src/mapi/glapi/gen/glX_proto_recv.py

   1 #!/usr/bin/env python
   2
   3 # (C) Copyright IBM Corporation 2005
   4 # All Rights Reserved.
   5 #
   6 # Permission is hereby granted, free of charge, to any person obtaining a
   7 # copy of this software and associated documentation files (the "Software"),
   8 # to deal in the Software without restriction, including without limitation
   9 # on the rights to use, copy, modify, merge, publish, distribute, sub
  10 # license, and/or sell copies of the Software, and to permit persons to whom
  11 # the Software is furnished to do so, subject to the following conditions:
  12 #
  13 # The above copyright notice and this permission notice (including the next
  14 # paragraph) shall be included in all copies or substantial portions of the
  15 # Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  20 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23 # IN THE SOFTWARE.
  24 #
  25 # Authors:
  26 #    Ian Romanick <idr@us.ibm.com>
  27
  28 import gl_XML, glX_XML, glX_proto_common, license
  29 import sys, getopt, string
  30
  31
  32 class PrintGlxDispatch_h(gl_XML.gl_print_base):
  33         def __init__(self):
  34                 gl_XML.gl_print_base.__init__(self)
  35
  36                 self.name = "glX_proto_recv.py (from Mesa)"
  37                 self.license = license.bsd_license_template % ( "(C) Copyright IBM Corporation 2005", "IBM")
  38
  39                 self.header_tag = "_INDIRECT_DISPATCH_H_"
  40                 return
  41
  42
  43         def printRealHeader(self):
  44                 self.printVisibility( "HIDDEN", "hidden" )
  45                 print 'struct __GLXclientStateRec;'
  46                 print ''
  47                 return
  48
  49
  50         def printBody(self, api):
  51                 for func in api.functionIterateAll():
  52                         if not func.ignore and not func.vectorequiv:
  53                                 if func.glx_rop:
  54                                         print 'extern HIDDEN void __glXDisp_%s(GLbyte * pc);' % (func.name)
  55                                         print 'extern HIDDEN void __glXDispSwap_%s(GLbyte * pc);' % (func.name)
  56                                 elif func.glx_sop or func.glx_vendorpriv:
  57                                         print 'extern HIDDEN int __glXDisp_%s(struct __GLXclientStateRec *, GLbyte *);' % (func.name)
  58                                         print 'extern HIDDEN int __glXDispSwap_%s(struct __GLXclientStateRec *, GLbyte *);' % (func.name)
  59
  60                                         if func.glx_sop and func.glx_vendorpriv:
  61                                                 n = func.glx_vendorpriv_names[0]
  62                                                 print 'extern HIDDEN int __glXDisp_%s(struct __GLXclientStateRec *, GLbyte *);' % (n)
  63                                                 print 'extern HIDDEN int __glXDispSwap_%s(struct __GLXclientStateRec *, GLbyte *);' % (n)
  64
  65                 return
  66
  67
  68 class PrintGlxDispatchFunctions(glX_proto_common.glx_print_proto):
  69         def __init__(self, do_swap):
  70                 gl_XML.gl_print_base.__init__(self)
  71                 self.name = "glX_proto_recv.py (from Mesa)"
  72                 self.license = license.bsd_license_template % ( "(C) Copyright IBM Corporation 2005", "IBM")
  73
  74                 self.real_types = [ '', '', 'uint16_t', '', 'uint32_t', '', '', '', 'uint64_t' ]
  75                 self.do_swap = do_swap
  76                 return
  77
  78
  79         def printRealHeader(self):
  80                 print '#include <X11/Xmd.h>'
  81                 print '#include <GL/gl.h>'
  82                 print '#include <GL/glxproto.h>'
  83
  84                 print '#include <inttypes.h>'
  85                 print '#include "indirect_size.h"'
  86                 print '#include "indirect_size_get.h"'
  87                 print '#include "indirect_dispatch.h"'
  88                 print '#include "glxserver.h"'
  89                 print '#include "glxbyteorder.h"'
  90                 print '#include "indirect_util.h"'
  91                 print '#include "singlesize.h"'
  92                 print '#include "glapi.h"'
  93                 print '#include "glapitable.h"'
  94                 print '#include "glthread.h"'
  95                 print '#include "glapidispatch.h"'
  96                 print ''
  97                 print '#define __GLX_PAD(x)  (((x) + 3) & ~3)'
  98                 print ''
  99                 print 'typedef struct {'
 100                 print '    __GLX_PIXEL_3D_HDR;'
 101                 print '} __GLXpixel3DHeader;'
 102                 print ''
 103                 print 'extern GLboolean __glXErrorOccured( void );'
 104                 print 'extern void __glXClearErrorOccured( void );'
 105                 print ''
 106                 print 'static const unsigned dummy_answer[2] = {0, 0};'
 107                 print ''
 108                 return
 109
 110
 111         def printBody(self, api):
 112                 if self.do_swap:
 113                         self.emit_swap_wrappers(api)
 114
 115
 116                 for func in api.functionIterateByOffset():
 117                         if not func.ignore and not func.server_handcode and not func.vectorequiv and (func.glx_rop or func.glx_sop or func.glx_vendorpriv):
 118                                 self.printFunction(func, func.name)
 119                                 if func.glx_sop and func.glx_vendorpriv:
 120                                         self.printFunction(func, func.glx_vendorpriv_names[0])
 121
 122
 123                 return
 124
 125
 126         def printFunction(self, f, name):
 127                 if (f.glx_sop or f.glx_vendorpriv) and (len(f.get_images()) != 0):
 128                         return
 129
 130                 if not self.do_swap:
 131                         base = '__glXDisp'
 132                 else:
 133                         base = '__glXDispSwap'
 134
 135                 if f.glx_rop:
 136                         print 'void %s_%s(GLbyte * pc)' % (base, name)
 137                 else:
 138                         print 'int %s_%s(__GLXclientState *cl, GLbyte *pc)' % (base, name)
 139
 140                 print '{'
 141
 142                 if f.glx_rop or f.vectorequiv:
 143                         self.printRenderFunction(f)
 144                 elif f.glx_sop or f.glx_vendorpriv:
 145                         if len(f.get_images()) == 0:
 146                                 self.printSingleFunction(f, name)
 147                 else:
 148                         print "/* Missing GLX protocol for %s. */" % (name)
 149
 150                 print '}'
 151                 print ''
 152                 return
 153
 154
 155         def swap_name(self, bytes):
 156                 return 'bswap_%u_array' % (8 * bytes)
 157
 158
 159         def emit_swap_wrappers(self, api):
 160                 self.type_map = {}
 161                 already_done = [ ]
 162
 163                 for t in api.typeIterate():
 164                         te = t.get_type_expression()
 165                         t_size = te.get_element_size()
 166
 167                         if t_size > 1 and t.glx_name:
 168
 169                                 t_name = "GL" + t.name
 170                                 self.type_map[ t_name ] = t.glx_name
 171
 172                                 if t.glx_name not in already_done:
 173                                         real_name = self.real_types[t_size]
 174
 175                                         print 'static %s' % (t_name)
 176                                         print 'bswap_%s( const void * src )' % (t.glx_name)
 177                                         print '{'
 178                                         print '    union { %s dst; %s ret; } x;' % (real_name, t_name)
 179                                         print '    x.dst = bswap_%u( *(%s *) src );' % (t_size * 8, real_name)
 180                                         print '    return x.ret;'
 181                                         print '}'
 182                                         print ''
 183                                         already_done.append( t.glx_name )
 184
 185                 for bits in [16, 32, 64]:
 186                         print 'static void *'
 187                         print 'bswap_%u_array( uint%u_t * src, unsigned count )' % (bits, bits)
 188                         print '{'
 189                         print '    unsigned  i;'
 190                         print ''
 191                         print '    for ( i = 0 ; i < count ; i++ ) {'
 192                         print '        uint%u_t temp = bswap_%u( src[i] );' % (bits, bits)
 193                         print '        src[i] = temp;'
 194                         print '    }'
 195                         print ''
 196                         print '    return src;'
 197                         print '}'
 198                         print ''
 199
 200
 201         def fetch_param(self, param):
 202                 t = param.type_string()
 203                 o = param.offset
 204                 element_size = param.size() / param.get_element_count()
 205
 206                 if self.do_swap and (element_size != 1):
 207                         if param.is_array():
 208                                 real_name = self.real_types[ element_size ]
 209
 210                                 swap_func = self.swap_name( element_size )
 211                                 return ' (%-8s)%s( (%s *) (pc + %2s), %s )' % (t, swap_func, real_name, o, param.count)
 212                         else:
 213                                 t_name = param.get_base_type_string()
 214                                 return ' (%-8s)bswap_%-7s( pc + %2s )' % (t, self.type_map[ t_name ], o)
 215                 else:
 216                         if param.is_array():
 217                                 return ' (%-8s)(pc + %2u)' % (t, o)
 218                         else:
 219                                 return '*(%-8s *)(pc + %2u)' % (t, o)
 220
 221                 return None
 222
 223
 224         def emit_function_call(self, f, retval_assign, indent):
 225                 list = []
 226
 227                 for param in f.parameterIterator():
 228                         if param.is_padding:
 229                                 continue
 230
 231                         if param.is_counter or param.is_image() or param.is_output or param.name in f.count_parameter_list or len(param.count_parameter_list):
 232                                 location = param.name
 233                         else:
 234                                 location = self.fetch_param(param)
 235
 236                         list.append( '%s        %s' % (indent, location) )
 237
 238
 239                 if len( list ):
 240                         print '%s    %sCALL_%s( GET_DISPATCH(), (' % (indent, retval_assign, f.name)
 241                         print string.join( list, ",\n" )
 242                         print '%s    ) );' % (indent)
 243                 else:
 244                         print '%s    %sCALL_%s( GET_DISPATCH(), () );' % (indent, retval_assign, f.name)
 245                 return
 246
 247
 248         def common_func_print_just_start(self, f, indent):
 249                 align64 = 0
 250                 need_blank = 0
 251
 252
 253                 f.calculate_offsets()
 254                 for param in f.parameterIterateGlxSend():
 255                         # If any parameter has a 64-bit base type, then we
 256                         # have to do alignment magic for the while thing.
 257
 258                         if param.is_64_bit():
 259                                 align64 = 1
 260
 261
 262                         # FIXME img_null_flag is over-loaded.  In addition to
 263                         # FIXME being used for images, it is used to signify
 264                         # FIXME NULL data pointers for vertex buffer object
 265                         # FIXME related functions.  Re-name it to null_data
 266                         # FIXME or something similar.
 267
 268                         if param.img_null_flag:
 269                                 print '%s    const CARD32 ptr_is_null = *(CARD32 *)(pc + %s);' % (indent, param.offset - 4)
 270                                 cond = '(ptr_is_null != 0) ? NULL : '
 271                         else:
 272                                 cond = ""
 273
 274
 275                         type_string = param.type_string()
 276
 277                         if param.is_image():
 278                                 offset = f.offset_of( param.name )
 279
 280                                 print '%s    %s const %s = (%s) (%s(pc + %s));' % (indent, type_string, param.name, type_string, cond, offset)
 281
 282                                 if param.depth:
 283                                         print '%s    __GLXpixel3DHeader * const hdr = (__GLXpixel3DHeader *)(pc);' % (indent)
 284                                 else:
 285                                         print '%s    __GLXpixelHeader * const hdr = (__GLXpixelHeader *)(pc);' % (indent)
 286
 287                                 need_blank = 1
 288                         elif param.is_counter or param.name in f.count_parameter_list:
 289                                 location = self.fetch_param(param)
 290                                 print '%s    const %s %s = %s;' % (indent, type_string, param.name, location)
 291                                 need_blank = 1
 292                         elif len(param.count_parameter_list):
 293                                 if param.size() == 1 and not self.do_swap:
 294                                         location = self.fetch_param(param)
 295                                         print '%s    %s %s = %s%s;' % (indent, type_string, param.name, cond, location)
 296                                 else:
 297                                         print '%s    %s %s;' % (indent, type_string, param.name)
 298                                 need_blank = 1
 299
 300
 301
 302                 if need_blank:
 303                         print ''
 304
 305                 if align64:
 306                         print '#ifdef __GLX_ALIGN64'
 307
 308                         if f.has_variable_size_request():
 309                                 self.emit_packet_size_calculation(f, 4)
 310                                 s = "cmdlen"
 311                         else:
 312                                 s = str((f.command_fixed_length() + 3) & ~3)
 313
 314                         print '    if ((unsigned long)(pc) & 7) {'
 315                         print '        (void) memmove(pc-4, pc, %s);' % (s)
 316                         print '        pc -= 4;'
 317                         print '    }'
 318                         print '#endif'
 319                         print ''
 320
 321
 322                 need_blank = 0
 323                 if self.do_swap:
 324                         for param in f.parameterIterateGlxSend():
 325                                 if param.count_parameter_list:
 326                                         o = param.offset
 327                                         count = param.get_element_count()
 328                                         type_size = param.size() / count
 329
 330                                         if param.counter:
 331                                                 count_name = param.counter
 332                                         else:
 333                                                 count_name = str(count)
 334
 335                                         # This is basically an ugly special-
 336                                         # case for glCallLists.
 337
 338                                         if type_size == 1:
 339                                                 x = []
 340                                                 x.append( [1, ['BYTE', 'UNSIGNED_BYTE', '2_BYTES', '3_BYTES', '4_BYTES']] )
 341                                                 x.append( [2, ['SHORT', 'UNSIGNED_SHORT']] )
 342                                                 x.append( [4, ['INT', 'UNSIGNED_INT', 'FLOAT']] )
 343
 344                                                 print '    switch(%s) {' % (param.count_parameter_list[0])
 345                                                 for sub in x:
 346                                                         for t_name in sub[1]:
 347                                                                 print '    case GL_%s:' % (t_name)
 348
 349                                                         if sub[0] == 1:
 350                                                                 print '        %s = (%s) (pc + %s); break;' % (param.name, param.type_string(), o)
 351                                                         else:
 352                                                                 swap_func = self.swap_name(sub[0])
 353                                                                 print '        %s = (%s) %s( (%s *) (pc + %s), %s ); break;' % (param.name, param.type_string(), swap_func, self.real_types[sub[0]], o, count_name)
 354                                                 print '    default:'
 355                                                 print '        return;'
 356                                                 print '    }'
 357                                         else:
 358                                                 swap_func = self.swap_name(type_size)
 359                                                 compsize = self.size_call(f, 1)
 360                                                 print '    %s = (%s) %s( (%s *) (pc + %s), %s );' % (param.name, param.type_string(), swap_func, self.real_types[type_size], o, compsize)
 361
 362                                         need_blank = 1
 363
 364                 else:
 365                         for param in f.parameterIterateGlxSend():
 366                                 if param.count_parameter_list:
 367                                         print '%s    %s = (%s) (pc + %s);' % (indent, param.name, param.type_string(), param.offset)
 368                                         need_blank = 1
 369
 370
 371                 if need_blank:
 372                         print ''
 373
 374
 375                 return
 376
 377
 378         def printSingleFunction(self, f, name):
 379                 if name not in f.glx_vendorpriv_names:
 380                         print '    xGLXSingleReq * const req = (xGLXSingleReq *) pc;'
 381                 else:
 382                         print '    xGLXVendorPrivateReq * const req = (xGLXVendorPrivateReq *) pc;'
 383
 384                 print '    int error;'
 385
 386                 if self.do_swap:
 387                     print '    struct glx_context * const cx = __glXForceCurrent(cl, bswap_CARD32( &req->contextTag ), &error);'
 388                 else:
 389                     print '    struct glx_context * const cx = __glXForceCurrent(cl, req->contextTag, &error);'
 390
 391                 print ''
 392                 if name not in f.glx_vendorpriv_names:
 393                         print '    pc += __GLX_SINGLE_HDR_SIZE;'
 394                 else:
 395                         print '    pc += __GLX_VENDPRIV_HDR_SIZE;'
 396
 397                 print '    if ( cx != NULL ) {'
 398                 self.common_func_print_just_start(f, "    ")
 399
 400
 401                 if f.return_type != 'void':
 402                         print '        %s retval;' % (f.return_type)
 403                         retval_string = "retval"
 404                         retval_assign = "retval = "
 405                 else:
 406                         retval_string = "0"
 407                         retval_assign = ""
 408
 409
 410                 type_size = 0
 411                 answer_string = "dummy_answer"
 412                 answer_count = "0"
 413                 is_array_string = "GL_FALSE"
 414
 415                 for param in f.parameterIterateOutputs():
 416                         answer_type = param.get_base_type_string()
 417                         if answer_type == "GLvoid":
 418                                 answer_type = "GLubyte"
 419
 420
 421                         c = param.get_element_count()
 422                         type_size = (param.size() / c)
 423                         if type_size == 1:
 424                                 size_scale = ""
 425                         else:
 426                                 size_scale = " * %u" % (type_size)
 427
 428
 429                         if param.count_parameter_list:
 430                                 print '        const GLuint compsize = %s;' % (self.size_call(f, 1))
 431                                 print '        %s answerBuffer[200];' %  (answer_type)
 432                                 print '        %s %s = __glXGetAnswerBuffer(cl, compsize%s, answerBuffer, sizeof(answerBuffer), %u);' % (param.type_string(), param.name, size_scale, type_size )
 433                                 answer_string = param.name
 434                                 answer_count = "compsize"
 435
 436                                 print ''
 437                                 print '        if (%s == NULL) return BadAlloc;' % (param.name)
 438                                 print '        __glXClearErrorOccured();'
 439                                 print ''
 440                         elif param.counter:
 441                                 print '        %s answerBuffer[200];' %  (answer_type)
 442                                 print '        %s %s = __glXGetAnswerBuffer(cl, %s%s, answerBuffer, sizeof(answerBuffer), %u);' % (param.type_string(), param.name, param.counter, size_scale, type_size)
 443                                 answer_string = param.name
 444                                 answer_count = param.counter
 445                         elif c >= 1:
 446                                 print '        %s %s[%u];' % (answer_type, param.name, c)
 447                                 answer_string = param.name
 448                                 answer_count = "%u" % (c)
 449
 450                         if f.reply_always_array:
 451                                 is_array_string = "GL_TRUE"
 452
 453
 454                 self.emit_function_call(f, retval_assign, "    ")
 455
 456
 457                 if f.needs_reply():
 458                         if self.do_swap:
 459                                 for param in f.parameterIterateOutputs():
 460                                         c = param.get_element_count()
 461                                         type_size = (param.size() / c)
 462
 463                                         if type_size > 1:
 464                                                 swap_name = self.swap_name( type_size )
 465                                                 print '        (void) %s( (uint%u_t *) %s, %s );' % (swap_name, 8 * type_size, param.name, answer_count)
 466
 467
 468                                 reply_func = '__glXSendReplySwap'
 469                         else:
 470                                 reply_func = '__glXSendReply'
 471
 472                         print '        %s(cl->client, %s, %s, %u, %s, %s);' % (reply_func, answer_string, answer_count, type_size, is_array_string, retval_string)
 473                 #elif f.note_unflushed:
 474                 #       print '        cx->hasUnflushedCommands = GL_TRUE;'
 475
 476                 print '        error = Success;'
 477                 print '    }'
 478                 print ''
 479                 print '    return error;'
 480                 return
 481
 482
 483         def printRenderFunction(self, f):
 484                 # There are 4 distinct phases in a rendering dispatch function.
 485                 # In the first phase we compute the sizes and offsets of each
 486                 # element in the command.  In the second phase we (optionally)
 487                 # re-align 64-bit data elements.  In the third phase we
 488                 # (optionally) byte-swap array data.  Finally, in the fourth
 489                 # phase we actually dispatch the function.
 490
 491                 self.common_func_print_just_start(f, "")
 492
 493                 images = f.get_images()
 494                 if len(images):
 495                         if self.do_swap:
 496                                 pre = "bswap_CARD32( & "
 497                                 post = " )"
 498                         else:
 499                                 pre = ""
 500                                 post = ""
 501
 502                         img = images[0]
 503
 504                         # swapBytes and lsbFirst are single byte fields, so
 505                         # the must NEVER be byte-swapped.
 506
 507                         if not (img.img_type == "GL_BITMAP" and img.img_format == "GL_COLOR_INDEX"):
 508                                 print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SWAP_BYTES,   hdr->swapBytes) );'
 509
 510                         print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_LSB_FIRST,    hdr->lsbFirst) );'
 511
 512                         print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ROW_LENGTH,   (GLint) %shdr->rowLength%s) );' % (pre, post)
 513                         if img.depth:
 514                                 print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_IMAGE_HEIGHT, (GLint) %shdr->imageHeight%s) );' % (pre, post)
 515                         print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_ROWS,    (GLint) %shdr->skipRows%s) );' % (pre, post)
 516                         if img.depth:
 517                                 print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_IMAGES,  (GLint) %shdr->skipImages%s) );' % (pre, post)
 518                         print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_SKIP_PIXELS,  (GLint) %shdr->skipPixels%s) );' % (pre, post)
 519                         print '    CALL_PixelStorei( GET_DISPATCH(), (GL_UNPACK_ALIGNMENT,    (GLint) %shdr->alignment%s) );' % (pre, post)
 520                         print ''
 521
 522
 523                 self.emit_function_call(f, "", "")
 524                 return
 525
 526
 527 if __name__ == '__main__':
 528         file_name = "gl_API.xml"
 529
 530         try:
 531                 (args, trail) = getopt.getopt(sys.argv[1:], "f:m:s")
 532         except Exception,e:
 533                 show_usage()
 534
 535         mode = "dispatch_c"
 536         do_swap = 0
 537         for (arg,val) in args:
 538                 if arg == "-f":
 539                         file_name = val
 540                 elif arg == "-m":
 541                         mode = val
 542                 elif arg == "-s":
 543                         do_swap = 1
 544
 545         if mode == "dispatch_c":
 546                 printer = PrintGlxDispatchFunctions(do_swap)
 547         elif mode == "dispatch_h":
 548                 printer = PrintGlxDispatch_h()
 549         else:
 550                 show_usage()
 551
 552         api = gl_XML.parse_GL_API( file_name, glX_proto_common.glx_proto_item_factory() )
 553
 554         printer.Print( api )