1/*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31#include <assert.h>
32#include "glxclient.h"
33#include "indirect.h"
34#include "indirect_vertex_array.h"
35
36/*****************************************************************************/
37
38#ifndef GLX_USE_APPLEGL
39static void
40do_enable_disable(GLenum array, GLboolean val)
41{
42   struct glx_context *gc = __glXGetCurrentContext();
43   __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
44   unsigned index = 0;
45
46   if (array == GL_TEXTURE_COORD_ARRAY) {
47      index = __glXGetActiveTextureUnit(state);
48   }
49
50   if (!__glXSetArrayEnable(state, array, index, val)) {
51      __glXSetError(gc, GL_INVALID_ENUM);
52   }
53}
54
55void
56__indirect_glEnableClientState(GLenum array)
57{
58   do_enable_disable(array, GL_TRUE);
59}
60
61void
62__indirect_glDisableClientState(GLenum array)
63{
64   do_enable_disable(array, GL_FALSE);
65}
66
67/************************************************************************/
68
69void
70__indirect_glPushClientAttrib(GLuint mask)
71{
72   struct glx_context *gc = __glXGetCurrentContext();
73   __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
74   __GLXattribute **spp = gc->attributes.stackPointer, *sp;
75
76   if (spp < &gc->attributes.stack[__GL_CLIENT_ATTRIB_STACK_DEPTH]) {
77      if (!(sp = *spp)) {
78         sp = malloc(sizeof(__GLXattribute));
79         if (sp == NULL) {
80            __glXSetError(gc, GL_OUT_OF_MEMORY);
81            return;
82         }
83         *spp = sp;
84      }
85      sp->mask = mask;
86      gc->attributes.stackPointer = spp + 1;
87      if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
88         sp->storePack = state->storePack;
89         sp->storeUnpack = state->storeUnpack;
90      }
91      if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
92         __glXPushArrayState(state);
93      }
94   }
95   else {
96      __glXSetError(gc, GL_STACK_OVERFLOW);
97      return;
98   }
99}
100
101void
102__indirect_glPopClientAttrib(void)
103{
104   struct glx_context *gc = __glXGetCurrentContext();
105   __GLXattribute *state = (__GLXattribute *) (gc->client_state_private);
106   __GLXattribute **spp = gc->attributes.stackPointer, *sp;
107   GLuint mask;
108
109   if (spp > &gc->attributes.stack[0]) {
110      --spp;
111      sp = *spp;
112      assert(sp != 0);
113      mask = sp->mask;
114      gc->attributes.stackPointer = spp;
115
116      if (mask & GL_CLIENT_PIXEL_STORE_BIT) {
117         state->storePack = sp->storePack;
118         state->storeUnpack = sp->storeUnpack;
119      }
120      if (mask & GL_CLIENT_VERTEX_ARRAY_BIT) {
121         __glXPopArrayState(state);
122      }
123
124      sp->mask = 0;
125   }
126   else {
127      __glXSetError(gc, GL_STACK_UNDERFLOW);
128      return;
129   }
130}
131#endif
132
133void
134__glFreeAttributeState(struct glx_context * gc)
135{
136   __GLXattribute *sp, **spp;
137
138   for (spp = &gc->attributes.stack[0];
139        spp < &gc->attributes.stack[__GL_CLIENT_ATTRIB_STACK_DEPTH]; spp++) {
140      sp = *spp;
141      if (sp) {
142         free((char *) sp);
143      }
144      else {
145         break;
146      }
147   }
148}
149