indirect_program.c revision 6747b715 
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 * THE COPYRIGHT HOLDERS, THE AUTHORS, AND/OR THEIR SUPPLIERS BE LIABLE FOR
20 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
22 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25/**
26 * \file indirect_program.c
27 * Hand-coded routines needed to support programmable pipeline extensions.
28 *
29 * \author Ian Romanick <idr@us.ibm.com>
30 */
31
32#ifdef HAVE_DIX_CONFIG_H
33#include <dix-config.h>
34#endif
35
36#include "glxserver.h"
37#include "glxbyteorder.h"
38#include "glxext.h"
39#include "singlesize.h"
40#include "unpack.h"
41#include "indirect_size_get.h"
42#include "indirect_dispatch.h"
43#include "glapitable.h"
44#include "glapi.h"
45#include "glthread.h"
46#include "dispatch.h"
47#include "glapioffsets.h"
48
49static int DoGetProgramString(struct __GLXclientStateRec *cl, GLbyte *pc,
50    unsigned get_programiv_offset, unsigned get_program_string_offset,
51    Bool do_swap);
52
53/**
54 * Handle both types of glGetProgramString calls.
55 *
56 * This single function handles both \c glGetProgramStringARB and
57 * \c glGetProgramStringNV.  The dispatch offsets for the functions to use
58 * for \c glGetProgramivARB and \c glGetProgramStringARB are passed in by the
59 * caller.  These can be the offsets of either the ARB versions or the NV
60 * versions.
61 */
62int DoGetProgramString(struct __GLXclientStateRec *cl, GLbyte *pc,
63		       unsigned get_programiv_offset,
64		       unsigned get_program_string_offset,
65		       Bool do_swap)
66{
67    xGLXVendorPrivateWithReplyReq * const req =
68      (xGLXVendorPrivateWithReplyReq *) pc;
69    int error;
70    __GLXcontext * const cx = __glXForceCurrent(cl, req->contextTag, & error);
71    ClientPtr client = cl->client;
72
73
74    pc += __GLX_VENDPRIV_HDR_SIZE;
75    if (cx != NULL) {
76	GLenum target;
77	GLenum pname;
78	GLint compsize = 0;
79	char *answer = NULL, answerBuffer[200];
80
81	if (do_swap) {
82	    target = (GLenum) bswap_32(*(int *)(pc + 0));
83	    pname =  (GLenum) bswap_32(*(int *)(pc + 4));
84	}
85	else {
86	    target = *(GLenum *)(pc + 0);
87	    pname =  *(GLuint *)(pc + 4);
88	}
89
90	/* The value of the GL_PROGRAM_LENGTH_ARB and GL_PROGRAM_LENGTH_NV
91	 * enumerants is the same.
92	 */
93	CALL_by_offset(GET_DISPATCH(),
94		       (void (GLAPIENTRYP)(GLuint, GLenum, GLint *)),
95		       get_programiv_offset,
96		       (target, GL_PROGRAM_LENGTH_ARB, &compsize));
97
98	if (compsize != 0) {
99	    __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
100	    __glXClearErrorOccured();
101
102	    CALL_by_offset(GET_DISPATCH(),
103			   (void (GLAPIENTRYP)(GLuint, GLenum, GLubyte *)),
104			   get_program_string_offset,
105			   (target, pname, (GLubyte *)answer));
106	}
107
108	if (__glXErrorOccured()) {
109	    __GLX_BEGIN_REPLY(0);
110	    __GLX_SEND_HEADER();
111	} else {
112	    __GLX_BEGIN_REPLY(compsize);
113	    ((xGLXGetTexImageReply *)&__glXReply)->width = compsize;
114	    __GLX_SEND_HEADER();
115	    __GLX_SEND_VOID_ARRAY(compsize);
116	}
117
118	error = Success;
119    }
120
121    return error;
122}
123
124int __glXDisp_GetProgramStringARB(struct __GLXclientStateRec *cl, GLbyte *pc)
125{
126    return DoGetProgramString(cl, pc, _gloffset_GetProgramivARB,
127			      _gloffset_GetProgramStringARB, False);
128}
129
130
131int __glXDispSwap_GetProgramStringARB(struct __GLXclientStateRec *cl, GLbyte *pc)
132{
133    return DoGetProgramString(cl, pc, _gloffset_GetProgramivARB,
134			      _gloffset_GetProgramStringARB, True);
135}
136
137
138int __glXDisp_GetProgramStringNV(struct __GLXclientStateRec *cl, GLbyte *pc)
139{
140    return DoGetProgramString(cl, pc, _gloffset_GetProgramivNV,
141			      _gloffset_GetProgramStringNV, False);
142}
143
144
145int __glXDispSwap_GetProgramStringNV(struct __GLXclientStateRec *cl, GLbyte *pc)
146{
147    return DoGetProgramString(cl, pc, _gloffset_GetProgramivNV,
148			      _gloffset_GetProgramStringNV, True);
149}
150