indirect_texture_compression.c revision 7e31ba66 
1/*
2 * (C) Copyright IBM Corporation 2005, 2006
3 * 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, sub license,
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 and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
19 * IBM,
20 * AND/OR THEIR SUPPLIERS 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
26#ifdef HAVE_DIX_CONFIG_H
27#include <dix-config.h>
28#endif
29
30#include "glxserver.h"
31#include "glxbyteorder.h"
32#include "glxext.h"
33#include "singlesize.h"
34#include "unpack.h"
35#include "indirect_size_get.h"
36#include "indirect_dispatch.h"
37
38int
39__glXDisp_GetCompressedTexImage(struct __GLXclientStateRec *cl, GLbyte * pc)
40{
41    xGLXSingleReq *const req = (xGLXSingleReq *) pc;
42    int error;
43    __GLXcontext *const cx = __glXForceCurrent(cl, req->contextTag, &error);
44    ClientPtr client = cl->client;
45
46    REQUEST_FIXED_SIZE(xGLXSingleReq, 8);
47
48    REQUEST_FIXED_SIZE(xGLXSingleReq, 8);
49
50    pc += __GLX_SINGLE_HDR_SIZE;
51    if (cx != NULL) {
52        const GLenum target = *(GLenum *) (pc + 0);
53        const GLint level = *(GLint *) (pc + 4);
54        GLint compsize = 0;
55        char *answer = NULL, answerBuffer[200];
56        xGLXSingleReply reply = { 0, };
57
58        glGetTexLevelParameteriv(target, level, GL_TEXTURE_COMPRESSED_IMAGE_SIZE,
59                                 &compsize);
60
61        if (compsize != 0) {
62            PFNGLGETCOMPRESSEDTEXIMAGEARBPROC GetCompressedTexImageARB =
63                __glGetProcAddress("glGetCompressedTexImageARB");
64            __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
65            __glXClearErrorOccured();
66            GetCompressedTexImageARB(target, level, answer);
67        }
68
69        if (__glXErrorOccured()) {
70            __GLX_BEGIN_REPLY(0);
71            __GLX_SEND_HEADER();
72        }
73        else {
74            __GLX_BEGIN_REPLY(compsize);
75            ((xGLXGetTexImageReply *) &reply)->width = compsize;
76            __GLX_SEND_HEADER();
77            __GLX_SEND_VOID_ARRAY(compsize);
78        }
79
80        error = Success;
81    }
82
83    return error;
84}
85
86int
87__glXDispSwap_GetCompressedTexImage(struct __GLXclientStateRec *cl, GLbyte * pc)
88{
89    xGLXSingleReq *const req = (xGLXSingleReq *) pc;
90    int error;
91    __GLXcontext *const cx =
92        __glXForceCurrent(cl, bswap_32(req->contextTag), &error);
93    ClientPtr client = cl->client;
94
95    REQUEST_FIXED_SIZE(xGLXSingleReq, 8);
96
97    REQUEST_FIXED_SIZE(xGLXSingleReq, 8);
98
99    pc += __GLX_SINGLE_HDR_SIZE;
100    if (cx != NULL) {
101        const GLenum target = (GLenum) bswap_32(*(int *) (pc + 0));
102        const GLint level = (GLint) bswap_32(*(int *) (pc + 4));
103        GLint compsize = 0;
104        char *answer = NULL, answerBuffer[200];
105        xGLXSingleReply reply = { 0, };
106
107        glGetTexLevelParameteriv(target, level, GL_TEXTURE_COMPRESSED_IMAGE_SIZE,
108                                 &compsize);
109
110        if (compsize != 0) {
111            PFNGLGETCOMPRESSEDTEXIMAGEARBPROC GetCompressedTexImageARB =
112                __glGetProcAddress("glGetCompressedTexImageARB");
113            __GLX_GET_ANSWER_BUFFER(answer, cl, compsize, 1);
114            __glXClearErrorOccured();
115            GetCompressedTexImageARB(target, level, answer);
116        }
117
118        if (__glXErrorOccured()) {
119            __GLX_BEGIN_REPLY(0);
120            __GLX_SEND_HEADER();
121        }
122        else {
123            __GLX_BEGIN_REPLY(compsize);
124            ((xGLXGetTexImageReply *) &reply)->width = compsize;
125            __GLX_SEND_HEADER();
126            __GLX_SEND_VOID_ARRAY(compsize);
127        }
128
129        error = Success;
130    }
131
132    return error;
133}
134