-/* $Id: polygon.c,v 1.21 2001/03/22 00:36:27 gareth Exp $ */
+/**
+ * \file polygon.c
+ * Polygon operations.
+ */
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 6.5.1
*
- * Copyright (C) 1999-2001 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"),
*/
-#ifdef PC_HEADER
-#include "all.h"
-#else
#include "glheader.h"
+#include "imports.h"
+#include "bufferobj.h"
#include "context.h"
#include "image.h"
#include "enums.h"
-#include "macros.h"
-#include "mem.h"
#include "polygon.h"
#include "mtypes.h"
-#endif
-
-void
+/**
+ * Specify whether to cull front- or back-facing facets.
+ *
+ * \param mode culling mode.
+ *
+ * \sa glCullFace().
+ *
+ * Verifies the parameter and updates gl_polygon_attrib::CullFaceMode. On
+ * change, flushes the vertices and notifies the driver via
+ * the dd_function_table::CullFace callback.
+ */
+void GLAPIENTRY
_mesa_CullFace( GLenum mode )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&VERBOSE_API)
- fprintf(stderr, "glCullFace %s\n", _mesa_lookup_enum_by_nr(mode));
+ _mesa_debug(ctx, "glCullFace %s\n", _mesa_lookup_enum_by_nr(mode));
if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) {
_mesa_error( ctx, GL_INVALID_ENUM, "glCullFace" );
}
-
-void
+/**
+ * Define front- and back-facing
+ *
+ * \param mode orientation of front-facing polygons.
+ *
+ * \sa glFrontFace().
+ *
+ * Verifies the parameter and updates gl_polygon_attrib::FrontFace. On change
+ * flushes the vertices and notifies the driver via
+ * the dd_function_table::FrontFace callback.
+ */
+void GLAPIENTRY
_mesa_FrontFace( GLenum mode )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&VERBOSE_API)
- fprintf(stderr, "glFrontFace %s\n", _mesa_lookup_enum_by_nr(mode));
+ _mesa_debug(ctx, "glFrontFace %s\n", _mesa_lookup_enum_by_nr(mode));
if (mode!=GL_CW && mode!=GL_CCW) {
_mesa_error( ctx, GL_INVALID_ENUM, "glFrontFace" );
}
-
-void
+/**
+ * Set the polygon rasterization mode.
+ *
+ * \param face the polygons which \p mode applies to.
+ * \param mode how polygons should be rasterized.
+ *
+ * \sa glPolygonMode().
+ *
+ * Verifies the parameters and updates gl_polygon_attrib::FrontMode and
+ * gl_polygon_attrib::BackMode. On change flushes the vertices and notifies the
+ * driver via the dd_function_table::PolygonMode callback.
+ */
+void GLAPIENTRY
_mesa_PolygonMode( GLenum face, GLenum mode )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&VERBOSE_API)
- fprintf(stderr, "glPolygonMode %s %s\n",
- _mesa_lookup_enum_by_nr(face),
- _mesa_lookup_enum_by_nr(mode));
+ _mesa_debug(ctx, "glPolygonMode %s %s\n",
+ _mesa_lookup_enum_by_nr(face),
+ _mesa_lookup_enum_by_nr(mode));
if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {
_mesa_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );
return;
}
- ctx->_TriangleCaps &= ~DD_TRI_UNFILLED;
- if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL)
+ if (ctx->Polygon.FrontMode == GL_FILL && ctx->Polygon.BackMode == GL_FILL)
+ ctx->_TriangleCaps &= ~DD_TRI_UNFILLED;
+ else
ctx->_TriangleCaps |= DD_TRI_UNFILLED;
- if (ctx->Driver.PolygonMode) {
- (*ctx->Driver.PolygonMode)( ctx, face, mode );
- }
+ if (ctx->Driver.PolygonMode)
+ ctx->Driver.PolygonMode(ctx, face, mode);
}
+#if _HAVE_FULL_GL
+/**
+ * This routine updates the ctx->Polygon.Stipple state.
+ * If we're getting the stipple data from a PBO, we map the buffer
+ * in order to access the data.
+ * In any case, we obey the current pixel unpacking parameters when fetching
+ * the stipple data.
+ *
+ * In the future, this routine should be used as a fallback, called via
+ * ctx->Driver.PolygonStipple(). We'll have to update all the DRI drivers
+ * too.
+ */
void
+_mesa_polygon_stipple(GLcontext *ctx, const GLubyte *pattern)
+{
+ pattern = _mesa_map_validate_pbo_source(ctx, 2,
+ &ctx->Unpack, 32, 32, 1,
+ GL_COLOR_INDEX, GL_BITMAP, pattern,
+ "glPolygonStipple");
+ if (!pattern)
+ return;
+
+ _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack);
+
+ _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
+}
+
+
+/**
+ * Called by glPolygonStipple.
+ */
+void GLAPIENTRY
_mesa_PolygonStipple( const GLubyte *pattern )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&VERBOSE_API)
- fprintf(stderr, "glPolygonStipple\n");
+ _mesa_debug(ctx, "glPolygonStipple\n");
FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE);
- _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack);
+
+ _mesa_polygon_stipple(ctx, pattern);
if (ctx->Driver.PolygonStipple)
- ctx->Driver.PolygonStipple( ctx, (const GLubyte *) ctx->PolygonStipple );
+ ctx->Driver.PolygonStipple(ctx, pattern);
}
-
-void
+/**
+ * Called by glPolygonStipple.
+ */
+void GLAPIENTRY
_mesa_GetPolygonStipple( GLubyte *dest )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&VERBOSE_API)
- fprintf(stderr, "glGetPolygonStipple\n");
+ _mesa_debug(ctx, "glGetPolygonStipple\n");
+
+ dest = _mesa_map_validate_pbo_dest(ctx, 2,
+ &ctx->Pack, 32, 32, 1,
+ GL_COLOR_INDEX, GL_BITMAP, dest,
+ "glGetPolygonStipple");
+ if (!dest)
+ return;
_mesa_pack_polygon_stipple(ctx->PolygonStipple, dest, &ctx->Pack);
-}
+ _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
+}
-void
+void GLAPIENTRY
_mesa_PolygonOffset( GLfloat factor, GLfloat units )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&VERBOSE_API)
- fprintf(stderr, "glPolygonOffset %f %f\n", factor, units);
+ _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units);
if (ctx->Polygon.OffsetFactor == factor &&
ctx->Polygon.OffsetUnits == units)
FLUSH_VERTICES(ctx, _NEW_POLYGON);
ctx->Polygon.OffsetFactor = factor;
ctx->Polygon.OffsetUnits = units;
- ctx->Polygon.OffsetMRD = units * ctx->MRD;
if (ctx->Driver.PolygonOffset)
ctx->Driver.PolygonOffset( ctx, factor, units );
}
-
-void
+void GLAPIENTRY
_mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias )
{
GET_CURRENT_CONTEXT(ctx);
- _mesa_PolygonOffset(factor, bias * ctx->DepthMaxF );
+ /* XXX mult by DepthMaxF here??? */
+ _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF );
}
+
+#endif
+
+
+/**********************************************************************/
+/** \name Initialization */
+/*@{*/
+
+/**
+ * Initialize the context polygon state.
+ *
+ * \param ctx GL context.
+ *
+ * Initializes __GLcontextRec::Polygon and __GLcontextRec::PolygonStipple
+ * attribute groups.
+ */
+void _mesa_init_polygon( GLcontext * ctx )
+{
+ /* Polygon group */
+ ctx->Polygon.CullFlag = GL_FALSE;
+ ctx->Polygon.CullFaceMode = GL_BACK;
+ ctx->Polygon.FrontFace = GL_CCW;
+ ctx->Polygon._FrontBit = 0;
+ ctx->Polygon.FrontMode = GL_FILL;
+ ctx->Polygon.BackMode = GL_FILL;
+ ctx->Polygon.SmoothFlag = GL_FALSE;
+ ctx->Polygon.StippleFlag = GL_FALSE;
+ ctx->Polygon.OffsetFactor = 0.0F;
+ ctx->Polygon.OffsetUnits = 0.0F;
+ ctx->Polygon.OffsetPoint = GL_FALSE;
+ ctx->Polygon.OffsetLine = GL_FALSE;
+ ctx->Polygon.OffsetFill = GL_FALSE;
+
+
+ /* Polygon Stipple group */
+ memset( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) );
+}
+
+/*@}*/
projects / mesa.git / blobdiff