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
39 static void
do_enable_disable(GLenum array,GLboolean val)40 do_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
55 void
__indirect_glEnableClientState(GLenum array)56 __indirect_glEnableClientState(GLenum array)
57 {
58 do_enable_disable(array, GL_TRUE);
59 }
60
61 void
__indirect_glDisableClientState(GLenum array)62 __indirect_glDisableClientState(GLenum array)
63 {
64 do_enable_disable(array, GL_FALSE);
65 }
66
67 /************************************************************************/
68
69 void
__indirect_glPushClientAttrib(GLuint mask)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
101 void
__indirect_glPopClientAttrib(void)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
133 void
__glFreeAttributeState(struct glx_context * gc)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