mirror of
https://github.com/reactos/reactos.git
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5f2bebf7a5
With this commit, we now use a forked version of MESA which only supports OpenGL 1.1, like the windows implementation does. It exposes : - The same pixel formats - The same set of extensions - Nothing more All of this without taking 10% of your build time. If you need a more modern option, look at the MESA package from Rapps, which is (and must be) maintained outside of this code tree. CORE-7499
172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
/* $Id: polygon.c,v 1.7 1997/07/24 01:23:44 brianp Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 2.4
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* Copyright (C) 1995-1997 Brian Paul
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* $Log: polygon.c,v $
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* Revision 1.7 1997/07/24 01:23:44 brianp
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* changed precompiled header symbol from PCH to PC_HEADER
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*
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* Revision 1.6 1997/06/03 01:58:27 brianp
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* fixed unpacking bug in gl_PolygonStipple()
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*
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* Revision 1.5 1997/05/28 03:26:02 brianp
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* added precompiled header (PCH) support
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*
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* Revision 1.4 1997/04/12 16:54:05 brianp
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* new NEW_POLYGON state flag
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*
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* Revision 1.3 1996/10/11 03:44:58 brianp
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* removed Polygon.OffsetBias
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*
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* Revision 1.2 1996/09/26 22:48:40 brianp
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* set NEW_RASTER_OPS flag in gl_PolygonStipple() if stippling enabled
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*
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* Revision 1.1 1996/09/13 01:38:16 brianp
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* Initial revision
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*
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*/
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#ifdef PC_HEADER
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#include "all.h"
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#else
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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#include "context.h"
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#include "macros.h"
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#include "polygon.h"
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#include "types.h"
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#endif
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void gl_CullFace( GLcontext *ctx, GLenum mode )
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{
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if (mode!=GL_FRONT && mode!=GL_BACK && mode!=GL_FRONT_AND_BACK) {
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gl_error( ctx, GL_INVALID_ENUM, "glCullFace" );
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return;
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}
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glCullFace" );
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return;
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}
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ctx->Polygon.CullFaceMode = mode;
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ctx->NewState |= NEW_POLYGON;
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}
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void gl_FrontFace( GLcontext *ctx, GLenum mode )
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{
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glFrontFace" );
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return;
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}
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if (mode!=GL_CW && mode!=GL_CCW) {
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gl_error( ctx, GL_INVALID_ENUM, "glFrontFace" );
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return;
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}
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ctx->Polygon.FrontFace = mode;
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}
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void gl_PolygonMode( GLcontext *ctx, GLenum face, GLenum mode )
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{
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glPolygonMode" );
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return;
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}
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if (face!=GL_FRONT && face!=GL_BACK && face!=GL_FRONT_AND_BACK) {
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gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(face)" );
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return;
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}
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else if (mode!=GL_POINT && mode!=GL_LINE && mode!=GL_FILL) {
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gl_error( ctx, GL_INVALID_ENUM, "glPolygonMode(mode)" );
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return;
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}
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if (face==GL_FRONT || face==GL_FRONT_AND_BACK) {
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ctx->Polygon.FrontMode = mode;
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}
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if (face==GL_BACK || face==GL_FRONT_AND_BACK) {
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ctx->Polygon.BackMode = mode;
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}
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/* Compute a handy "shortcut" value: */
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if (ctx->Polygon.FrontMode!=GL_FILL || ctx->Polygon.BackMode!=GL_FILL) {
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ctx->Polygon.Unfilled = GL_TRUE;
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}
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else {
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ctx->Polygon.Unfilled = GL_FALSE;
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}
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ctx->NewState |= NEW_POLYGON;
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}
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void gl_PolygonStipple( GLcontext *ctx, const GLubyte *mask )
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{
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GLint i;
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glPolygonStipple" );
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return;
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}
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/* TODO: bit twiddling, unpacking */
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for (i=0;i<32;i++) {
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ctx->PolygonStipple[i] = (mask[i*4+0] << 24)
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| (mask[i*4+1] << 16)
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| (mask[i*4+2] << 8)
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| (mask[i*4+3]);
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}
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if (ctx->Polygon.StippleFlag) {
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ctx->NewState |= NEW_RASTER_OPS;
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}
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}
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void gl_GetPolygonStipple( GLcontext *ctx, GLubyte *mask )
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{
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/* TODO */
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}
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void gl_PolygonOffset( GLcontext *ctx,
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GLfloat factor, GLfloat units )
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{
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if (INSIDE_BEGIN_END(ctx)) {
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gl_error( ctx, GL_INVALID_OPERATION, "glPolygonOffset" );
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return;
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}
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ctx->Polygon.OffsetFactor = factor;
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ctx->Polygon.OffsetUnits = units;
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}
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