3jLSrSSKJr SSKJr SSKJr SSKJr SSK J r J r J r SSK r SSKr\R"S5rSS K JrJr SSKrS r"S S \5r\R.rSS KJr Sr\R4(a SSKJrJrJrJr \c,"SS\5r"SS\5r"SS\5r"SS\5r0r"Sr#SSjr$g!\ar \RCS5 Sr C NVSr C ff=f)aVertexBufferObject helper class Basic usage: my_data = numpy.array( data, 'f') my_vbo = vbo.VBO( my_data ) ... my_vbo.bind() try: ... glVertexPointer( my_vbo, ... ) ... glNormalPointer( my_vbo + 12, ... ) finally: my_vbo.unbind() or with my_vbo: ... glVertexPointer( my_vbo, ... ) ... glNormalPointer( my_vbo + 12, ... ) See the OpenGLContext shader tutorials for a gentle introduction on the usage of VBO objects: http://pyopengl.sourceforge.net/context/tutorials/shader_intro.xhtml This implementation will choose either the ARB or Core (OpenGL 1.5) implementation of the VBO functions. ) ArrayDatatype) FormatHandler)_types)error)bytesunicodeas_8_bitNzOpenGL.arrays.vbo)long integer_types)VBO VBOHandlermapVBOc\rSrSrSr/rSr\S5r\S5r SR5r Sr Sr S rS r\rS r0rS rg) Implementation1zBAbstraction point for the various implementations that can be usedNc:URRU5 gN)IMPLEMENTATION_CLASSESappend)clss K/home/wildlama/miniconda3/lib/python3.13/site-packages/OpenGL/arrays/vbo.pyregisterImplementation.register7s ""))#.cURc9URH)nU"5nU(dMU[l UR$ UR$r)CHOSENrr)rargspossibleimplementations rget_implementation!Implementation.get_implementation;sI :: 66!)8,:N)zz 7 zzraglGenBuffers glBindBuffer glBufferData glBufferSubData glDeleteBuffers glMapBuffer glUnmapBuffer GL_STATIC_DRAW GL_STATIC_READ GL_STATIC_COPY GL_DYNAMIC_DRAW GL_DYNAMIC_READ GL_DYNAMIC_COPY GL_STREAM_DRAW GL_STREAM_READ GL_STREAM_COPY GL_ARRAY_BUFFER GL_ELEMENT_ARRAY_BUFFER GL_UNIFORM_BUFFER GL_TEXTURE_BUFFER GL_TRANSFORM_FEEDBACK_BUFFERFcURS5=(a URS5=(d) URS5=(a URS5=(a US:g$)NglARBGL_glInitVertexBufferObjectARB) startswithendswithselfnames r_arbnameImplementation._arbname\sQ __T " ;t}}U'; A&?4==+?644 6rcrURS5(aUSS$URS5(aUSS$U$)N_ARBr$)r(r)s rbasenameImplementation.basenamebs= == 9  ]]5 ! !9 KrcUR$r) availabler*s r __nonzero__Implementation.__nonzero__js ~~rcd^^^^^[Rm[RmUUUUU4SjnU$)z5Produce a deleter callback to delete the given buffercP>T(a5TR5nT"U5nT RSU5 T(aM5T R RT5 g![T[4a nSnAN.doBufferDeletionvs $[[]F%Vn,,Q4' ##C(+C;"  s3A9ABA61A69 B B B% B%)rNullFunctionErrorrGLuint)r*rGrIrKrHrJs``` @@rdeleterImplementation.deleteros+%%  & r)__name__ __module__ __qualname____firstlineno____doc__rr classmethodrr splitEXPORTED_NAMESr5r,r2r7__bool__rOrA__static_attributes__rQrrrr1srL F//$(%*EG)*I6 H 8Jrr)acceleratesupport)r VBOOffsetr VBOOffsetHandlerz5Unable to load VBO accelerator from OpenGL_acceleratec\rSrSrSrSrSrSSjrSr\ "\ 5r Sr SSjr S rS rS rS rS rSrSrSrSrSr\rSSjrSrg)r zInstances can be passed into array-handling routines You can check for whether VBOs are supported by accessing the implementation: if bool(vbo.get_implementation()): # vbo version of code else: # fallback version of code FTNcZX lURX5 X0l/Ul/Ulg)asInitialize the VBO object data -- PyOpenGL-compatible array-data structure, numpy arrays, ctypes arrays, etc. usage -- OpenGL usage constant describing expected data-flow patterns (this is a hint to the GL about where/how to cache the data) GL_STATIC_DRAW_ARB GL_STATIC_READ_ARB GL_STATIC_COPY_ARB GL_DYNAMIC_DRAW_ARB GL_DYNAMIC_READ_ARB GL_DYNAMIC_COPY_ARB GL_STREAM_DRAW_ARB GL_STREAM_READ_ARB GL_STREAM_COPY_ARB DRAW constants suggest to the card that the data will be primarily used to draw on the card. READ that the data will be read back into the GL. COPY means that the data will be used both for DRAW and READ operations. STATIC suggests that the data will only be written once (or a small number of times). DYNAMIC suggests that the data will be used a small number of times before being discarded. STREAM suggests that the data will be updated approximately every time that it is used (that is, it will likely only be used once). target -- VBO target to which to bind (array or indices) GL_ARRAY_BUFFER -- array-data binding GL_ELEMENT_ARRAY_BUFFER -- index-data binding GL_UNIFORM_BUFFER -- used to pass mid-size arrays of data packed into a buffer GL_TEXTURE_BUFFER -- used to pass large arrays of data as a pseudo-texture GL_TRANSFORM_FEEDBACK_BUFFER -- used to receive transformed vertices for processing size -- if not provided, will use arrayByteCount to determine the size of the data-array, thus this value (number of bytes) is required when using opaque data-structures, (such as ctypes pointers) as the array data-source. N)usage set_arraytargetrG_copy_segments)r*datarbrdsizes r__init__ VBO.__init__s*XJ NN4 & KDL"$D rc[U[[45(a/[URURR U55$U$)z#Resolve string constant to constant) isinstancerrgetattrrr2r*values rresolve VBO.resolves>%%!122t22D4G4G4P4PQV4WXXLrcXlSUlUbX lgURb&[R"UR5Ulgg)abUpdate our entire array with new data data -- PyOpenGL-compatible array-data structure, numpy arrays, ctypes arrays, etc. size -- if not provided, will use arrayByteCount to determine the size of the data-array, thus this value (number of bytes) is required when using opaque data-structures, (such as ctypes pointers) as the array data-source. FN)rfcopiedrgrarrayByteCount)r*rfrgs rrc VBO.set_arrays@IDK &)88C 'rcUR(aURS:Xd [S5e[R"U5nUR=(d SnUR =(d [ UR5nUS:a%U[ UR5- n[US45nUS:a%U[ UR5- n[US45nX0RU'UR(aUR(aXE- [ UR5:XaSUl g[ U5(aL[R"URS5nXF-nXV-nURRXEU- U45 gggg)acSet slice of data on the array and vbo (if copied already) slice -- the Python slice object determining how the data should be copied into the vbo/array array -- something array-compatible that will be used as the source of the data, note that the data-format will have to be the same as the internal data-array to work properly, if not, the amount of data copied will be wrong. This is a reasonably complex operation, it has to have all sorts of state-aware changes to correctly map the source into the low-level OpenGL view of the buffer (which is just bytes as far as the GL is concerned). r;z(Don't know how to map stepped arrays yetrFN)stepNotImplementedErrorrasArraystartstoplenrfmaxrrrGrsrer)r*slicearrayrfryrzrgs r __setitem__VBO.__setitem__s5zz%**/)B!((/DKK$1E::/TYYDqyTYY'UAJaxDII&D!9~#IIe {{t||<3tyy>1"'DKYY)77 ! EDMELD''..u t/LM ,{rc,[UR5$)z.Delegate length/truth checks to our data-array)r{rfr6s r__len__ VBO.__len__,styy> !rcPUS;a[URU5$[U5e)z4Delegate failing attribute lookups to our data-array)rfrbrdrGrr_I_rre)rlrfr>r*rIs r __getattr__VBO.__getattr__0s-  tyy#..$S))rc UR(aS5e[URRS55/UlUR UR 5UlUR UR 5Ul[R"XRRUR[U555URR[U5'UR$)zCreate the internal buffer(s)zAlready created the bufferr;) rGr r glGenBuffersrordrbweakrefrefrOidrAr6s rcreate_buffersVBO.create_buffers@s|| E%E E# !4!4!A!A!!DEFDL,,t{{3DKdjj1DJ7>{{))11$,,4I8D   * *2d8 4<< rcUR(dS5eUR(aUR(aUR(aoURRS5upn[R "U5nUR RURXU5 UR(aMngggURb2URc%[R"UR5Ul UR RURURURUR5 SUlg)aCopy our data into the buffer on the GL side (if required) Ensures that the GL's version of the data in the VBO matches our internal view of the data, either by copying the entire data-set over with glBufferData or by updating the already-transferred data with glBufferSubData. z)Should do create_buffers before copy_datarNT)rGrrrer<rvoidDataPointerrglBufferSubDatardrfrgrs glBufferDatarb)r*ryrgrfdataptrs r copy_data VBO.copy_dataKs<< P!P P<{{&&--,0,?,?,C,CA,F)T"/"?"?"E++;; KKg---'99(TYY-> - < rrM)r*rFs rdelete VBO.deletegsk||ll++;;At||?O?OPQ?RSlll+E,C,CDs5A//BBcbUR(dUR5 URS$)zGet our VBO idr)rGrr6s r__int__ VBO.__int__ps#<<##%<<? "rcUR(dUR5 URRURURS5 UR 5 g)zBind this buffer for use in vertex calls If we have not yet created our implementation-level VBO, then we will create it before binding. Once bound, calls self.copy_data() rN)rGrr glBindBufferrdrr6s rbindVBO.bindvsC <<##%    , ,T[[$,,q/ J NN rcPURRURS5 g)z7Unbind the buffer (make normal array operations active)rN)rrrdr6s runbind VBO.unbinds    , ,T[[!  ?T) )rc$UR5 g)zContext manager exitF)r)r*exc_typeexc_valexc_tbs r__exit__ VBO.__exit__s KKMr)rerGrrrfrgrdrb)GL_DYNAMIC_DRAWGL_ARRAY_BUFFERNr)NNN)rRrSrTrUrVrr _no_cache_rhrpropertyr rrorcrrrrrrrrrr __enter__rr[rQrrr r s  $$ 0 %d!    D1 Nf " *  #8  #  = *  rr c*\rSrSrSrSrSrSrSrg)r]izOffset into a VBO instance This class is normally instantiated by doing a my_vbo + int operation, it can be passed to VBO requiring operations and will generate the appropriate integer offset value to be passed in. cXlX lg)zrs rrVBOOffset.__getattr__s(e|txx-- S!BC Crc[US5(a URn[URURU-5$)zAllow adding integers or other VBOOffset instances returns a VBOOffset to the this VBO with other.offset + self.offset or, if other has no offset, returns VBOOffset with self.offset + other r)rrr]rrs rrVBOOffset.__add__s4 uh'' TXXt{{U':; ;r)rrN) rRrSrTrUrVrhrrr[rQrrr]r]s  !  D  [RT5 TRRTR5 g![ a nSnAgSnAff=fr) _cleanersr<r glUnmapBufferrd Exception)rrFrs rclean_cleaner..cleansC 9 MM#     , ,SZZ 8   s> A ArQ)rrs` r_cleanerrs9 LrcJSSKJn URRURU5n[ R "U[ R"[ RUR-55nU"US5n[R"U[U55[U'U$)aXMap the given buffer into a numpy array... Method taken from: http://www.mail-archive.com/numpy-discussion@lists.sourceforge.net/msg01161.html This should be considered an *experimental* API, it is not guaranteed to be available in future revisions of this library! Simplification to use ctypes cast from comment by 'sashimi' on my blog... r) frombufferB)numpyrr glMapBufferrdrcastPOINTERc_bytergrrrr)raccessrvpvp_arrayr~s rrrst!   ' ' F ;B{{2v~~fmmchh.FGHH x %E[[ 6IcN Lr)i)%rVOpenGL.arrays.arraydatatyperOpenGL.arrays.formathandlerr OpenGL.raw.GLrOpenGLr OpenGL._bytesrrr rlogging getLogger_logr r r__all__objectrr r\r ACCELERATE_AVAILABLEOpenGL_accelerate.vbor]r r^ ImportErrorrFwarningrrrrQrrrsB65 22,-- )ZVZz$66$ ))N  ;tftl CC% C  C%