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 glGetProgram = StateGetter('glGetProgram', {I: 'iv'})
 176 glGetProgramARB = StateGetter('glGetProgram', {I: 'iv', F: 'fv', S: 'Stringv'}, 'ARB')
 177
 178
 179 class JsonWriter(Visitor):
 180     '''Type visitor that will dump a value of the specified type through the
 181     JSON writer.
 182
 183     It expects a previously declared JSONWriter instance named "json".'''
 184
 185     def visit_literal(self, literal, instance):
 186         if literal.format == 'Bool':
 187             print '    json.writeBool(%s);' % instance
 188         elif literal.format in ('SInt', 'Uint', 'Float', 'Double'):
 189             print '    json.writeNumber(%s);' % instance
 190         else:
 191             raise NotImplementedError
 192
 193     def visit_string(self, string, instance):
 194         assert string.length is None
 195         print '    json.writeString((const char *)%s);' % instance
 196
 197     def visit_enum(self, enum, instance):
 198         if enum.expr == 'GLenum':
 199             print '    writeEnum(json, %s);' % instance
 200         else:
 201             print '    json.writeNumber(%s);' % instance
 202
 203     def visit_bitmask(self, bitmask, instance):
 204         raise NotImplementedError
 205
 206     def visit_alias(self, alias, instance):
 207         self.visit(alias.type, instance)
 208
 209     def visit_opaque(self, opaque, instance):
 210         print '    json.writeNumber((size_t)%s);' % instance
 211
 212     __index = 0
 213
 214     def visit_array(self, array, instance):
 215         index = '__i%u' % JsonWriter.__index
 216         JsonWriter.__index += 1
 217         print '    json.beginArray();'
 218         print '    for (unsigned %s = 0; %s < %s; ++%s) {' % (index, index, array.length, index)
 219         self.visit(array.type, '%s[%s]' % (instance, index))
 220         print '    }'
 221         print '    json.endArray();'
 222
 223
 224
 225 class StateDumper:
 226     '''Class to generate code to dump all GL state in JSON format via
 227     stdout.'''
 228
 229     def __init__(self):
 230         pass
 231
 232     def dump(self):
 233         print '#include <string.h>'
 234         print '#include <iostream>'
 235         print '#include <algorithm>'
 236         print
 237         print '#include "image.hpp"'
 238         print '#include "json.hpp"'
 239         print '#include "glimports.hpp"'
 240         print '#include "glproc.hpp"'
 241         print '#include "glsize.hpp"'
 242         print '#include "glretrace.hpp"'
 243         print
 244
 245         print 'static const char *'
 246         print '_enum_string(GLenum pname)'
 247         print '{'
 248         print '    switch(pname) {'
 249         for name in GLenum.values:
 250             print '    case %s:' % name
 251             print '        return "%s";' % name
 252         print '    default:'
 253         print '        return NULL;'
 254         print '    }'
 255         print '}'
 256         print
 257
 258         print 'static const char *'
 259         print 'enum_string(GLenum pname)'
 260         print '{'
 261         print '    const char *s = _enum_string(pname);'
 262         print '    if (s) {'
 263         print '        return s;'
 264         print '    } else {'
 265         print '        static char buf[16];'
 266         print '        snprintf(buf, sizeof buf, "0x%04x", pname);'
 267         print '        return buf;'
 268         print '    }'
 269         print '}'
 270         print
 271
 272         print 'static inline void'
 273         print 'writeEnum(JSONWriter &json, GLenum pname)'
 274         print '{'
 275         print '    const char *s = _enum_string(pname);'
 276         print '    if (s) {'
 277         print '        json.writeString(s);'
 278         print '    } else {'
 279         print '        json.writeNumber(pname);'
 280         print '    }'
 281         print '}'
 282         print
 283
 284         # shaders
 285         print '''
 286 static void
 287 writeShader(JSONWriter &json, GLuint shader)
 288 {
 289     if (!shader) {
 290         return;
 291     }
 292
 293     GLint shader_type = 0;
 294     glGetShaderiv(shader, GL_SHADER_TYPE, &shader_type);
 295     if (!shader_type) {
 296         return;
 297     }
 298
 299     GLint source_length = 0;
 300     glGetShaderiv(shader, GL_SHADER_SOURCE_LENGTH, &source_length);
 301     if (!source_length) {
 302         return;
 303     }
 304
 305     GLchar *source = new GLchar[source_length];
 306     GLsizei length = 0;
 307     source[0] = 0;
 308     glGetShaderSource(shader, source_length, &length, source);
 309
 310     json.beginMember(enum_string(shader_type));
 311     json.writeString(source);
 312     json.endMember();
 313
 314     delete [] source;
 315 }
 316
 317 static inline void
 318 writeCurrentProgram(JSONWriter &json)
 319 {
 320     GLint program = 0;
 321     glGetIntegerv(GL_CURRENT_PROGRAM, &program);
 322     if (!program) {
 323         return;
 324     }
 325
 326     GLint attached_shaders = 0;
 327     glGetProgramiv(program, GL_ATTACHED_SHADERS, &attached_shaders);
 328     if (!attached_shaders) {
 329         return;
 330     }
 331
 332     GLuint *shaders = new GLuint[attached_shaders];
 333     GLsizei count = 0;
 334     glGetAttachedShaders(program, attached_shaders, &count, shaders);
 335     for (GLsizei i = 0; i < count; ++ i) {
 336        writeShader(json, shaders[i]);
 337     }
 338     delete [] shaders;
 339 }
 340
 341 static inline void
 342 writeArbProgram(JSONWriter &json, GLenum target)
 343 {
 344     if (!glIsEnabled(target)) {
 345         return;
 346     }
 347
 348     GLint program_length = 0;
 349     glGetProgramivARB(target, GL_PROGRAM_LENGTH_ARB, &program_length);
 350     if (!program_length) {
 351         return;
 352     }
 353
 354     GLchar *source = new GLchar[program_length + 1];
 355     source[0] = 0;
 356     glGetProgramStringARB(target, GL_PROGRAM_STRING_ARB, source);
 357     source[program_length] = 0;
 358
 359     json.beginMember(enum_string(target));
 360     json.writeString(source);
 361     json.endMember();
 362
 363     delete [] source;
 364 }
 365 '''
 366
 367         # texture image
 368         print '''
 369 static inline void
 370 writeTextureImage(JSONWriter &json, GLenum target, GLint level)
 371 {
 372     GLint width, height = 1, depth = 1;
 373
 374     width = 0;
 375     glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);
 376
 377     if (target != GL_TEXTURE_1D) {
 378         height = 0;
 379         glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);
 380         if (target == GL_TEXTURE_3D) {
 381             depth = 0;
 382             glGetTexLevelParameteriv(target, level, GL_TEXTURE_DEPTH, &depth);
 383         }
 384     }
 385
 386     if (width <= 0 || height <= 0 || depth <= 0) {
 387         return;
 388     } else {
 389         char label[512];
 390
 391         GLint active_texture = GL_TEXTURE0;
 392         glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);
 393         snprintf(label, sizeof label, "%s, %s, level = %i", _enum_string(active_texture), _enum_string(target), level);
 394
 395         json.beginMember(label);
 396
 397         json.beginObject();
 398
 399         // Tell the GUI this is no ordinary object, but an image
 400         json.writeStringMember("__class__", "image");
 401
 402         json.writeNumberMember("__width__", width);
 403         json.writeNumberMember("__height__", height);
 404         json.writeNumberMember("__depth__", depth);
 405
 406         // Hardcoded for now, but we could chose types more adequate to the
 407         // texture internal format
 408         json.writeStringMember("__type__", "uint8");
 409         json.writeBoolMember("__normalized__", true);
 410         json.writeNumberMember("__channels__", 4);
 411
 412         GLubyte *pixels = new GLubyte[depth*width*height*4];
 413
 414         glGetTexImage(target, level, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 415
 416         json.beginMember("__data__");
 417         char *pngBuffer;
 418         int pngBufferSize;
 419         Image::writePixelsToBuffer(pixels, width, height, 4, false, &pngBuffer, &pngBufferSize);
 420         json.writeBase64(pngBuffer, pngBufferSize);
 421         free(pngBuffer);
 422         json.endMember(); // __data__
 423
 424         delete [] pixels;
 425         json.endObject();
 426     }
 427 }
 428
 429 static inline void
 430 writeDrawBufferImage(JSONWriter &json, GLenum format)
 431 {
 432     GLint width  = glretrace::window_width;
 433     GLint height = glretrace::window_height;
 434
 435     GLint channels = __gl_format_channels(format);
 436
 437     if (!width || !height) {
 438         json.writeNull();
 439     } else {
 440         json.beginObject();
 441
 442         // Tell the GUI this is no ordinary object, but an image
 443         json.writeStringMember("__class__", "image");
 444
 445         json.writeNumberMember("__width__", width);
 446         json.writeNumberMember("__height__", height);
 447         json.writeNumberMember("__depth__", 1);
 448
 449         // Hardcoded for now, but we could chose types more adequate to the
 450         // texture internal format
 451         json.writeStringMember("__type__", "uint8");
 452         json.writeBoolMember("__normalized__", true);
 453         json.writeNumberMember("__channels__", channels);
 454
 455         GLubyte *pixels = new GLubyte[width*height*channels];
 456
 457         GLint drawbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;
 458         GLint readbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;
 459         glGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);
 460         glGetIntegerv(GL_READ_BUFFER, &readbuffer);
 461         glReadBuffer(drawbuffer);
 462
 463         glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
 464         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 465
 466         glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, pixels);
 467
 468         glPopClientAttrib();
 469         glReadBuffer(readbuffer);
 470
 471         json.beginMember("__data__");
 472         char *pngBuffer;
 473         int pngBufferSize;
 474         Image::writePixelsToBuffer(pixels, width, height, channels, false, &pngBuffer, &pngBufferSize);
 475         //std::cerr <<" Before = "<<(width * height * channels * sizeof *pixels)
 476         //          <<", after = "<<pngBufferSize << ", ratio = " << double(width * height * channels * sizeof *pixels)/pngBufferSize;
 477         json.writeBase64(pngBuffer, pngBufferSize);
 478         free(pngBuffer);
 479         json.endMember(); // __data__
 480
 481         delete [] pixels;
 482         json.endObject();
 483     }
 484 }
 485
 486 static inline GLuint
 487 downsampledFramebuffer(GLuint oldFbo, GLint drawbuffer,
 488                        GLint colorRb, GLint depthRb, GLint stencilRb,
 489                        GLuint *rbs, GLint *numRbs)
 490 {
 491     GLuint fbo;
 492     GLint format;
 493     GLint w, h;
 494
 495     *numRbs = 0;
 496
 497     glGenFramebuffers(1, &fbo);
 498     glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 499
 500     glBindRenderbuffer(GL_RENDERBUFFER, colorRb);
 501     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 502                                  GL_RENDERBUFFER_WIDTH, &w);
 503     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 504                                  GL_RENDERBUFFER_HEIGHT, &h);
 505     glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 506                                  GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 507
 508     glGenRenderbuffers(1, &rbs[*numRbs]);
 509     glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 510     glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 511     glFramebufferRenderbuffer(GL_FRAMEBUFFER, drawbuffer,
 512                               GL_RENDERBUFFER, rbs[*numRbs]);
 513
 514     glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 515     glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 516     glDrawBuffer(drawbuffer);
 517     glReadBuffer(drawbuffer);
 518     glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 519                       GL_COLOR_BUFFER_BIT, GL_NEAREST);
 520     glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 521     ++*numRbs;
 522
 523     if (stencilRb == depthRb && stencilRb) {
 524         //combined depth and stencil buffer
 525         glBindRenderbuffer(GL_RENDERBUFFER, depthRb);
 526         glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 527                                      GL_RENDERBUFFER_WIDTH, &w);
 528         glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 529                                      GL_RENDERBUFFER_HEIGHT, &h);
 530         glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 531                                      GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 532
 533         glGenRenderbuffers(1, &rbs[*numRbs]);
 534         glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 535         glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 536         glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
 537                                   GL_RENDERBUFFER, rbs[*numRbs]);
 538         glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 539         glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 540         glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 541                           GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT, GL_NEAREST);
 542         glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 543         ++*numRbs;
 544     } else {
 545         if (depthRb) {
 546             glBindRenderbuffer(GL_RENDERBUFFER, depthRb);
 547             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 548                                          GL_RENDERBUFFER_WIDTH, &w);
 549             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 550                                          GL_RENDERBUFFER_HEIGHT, &h);
 551             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 552                                          GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 553
 554             glGenRenderbuffers(1, &rbs[*numRbs]);
 555             glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 556             glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 557             glFramebufferRenderbuffer(GL_FRAMEBUFFER,
 558                                       GL_DEPTH_ATTACHMENT,
 559                                       GL_RENDERBUFFER, rbs[*numRbs]);
 560             glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 561             glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 562             glDrawBuffer(GL_DEPTH_ATTACHMENT);
 563             glReadBuffer(GL_DEPTH_ATTACHMENT);
 564             glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 565                               GL_DEPTH_BUFFER_BIT, GL_NEAREST);
 566             ++*numRbs;
 567         }
 568         if (stencilRb) {
 569             glBindRenderbuffer(GL_RENDERBUFFER, stencilRb);
 570             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 571                                          GL_RENDERBUFFER_WIDTH, &w);
 572             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 573                                          GL_RENDERBUFFER_HEIGHT, &h);
 574             glGetRenderbufferParameteriv(GL_RENDERBUFFER,
 575                                      GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
 576
 577             glGenRenderbuffers(1, &rbs[*numRbs]);
 578             glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
 579             glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
 580             glFramebufferRenderbuffer(GL_FRAMEBUFFER,
 581                                       GL_STENCIL_ATTACHMENT,
 582                                       GL_RENDERBUFFER, rbs[*numRbs]);
 583             glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
 584             glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
 585             glDrawBuffer(GL_STENCIL_ATTACHMENT);
 586             glReadBuffer(GL_STENCIL_ATTACHMENT);
 587             glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
 588                               GL_STENCIL_BUFFER_BIT, GL_NEAREST);
 589             ++*numRbs;
 590         }
 591     }
 592
 593     return fbo;
 594 }
 595
 596 static void
 597 writeDrawBuffers(JSONWriter &json, GLboolean writeDepth, GLboolean writeStencil)
 598 {
 599     json.beginMember("GL_RGBA");
 600     writeDrawBufferImage(json, GL_RGBA);
 601     json.endMember();
 602
 603     if (writeDepth) {
 604         json.beginMember("GL_DEPTH_COMPONENT");
 605         writeDrawBufferImage(json, GL_DEPTH_COMPONENT);
 606         json.endMember();
 607     }
 608
 609     if (writeStencil) {
 610         json.beginMember("GL_STENCIL_INDEX");
 611         writeDrawBufferImage(json, GL_STENCIL_INDEX);
 612         json.endMember();
 613     }
 614 }
 615
 616 '''
 617
 618         # textures
 619         print 'static inline void'
 620         print 'writeTexture(JSONWriter &json, GLenum target, GLenum binding)'
 621         print '{'
 622         print '    GLint texture_binding = 0;'
 623         print '    glGetIntegerv(binding, &texture_binding);'
 624         print '    if (!glIsEnabled(target) && !texture_binding) {'
 625         print '        return;'
 626         print '    }'
 627         print
 628         print '    GLint level = 0;'
 629         print '    do {'
 630         print '        GLint width = 0, height = 0;'
 631         print '        glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);'
 632         print '        glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);'
 633         print '        if (!width || !height) {'
 634         print '            break;'
 635         print '        }'
 636         print
 637         print '        if (target == GL_TEXTURE_CUBE_MAP) {'
 638         print '            for (int face = 0; face < 6; ++face) {'
 639         print '                writeTextureImage(json, GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, level);'
 640         print '            }'
 641         print '        } else {'
 642         print '            writeTextureImage(json, target, level);'
 643         print '        }'
 644         print
 645         print '        ++level;'
 646         print '    } while(true);'
 647         print '}'
 648         print
 649
 650         print 'void glretrace::state_dump(std::ostream &os)'
 651         print '{'
 652         print '    JSONWriter json(os);'
 653         self.dump_parameters()
 654         self.dump_current_program()
 655         self.dump_textures()
 656         self.dump_framebuffer()
 657         print '}'
 658         print
 659
 660     def dump_parameters(self):
 661         print '    json.beginMember("parameters");'
 662         print '    json.beginObject();'
 663
 664         self.dump_atoms(glGet)
 665
 666         self.dump_material_params()
 667         self.dump_light_params()
 668         self.dump_vertex_attribs()
 669         self.dump_texenv_params()
 670         self.dump_program_params()
 671         self.dump_texture_parameters()
 672
 673         print '    json.endObject();'
 674         print '    json.endMember(); // parameters'
 675         print
 676
 677     def dump_material_params(self):
 678         for face in ['GL_FRONT', 'GL_BACK']:
 679             print '    json.beginMember("%s");' % face
 680             print '    json.beginObject();'
 681             self.dump_atoms(glGetMaterial, face)
 682             print '    json.endObject();'
 683         print
 684
 685     def dump_light_params(self):
 686         print '    GLint max_lights = 0;'
 687         print '    __glGetIntegerv(GL_MAX_LIGHTS, &max_lights);'
 688         print '    for (GLint index = 0; index < max_lights; ++index) {'
 689         print '        GLenum light = GL_LIGHT0 + index;'
 690         print '        if (glIsEnabled(light)) {'
 691         print '            char name[32];'
 692         print '            snprintf(name, sizeof name, "GL_LIGHT%i", index);'
 693         print '            json.beginMember(name);'
 694         print '            json.beginObject();'
 695         self.dump_atoms(glGetLight, '    GL_LIGHT0 + index')
 696         print '            json.endObject();'
 697         print '            json.endMember(); // GL_LIGHTi'
 698         print '        }'
 699         print '    }'
 700         print
 701
 702     def dump_texenv_params(self):
 703         for target in ['GL_TEXTURE_ENV', 'GL_TEXTURE_FILTER_CONTROL', 'GL_POINT_SPRITE']:
 704             if target != 'GL_TEXTURE_FILTER_CONTROL':
 705                 print '    if (glIsEnabled(%s)) {' % target
 706             else:
 707                 print '    {'
 708             print '        json.beginMember("%s");' % target
 709             print '        json.beginObject();'
 710             self.dump_atoms(glGetTexEnv, target)
 711             print '        json.endObject();'
 712             print '    }'
 713
 714     def dump_vertex_attribs(self):
 715         print '    GLint max_vertex_attribs = 0;'
 716         print '    __glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_vertex_attribs);'
 717         print '    for (GLint index = 0; index < max_vertex_attribs; ++index) {'
 718         print '        char name[32];'
 719         print '        snprintf(name, sizeof name, "GL_VERTEX_ATTRIB_ARRAY%i", index);'
 720         print '        json.beginMember(name);'
 721         print '        json.beginObject();'
 722         self.dump_atoms(glGetVertexAttrib, 'index')
 723         print '        json.endObject();'
 724         print '        json.endMember(); // GL_VERTEX_ATTRIB_ARRAYi'
 725         print '    }'
 726         print
 727
 728     program_targets = [
 729         'GL_FRAGMENT_PROGRAM_ARB',
 730         'GL_VERTEX_PROGRAM_ARB',
 731     ]
 732
 733     def dump_program_params(self):
 734         for target in self.program_targets:
 735             print '    if (glIsEnabled(%s)) {' % target
 736             print '        json.beginMember("%s");' % target
 737             print '        json.beginObject();'
 738             self.dump_atoms(glGetProgramARB, target)
 739             print '        json.endObject();'
 740             print '    }'
 741
 742     def dump_texture_parameters(self):
 743         print '    {'
 744         print '        GLint active_texture = GL_TEXTURE0;'
 745         print '        glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);'
 746         print '        GLint max_texture_coords = 0;'
 747         print '        glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_texture_coords);'
 748         print '        GLint max_combined_texture_image_units = 0;'
 749         print '        glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_combined_texture_image_units);'
 750         print '        GLint max_units = std::max(max_combined_texture_image_units, max_texture_coords);'
 751         print '        for (GLint unit = 0; unit < max_units; ++unit) {'
 752         print '            char name[32];'
 753         print '            snprintf(name, sizeof name, "GL_TEXTURE%i", unit);'
 754         print '            json.beginMember(name);'
 755         print '            glActiveTexture(GL_TEXTURE0 + unit);'
 756         print '            json.beginObject();'
 757         print '            GLint texture;'
 758         print
 759         for target, binding in texture_targets:
 760             print '            // %s' % target
 761             print '            texture = 0;'
 762             print '            glGetIntegerv(%s, &texture);' % binding
 763             print '            if (glIsEnabled(%s) || texture) {' % target
 764             print '                json.beginMember("%s");' % target
 765             print '                json.beginObject();'
 766             self.dump_atoms(glGetTexParameter, target)
 767             # We only dump the first level parameters
 768             self.dump_atoms(glGetTexLevelParameter, target, "0")
 769             print '                json.endObject();'
 770             print '                json.endMember(); // %s' % target
 771             print '            }'
 772             print
 773         print '            json.endObject();'
 774         print '            json.endMember(); // GL_TEXTUREi'
 775         print '        }'
 776         print '        glActiveTexture(active_texture);'
 777         print '    }'
 778         print
 779
 780     def dump_current_program(self):
 781         print '    json.beginMember("shaders");'
 782         print '    json.beginObject();'
 783         print '    writeCurrentProgram(json);'
 784         for target in self.program_targets:
 785             print '    writeArbProgram(json, %s);' % target
 786         print '    json.endObject();'
 787         print '    json.endMember(); //shaders'
 788         print
 789
 790     def dump_textures(self):
 791         print '    {'
 792         print '        json.beginMember("textures");'
 793         print '        json.beginObject();'
 794         print '        GLint active_texture = GL_TEXTURE0;'
 795         print '        glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);'
 796         print '        GLint max_texture_coords = 0;'
 797         print '        glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_texture_coords);'
 798         print '        GLint max_combined_texture_image_units = 0;'
 799         print '        glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_combined_texture_image_units);'
 800         print '        GLint max_units = std::max(max_combined_texture_image_units, max_texture_coords);'
 801         print '        for (GLint unit = 0; unit < max_units; ++unit) {'
 802         print '            GLenum texture = GL_TEXTURE0 + unit;'
 803         print '            glActiveTexture(texture);'
 804         for target, binding in texture_targets:
 805             print '            writeTexture(json, %s, %s);' % (target, binding)
 806         print '        }'
 807         print '        glActiveTexture(active_texture);'
 808         print '        json.endObject();'
 809         print '        json.endMember(); // textures'
 810         print '    }'
 811         print
 812
 813     def dump_framebuffer(self):
 814         print '    json.beginMember("framebuffer");'
 815         print '    json.beginObject();'
 816         # TODO: Handle real FBOs
 817         print
 818         print '    GLint boundDrawFbo = 0, boundReadFbo = 0;'
 819         print '    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &boundDrawFbo);'
 820         print '    glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &boundReadFbo);'
 821         print '    if (!boundDrawFbo) {'
 822         print '        GLint depth_bits = 0;'
 823         print '        glGetIntegerv(GL_DEPTH_BITS, &depth_bits);'
 824         print '        GLint stencil_bits = 0;'
 825         print '        glGetIntegerv(GL_STENCIL_BITS, &stencil_bits);'
 826         print '        writeDrawBuffers(json, depth_bits, stencil_bits);'
 827         print '    } else {'
 828         print '        GLint colorRb, stencilRb, depthRb;'
 829         print '        GLint boundRb;'
 830         print '        glGetIntegerv(GL_RENDERBUFFER_BINDING, &boundRb);'
 831         print '        GLint drawbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;'
 832         print '        glGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);'
 833         print
 834         print '        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
 835         print '                                              drawbuffer,'
 836         print '                                              GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
 837         print '                                              &colorRb);'
 838         print '        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
 839         print '                                              GL_DEPTH_ATTACHMENT,'
 840         print '                                              GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
 841         print '                                              &depthRb);'
 842         print '        glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
 843         print '                                              GL_STENCIL_ATTACHMENT,'
 844         print '                                              GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
 845         print '                                              &stencilRb);'
 846         print
 847         print '        GLint colorSamples, depthSamples, stencilSamples;'
 848         print '        GLuint rbs[3];'
 849         print '        GLint numRbs = 0;'
 850         print '        GLuint fboCopy = 0;'
 851         print '        glBindRenderbuffer(GL_RENDERBUFFER, colorRb);'
 852         print '        glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
 853         print '                                     GL_RENDERBUFFER_SAMPLES, &colorSamples);'
 854         print '        glBindRenderbuffer(GL_RENDERBUFFER, depthRb);'
 855         print '        glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
 856         print '                                     GL_RENDERBUFFER_SAMPLES, &depthSamples);'
 857         print '        glBindRenderbuffer(GL_RENDERBUFFER, stencilRb);'
 858         print '        glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
 859         print '                                     GL_RENDERBUFFER_SAMPLES, &stencilSamples);'
 860         print '        glBindRenderbuffer(GL_RENDERBUFFER, boundRb);'
 861         print
 862         print '        if (colorSamples || depthSamples || stencilSamples) {'
 863         print '            //glReadPixels doesnt support multisampled buffers so we need'
 864         print '            // to blit the fbo to a temporary one'
 865         print '            fboCopy = downsampledFramebuffer(boundDrawFbo, drawbuffer,'
 866         print '                                             colorRb, depthRb, stencilRb,'
 867         print '                                             rbs, &numRbs);'
 868         print '        }'
 869         print '        glDrawBuffer(drawbuffer);'
 870         print '        glReadBuffer(drawbuffer);'
 871         print
 872         print '        writeDrawBuffers(json, depthRb, stencilRb);'
 873         print
 874         print '        if (fboCopy) {'
 875         print '            glBindFramebuffer(GL_FRAMEBUFFER, boundDrawFbo);'
 876         print '            glBindFramebuffer(GL_READ_FRAMEBUFFER, boundReadFbo);'
 877         print '            glBindFramebuffer(GL_DRAW_FRAMEBUFFER, boundDrawFbo);'
 878         print '            glBindRenderbuffer(GL_RENDERBUFFER_BINDING, boundRb);'
 879         print '            glDeleteRenderbuffers(numRbs, rbs);'
 880         print '            glDeleteFramebuffers(1, &fboCopy);'
 881         print '        }'
 882         print '    }'
 883         print
 884         print '    json.endObject();'
 885         print '    json.endMember(); // framebuffer'
 886         pass
 887
 888     def dump_atoms(self, getter, *args):
 889         for function, type, count, name in parameters:
 890             inflection = getter.inflector.radical + getter.suffix
 891             if inflection not in function.split(','):
 892                 continue
 893             if type is X:
 894                 continue
 895             print '        // %s' % name
 896             print '        {'
 897             type, value = getter(*(args + (name,)))
 898             print '            if (glGetError() != GL_NO_ERROR) {'
 899             #print '                std::cerr << "warning: %s(%s) failed\\n";' % (inflection, name)
 900             print '            } else {'
 901             print '                json.beginMember("%s");' % name
 902             JsonWriter().visit(type, value)
 903             print '                json.endMember();'
 904             print '            }'
 905             print '        }'
 906             print
 907
 908
 909 if __name__ == '__main__':
 910     StateDumper().dump()