1 ##########################################################################
3 # Copyright 2008-2010 VMware, Inc.
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 """GL tracing generator."""
33 from glxapi import glxapi
34 from trace import Tracer, dump_instance
37 class TypeGetter(stdapi.Visitor):
38 '''Determine which glGet*v function that matches the specified type.'''
40 def __init__(self, prefix = 'glGet', long_suffix = True, ext_suffix = ''):
42 self.long_suffix = long_suffix
43 self.ext_suffix = ext_suffix
45 def visit_const(self, const):
46 return self.visit(const.type)
48 def visit_alias(self, alias):
49 if alias.expr == 'GLboolean':
56 elif alias.expr == 'GLdouble':
63 elif alias.expr == 'GLfloat':
70 elif alias.expr in ('GLint', 'GLuint', 'GLsizei'):
80 function_name = self.prefix + suffix + self.ext_suffix
81 return function_name, arg_type
83 def visit_enum(self, enum):
84 return self.visit(glapi.GLint)
86 def visit_bitmask(self, bitmask):
87 return self.visit(glapi.GLint)
89 def visit_opaque(self, pointer):
90 return self.prefix + 'Pointerv' + self.ext_suffix, 'GLvoid *'
93 class GlTracer(Tracer):
100 ("TexCoord", "TEXTURE_COORD"),
101 ("EdgeFlag", "EDGE_FLAG"),
102 ("FogCoord", "FOG_COORD"),
103 ("SecondaryColor", "SECONDARY_COLOR"),
107 def header(self, api):
108 Tracer.header(self, api)
110 print '#include "gltrace.hpp"'
112 print '// Whether user arrays were used'
113 print 'static bool __user_arrays = false;'
114 print 'static bool __user_arrays_arb = false;'
115 print 'static bool __user_arrays_nv = false;'
118 # Which glVertexAttrib* variant to use
119 print 'enum vertex_attrib {'
120 print ' VERTEX_ATTRIB,'
121 print ' VERTEX_ATTRIB_ARB,'
122 print ' VERTEX_ATTRIB_NV,'
125 print 'static vertex_attrib __get_vertex_attrib(void) {'
126 print ' if (__user_arrays_arb || __user_arrays_nv) {'
127 print ' GLboolean __vertex_program = GL_FALSE;'
128 print ' __glGetBooleanv(GL_VERTEX_PROGRAM_ARB, &__vertex_program);'
129 print ' if (__vertex_program) {'
130 print ' if (__user_arrays_nv) {'
131 print ' GLint __vertex_program_binding_nv = 0;'
132 print ' __glGetIntegerv(GL_VERTEX_PROGRAM_BINDING_NV, &__vertex_program_binding_nv);'
133 print ' if (__vertex_program_binding_nv) {'
134 print ' return VERTEX_ATTRIB_NV;'
137 print ' return VERTEX_ATTRIB_ARB;'
140 print ' return VERTEX_ATTRIB;'
144 # Whether we need user arrays
145 print 'static inline bool __need_user_arrays(void)'
147 print ' if (!__user_arrays) {'
148 print ' return false;'
152 for camelcase_name, uppercase_name in self.arrays:
153 function_name = 'gl%sPointer' % camelcase_name
154 enable_name = 'GL_%s_ARRAY' % uppercase_name
155 binding_name = 'GL_%s_ARRAY_BUFFER_BINDING' % uppercase_name
156 print ' // %s' % function_name
157 self.array_prolog(api, uppercase_name)
158 print ' if (__glIsEnabled(%s)) {' % enable_name
159 print ' GLint __binding = 0;'
160 print ' __glGetIntegerv(%s, &__binding);' % binding_name
161 print ' if (!__binding) {'
162 self.array_cleanup(api, uppercase_name)
163 print ' return true;'
166 self.array_epilog(api, uppercase_name)
169 print ' vertex_attrib __vertex_attrib = __get_vertex_attrib();'
171 print ' // glVertexAttribPointer'
172 print ' if (__vertex_attrib == VERTEX_ATTRIB) {'
173 print ' GLint __max_vertex_attribs = 0;'
174 print ' __glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &__max_vertex_attribs);'
175 print ' for (GLint index = 0; index < __max_vertex_attribs; ++index) {'
176 print ' GLint __enabled = 0;'
177 print ' __glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &__enabled);'
178 print ' if (__enabled) {'
179 print ' GLint __binding = 0;'
180 print ' __glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING, &__binding);'
181 print ' if (!__binding) {'
182 print ' return true;'
188 print ' // glVertexAttribPointerARB'
189 print ' if (__vertex_attrib == VERTEX_ATTRIB_ARB) {'
190 print ' GLint __max_vertex_attribs = 0;'
191 print ' __glGetIntegerv(GL_MAX_VERTEX_ATTRIBS_ARB, &__max_vertex_attribs);'
192 print ' for (GLint index = 0; index < __max_vertex_attribs; ++index) {'
193 print ' GLint __enabled = 0;'
194 print ' __glGetVertexAttribivARB(index, GL_VERTEX_ATTRIB_ARRAY_ENABLED_ARB, &__enabled);'
195 print ' if (__enabled) {'
196 print ' GLint __binding = 0;'
197 print ' __glGetVertexAttribivARB(index, GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB, &__binding);'
198 print ' if (!__binding) {'
199 print ' return true;'
205 print ' // glVertexAttribPointerNV'
206 print ' if (__vertex_attrib == VERTEX_ATTRIB_NV) {'
207 print ' for (GLint index = 0; index < 16; ++index) {'
208 print ' GLint __enabled = 0;'
209 print ' __glGetIntegerv(GL_VERTEX_ATTRIB_ARRAY0_NV + index, &__enabled);'
210 print ' if (__enabled) {'
211 print ' return true;'
217 print ' return false;'
221 print 'static void __trace_user_arrays(GLuint maxindex);'
224 print 'struct buffer_mapping {'
226 print ' GLint length;'
228 print ' bool explicit_flush;'
231 for target in self.buffer_targets:
232 print 'struct buffer_mapping __%s_mapping;' % target.lower();
234 print 'static inline struct buffer_mapping *'
235 print 'get_buffer_mapping(GLenum target) {'
236 print ' switch(target) {'
237 for target in self.buffer_targets:
238 print ' case GL_%s:' % target
239 print ' return & __%s_mapping;' % target.lower()
241 print ' OS::DebugMessage("apitrace: warning: unknown buffer target 0x%04X\\n", target);'
242 print ' return NULL;'
247 # Generate memcpy's signature
248 self.trace_function_decl(glapi.memcpy)
250 # Generate a helper function to determine whether a parameter name
251 # refers to a symbolic value or not
253 print 'is_symbolic_pname(GLenum pname) {'
254 print ' switch(pname) {'
255 for function, type, count, name in glparams.parameters:
256 if type is glapi.GLenum:
257 print ' case %s:' % name
258 print ' return true;'
260 print ' return false;'
265 # Generate a helper function to determine whether a parameter value is
266 # potentially symbolic or not; i.e., if the value can be represented in
268 print 'template<class T>'
269 print 'static inline bool'
270 print 'is_symbolic_param(T param) {'
271 print ' return static_cast<T>(static_cast<GLenum>(param)) == param;'
275 # Generate a helper function to know how many elements a parameter has
276 print 'static size_t'
277 print '__gl_param_size(GLenum pname) {'
278 print ' switch(pname) {'
279 for function, type, count, name in glparams.parameters:
281 print ' case %s: return %u;' % (name, count)
282 print ' case GL_COMPRESSED_TEXTURE_FORMATS: {'
283 print ' GLint num_compressed_texture_formats = 0;'
284 print ' __glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &num_compressed_texture_formats);'
285 print ' return num_compressed_texture_formats;'
288 print r' OS::DebugMessage("apitrace: warning: %s: unknown GLenum 0x%04X\n", __FUNCTION__, pname);'
294 array_pointer_function_names = set((
302 "glSecondaryColorPointer",
304 "glInterleavedArrays",
306 "glVertexPointerEXT",
307 "glNormalPointerEXT",
310 "glTexCoordPointerEXT",
311 "glEdgeFlagPointerEXT",
312 "glFogCoordPointerEXT",
313 "glSecondaryColorPointerEXT",
315 "glVertexAttribPointer",
316 "glVertexAttribPointerARB",
317 "glVertexAttribPointerNV",
318 "glVertexAttribIPointer",
319 "glVertexAttribIPointerEXT",
320 "glVertexAttribLPointer",
321 "glVertexAttribLPointerEXT",
323 #"glMatrixIndexPointerARB",
326 draw_function_names = set((
329 'glDrawRangeElements',
331 'glMultiDrawElements',
332 'glDrawArraysInstanced',
333 'glDrawElementsInstanced',
334 'glDrawArraysInstancedARB',
335 'glDrawElementsInstancedARB',
336 'glDrawElementsBaseVertex',
337 'glDrawRangeElementsBaseVertex',
338 'glDrawElementsInstancedBaseVertex',
339 'glMultiDrawElementsBaseVertex',
340 'glDrawArraysIndirect',
341 'glDrawElementsIndirect',
343 'glDrawRangeElementsEXT',
344 'glDrawRangeElementsEXT_size',
345 'glMultiDrawArraysEXT',
346 'glMultiDrawElementsEXT',
347 'glMultiModeDrawArraysIBM',
348 'glMultiModeDrawElementsIBM',
349 'glDrawArraysInstancedEXT',
350 'glDrawElementsInstancedEXT',
353 interleaved_formats = [
366 'GL_T2F_C4F_N3F_V3F',
367 'GL_T4F_C4F_N3F_V4F',
370 def trace_function_impl_body(self, function):
371 # Defer tracing of user array pointers...
372 if function.name in self.array_pointer_function_names:
373 print ' GLint __array_buffer = 0;'
374 print ' __glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &__array_buffer);'
375 print ' if (!__array_buffer) {'
376 print ' __user_arrays = true;'
377 if function.name == "glVertexAttribPointerARB":
378 print ' __user_arrays_arb = true;'
379 if function.name == "glVertexAttribPointerNV":
380 print ' __user_arrays_nv = true;'
381 self.dispatch_function(function)
383 # And also break down glInterleavedArrays into the individual calls
384 if function.name == 'glInterleavedArrays':
387 # Initialize the enable flags
388 for camelcase_name, uppercase_name in self.arrays:
389 flag_name = '__' + uppercase_name.lower()
390 print ' GLboolean %s = GL_FALSE;' % flag_name
393 # Switch for the interleaved formats
394 print ' switch (format) {'
395 for format in self.interleaved_formats:
396 print ' case %s:' % format
397 for camelcase_name, uppercase_name in self.arrays:
398 flag_name = '__' + uppercase_name.lower()
399 if format.find('_' + uppercase_name[0]) >= 0:
400 print ' %s = GL_TRUE;' % flag_name
407 # Emit fake glEnableClientState/glDisableClientState flags
408 for camelcase_name, uppercase_name in self.arrays:
409 flag_name = '__' + uppercase_name.lower()
410 enable_name = 'GL_%s_ARRAY' % uppercase_name
412 # Emit a fake function
414 print ' static const Trace::FunctionSig &__sig = %s ? __glEnableClientState_sig : __glDisableClientState_sig;' % flag_name
415 print ' unsigned __call = __writer.beginEnter(&__sig);'
416 print ' __writer.beginArg(0);'
417 dump_instance(glapi.GLenum, enable_name)
418 print ' __writer.endArg();'
419 print ' __writer.endEnter();'
420 print ' __writer.beginLeave(__call);'
421 print ' __writer.endLeave();'
427 # ... to the draw calls
428 if function.name in self.draw_function_names:
429 print ' if (__need_user_arrays()) {'
430 arg_names = ', '.join([arg.name for arg in function.args[1:]])
431 print ' GLuint maxindex = __%s_maxindex(%s);' % (function.name, arg_names)
432 print ' __trace_user_arrays(maxindex);'
435 # Emit a fake memcpy on buffer uploads
436 if function.name in ('glUnmapBuffer', 'glUnmapBufferARB', ):
437 print ' struct buffer_mapping *mapping = get_buffer_mapping(target);'
438 print ' if (mapping && mapping->write && !mapping->explicit_flush) {'
439 self.emit_memcpy('mapping->map', 'mapping->map', 'mapping->length')
441 if function.name in ('glFlushMappedBufferRange', 'glFlushMappedBufferRangeAPPLE'):
442 # TODO: avoid copying [0, offset] bytes
443 print ' struct buffer_mapping *mapping = get_buffer_mapping(target);'
444 print ' if (mapping) {'
445 if function.name.endswith('APPLE'):
446 print ' GLsizeiptr length = size;'
447 print ' mapping->explicit_flush = true;'
448 print ' //assert(offset + length <= mapping->length);'
449 self.emit_memcpy('mapping->map', 'mapping->map', 'offset + length')
451 # FIXME: glFlushMappedNamedBufferRangeEXT
453 # Don't leave vertex attrib locations to chance. Instead emit fake
454 # glBindAttribLocation calls to ensure that the same locations will be
455 # used when retracing. Trying to remap locations after the fact would
456 # be an herculian task given that vertex attrib locations appear in
457 # many entry-points, including non-shader related ones.
458 if function.name == 'glLinkProgram':
459 Tracer.dispatch_function(self, function)
460 print ' GLint active_attributes = 0;'
461 print ' __glGetProgramiv(program, GL_ACTIVE_ATTRIBUTES, &active_attributes);'
462 print ' for (GLuint attrib = 0; attrib < active_attributes; ++attrib) {'
463 print ' GLint size = 0;'
464 print ' GLenum type = 0;'
465 print ' GLchar name[256];'
466 # TODO: Use ACTIVE_ATTRIBUTE_MAX_LENGTH instead of 256
467 print ' __glGetActiveAttrib(program, attrib, sizeof name, NULL, &size, &type, name);'
468 print " if (name[0] != 'g' || name[1] != 'l' || name[2] != '_') {"
469 print ' GLint location = __glGetAttribLocation(program, name);'
470 print ' if (location >= 0) {'
471 bind_function = glapi.glapi.get_function_by_name('glBindAttribLocation')
472 self.fake_call(bind_function, ['program', 'location', 'name'])
476 if function.name == 'glLinkProgramARB':
477 Tracer.dispatch_function(self, function)
478 print ' GLint active_attributes = 0;'
479 print ' __glGetObjectParameterivARB(programObj, GL_OBJECT_ACTIVE_ATTRIBUTES_ARB, &active_attributes);'
480 print ' for (GLuint attrib = 0; attrib < active_attributes; ++attrib) {'
481 print ' GLint size = 0;'
482 print ' GLenum type = 0;'
483 print ' GLcharARB name[256];'
484 # TODO: Use ACTIVE_ATTRIBUTE_MAX_LENGTH instead of 256
485 print ' __glGetActiveAttribARB(programObj, attrib, sizeof name, NULL, &size, &type, name);'
486 print " if (name[0] != 'g' || name[1] != 'l' || name[2] != '_') {"
487 print ' GLint location = __glGetAttribLocationARB(programObj, name);'
488 print ' if (location >= 0) {'
489 bind_function = glapi.glapi.get_function_by_name('glBindAttribLocationARB')
490 self.fake_call(bind_function, ['programObj', 'location', 'name'])
495 Tracer.trace_function_impl_body(self, function)
497 def dispatch_function(self, function):
498 if function.name in ('glLinkProgram', 'glLinkProgramARB'):
499 # These functions have been dispatched already
502 # We implement the GREMEDY extensions, not the driver
503 if function.name in ('glStringMarkerGREMEDY', 'glFrameTerminatorGREMEDY'):
506 Tracer.dispatch_function(self, function)
508 def emit_memcpy(self, dest, src, length):
509 print ' unsigned __call = __writer.beginEnter(&__memcpy_sig);'
510 print ' __writer.beginArg(0);'
511 print ' __writer.writeOpaque(%s);' % dest
512 print ' __writer.endArg();'
513 print ' __writer.beginArg(1);'
514 print ' __writer.writeBlob(%s, %s);' % (src, length)
515 print ' __writer.endArg();'
516 print ' __writer.beginArg(2);'
517 print ' __writer.writeUInt(%s);' % length
518 print ' __writer.endArg();'
519 print ' __writer.endEnter();'
520 print ' __writer.beginLeave(__call);'
521 print ' __writer.endLeave();'
525 'ELEMENT_ARRAY_BUFFER',
527 'PIXEL_UNPACK_BUFFER',
530 def wrap_ret(self, function, instance):
531 Tracer.wrap_ret(self, function, instance)
533 if function.name == 'glGetString':
534 print ' if (__result) {'
535 print ' switch (name) {'
536 print ' case GL_EXTENSIONS:'
537 print ' __result = gltrace::translateExtensionsString(__result);'
544 if function.name in ('glMapBuffer', 'glMapBufferARB'):
545 print ' struct buffer_mapping *mapping = get_buffer_mapping(target);'
546 print ' if (mapping) {'
547 print ' mapping->map = %s;' % (instance)
548 print ' mapping->length = 0;'
549 print ' __glGetBufferParameteriv(target, GL_BUFFER_SIZE, &mapping->length);'
550 print ' mapping->write = (access != GL_READ_ONLY);'
551 print ' mapping->explicit_flush = false;'
554 if function.name == 'glMapBufferRange':
555 print ' struct buffer_mapping *mapping = get_buffer_mapping(target);'
556 print ' if (mapping) {'
557 print ' mapping->map = %s;' % (instance)
558 print ' mapping->length = length;'
559 print ' mapping->write = access & GL_MAP_WRITE_BIT;'
560 print ' mapping->explicit_flush = access & GL_MAP_FLUSH_EXPLICIT_BIT;'
568 def gl_boolean(self, value):
569 return self.boolean_names[int(bool(value))]
571 # Names of the functions that unpack from a pixel buffer object. See the
572 # ARB_pixel_buffer_object specification.
573 unpack_function_names = set([
577 'glCompressedTexImage1D',
578 'glCompressedTexImage2D',
579 'glCompressedTexImage3D',
580 'glCompressedTexSubImage1D',
581 'glCompressedTexSubImage2D',
582 'glCompressedTexSubImage3D',
583 'glConvolutionFilter1D',
584 'glConvolutionFilter2D',
586 'glMultiTexImage1DEXT',
587 'glMultiTexImage2DEXT',
588 'glMultiTexImage3DEXT',
589 'glMultiTexSubImage1DEXT',
590 'glMultiTexSubImage2DEXT',
591 'glMultiTexSubImage3DEXT',
596 'glSeparableFilter2D',
604 'glTexSubImage1DEXT',
606 'glTexSubImage2DEXT',
608 'glTexSubImage3DEXT',
609 'glTextureImage1DEXT',
610 'glTextureImage2DEXT',
611 'glTextureImage3DEXT',
612 'glTextureSubImage1DEXT',
613 'glTextureSubImage2DEXT',
614 'glTextureSubImage3DEXT',
617 def dump_arg_instance(self, function, arg):
618 if function.name in self.draw_function_names and arg.name == 'indices':
619 print ' GLint __element_array_buffer = 0;'
620 print ' __glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &__element_array_buffer);'
621 print ' if (!__element_array_buffer) {'
622 if isinstance(arg.type, stdapi.Array):
623 print ' __writer.beginArray(%s);' % arg.type.length
624 print ' for(GLsizei i = 0; i < %s; ++i) {' % arg.type.length
625 print ' __writer.beginElement();'
626 print ' __writer.writeBlob(%s[i], count[i]*__gl_type_size(type));' % (arg.name)
627 print ' __writer.endElement();'
629 print ' __writer.endArray();'
631 print ' __writer.writeBlob(%s, count*__gl_type_size(type));' % (arg.name)
633 Tracer.dump_arg_instance(self, function, arg)
637 # Recognize offsets instead of blobs when a PBO is bound
638 if function.name in self.unpack_function_names \
639 and (isinstance(arg.type, stdapi.Blob) \
640 or (isinstance(arg.type, stdapi.Const) \
641 and isinstance(arg.type.type, stdapi.Blob))):
643 print ' GLint __unpack_buffer = 0;'
644 print ' __glGetIntegerv(GL_PIXEL_UNPACK_BUFFER_BINDING, &__unpack_buffer);'
645 print ' if (__unpack_buffer) {'
646 print ' __writer.writeOpaque(%s);' % arg.name
648 Tracer.dump_arg_instance(self, function, arg)
653 # Several GL state functions take GLenum symbolic names as
654 # integer/floats; so dump the symbolic name whenever possible
655 if function.name.startswith('gl') \
656 and arg.type in (glapi.GLint, glapi.GLfloat) \
657 and arg.name == 'param':
659 assert function.args[arg.index - 1].name == 'pname'
660 assert function.args[arg.index - 1].type == glapi.GLenum
661 print ' if (is_symbolic_pname(pname) && is_symbolic_param(%s)) {' % arg.name
662 dump_instance(glapi.GLenum, arg.name)
664 Tracer.dump_arg_instance(self, function, arg)
668 Tracer.dump_arg_instance(self, function, arg)
670 def footer(self, api):
671 Tracer.footer(self, api)
673 # A simple state tracker to track the pointer values
675 print 'static void __trace_user_arrays(GLuint maxindex)'
678 for camelcase_name, uppercase_name in self.arrays:
679 function_name = 'gl%sPointer' % camelcase_name
680 enable_name = 'GL_%s_ARRAY' % uppercase_name
681 binding_name = 'GL_%s_ARRAY_BUFFER_BINDING' % uppercase_name
682 function = api.get_function_by_name(function_name)
684 print ' // %s' % function.name
685 self.array_trace_prolog(api, uppercase_name)
686 self.array_prolog(api, uppercase_name)
687 print ' if (__glIsEnabled(%s)) {' % enable_name
688 print ' GLint __binding = 0;'
689 print ' __glGetIntegerv(%s, &__binding);' % binding_name
690 print ' if (!__binding) {'
692 # Get the arguments via glGet*
693 for arg in function.args:
694 arg_get_enum = 'GL_%s_ARRAY_%s' % (uppercase_name, arg.name.upper())
695 arg_get_function, arg_type = TypeGetter().visit(arg.type)
696 print ' %s %s = 0;' % (arg_type, arg.name)
697 print ' __%s(%s, &%s);' % (arg_get_function, arg_get_enum, arg.name)
699 arg_names = ', '.join([arg.name for arg in function.args[:-1]])
700 print ' size_t __size = __%s_size(%s, maxindex);' % (function.name, arg_names)
702 # Emit a fake function
703 self.array_trace_intermezzo(api, uppercase_name)
704 print ' unsigned __call = __writer.beginEnter(&__%s_sig);' % (function.name,)
705 for arg in function.args:
706 assert not arg.output
707 print ' __writer.beginArg(%u);' % (arg.index,)
708 if arg.name != 'pointer':
709 dump_instance(arg.type, arg.name)
711 print ' __writer.writeBlob((const void *)%s, __size);' % (arg.name)
712 print ' __writer.endArg();'
714 print ' __writer.endEnter();'
715 print ' __writer.beginLeave(__call);'
716 print ' __writer.endLeave();'
719 self.array_epilog(api, uppercase_name)
720 self.array_trace_epilog(api, uppercase_name)
723 # Samething, but for glVertexAttribPointer*
725 # Some variants of glVertexAttribPointer alias conventional and generic attributes:
726 # - glVertexAttribPointer: no
727 # - glVertexAttribPointerARB: implementation dependent
728 # - glVertexAttribPointerNV: yes
730 # This means that the implementations of these functions do not always
731 # alias, and they need to be considered independently.
733 print ' vertex_attrib __vertex_attrib = __get_vertex_attrib();'
735 for suffix in ['', 'ARB', 'NV']:
737 SUFFIX = '_' + suffix
740 function_name = 'glVertexAttribPointer' + suffix
741 print ' // %s' % function_name
742 print ' if (__vertex_attrib == VERTEX_ATTRIB%s) {' % SUFFIX
744 print ' GLint __max_vertex_attribs = 16;'
746 print ' GLint __max_vertex_attribs = 0;'
747 print ' __glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &__max_vertex_attribs);'
748 print ' for (GLint index = 0; index < __max_vertex_attribs; ++index) {'
749 print ' GLint __enabled = 0;'
751 print ' __glGetIntegerv(GL_VERTEX_ATTRIB_ARRAY0_NV + index, &__enabled);'
753 print ' __glGetVertexAttribiv%s(index, GL_VERTEX_ATTRIB_ARRAY_ENABLED%s, &__enabled);' % (suffix, SUFFIX)
754 print ' if (__enabled) {'
755 print ' GLint __binding = 0;'
757 # It doesn't seem possible to use VBOs with NV_vertex_program.
758 print ' __glGetVertexAttribiv%s(index, GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING%s, &__binding);' % (suffix, SUFFIX)
759 print ' if (!__binding) {'
761 function = api.get_function_by_name(function_name)
763 # Get the arguments via glGet*
764 for arg in function.args[1:]:
766 arg_get_enum = 'GL_ATTRIB_ARRAY_%s%s' % (arg.name.upper(), SUFFIX)
768 arg_get_enum = 'GL_VERTEX_ATTRIB_ARRAY_%s%s' % (arg.name.upper(), SUFFIX)
769 arg_get_function, arg_type = TypeGetter('glGetVertexAttrib', False, suffix).visit(arg.type)
770 print ' %s %s = 0;' % (arg_type, arg.name)
771 print ' __%s(index, %s, &%s);' % (arg_get_function, arg_get_enum, arg.name)
773 arg_names = ', '.join([arg.name for arg in function.args[1:-1]])
774 print ' size_t __size = __%s_size(%s, maxindex);' % (function.name, arg_names)
776 # Emit a fake function
777 print ' unsigned __call = __writer.beginEnter(&__%s_sig);' % (function.name,)
778 for arg in function.args:
779 assert not arg.output
780 print ' __writer.beginArg(%u);' % (arg.index,)
781 if arg.name != 'pointer':
782 dump_instance(arg.type, arg.name)
784 print ' __writer.writeBlob((const void *)%s, __size);' % (arg.name)
785 print ' __writer.endArg();'
787 print ' __writer.endEnter();'
788 print ' __writer.beginLeave(__call);'
789 print ' __writer.endLeave();'
800 # Hooks for glTexCoordPointer, which is identical to the other array
801 # pointers except the fact that it is indexed by glClientActiveTexture.
804 def array_prolog(self, api, uppercase_name):
805 if uppercase_name == 'TEXTURE_COORD':
806 print ' GLint client_active_texture = 0;'
807 print ' __glGetIntegerv(GL_CLIENT_ACTIVE_TEXTURE, &client_active_texture);'
808 print ' GLint max_texture_coords = 0;'
809 print ' __glGetIntegerv(GL_MAX_TEXTURE_COORDS, &max_texture_coords);'
810 print ' for (GLint unit = 0; unit < max_texture_coords; ++unit) {'
811 print ' GLenum texture = GL_TEXTURE0 + unit;'
812 print ' __glClientActiveTexture(texture);'
814 def array_trace_prolog(self, api, uppercase_name):
815 if uppercase_name == 'TEXTURE_COORD':
816 print ' bool client_active_texture_dirty = false;'
818 def array_epilog(self, api, uppercase_name):
819 if uppercase_name == 'TEXTURE_COORD':
821 self.array_cleanup(api, uppercase_name)
823 def array_cleanup(self, api, uppercase_name):
824 if uppercase_name == 'TEXTURE_COORD':
825 print ' __glClientActiveTexture(client_active_texture);'
827 def array_trace_intermezzo(self, api, uppercase_name):
828 if uppercase_name == 'TEXTURE_COORD':
829 print ' if (texture != client_active_texture || client_active_texture_dirty) {'
830 print ' client_active_texture_dirty = true;'
831 self.fake_glClientActiveTexture_call(api, "texture");
834 def array_trace_epilog(self, api, uppercase_name):
835 if uppercase_name == 'TEXTURE_COORD':
836 print ' if (client_active_texture_dirty) {'
837 self.fake_glClientActiveTexture_call(api, "client_active_texture");
840 def fake_glClientActiveTexture_call(self, api, texture):
841 function = api.get_function_by_name('glClientActiveTexture')
842 self.fake_call(function, [texture])
844 def fake_call(self, function, args):
845 print ' unsigned __fake_call = __writer.beginEnter(&__%s_sig);' % (function.name,)
846 for arg, instance in zip(function.args, args):
847 assert not arg.output
848 print ' __writer.beginArg(%u);' % (arg.index,)
849 dump_instance(arg.type, instance)
850 print ' __writer.endArg();'
851 print ' __writer.endEnter();'
852 print ' __writer.beginLeave(__fake_call);'
853 print ' __writer.endLeave();'