• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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