-/* $Id: lines.c,v 1.26 2001/01/13 05:48:25 keithw Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
*
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
+ * 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"),
* 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
-#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 "mtypes.h"
-#endif
-
-void
-_mesa_LineWidth( GLfloat width )
+/**
+ * Set the line width.
+ *
+ * \param width line width in pixels.
+ *
+ * \sa glLineWidth().
+ */
+static ALWAYS_INLINE void
+line_width(struct gl_context *ctx, GLfloat width, bool no_error)
{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
+ /* If width is unchanged, there can't be an error */
+ if (ctx->Line.Width == width)
+ return;
- if (width<=0.0) {
- gl_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
+ if (!no_error && width <= 0.0F) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
return;
}
- if (ctx->Line.Width == 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 (!no_error && ctx->API == API_OPENGL_CORE
+ && ((ctx->Const.ContextFlags & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT)
+ != 0)
+ && width > 1.0F) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glLineWidth" );
return;
+ }
- FLUSH_VERTICES(ctx, _NEW_LINE);
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewLineState ? 0 : _NEW_LINE);
+ ctx->NewDriverState |= ctx->DriverFlags.NewLineState;
ctx->Line.Width = width;
- ctx->Line._Width = CLAMP(width,
- ctx->Const.MinLineWidth,
- ctx->Const.MaxLineWidth);
+ if (ctx->Driver.LineWidth)
+ ctx->Driver.LineWidth(ctx, width);
+}
- if (width != 1.0)
- ctx->_TriangleCaps |= DD_LINE_WIDTH;
- else
- ctx->_TriangleCaps &= ~DD_LINE_WIDTH;
- if (ctx->Driver.LineWidth)
- (*ctx->Driver.LineWidth)(ctx, width);
+void GLAPIENTRY
+_mesa_LineWidth_no_error(GLfloat width)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ line_width(ctx, width, true);
}
+void GLAPIENTRY
+_mesa_LineWidth(GLfloat width)
+{
+ GET_CURRENT_CONTEXT(ctx);
-void
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glLineWidth %f\n", width);
+
+ line_width(ctx, width, false);
+}
+
+
+/**
+ * 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);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glLineStipple %d %u\n", factor, pattern);
factor = CLAMP( factor, 1, 256 );
ctx->Line.StipplePattern == pattern)
return;
- FLUSH_VERTICES(ctx, _NEW_LINE);
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewLineState ? 0 : _NEW_LINE);
+ ctx->NewDriverState |= ctx->DriverFlags.NewLineState;
ctx->Line.StippleFactor = factor;
ctx->Line.StipplePattern = 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
+_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;
+}
projects / mesa.git / blobdiff