git.cworth.org Git - apitrace/blob - glstate.py

   1 ##########################################################################
   2 #
   3 # Copyright 2011 Jose Fonseca
   4 # All Rights Reserved.
   5 #
   6 # Permission is hereby granted, free of charge, to any person obtaining a copy
   7 # of this software and associated documentation files (the "Software"), to deal
   8 # in the Software without restriction, including without limitation the rights
   9 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 # copies of the Software, and to permit persons to whom the Software is
  11 # furnished to do so, subject to the following conditions:
  12 #
  13 # The above copyright notice and this permission notice shall be included in
  14 # all copies or substantial portions of the 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
  19 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 # THE SOFTWARE.
  23 #
  24 ##########################################################################/
  25
  26
  27 '''Generate code to dump most GL state into JSON.'''
  28
  29
  30 from stdapi import *
  31
  32 from gltypes import *
  33 from glparams import *
  34
  35
  36 texture_targets = [
  37     ('GL_TEXTURE_1D', 'GL_TEXTURE_BINDING_1D'),
  38     ('GL_TEXTURE_2D', 'GL_TEXTURE_BINDING_2D'),
  39     ('GL_TEXTURE_3D', 'GL_TEXTURE_BINDING_3D'),
  40     ('GL_TEXTURE_RECTANGLE', 'GL_TEXTURE_BINDING_RECTANGLE'),
  41     ('GL_TEXTURE_CUBE_MAP', 'GL_TEXTURE_BINDING_CUBE_MAP')
  42 ]
  43
  44
  45 class GetInflector:
  46     '''Objects that describes how to inflect.'''
  47
  48     reduced_types = {
  49         B: I,
  50         E: I,
  51         I: F,
  52     }
  53
  54     def __init__(self, radical, inflections, suffix = ''):
  55         self.radical = radical
  56         self.inflections = inflections
  57         self.suffix = suffix
  58
  59     def reduced_type(self, type):
  60         if type in self.inflections:
  61             return type
  62         if type in self.reduced_types:
  63             return self.reduced_type(self.reduced_types[type])
  64         raise NotImplementedError
  65
  66     def inflect(self, type):
  67         return self.radical + self.inflection(type) + self.suffix
  68
  69     def inflection(self, type):
  70         type = self.reduced_type(type)
  71         assert type in self.inflections
  72         return self.inflections[type]
  73
  74     def __str__(self):
  75         return self.radical + self.suffix
  76
  77
  78 class StateGetter(Visitor):
  79     '''Type visitor that is able to extract the state via one of the glGet*
  80     functions.
  81
  82     It will declare any temporary variable
  83     '''
  84
  85     def __init__(self, radical, inflections, suffix=''):
  86         self.inflector = GetInflector(radical, inflections)
  87         self.suffix = suffix
  88
  89     def __call__(self, *args):
  90         pname = args[-1]
  91
  92         for function, type, count, name in parameters:
  93             if type is X:
  94                 continue
  95             if name == pname:
  96                 if count != 1:
  97                     type = Array(type, str(count))
  98
  99                 return type, self.visit(type, args)
 100
 101         raise NotImplementedError
 102
 103     def temp_name(self, args):
 104         '''Return the name of a temporary variable to hold the state.'''
 105         pname = args[-1]
 106
 107         return pname[3:].lower()
 108
 109     def visit_const(self, const, args):
 110         return self.visit(const.type, args)
 111
 112     def visit_scalar(self, type, args):
 113         temp_name = self.temp_name(args)
 114         elem_type = self.inflector.reduced_type(type)
 115         inflection = self.inflector.inflect(type)
 116         if inflection.endswith('v'):
 117             print '    %s %s = 0;' % (elem_type, temp_name)
 118             print '    %s(%s, &%s);' % (inflection + self.suffix, ', '.join(args), temp_name)
 119         else:
 120             print '    %s %s = %s(%s);' % (elem_type, temp_name, inflection + self.suffix, ', '.join(args))
 121         return temp_name
 122
 123     def visit_string(self, string, args):
 124         temp_name = self.temp_name(args)
 125         inflection = self.inflector.inflect(string)
 126         assert not inflection.endswith('v')
 127         print '    %s %s = (%s)%s(%s);' % (string, temp_name, string, inflection + self.suffix, ', '.join(args))
 128         return temp_name
 129
 130     def visit_alias(self, alias, args):
 131         return self.visit_scalar(alias, args)
 132
 133     def visit_enum(self, enum, args):
 134         return self.visit(GLint, args)
 135
 136     def visit_bitmask(self, bitmask, args):
 137         return self.visit(GLint, args)
 138
 139     def visit_array(self, array, args):
 140         temp_name = self.temp_name(args)
 141         if array.length == '1':
 142             return self.visit(array.type)
 143         elem_type = self.inflector.reduced_type(array.type)
 144         inflection = self.inflector.inflect(array.type)
 145         assert inflection.endswith('v')
 146         print '    %s %s[%s];' % (elem_type, temp_name, array.length)
 147         print '    memset(%s, 0, %s * sizeof *%s);' % (temp_name, array.length, temp_name)
 148         print '    %s(%s, %s);' % (inflection + self.suffix, ', '.join(args), temp_name)
 149         return temp_name
 150
 151     def visit_opaque(self, pointer, args):
 152         temp_name = self.temp_name(args)
 153         inflection = self.inflector.inflect(pointer)
 154         assert inflection.endswith('v')
 155         print '    GLvoid *%s;' % temp_name
 156         print '    %s(%s, &%s);' % (inflection + self.suffix, ', '.join(args), temp_name)
 157         return temp_name
 158
 159
 160 glGet = StateGetter('glGet', {
 161     B: 'Booleanv',
 162     I: 'Integerv',
 163     F: 'Floatv',
 164     D: 'Doublev',
 165     S: 'String',
 166     P: 'Pointerv',
 167 })
 168
 169 glGetMaterial = StateGetter('glGetMaterial', {I: 'iv', F: 'fv'})
 170 glGetLight = StateGetter('glGetLight', {I: 'iv', F: 'fv'})
 171 glGetVertexAttrib = StateGetter('glGetVertexAttrib', {I: 'iv', F: 'fv', D: 'dv', P: 'Pointerv'})
 172 glGetTexParameter = StateGetter('glGetTexParameter', {I: 'iv', F: 'fv'})
 173 glGetTexEnv = StateGetter('glGetTexEnv', {I: 'iv', F: 'fv'})
 174 glGetTexLevelParameter = StateGetter('glGetTexLevelParameter', {I: 'iv', F: 'fv'})
 175 glGetProgramARB = StateGetter('glGetProgram', {I: 'iv', F: 'fv', S: 'Stringv'}, 'ARB')
 176
 177
 178 class JsonWriter(Visitor):
 179     '''Type visitor that will dump a value of the specified type through the
 180     JSON writer.
 181
 182     It expects a previously declared JSONWriter instance named "json".'''
 183
 184     def visit_literal(self, literal, instance):
 185         if literal.format == 'Bool':
 186             print '    json.writeBool(%s);' % instance
 187         elif literal.format in ('SInt', 'Uint', 'Float', 'Double'):
 188             print '    json.writeNumber(%s);' % instance
 189         else:
 190             raise NotImplementedError
 191
 192     def visit_string(self, string, instance):
 193         assert string.length is None
 194         print '    json.writeString((const char *)%s);' % instance
 195
 196     def visit_enum(self, enum, instance):
 197         if enum.expr == 'GLenum':
 198             print '    writeEnum(json, %s);' % instance
 199         else:
 200             print '    json.writeNumber(%s);' % instance
 201
 202     def visit_bitmask(self, bitmask, instance):
 203         raise NotImplementedError
 204
 205     def visit_alias(self, alias, instance):
 206         self.visit(alias.type, instance)
 207
 208     def visit_opaque(self, opaque, instance):
 209         print '    json.writeNumber((size_t)%s);' % instance
 210
 211     __index = 0
 212
 213     def visit_array(self, array, instance):
 214         index = '__i%u' % JsonWriter.__index
 215         JsonWriter.__index += 1
 216         print '    json.beginArray();'
 217         print '    for (unsigned %s = 0; %s < %s; ++%s) {' % (index, index, array.length, index)
 218         self.visit(array.type, '%s[%s]' % (instance, index))
 219         print '    }'
 220         print '    json.endArray();'
 221
 222
 223
 224 class StateDumper:
 225     '''Class to generate code to dump all GL state in JSON format via
 226     stdout.'''
 227
 228     def __init__(self):
 229         pass
 230
 231     def dump(self):
 232         print '#include <string.h>'
 233         print '#include <iostream>'
 234         print '#include <algorithm>'
 235         print
 236         print '#include "image.hpp"'
 237         print '#include "json.hpp"'
 238         print '#include "glimports.hpp"'
 239         print '#include "glproc.hpp"'
 240         print '#include "glsize.hpp"'
 241         print '#include "glretrace.hpp"'
 242         print
 243
 244         print 'static const char *'
 245         print '_enum_string(GLenum pname)'
 246         print '{'
 247         print '    switch(pname) {'
 248         for name in GLenum.values:
 249             print '    case %s:' % name
 250             print '        return "%s";' % name
 251         print '    default:'
 252         print '        return NULL;'
 253         print '    }'
 254         print '}'
 255         print
 256
 257         print 'static const char *'
 258         print 'enum_string(GLenum pname)'
 259         print '{'
 260         print '    const char *s = _enum_string(pname);'
 261         print '    if (s) {'
 262         print '        return s;'
 263         print '    } else {'
 264         print '        static char buf[16];'
 265         print '        snprintf(buf, sizeof buf, "0x%04x", pname);'
 266         print '        return buf;'
 267         print '    }'
 268         print '}'
 269         print
 270
 271         print 'static inline void'
 272         print 'writeEnum(JSONWriter &json, GLenum pname)'
 273         print '{'
 274         print '    const char *s = _enum_string(pname);'
 275         print '    if (s) {'
 276         print '        json.writeString(s);'
 277         print '    } else {'
 278         print '        json.writeNumber(pname);'
 279         print '    }'
 280         print '}'
 281         print
 282
 283         # shaders
 284         print '''
 285 static void
 286 writeShader(JSONWriter &json, GLuint shader)
 287 {
 288     if (!shader) {
 289         return;
 290     }
 291
 292     GLint shader_type = 0;
 293     glGetShaderiv(shader, GL_SHADER_TYPE, &shader_type);
 294     if (!shader_type) {
 295         return;
 296     }
 297
 298     GLint source_length = 0;
 299     glGetShaderiv(shader, GL_SHADER_SOURCE_LENGTH, &source_length);
 300     if (!source_length) {
 301         return;
 302     }
 303
 304     GLchar *source = new GLchar[source_length];
 305     GLsizei length = 0;
 306     source[0] = 0;
 307     glGetShaderSource(shader, source_length, &length, source);
 308
 309     json.beginMember(enum_string(shader_type));
 310     json.writeString(source);
 311     json.endMember();
 312
 313     delete [] source;
 314 }
 315
 316 static inline void
 317 writeCurrentProgram(JSONWriter &json)
 318 {
 319     GLint program = 0;
 320     glGetIntegerv(GL_CURRENT_PROGRAM, &program);
 321     if (!program) {
 322         return;
 323     }
 324
 325     GLint attached_shaders = 0;
 326     glGetProgramiv(program, GL_ATTACHED_SHADERS, &attached_shaders);
 327     if (!attached_shaders) {
 328         return;
 329     }
 330
 331     GLuint *shaders = new GLuint[attached_shaders];
 332     GLsizei count = 0;
 333     glGetAttachedShaders(program, attached_shaders, &count, shaders);
 334     for (GLsizei i = 0; i < count; ++ i) {
 335        writeShader(json, shaders[i]);
 336     }
 337     delete [] shaders;
 338 }
 339
 340 static inline void
 341 writeArbProgram(JSONWriter &json, GLenum target)
 342 {
 343     if (!glIsEnabled(target)) {
 344         return;
 345     }
 346
 347     GLint program_length = 0;
 348     glGetProgramivARB(target, GL_PROGRAM_LENGTH_ARB, &program_length);
 349     if (!program_length) {
 350         return;
 351     }
 352
 353     GLchar *source = new GLchar[program_length + 1];
 354     source[0] = 0;
 355     glGetProgramStringARB(target, GL_PROGRAM_STRING_ARB, source);
 356     source[program_length] = 0;
 357
 358     json.beginMember(enum_string(target));
 359     json.writeString(source);
 360     json.endMember();
 361
 362     delete [] source;
 363 }
 364 '''
 365
 366         # texture image
 367         print '''
 368 static inline void
 369 writeTextureImage(JSONWriter &json, GLenum target, GLint level)
 370 {
 371     GLint width, height = 1, depth = 1;
 372
 373     width = 0;
 374     glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);
 375
 376     if (target != GL_TEXTURE_1D) {
 377         height = 0;
 378         glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);
 379         if (target == GL_TEXTURE_3D) {
 380             depth = 0;
 381             glGetTexLevelParameteriv(target, level, GL_TEXTURE_DEPTH, &depth);
 382         }
 383     }
 384
 385     if (width <= 0 || height <= 0 || depth <= 0) {
 386         return;
 387     } else {
 388         char label[512];
 389
 390         GLint active_texture = GL_TEXTURE0;
 391         glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);
 392         snprintf(label, sizeof label, "%s, %s, level = %i", _enum_string(active_texture), _enum_string(target), level);
 393
 394         json.beginMember(label);
 395
 396         json.beginObject();
 397
 398         // Tell the GUI this is no ordinary object, but an image
 399         json.writeStringMember("__class__", "image");
 400
 401         json.writeNumberMember("__width__", width);
 402         json.writeNumberMember("__height__", height);
 403         json.writeNumberMember("__depth__", depth);
 404
 405         // Hardcoded for now, but we could chose types more adequate to the
 406         // texture internal format
 407         json.writeStringMember("__type__", "uint8");
 408         json.writeBoolMember("__normalized__", true);
 409         json.writeNumberMember("__channels__", 4);
 410
 411         GLubyte *pixels = new GLubyte[depth*width*height*4];
 412
 413         glGetTexImage(target, level, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 414
 415         json.beginMember("__data__");
 416         char *pngBuffer;
 417         int pngBufferSize;
 418         Image::writePixelsToBuffer(pixels, width, height, 4, false, &pngBuffer, &pngBufferSize);
 419         json.writeBase64(pngBuffer, pngBufferSize);
 420         free(pngBuffer);
 421         json.endMember(); // __data__
 422
 423         delete [] pixels;
 424         json.endObject();
 425     }
 426 }
 427
 428 static inline void
 429 writeDrawBufferImage(JSONWriter &json, GLenum format)
 430 {
 431     GLint channels = __gl_format_channels(format);
 432
 433     if (!glretrace::drawable) {
 434         json.writeNull();
 435     } else {
 436         GLint width  = glretrace::drawable->width;
 437         GLint height = glretrace::drawable->height;
 438
 439         json.beginObject();
 440
 441         // Tell the GUI this is no ordinary object, but an image
 442         json.writeStringMember("__class__", "image");
 443
 444         json.writeNumberMember("__width__", width);
 445         json.writeNumberMember("__height__", height);
 446         json.writeNumberMember("__depth__", 1);
 447
 448         // Hardcoded for now, but we could chose types more adequate to the
 449         // texture internal format
 450         json.writeStringMember("__type__", "uint8");
 451         json.writeBoolMember("__normalized__", true);
 452         json.writeNumberMember("__channels__", channels);
 453
 454         GLubyte *pixels = new GLubyte[width*height*channels];
 455
 456         GLint drawbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;
 457         GLint readbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;
 458         glGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);
 459         glGetIntegerv(GL_READ_BUFFER, &readbuffer);
 460         glReadBuffer(drawbuffer);
 461
 462         glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
 463         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 464
 465         glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, pixels);
 466
 467         glPopClientAttrib();
 468         glReadBuffer(readbuffer);
 469
 470         json.beginMember("__data__");
 471         char *pngBuffer;
 472         int pngBufferSize;
 473         Image::writePixelsToBuffer(pixels, width, height, channels, false, &pngBuffer, &pngBufferSize);
 474         //std::cerr <<" Before = "<<(width * height * channels * sizeof *pixels)
 475         //          <<", after = "<<pngBufferSize << ", ratio = " << double(width * height * channels * sizeof *pixels)/pngBufferSize;
 476         json.writeBase64(pngBuffer, pngBufferSize);
 477         free(pngBuffer);
 478         json.endMember(); // __data__
 479
 480         delete [] pixels;
 481         json.endObject();
 482     }
 483 }
 484
 485 static inline GLuint
 486 downsampledFramebuffer(GLuint oldFbo, GLint drawbuffer,
 487                        GLint colorRb, GLint depthRb, GLint stencilRb,
 488                        GLuint *rbs, GLint *numRbs)
 489 {
 490     GLuint fbo;
 491     GLint format;
 492     GLint w, h;
 493
 494     *numRbs = 0;
 495
 496     glGenFramebuffers(1, &fbo);
 497     glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 498
 499     glBindRenderbuffer(GL_RENDERBUFFER, colorRb);
 500     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 501                                  GL_RENDERBUFFER_WIDTH, &w);
 502     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 503                                  GL_RENDERBUFFER_HEIGHT, &h);
 504     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 505                                  GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 506
 507     glGenRenderbuffers(1, &rbs[*numRbs]);
 508     glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 509     glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 510     glFramebufferRenderbuffer(GL_FRAMEBUFFER, drawbuffer,
 511                               GL_RENDERBUFFER, rbs[*numRbs]);
 512
 513     glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 514     glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 515     glDrawBuffer(drawbuffer);
 516     glReadBuffer(drawbuffer);
 517     glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 518                       GL_COLOR_BUFFER_BIT, GL_NEAREST);
 519     glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 520     ++*numRbs;
 521
 522     if (stencilRb == depthRb && stencilRb) {
 523         //combined depth and stencil buffer
 524         glBindRenderbuffer(GL_RENDERBUFFER, depthRb);
 525         glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 526                                      GL_RENDERBUFFER_WIDTH, &w);
 527         glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 528                                      GL_RENDERBUFFER_HEIGHT, &h);
 529         glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 530                                      GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 531
 532         glGenRenderbuffers(1, &rbs[*numRbs]);
 533         glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 534         glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 535         glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
 536                                   GL_RENDERBUFFER, rbs[*numRbs]);
 537         glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 538         glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 539         glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 540                           GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT, GL_NEAREST);
 541         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 542         ++*numRbs;
 543     } else {
 544         if (depthRb) {
 545             glBindRenderbuffer(GL_RENDERBUFFER, depthRb);
 546             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 547                                          GL_RENDERBUFFER_WIDTH, &w);
 548             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 549                                          GL_RENDERBUFFER_HEIGHT, &h);
 550             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 551                                          GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 552
 553             glGenRenderbuffers(1, &rbs[*numRbs]);
 554             glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 555             glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 556             glFramebufferRenderbuffer(GL_FRAMEBUFFER,
 557                                       GL_DEPTH_ATTACHMENT,
 558                                       GL_RENDERBUFFER, rbs[*numRbs]);
 559             glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 560             glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 561             glDrawBuffer(GL_DEPTH_ATTACHMENT);
 562             glReadBuffer(GL_DEPTH_ATTACHMENT);
 563             glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 564                               GL_DEPTH_BUFFER_BIT, GL_NEAREST);
 565             ++*numRbs;
 566         }
 567         if (stencilRb) {
 568             glBindRenderbuffer(GL_RENDERBUFFER, stencilRb);
 569             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 570                                          GL_RENDERBUFFER_WIDTH, &w);
 571             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 572                                          GL_RENDERBUFFER_HEIGHT, &h);
 573             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 574                                      GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 575
 576             glGenRenderbuffers(1, &rbs[*numRbs]);
 577             glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 578             glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 579             glFramebufferRenderbuffer(GL_FRAMEBUFFER,
 580                                       GL_STENCIL_ATTACHMENT,
 581                                       GL_RENDERBUFFER, rbs[*numRbs]);
 582             glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 583             glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 584             glDrawBuffer(GL_STENCIL_ATTACHMENT);
 585             glReadBuffer(GL_STENCIL_ATTACHMENT);
 586             glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 587                               GL_STENCIL_BUFFER_BIT, GL_NEAREST);
 588             ++*numRbs;
 589         }
 590     }
 591
 592     return fbo;
 593 }
 594
 595 static void
 596 writeDrawBuffers(JSONWriter &json, GLboolean writeDepth, GLboolean writeStencil)
 597 {
 598     json.beginMember("GL_RGBA");
 599     writeDrawBufferImage(json, GL_RGBA);
 600     json.endMember();
 601
 602     if (writeDepth) {
 603         json.beginMember("GL_DEPTH_COMPONENT");
 604         writeDrawBufferImage(json, GL_DEPTH_COMPONENT);
 605         json.endMember();
 606     }
 607
 608     if (writeStencil) {
 609         json.beginMember("GL_STENCIL_INDEX");
 610         writeDrawBufferImage(json, GL_STENCIL_INDEX);
 611         json.endMember();
 612     }
 613 }
 614
 615 '''
 616
 617         # textures
 618         print 'static inline void'
 619         print 'writeTexture(JSONWriter &json, GLenum target, GLenum binding)'
 620         print '{'
 621         print '    GLint texture_binding = 0;'
 622         print '    glGetIntegerv(binding, &texture_binding);'
 623         print '    if (!glIsEnabled(target) && !texture_binding) {'
 624         print '        return;'
 625         print '    }'
 626         print
 627         print '    GLint level = 0;'
 628         print '    do {'
 629         print '        GLint width = 0, height = 0;'
 630         print '        glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);'
 631         print '        glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);'
 632         print '        if (!width || !height) {'
 633         print '            break;'
 634         print '        }'
 635         print
 636         print '        if (target == GL_TEXTURE_CUBE_MAP) {'
 637         print '            for (int face = 0; face < 6; ++face) {'
 638         print '                writeTextureImage(json, GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, level);'
 639         print '            }'
 640         print '        } else {'
 641         print '            writeTextureImage(json, target, level);'
 642         print '        }'
 643         print
 644         print '        ++level;'
 645         print '    } while(true);'
 646         print '}'
 647         print
 648
 649         print 'void glretrace::state_dump(std::ostream &os)'
 650         print '{'
 651         print '    JSONWriter json(os);'
 652         self.dump_parameters()
 653         self.dump_current_program()
 654         self.dump_textures()
 655         self.dump_framebuffer()
 656         print '}'
 657         print
 658
 659     def dump_parameters(self):
 660         print '    json.beginMember("parameters");'
 661         print '    json.beginObject();'
 662
 663         self.dump_atoms(glGet)
 664
 665         self.dump_material_params()
 666         self.dump_light_params()
 667         self.dump_vertex_attribs()
 668         self.dump_texenv_params()
 669         self.dump_program_params()
 670         self.dump_texture_parameters()
 671
 672         print '    json.endObject();'
 673         print '    json.endMember(); // parameters'
 674         print
 675
 676     def dump_material_params(self):
 677         for face in ['GL_FRONT', 'GL_BACK']:
 678             print '    json.beginMember("%s");' % face
 679             print '    json.beginObject();'
 680             self.dump_atoms(glGetMaterial, face)
 681             print '    json.endObject();'
 682         print
 683
 684     def dump_light_params(self):
 685         print '    GLint max_lights = 0;'
 686         print '    __glGetIntegerv(GL_MAX_LIGHTS, &max_lights);'
 687         print '    for (GLint index = 0; index < max_lights; ++index) {'
 688         print '        GLenum light = GL_LIGHT0 + index;'
 689         print '        if (glIsEnabled(light)) {'
 690         print '            char name[32];'
 691         print '            snprintf(name, sizeof name, "GL_LIGHT%i", index);'
 692         print '            json.beginMember(name);'
 693         print '            json.beginObject();'
 694         self.dump_atoms(glGetLight, '    GL_LIGHT0 + index')
 695         print '            json.endObject();'
 696         print '            json.endMember(); // GL_LIGHTi'
 697         print '        }'
 698         print '    }'
 699         print
 700
 701     def dump_texenv_params(self):
 702         for target in ['GL_TEXTURE_ENV', 'GL_TEXTURE_FILTER_CONTROL', 'GL_POINT_SPRITE']:
 703             if target != 'GL_TEXTURE_FILTER_CONTROL':
 704                 print '    if (glIsEnabled(%s)) {' % target
 705             else:
 706                 print '    {'
 707             print '        json.beginMember("%s");' % target
 708             print '        json.beginObject();'
 709             self.dump_atoms(glGetTexEnv, target)
 710             print '        json.endObject();'
 711             print '    }'
 712
 713     def dump_vertex_attribs(self):
 714         print '    GLint max_vertex_attribs = 0;'
 715         print '    __glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_vertex_attribs);'
 716         print '    for (GLint index = 0; index < max_vertex_attribs; ++index) {'
 717         print '        char name[32];'
 718         print '        snprintf(name, sizeof name, "GL_VERTEX_ATTRIB_ARRAY%i", index);'
 719         print '        json.beginMember(name);'
 720         print '        json.beginObject();'
 721         self.dump_atoms(glGetVertexAttrib, 'index')
 722         print '        json.endObject();'
 723         print '        json.endMember(); // GL_VERTEX_ATTRIB_ARRAYi'
 724         print '    }'
 725         print
 726
 727     program_targets = [
 728         'GL_FRAGMENT_PROGRAM_ARB',
 729         'GL_VERTEX_PROGRAM_ARB',
 730     ]
 731
 732     def dump_program_params(self):
 733         for target in self.program_targets:
 734             print '    if (glIsEnabled(%s)) {' % target
 735             print '        json.beginMember("%s");' % target
 736             print '        json.beginObject();'
 737             self.dump_atoms(glGetProgramARB, target)
 738             print '        json.endObject();'
 739             print '    }'
 740
 741     def dump_texture_parameters(self):
 742         print '    {'
 743         print '        GLint active_texture = GL_TEXTURE0;'
 744         print '        glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);'
 745         print '        GLint max_texture_coords = 0;'
 746         print '        glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_texture_coords);'
 747         print '        GLint max_combined_texture_image_units = 0;'
 748         print '        glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_combined_texture_image_units);'
 749         print '        GLint max_units = std::max(max_combined_texture_image_units, max_texture_coords);'
 750         print '        for (GLint unit = 0; unit < max_units; ++unit) {'
 751         print '            char name[32];'
 752         print '            snprintf(name, sizeof name, "GL_TEXTURE%i", unit);'
 753         print '            json.beginMember(name);'
 754         print '            glActiveTexture(GL_TEXTURE0 + unit);'
 755         print '            json.beginObject();'
 756         print '            GLint texture;'
 757         print
 758         for target, binding in texture_targets:
 759             print '            // %s' % target
 760             print '            texture = 0;'
 761             print '            glGetIntegerv(%s, &texture);' % binding
 762             print '            if (glIsEnabled(%s) || texture) {' % target
 763             print '                json.beginMember("%s");' % target
 764             print '                json.beginObject();'
 765             self.dump_atoms(glGetTexParameter, target)
 766             # We only dump the first level parameters
 767             self.dump_atoms(glGetTexLevelParameter, target, "0")
 768             print '                json.endObject();'
 769             print '                json.endMember(); // %s' % target
 770             print '            }'
 771             print
 772         print '            json.endObject();'
 773         print '            json.endMember(); // GL_TEXTUREi'
 774         print '        }'
 775         print '        glActiveTexture(active_texture);'
 776         print '    }'
 777         print
 778
 779     def dump_current_program(self):
 780         print '    json.beginMember("shaders");'
 781         print '    json.beginObject();'
 782         print '    writeCurrentProgram(json);'
 783         for target in self.program_targets:
 784             print '    writeArbProgram(json, %s);' % target
 785         print '    json.endObject();'
 786         print '    json.endMember(); //shaders'
 787         print
 788
 789     def dump_textures(self):
 790         print '    {'
 791         print '        json.beginMember("textures");'
 792         print '        json.beginObject();'
 793         print '        GLint active_texture = GL_TEXTURE0;'
 794         print '        glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);'
 795         print '        GLint max_texture_coords = 0;'
 796         print '        glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_texture_coords);'
 797         print '        GLint max_combined_texture_image_units = 0;'
 798         print '        glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_combined_texture_image_units);'
 799         print '        GLint max_units = std::max(max_combined_texture_image_units, max_texture_coords);'
 800         print '        for (GLint unit = 0; unit < max_units; ++unit) {'
 801         print '            GLenum texture = GL_TEXTURE0 + unit;'
 802         print '            glActiveTexture(texture);'
 803         for target, binding in texture_targets:
 804             print '            writeTexture(json, %s, %s);' % (target, binding)
 805         print '        }'
 806         print '        glActiveTexture(active_texture);'
 807         print '        json.endObject();'
 808         print '        json.endMember(); // textures'
 809         print '    }'
 810         print
 811
 812     def dump_framebuffer(self):
 813         print '    json.beginMember("framebuffer");'
 814         print '    json.beginObject();'
 815         # TODO: Handle real FBOs
 816         print
 817         print '    GLint boundDrawFbo = 0, boundReadFbo = 0;'
 818         print '    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &boundDrawFbo);'
 819         print '    glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &boundReadFbo);'
 820         print '    if (!boundDrawFbo) {'
 821         print '        GLint depth_bits = 0;'
 822         print '        glGetIntegerv(GL_DEPTH_BITS, &depth_bits);'
 823         print '        GLint stencil_bits = 0;'
 824         print '        glGetIntegerv(GL_STENCIL_BITS, &stencil_bits);'
 825         print '        writeDrawBuffers(json, depth_bits, stencil_bits);'
 826         print '    } else {'
 827         print '        GLint colorRb, stencilRb, depthRb;'
 828         print '        GLint boundRb;'
 829         print '        glGetIntegerv(GL_RENDERBUFFER_BINDING, &boundRb);'
 830         print '        GLint drawbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;'
 831         print '        glGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);'
 832         print
 833         print '        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
 834         print '                                              drawbuffer,'
 835         print '                                              GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
 836         print '                                              &colorRb);'
 837         print '        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
 838         print '                                              GL_DEPTH_ATTACHMENT,'
 839         print '                                              GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
 840         print '                                              &depthRb);'
 841         print '        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
 842         print '                                              GL_STENCIL_ATTACHMENT,'
 843         print '                                              GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
 844         print '                                              &stencilRb);'
 845         print
 846         print '        GLint colorSamples, depthSamples, stencilSamples;'
 847         print '        GLuint rbs[3];'
 848         print '        GLint numRbs = 0;'
 849         print '        GLuint fboCopy = 0;'
 850         print '        glBindRenderbuffer(GL_RENDERBUFFER, colorRb);'
 851         print '        glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
 852         print '                                     GL_RENDERBUFFER_SAMPLES, &colorSamples);'
 853         print '        glBindRenderbuffer(GL_RENDERBUFFER, depthRb);'
 854         print '        glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
 855         print '                                     GL_RENDERBUFFER_SAMPLES, &depthSamples);'
 856         print '        glBindRenderbuffer(GL_RENDERBUFFER, stencilRb);'
 857         print '        glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
 858         print '                                     GL_RENDERBUFFER_SAMPLES, &stencilSamples);'
 859         print '        glBindRenderbuffer(GL_RENDERBUFFER, boundRb);'
 860         print
 861         print '        if (colorSamples || depthSamples || stencilSamples) {'
 862         print '            //glReadPixels doesnt support multisampled buffers so we need'
 863         print '            // to blit the fbo to a temporary one'
 864         print '            fboCopy = downsampledFramebuffer(boundDrawFbo, drawbuffer,'
 865         print '                                             colorRb, depthRb, stencilRb,'
 866         print '                                             rbs, &numRbs);'
 867         print '        }'
 868         print '        glDrawBuffer(drawbuffer);'
 869         print '        glReadBuffer(drawbuffer);'
 870         print
 871         print '        writeDrawBuffers(json, depthRb, stencilRb);'
 872         print
 873         print '        if (fboCopy) {'
 874         print '            glBindFramebuffer(GL_FRAMEBUFFER, boundDrawFbo);'
 875         print '            glBindFramebuffer(GL_READ_FRAMEBUFFER, boundReadFbo);'
 876         print '            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, boundDrawFbo);'
 877         print '            glBindRenderbuffer(GL_RENDERBUFFER_BINDING, boundRb);'
 878         print '            glDeleteRenderbuffers(numRbs, rbs);'
 879         print '            glDeleteFramebuffers(1, &fboCopy);'
 880         print '        }'
 881         print '    }'
 882         print
 883         print '    json.endObject();'
 884         print '    json.endMember(); // framebuffer'
 885         pass
 886
 887     def dump_atoms(self, getter, *args):
 888         for function, type, count, name in parameters:
 889             inflection = getter.inflector.radical + getter.suffix
 890             if inflection not in function.split(','):
 891                 continue
 892             if type is X:
 893                 continue
 894             print '        // %s' % name
 895             print '        {'
 896             type, value = getter(*(args + (name,)))
 897             print '            if (glGetError() != GL_NO_ERROR) {'
 898             #print '                std::cerr << "warning: %s(%s) failed\\n";' % (inflection, name)
 899             print '            } else {'
 900             print '                json.beginMember("%s");' % name
 901             JsonWriter().visit(type, value)
 902             print '                json.endMember();'
 903             print '            }'
 904             print '        }'
 905             print
 906
 907
 908 if __name__ == '__main__':
 909     StateDumper().dump()