indirect_program.c revision 4642e01f 
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#define NEED_REPLIES
33#ifdef HAVE_DIX_CONFIG_H
34#include <dix-config.h>
35#endif
36
37#include "glxserver.h"
38#include "glxbyteorder.h"
39#include "glxext.h"
40#include "singlesize.h"
41#include "unpack.h"
42#include "indirect_size_get.h"
43#include "indirect_dispatch.h"
44#include "glapitable.h"
45#include "glapi.h"
46#include "glthread.h"
47#include "dispatch.h"
48#include "glapioffsets.h"
49
50static int DoGetProgramString(struct __GLXclientStateRec *cl, GLbyte *pc,
51    unsigned get_programiv_offset, unsigned get_program_string_offset,
52    Bool do_swap);
53
54/**
55 * Handle both types of glGetProgramString calls.
56 *
57 * This single function handles both \c glGetProgramStringARB and
58 * \c glGetProgramStringNV.  The dispatch offsets for the functions to use
59 * for \c glGetProgramivARB and \c glGetProgramStringARB are passed in by the
60 * caller.  These can be the offsets of either the ARB versions or the NV
61 * versions.
62 */
63int DoGetProgramString(struct __GLXclientStateRec *cl, GLbyte *pc,
64		       unsigned get_programiv_offset,
65		       unsigned get_program_string_offset,
66		       Bool do_swap)
67{
68    xGLXVendorPrivateWithReplyReq * const req =
69      (xGLXVendorPrivateWithReplyReq *) pc;
70    int error;
71    __GLXcontext * const cx = __glXForceCurrent(cl, req->contextTag, & error);
72    ClientPtr client = cl->client;
73
74
75    pc += __GLX_VENDPRIV_HDR_SIZE;
76    if (cx != NULL) {
77	GLenum target;
78	GLenum pname;
79	GLint compsize = 0;
80	char *answer = NULL, answerBuffer[200];
81
82	if (do_swap) {
83	    target = (GLenum) bswap_32(*(int *)(pc + 0));
84	    pname =  (GLenum) bswap_32(*(int *)(pc + 4));
85	}
86	else {
87	    target = *(GLenum *)(pc + 0);
88	    pname =  *(GLuint *)(pc + 4);
89	}
90
91	/* The value of the GL_PROGRAM_LENGTH_ARB and GL_PROGRAM_LENGTH_NV
92	 * enumerants is the same.
93	 */
94	CALL_by_offset(GET_DISPATCH(),
95		       (void (GLAPIENTRYP)(GLuint, GLenum, GLint *)),
96		       get_programiv_offset,
97		       (target, GL_PROGRAM_LENGTH_ARB, &compsize));
98
99	if (compsize != 0) {
100	    __GLX_GET_ANSWER_BUFFER(answer,cl,compsize,1);
101	    __glXClearErrorOccured();
102
103	    CALL_by_offset(GET_DISPATCH(),
104			   (void (GLAPIENTRYP)(GLuint, GLenum, GLubyte *)),
105			   get_program_string_offset,
106			   (target, pname, answer));
107	}
108
109	if (__glXErrorOccured()) {
110	    __GLX_BEGIN_REPLY(0);
111	    __GLX_SEND_HEADER();
112	} else {
113	    __GLX_BEGIN_REPLY(compsize);
114	    ((xGLXGetTexImageReply *)&__glXReply)->width = compsize;
115	    __GLX_SEND_HEADER();
116	    __GLX_SEND_VOID_ARRAY(compsize);
117	}
118
119	error = Success;
120    }
121
122    return error;
123}
124
125int __glXDisp_GetProgramStringARB(struct __GLXclientStateRec *cl, GLbyte *pc)
126{
127    return DoGetProgramString(cl, pc, _gloffset_GetProgramivARB,
128			      _gloffset_GetProgramStringARB, False);
129}
130
131
132int __glXDispSwap_GetProgramStringARB(struct __GLXclientStateRec *cl, GLbyte *pc)
133{
134    return DoGetProgramString(cl, pc, _gloffset_GetProgramivARB,
135			      _gloffset_GetProgramStringARB, True);
136}
137
138
139int __glXDisp_GetProgramStringNV(struct __GLXclientStateRec *cl, GLbyte *pc)
140{
141    return DoGetProgramString(cl, pc, _gloffset_GetProgramivNV,
142			      _gloffset_GetProgramStringNV, False);
143}
144
145
146int __glXDispSwap_GetProgramStringNV(struct __GLXclientStateRec *cl, GLbyte *pc)
147{
148    return DoGetProgramString(cl, pc, _gloffset_GetProgramivNV,
149			      _gloffset_GetProgramStringNV, True);
150}
151