xorg-server-1.4/GL/glx/indirect_program.c

   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
  50 static 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  */
  63 int 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
 125 int __glXDisp_GetProgramStringARB(struct __GLXclientStateRec *cl, GLbyte *pc)
 126 {
 127     return DoGetProgramString(cl, pc, _gloffset_GetProgramivARB,
 128                               _gloffset_GetProgramStringARB, False);
 129 }
 130
 131
 132 int __glXDispSwap_GetProgramStringARB(struct __GLXclientStateRec *cl, GLbyte *pc)
 133 {
 134     return DoGetProgramString(cl, pc, _gloffset_GetProgramivARB,
 135                               _gloffset_GetProgramStringARB, True);
 136 }
 137
 138
 139 int __glXDisp_GetProgramStringNV(struct __GLXclientStateRec *cl, GLbyte *pc)
 140 {
 141     return DoGetProgramString(cl, pc, _gloffset_GetProgramivNV,
 142                               _gloffset_GetProgramStringNV, False);
 143 }
 144
 145
 146 int __glXDispSwap_GetProgramStringNV(struct __GLXclientStateRec *cl, GLbyte *pc)
 147 {
 148     return DoGetProgramString(cl, pc, _gloffset_GetProgramivNV,
 149                               _gloffset_GetProgramStringNV, True);
 150 }