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/* $Id: polygon.c,v 1.1.1.1 1999/08/19 00:55:41 jtg Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.1
*
* Copyright (C) 1999 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.
*/
#ifdef PC_HEADER
#include "all.h"
#else
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "context.h"
#include "image.h"
#include "enums.h"
#include "macros.h"
#include "polygon.h"
#include "types.h"
#ifdef XFree86Server
#include "GL/xf86glx.h"
#endif
#endif
void gl_CullFace( GLcontext *ctx, GLenum mode )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glCullFace");
if (MESA_VERBOSE&VERBOSE_API)
fprintf(stderr, "glCullFace %s\n", gl_lookup_enum_by_nr(mode));
if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) {
gl_error( ctx, GL_INVALID_ENUM, "glCullFace" );
return;
}
ctx->Polygon.CullFaceMode = mode;
ctx->NewState |= NEW_POLYGON;
if (ctx->Driver.CullFace)
ctx->Driver.CullFace( ctx, mode );
}
void gl_FrontFace( GLcontext *ctx, GLenum mode )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFrontFace");
if (MESA_VERBOSE&VERBOSE_API)
fprintf(stderr, "glFrontFace %s\n", gl_lookup_enum_by_nr(mode));
if (mode!=GL_CW && mode!=GL_CCW) {
gl_error( ctx, GL_INVALID_ENUM, "glFrontFace" );
return;
}
ctx->Polygon.FrontFace = mode;
ctx->Polygon.FrontBit = (mode == GL_CW);
if (ctx->Driver.FrontFace)
ctx->Driver.FrontFace( ctx, mode );
}
void gl_PolygonMode( GLcontext *ctx, GLenum face, GLenum mode )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonMode");
if (MESA_VERBOSE&VERBOSE_API)
fprintf(stderr, "glPolygonMode %s %s\n",
gl_lookup_enum_by_nr(face),
gl_lookup_enum_by_nr(mode));
if (face!=GL_FRONT && face!=GL_BACK && face!=GL_FRONT_AND_BACK) {
gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" );
return;
}
else if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {
gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );
return;
}
if (face==GL_FRONT || face==GL_FRONT_AND_BACK) {
ctx->Polygon.FrontMode = mode;
}
if (face==GL_BACK || face==GL_FRONT_AND_BACK) {
ctx->Polygon.BackMode = mode;
}
/* Compute a handy "shortcut" value: */
ctx->TriangleCaps &= ~DD_TRI_UNFILLED;
ctx->Polygon.Unfilled = GL_FALSE;
if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) {
ctx->Polygon.Unfilled = GL_TRUE;
ctx->TriangleCaps |= DD_TRI_UNFILLED;
}
else {
ctx->Polygon.Unfilled = GL_FALSE;
}
ctx->NewState |= (NEW_POLYGON | NEW_RASTER_OPS);
if (ctx->Driver.PolygonMode) {
(*ctx->Driver.PolygonMode)( ctx, face, mode );
}
}
/*
* NOTE: stipple pattern has already been unpacked.
*/
void gl_PolygonStipple( GLcontext *ctx, const GLuint pattern[32] )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonStipple");
if (MESA_VERBOSE&VERBOSE_API)
fprintf(stderr, "glPolygonStipple\n");
MEMCPY( ctx->PolygonStipple, pattern, 32 * 4 );
if (ctx->Polygon.StippleFlag) {
ctx->NewState |= NEW_RASTER_OPS;
}
}
void gl_GetPolygonStipple( GLcontext *ctx, GLubyte *dest )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset");
if (MESA_VERBOSE&VERBOSE_API)
fprintf(stderr, "glGetPolygonStipple\n");
gl_pack_polygon_stipple( ctx, ctx->PolygonStipple, dest );
}
void gl_PolygonOffset( GLcontext *ctx,
GLfloat factor, GLfloat units )
{
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glPolygonOffset");
if (MESA_VERBOSE&VERBOSE_API)
fprintf(stderr, "glPolygonOffset %f %f\n", factor, units);
ctx->Polygon.OffsetFactor = factor;
ctx->Polygon.OffsetUnits = units;
}
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