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/* $XFree86: xc/lib/GL/glx/clientattrib.c,v 1.5 2001/03/21 16:04:39 dawes Exp $ */
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/
#include <assert.h>
#include "glxclient.h"
#include "indirect_vertex_array.h"
/*****************************************************************************/
static void
do_enable_disable(GLenum array, GLboolean val )
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
unsigned index = 0;
if ( array == GL_TEXTURE_COORD_ARRAY ) {
index = __glXGetActiveTextureUnit( state );
}
if ( ! __glXSetArrayEnable( state, array, index, val ) ) {
__glXSetError(gc, GL_INVALID_ENUM);
}
}
void __indirect_glEnableClientState(GLenum array)
{
do_enable_disable( array, GL_TRUE );
}
void __indirect_glDisableClientState(GLenum array)
{
do_enable_disable( array, GL_FALSE );
}
/************************************************************************/
void __indirect_glPushClientAttrib(GLuint mask)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXattribute **spp = gc->attributes.stackPointer, *sp;
if (spp < &gc->attributes.stack[__GL_CLIENT_ATTRIB_STACK_DEPTH]) {
if (!(sp = *spp)) {
sp = (__GLXattribute *)Xmalloc(sizeof(__GLXattribute));
*spp = sp;
}
sp->mask = mask;
gc->attributes.stackPointer = spp + 1;
if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
sp->storePack = state->storePack;
sp->storeUnpack = state->storeUnpack;
}
if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
__glXPushArrayState( state );
}
} else {
__glXSetError(gc, GL_STACK_OVERFLOW);
return;
}
}
void __indirect_glPopClientAttrib(void)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXattribute **spp = gc->attributes.stackPointer, *sp;
GLuint mask;
if (spp > &gc->attributes.stack[0]) {
--spp;
sp = *spp;
assert(sp != 0);
mask = sp->mask;
gc->attributes.stackPointer = spp;
if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
state->storePack = sp->storePack;
state->storeUnpack = sp->storeUnpack;
}
if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
__glXPopArrayState( state );
}
sp->mask = 0;
} else {
__glXSetError(gc, GL_STACK_UNDERFLOW);
return;
}
}
void __glFreeAttributeState(__GLXcontext *gc)
{
__GLXattribute *sp, **spp;
for (spp = &gc->attributes.stack[0];
spp < &gc->attributes.stack[__GL_CLIENT_ATTRIB_STACK_DEPTH];
spp++) {
sp = *spp;
if (sp) {
XFree((char *)sp);
} else {
break;
}
}
}
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