width != 1.0) ctx->_TriangleCaps |= DD_LINE_WIDTH;
 
-      ctx->NewState |= _NEW_LINE;
-
-      if (ctx->Driver.LineWidth)
-         (*ctx->Driver.LineWidth)(ctx, width);
+   /* Page 407 (page 423 of the PDF) of the OpenGL 3.0 spec says (in the list
+    * of deprecated functionality):
+    *
+    *     "Wide lines and line stipple - LineWidth is not deprecated, but
+    *     values greater than 1.0 will generate an INVALID_VALUE error;"
+    *
+    * This is one of the very few cases where functionality was deprecated but
+    * *NOT* removed in a later spec.  Therefore, we only disallow this in a
+    * forward compatible context.
+    */
+   if (ctx->API == API_OPENGL_CORE
+       && ((ctx->Const.ContextFlags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
+           != 0)) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
+      return;
    }
-}
 
+   if (ctx->Line.Width == width)
+      return;
 
+   FLUSH_VERTICES(ctx, _NEW_LINE);
+   ctx->Line.Width = width;
 
-void
+   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_AND_FLUSH(ctx, "glLineStipple");
-   ctx->Line.StippleFactor = CLAMP( factor, 1, 256 );
-   ctx->Line.StipplePattern = pattern;
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glLineStipple %d %u\n", factor, pattern);
 
-   ctx->NewState |= _NEW_LINE;
+   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 __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;
+}