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/* $Id: polygon.c,v 1.6 1997/06/03 01:58:27 brianp Exp $ */ /* * Mesa 3-D graphics library * Version: 2.3 * Copyright (C) 1995-1997 Brian Paul * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * $Log: polygon.c,v $ * Revision 1.6 1997/06/03 01:58:27 brianp * fixed unpacking bug in gl_PolygonStipple() * * Revision 1.5 1997/05/28 03:26:02 brianp * added precompiled header (PCH) support * * Revision 1.4 1997/04/12 16:54:05 brianp * new NEW_POLYGON state flag * * Revision 1.3 1996/10/11 03:44:58 brianp * removed Polygon.OffsetBias * * Revision 1.2 1996/09/26 22:48:40 brianp * set NEW_RASTER_OPS flag in gl_PolygonStipple() if stippling enabled * * Revision 1.1 1996/09/13 01:38:16 brianp * Initial revision * */ #ifdef PCH #include "all.h" #else #include <assert.h> #include <stdlib.h> #include <string.h> #include "context.h" #include "macros.h" #include "polygon.h" #include "types.h" #endif void gl_CullFace( GLcontext *ctx, GLenum mode ) { if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) { gl_error( ctx, GL_INVALID_ENUM, "glCullFace" ); return; } if (INSIDE_BEGIN_END(ctx)) { gl_error( ctx, GL_INVALID_OPERATION, "glCullFace" ); return; } ctx->Polygon.CullFaceMode = mode; ctx->NewState |= NEW_POLYGON; } void gl_FrontFace( GLcontext *ctx, GLenum mode ) { if (INSIDE_BEGIN_END(ctx)) { gl_error( ctx, GL_INVALID_OPERATION, "glFrontFace" ); return; } if (mode!=GL_CW && mode!=GL_CCW) { gl_error( ctx, GL_INVALID_ENUM, "glFrontFace" ); return; } ctx->Polygon.FrontFace = mode; } void gl_PolygonMode( GLcontext *ctx, GLenum face, GLenum mode ) { if (INSIDE_BEGIN_END(ctx)) { gl_error( ctx, GL_INVALID_OPERATION, "glPolygonMode" ); return; } 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: */ if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) { ctx->Polygon.Unfilled = GL_TRUE; } else { ctx->Polygon.Unfilled = GL_FALSE; } ctx->NewState |= NEW_POLYGON; } void gl_PolygonStipple( GLcontext *ctx, const GLubyte *mask ) { GLint i; if (INSIDE_BEGIN_END(ctx)) { gl_error( ctx, GL_INVALID_OPERATION, "glPolygonStipple" ); return; } /* TODO: bit twiddling, unpacking */ for (i=0;i<32;i++) { ctx->PolygonStipple[i] = (mask[i*4+0] << 24) | (mask[i*4+1] << 16) | (mask[i*4+2] << 8) | (mask[i*4+3]); } if (ctx->Polygon.StippleFlag) { ctx->NewState |= NEW_RASTER_OPS; } } void gl_GetPolygonStipple( GLcontext *ctx, GLubyte *mask ) { /* TODO */ } void gl_PolygonOffset( GLcontext *ctx, GLfloat factor, GLfloat units ) { if (INSIDE_BEGIN_END(ctx)) { gl_error( ctx, GL_INVALID_OPERATION, "glPolygonOffset" ); return; } ctx->Polygon.OffsetFactor = factor; ctx->Polygon.OffsetUnits = units; }
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.