1 ##########################################################################
3 # Copyright 2011 Jose Fonseca
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:
13 # The above copyright notice and this permission notice shall be included in
14 # all copies or substantial portions of the Software.
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
24 ##########################################################################/
27 '''Generate code to dump most GL state into JSON.'''
33 from glparams import *
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')
46 '''Objects that describes how to inflect.'''
54 def __init__(self, radical, inflections, suffix = ''):
55 self.radical = radical
56 self.inflections = inflections
59 def reduced_type(self, type):
60 if type in self.inflections:
62 if type in self.reduced_types:
63 return self.reduced_type(self.reduced_types[type])
64 raise NotImplementedError
66 def inflect(self, type):
67 return self.radical + self.inflection(type) + self.suffix
69 def inflection(self, type):
70 type = self.reduced_type(type)
71 assert type in self.inflections
72 return self.inflections[type]
75 return self.radical + self.suffix
78 class StateGetter(Visitor):
79 '''Type visitor that is able to extract the state via one of the glGet*
82 It will declare any temporary variable
85 def __init__(self, radical, inflections, suffix=''):
86 self.inflector = GetInflector(radical, inflections)
89 def __call__(self, *args):
92 for function, type, count, name in parameters:
97 type = Array(type, str(count))
99 return type, self.visit(type, args)
101 raise NotImplementedError
103 def temp_name(self, args):
104 '''Return the name of a temporary variable to hold the state.'''
107 return pname[3:].lower()
109 def visit_const(self, const, args):
110 return self.visit(const.type, args)
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)
120 print ' %s %s = %s(%s);' % (elem_type, temp_name, inflection + self.suffix, ', '.join(args))
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))
130 def visit_alias(self, alias, args):
131 return self.visit_scalar(alias, args)
133 def visit_enum(self, enum, args):
134 return self.visit(GLint, args)
136 def visit_bitmask(self, bitmask, args):
137 return self.visit(GLint, args)
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)
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)
160 glGet = StateGetter('glGet', {
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 glGetShader = StateGetter('glGetShaderiv', {I: 'iv'})
176 glGetProgram = StateGetter('glGetProgram', {I: 'iv'})
177 glGetProgramARB = StateGetter('glGetProgram', {I: 'iv', F: 'fv', S: 'Stringv'}, 'ARB')
180 class JsonWriter(Visitor):
181 '''Type visitor that will dump a value of the specified type through the
184 It expects a previously declared JSONWriter instance named "json".'''
186 def visit_literal(self, literal, instance):
187 if literal.format == 'Bool':
188 print ' json.writeBool(%s);' % instance
189 elif literal.format in ('SInt', 'Uint', 'Float', 'Double'):
190 print ' json.writeNumber(%s);' % instance
192 raise NotImplementedError
194 def visit_string(self, string, instance):
195 assert string.length is None
196 print ' json.writeString((const char *)%s);' % instance
198 def visit_enum(self, enum, instance):
199 if enum.expr == 'GLenum':
200 print ' writeEnum(json, %s);' % instance
202 print ' json.writeNumber(%s);' % instance
204 def visit_bitmask(self, bitmask, instance):
205 raise NotImplementedError
207 def visit_alias(self, alias, instance):
208 self.visit(alias.type, instance)
210 def visit_opaque(self, opaque, instance):
211 print ' json.writeNumber((size_t)%s);' % instance
215 def visit_array(self, array, instance):
216 index = '__i%u' % JsonWriter.__index
217 JsonWriter.__index += 1
218 print ' json.beginArray();'
219 print ' for (unsigned %s = 0; %s < %s; ++%s) {' % (index, index, array.length, index)
220 self.visit(array.type, '%s[%s]' % (instance, index))
222 print ' json.endArray();'
227 '''Class to generate code to dump all GL state in JSON format via
234 print '#include <string.h>'
235 print '#include <iostream>'
236 print '#include <algorithm>'
238 print '#include "image.hpp"'
239 print '#include "json.hpp"'
240 print '#include "glimports.hpp"'
241 print '#include "glproc.hpp"'
242 print '#include "glsize.hpp"'
243 print '#include "glretrace.hpp"'
246 print 'static const char *'
247 print '_enum_string(GLenum pname)'
249 print ' switch(pname) {'
250 for name in GLenum.values:
251 print ' case %s:' % name
252 print ' return "%s";' % name
254 print ' return NULL;'
259 print 'static const char *'
260 print 'enum_string(GLenum pname)'
262 print ' const char *s = _enum_string(pname);'
266 print ' static char buf[16];'
267 print ' snprintf(buf, sizeof buf, "0x%04x", pname);'
273 print 'static inline void'
274 print 'writeEnum(JSONWriter &json, GLenum pname)'
276 print ' const char *s = _enum_string(pname);'
278 print ' json.writeString(s);'
280 print ' json.writeNumber(pname);'
288 writeShader(JSONWriter &json, GLuint shader)
294 GLint shader_type = 0;
295 glGetShaderiv(shader, GL_SHADER_TYPE, &shader_type);
300 GLint source_length = 0;
301 glGetShaderiv(shader, GL_SHADER_SOURCE_LENGTH, &source_length);
302 if (!source_length) {
306 GLchar *source = new GLchar[source_length];
309 glGetShaderSource(shader, source_length, &length, source);
311 json.beginMember(enum_string(shader_type));
312 json.writeString(source);
319 writeCurrentProgram(JSONWriter &json)
322 glGetIntegerv(GL_CURRENT_PROGRAM, &program);
327 GLint attached_shaders = 0;
328 glGetProgramiv(program, GL_ATTACHED_SHADERS, &attached_shaders);
329 if (!attached_shaders) {
333 GLuint *shaders = new GLuint[attached_shaders];
335 glGetAttachedShaders(program, attached_shaders, &count, shaders);
336 for (GLsizei i = 0; i < count; ++ i) {
337 writeShader(json, shaders[i]);
343 writeArbProgram(JSONWriter &json, GLenum target)
345 if (!glIsEnabled(target)) {
349 GLint program_length = 0;
350 glGetProgramivARB(target, GL_PROGRAM_LENGTH_ARB, &program_length);
351 if (!program_length) {
355 GLchar *source = new GLchar[program_length + 1];
357 glGetProgramStringARB(target, GL_PROGRAM_STRING_ARB, source);
358 source[program_length] = 0;
360 json.beginMember(enum_string(target));
361 json.writeString(source);
371 writeTextureImage(JSONWriter &json, GLenum target, GLint level)
373 GLint width, height = 1, depth = 1;
376 glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);
378 if (target != GL_TEXTURE_1D) {
380 glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);
381 if (target == GL_TEXTURE_3D) {
383 glGetTexLevelParameteriv(target, level, GL_TEXTURE_DEPTH, &depth);
387 if (width <= 0 || height <= 0 || depth <= 0) {
392 GLint active_texture = GL_TEXTURE0;
393 glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);
394 snprintf(label, sizeof label, "%s, %s, level = %i", _enum_string(active_texture), _enum_string(target), level);
396 json.beginMember(label);
400 // Tell the GUI this is no ordinary object, but an image
401 json.writeStringMember("__class__", "image");
403 json.writeNumberMember("__width__", width);
404 json.writeNumberMember("__height__", height);
405 json.writeNumberMember("__depth__", depth);
407 // Hardcoded for now, but we could chose types more adequate to the
408 // texture internal format
409 json.writeStringMember("__type__", "uint8");
410 json.writeBoolMember("__normalized__", true);
411 json.writeNumberMember("__channels__", 4);
413 GLubyte *pixels = new GLubyte[depth*width*height*4];
415 glGetTexImage(target, level, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
417 json.beginMember("__data__");
420 Image::writePixelsToBuffer(pixels, width, height, 4, false, &pngBuffer, &pngBufferSize);
421 json.writeBase64(pngBuffer, pngBufferSize);
423 json.endMember(); // __data__
431 writeDrawBufferImage(JSONWriter &json, GLenum format)
433 GLint channels = __gl_format_channels(format);
435 if (!glretrace::drawable) {
438 GLint width = glretrace::drawable->width;
439 GLint height = glretrace::drawable->height;
443 // Tell the GUI this is no ordinary object, but an image
444 json.writeStringMember("__class__", "image");
446 json.writeNumberMember("__width__", width);
447 json.writeNumberMember("__height__", height);
448 json.writeNumberMember("__depth__", 1);
450 // Hardcoded for now, but we could chose types more adequate to the
451 // texture internal format
452 json.writeStringMember("__type__", "uint8");
453 json.writeBoolMember("__normalized__", true);
454 json.writeNumberMember("__channels__", channels);
456 GLubyte *pixels = new GLubyte[width*height*channels];
458 GLint drawbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;
459 GLint readbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;
460 glGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);
461 glGetIntegerv(GL_READ_BUFFER, &readbuffer);
462 glReadBuffer(drawbuffer);
464 glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
465 glPixelStorei(GL_PACK_ALIGNMENT, 1);
467 glReadPixels(0, 0, width, height, format, GL_UNSIGNED_BYTE, pixels);
470 glReadBuffer(readbuffer);
472 json.beginMember("__data__");
475 Image::writePixelsToBuffer(pixels, width, height, channels, false, &pngBuffer, &pngBufferSize);
476 //std::cerr <<" Before = "<<(width * height * channels * sizeof *pixels)
477 // <<", after = "<<pngBufferSize << ", ratio = " << double(width * height * channels * sizeof *pixels)/pngBufferSize;
478 json.writeBase64(pngBuffer, pngBufferSize);
480 json.endMember(); // __data__
488 downsampledFramebuffer(GLuint oldFbo, GLint drawbuffer,
489 GLint colorRb, GLint depthRb, GLint stencilRb,
490 GLuint *rbs, GLint *numRbs)
498 glGenFramebuffers(1, &fbo);
499 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
501 glBindRenderbuffer(GL_RENDERBUFFER, colorRb);
502 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
503 GL_RENDERBUFFER_WIDTH, &w);
504 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
505 GL_RENDERBUFFER_HEIGHT, &h);
506 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
507 GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
509 glGenRenderbuffers(1, &rbs[*numRbs]);
510 glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
511 glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
512 glFramebufferRenderbuffer(GL_FRAMEBUFFER, drawbuffer,
513 GL_RENDERBUFFER, rbs[*numRbs]);
515 glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
516 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
517 glDrawBuffer(drawbuffer);
518 glReadBuffer(drawbuffer);
519 glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
520 GL_COLOR_BUFFER_BIT, GL_NEAREST);
521 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
524 if (stencilRb == depthRb && stencilRb) {
525 //combined depth and stencil buffer
526 glBindRenderbuffer(GL_RENDERBUFFER, depthRb);
527 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
528 GL_RENDERBUFFER_WIDTH, &w);
529 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
530 GL_RENDERBUFFER_HEIGHT, &h);
531 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
532 GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
534 glGenRenderbuffers(1, &rbs[*numRbs]);
535 glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
536 glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
537 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
538 GL_RENDERBUFFER, rbs[*numRbs]);
539 glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
540 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
541 glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
542 GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT, GL_NEAREST);
543 glBindFramebuffer(GL_FRAMEBUFFER, fbo);
547 glBindRenderbuffer(GL_RENDERBUFFER, depthRb);
548 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
549 GL_RENDERBUFFER_WIDTH, &w);
550 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
551 GL_RENDERBUFFER_HEIGHT, &h);
552 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
553 GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
555 glGenRenderbuffers(1, &rbs[*numRbs]);
556 glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
557 glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
558 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
560 GL_RENDERBUFFER, rbs[*numRbs]);
561 glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
562 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
563 glDrawBuffer(GL_DEPTH_ATTACHMENT);
564 glReadBuffer(GL_DEPTH_ATTACHMENT);
565 glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
566 GL_DEPTH_BUFFER_BIT, GL_NEAREST);
570 glBindRenderbuffer(GL_RENDERBUFFER, stencilRb);
571 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
572 GL_RENDERBUFFER_WIDTH, &w);
573 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
574 GL_RENDERBUFFER_HEIGHT, &h);
575 glGetRenderbufferParameteriv(GL_RENDERBUFFER,
576 GL_RENDERBUFFER_INTERNAL_FORMAT, &format);
578 glGenRenderbuffers(1, &rbs[*numRbs]);
579 glBindRenderbuffer(GL_RENDERBUFFER, rbs[*numRbs]);
580 glRenderbufferStorage(GL_RENDERBUFFER, format, w, h);
581 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
582 GL_STENCIL_ATTACHMENT,
583 GL_RENDERBUFFER, rbs[*numRbs]);
584 glBindFramebuffer(GL_READ_FRAMEBUFFER, oldFbo);
585 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
586 glDrawBuffer(GL_STENCIL_ATTACHMENT);
587 glReadBuffer(GL_STENCIL_ATTACHMENT);
588 glBlitFramebuffer(0, 0, w, h, 0, 0, w, h,
589 GL_STENCIL_BUFFER_BIT, GL_NEAREST);
598 writeDrawBuffers(JSONWriter &json, GLboolean writeDepth, GLboolean writeStencil)
600 json.beginMember("GL_RGBA");
601 writeDrawBufferImage(json, GL_RGBA);
605 json.beginMember("GL_DEPTH_COMPONENT");
606 writeDrawBufferImage(json, GL_DEPTH_COMPONENT);
611 json.beginMember("GL_STENCIL_INDEX");
612 writeDrawBufferImage(json, GL_STENCIL_INDEX);
620 print 'static inline void'
621 print 'writeTexture(JSONWriter &json, GLenum target, GLenum binding)'
623 print ' GLint texture_binding = 0;'
624 print ' glGetIntegerv(binding, &texture_binding);'
625 print ' if (!glIsEnabled(target) && !texture_binding) {'
629 print ' GLint level = 0;'
631 print ' GLint width = 0, height = 0;'
632 print ' glGetTexLevelParameteriv(target, level, GL_TEXTURE_WIDTH, &width);'
633 print ' glGetTexLevelParameteriv(target, level, GL_TEXTURE_HEIGHT, &height);'
634 print ' if (!width || !height) {'
638 print ' if (target == GL_TEXTURE_CUBE_MAP) {'
639 print ' for (int face = 0; face < 6; ++face) {'
640 print ' writeTextureImage(json, GL_TEXTURE_CUBE_MAP_POSITIVE_X + face, level);'
643 print ' writeTextureImage(json, target, level);'
647 print ' } while(true);'
651 print 'void glretrace::state_dump(std::ostream &os)'
653 print ' JSONWriter json(os);'
654 self.dump_parameters()
655 self.dump_current_program()
657 self.dump_framebuffer()
661 def dump_parameters(self):
662 print ' json.beginMember("parameters");'
663 print ' json.beginObject();'
665 self.dump_atoms(glGet)
667 self.dump_material_params()
668 self.dump_light_params()
669 self.dump_vertex_attribs()
670 self.dump_texenv_params()
671 self.dump_program_params()
672 self.dump_texture_parameters()
674 print ' json.endObject();'
675 print ' json.endMember(); // parameters'
678 def dump_material_params(self):
679 for face in ['GL_FRONT', 'GL_BACK']:
680 print ' json.beginMember("%s");' % face
681 print ' json.beginObject();'
682 self.dump_atoms(glGetMaterial, face)
683 print ' json.endObject();'
686 def dump_light_params(self):
687 print ' GLint max_lights = 0;'
688 print ' __glGetIntegerv(GL_MAX_LIGHTS, &max_lights);'
689 print ' for (GLint index = 0; index < max_lights; ++index) {'
690 print ' GLenum light = GL_LIGHT0 + index;'
691 print ' if (glIsEnabled(light)) {'
692 print ' char name[32];'
693 print ' snprintf(name, sizeof name, "GL_LIGHT%i", index);'
694 print ' json.beginMember(name);'
695 print ' json.beginObject();'
696 self.dump_atoms(glGetLight, ' GL_LIGHT0 + index')
697 print ' json.endObject();'
698 print ' json.endMember(); // GL_LIGHTi'
703 def dump_texenv_params(self):
704 for target in ['GL_TEXTURE_ENV', 'GL_TEXTURE_FILTER_CONTROL', 'GL_POINT_SPRITE']:
705 if target != 'GL_TEXTURE_FILTER_CONTROL':
706 print ' if (glIsEnabled(%s)) {' % target
709 print ' json.beginMember("%s");' % target
710 print ' json.beginObject();'
711 self.dump_atoms(glGetTexEnv, target)
712 print ' json.endObject();'
715 def dump_vertex_attribs(self):
716 print ' GLint max_vertex_attribs = 0;'
717 print ' __glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_vertex_attribs);'
718 print ' for (GLint index = 0; index < max_vertex_attribs; ++index) {'
719 print ' char name[32];'
720 print ' snprintf(name, sizeof name, "GL_VERTEX_ATTRIB_ARRAY%i", index);'
721 print ' json.beginMember(name);'
722 print ' json.beginObject();'
723 self.dump_atoms(glGetVertexAttrib, 'index')
724 print ' json.endObject();'
725 print ' json.endMember(); // GL_VERTEX_ATTRIB_ARRAYi'
730 'GL_FRAGMENT_PROGRAM_ARB',
731 'GL_VERTEX_PROGRAM_ARB',
734 def dump_program_params(self):
735 for target in self.program_targets:
736 print ' if (glIsEnabled(%s)) {' % target
737 print ' json.beginMember("%s");' % target
738 print ' json.beginObject();'
739 self.dump_atoms(glGetProgramARB, target)
740 print ' json.endObject();'
743 def dump_texture_parameters(self):
745 print ' GLint active_texture = GL_TEXTURE0;'
746 print ' glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);'
747 print ' GLint max_texture_coords = 0;'
748 print ' glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_texture_coords);'
749 print ' GLint max_combined_texture_image_units = 0;'
750 print ' glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_combined_texture_image_units);'
751 print ' GLint max_units = std::max(max_combined_texture_image_units, max_texture_coords);'
752 print ' for (GLint unit = 0; unit < max_units; ++unit) {'
753 print ' char name[32];'
754 print ' snprintf(name, sizeof name, "GL_TEXTURE%i", unit);'
755 print ' json.beginMember(name);'
756 print ' glActiveTexture(GL_TEXTURE0 + unit);'
757 print ' json.beginObject();'
758 print ' GLint texture;'
760 for target, binding in texture_targets:
761 print ' // %s' % target
762 print ' texture = 0;'
763 print ' glGetIntegerv(%s, &texture);' % binding
764 print ' if (glIsEnabled(%s) || texture) {' % target
765 print ' json.beginMember("%s");' % target
766 print ' json.beginObject();'
767 self.dump_atoms(glGetTexParameter, target)
768 # We only dump the first level parameters
769 self.dump_atoms(glGetTexLevelParameter, target, "0")
770 print ' json.endObject();'
771 print ' json.endMember(); // %s' % target
774 print ' json.endObject();'
775 print ' json.endMember(); // GL_TEXTUREi'
777 print ' glActiveTexture(active_texture);'
781 def dump_current_program(self):
782 print ' json.beginMember("shaders");'
783 print ' json.beginObject();'
784 print ' writeCurrentProgram(json);'
785 for target in self.program_targets:
786 print ' writeArbProgram(json, %s);' % target
787 print ' json.endObject();'
788 print ' json.endMember(); //shaders'
791 def dump_textures(self):
793 print ' json.beginMember("textures");'
794 print ' json.beginObject();'
795 print ' GLint active_texture = GL_TEXTURE0;'
796 print ' glGetIntegerv(GL_ACTIVE_TEXTURE, &active_texture);'
797 print ' GLint max_texture_coords = 0;'
798 print ' glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_texture_coords);'
799 print ' GLint max_combined_texture_image_units = 0;'
800 print ' glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_combined_texture_image_units);'
801 print ' GLint max_units = std::max(max_combined_texture_image_units, max_texture_coords);'
802 print ' for (GLint unit = 0; unit < max_units; ++unit) {'
803 print ' GLenum texture = GL_TEXTURE0 + unit;'
804 print ' glActiveTexture(texture);'
805 for target, binding in texture_targets:
806 print ' writeTexture(json, %s, %s);' % (target, binding)
808 print ' glActiveTexture(active_texture);'
809 print ' json.endObject();'
810 print ' json.endMember(); // textures'
814 def dump_framebuffer(self):
815 print ' json.beginMember("framebuffer");'
816 print ' json.beginObject();'
817 # TODO: Handle real FBOs
819 print ' GLint boundDrawFbo = 0, boundReadFbo = 0;'
820 print ' glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &boundDrawFbo);'
821 print ' glGetIntegerv(GL_READ_FRAMEBUFFER_BINDING, &boundReadFbo);'
822 print ' if (!boundDrawFbo) {'
823 print ' GLint depth_bits = 0;'
824 print ' glGetIntegerv(GL_DEPTH_BITS, &depth_bits);'
825 print ' GLint stencil_bits = 0;'
826 print ' glGetIntegerv(GL_STENCIL_BITS, &stencil_bits);'
827 print ' writeDrawBuffers(json, depth_bits, stencil_bits);'
829 print ' GLint colorRb, stencilRb, depthRb;'
830 print ' GLint boundRb;'
831 print ' glGetIntegerv(GL_RENDERBUFFER_BINDING, &boundRb);'
832 print ' GLint drawbuffer = glretrace::double_buffer ? GL_BACK : GL_FRONT;'
833 print ' glGetIntegerv(GL_DRAW_BUFFER, &drawbuffer);'
835 print ' glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
837 print ' GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
839 print ' glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
840 print ' GL_DEPTH_ATTACHMENT,'
841 print ' GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
843 print ' glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER,'
844 print ' GL_STENCIL_ATTACHMENT,'
845 print ' GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,'
846 print ' &stencilRb);'
848 print ' GLint colorSamples, depthSamples, stencilSamples;'
849 print ' GLuint rbs[3];'
850 print ' GLint numRbs = 0;'
851 print ' GLuint fboCopy = 0;'
852 print ' glBindRenderbuffer(GL_RENDERBUFFER, colorRb);'
853 print ' glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
854 print ' GL_RENDERBUFFER_SAMPLES, &colorSamples);'
855 print ' glBindRenderbuffer(GL_RENDERBUFFER, depthRb);'
856 print ' glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
857 print ' GL_RENDERBUFFER_SAMPLES, &depthSamples);'
858 print ' glBindRenderbuffer(GL_RENDERBUFFER, stencilRb);'
859 print ' glGetRenderbufferParameteriv(GL_RENDERBUFFER,'
860 print ' GL_RENDERBUFFER_SAMPLES, &stencilSamples);'
861 print ' glBindRenderbuffer(GL_RENDERBUFFER, boundRb);'
863 print ' if (colorSamples || depthSamples || stencilSamples) {'
864 print ' //glReadPixels doesnt support multisampled buffers so we need'
865 print ' // to blit the fbo to a temporary one'
866 print ' fboCopy = downsampledFramebuffer(boundDrawFbo, drawbuffer,'
867 print ' colorRb, depthRb, stencilRb,'
868 print ' rbs, &numRbs);'
870 print ' glDrawBuffer(drawbuffer);'
871 print ' glReadBuffer(drawbuffer);'
873 print ' writeDrawBuffers(json, depthRb, stencilRb);'
875 print ' if (fboCopy) {'
876 print ' glBindFramebuffer(GL_FRAMEBUFFER, boundDrawFbo);'
877 print ' glBindFramebuffer(GL_READ_FRAMEBUFFER, boundReadFbo);'
878 print ' glBindFramebuffer(GL_DRAW_FRAMEBUFFER, boundDrawFbo);'
879 print ' glBindRenderbuffer(GL_RENDERBUFFER_BINDING, boundRb);'
880 print ' glDeleteRenderbuffers(numRbs, rbs);'
881 print ' glDeleteFramebuffers(1, &fboCopy);'
885 print ' json.endObject();'
886 print ' json.endMember(); // framebuffer'
889 def dump_atoms(self, getter, *args):
890 for function, type, count, name in parameters:
891 inflection = getter.inflector.radical + getter.suffix
892 if inflection not in function.split(','):
896 print ' // %s' % name
898 type, value = getter(*(args + (name,)))
899 print ' if (glGetError() != GL_NO_ERROR) {'
900 #print ' std::cerr << "warning: %s(%s) failed\\n";' % (inflection, name)
902 print ' json.beginMember("%s");' % name
903 JsonWriter().visit(type, value)
904 print ' json.endMember();'
910 if __name__ == '__main__':