_eKdZddlmZddlmZddlmZddlmZddl m Z m Z m Z ddl Z ddlZejdZdd l mZmZddlZd ZGd d eZej.Zdd lmZdZej4r ddlmZmZmZmZe,GddeZGddeZGddeZGddeZiZ"dZ#ddZ$y#e$rZ ejCdYdZ [ SdZ [ wwxYw)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|eZdZdZgZdZedZedZdjZ dZ dZ dZ d ZeZd ZiZy) ImplementationzGAbstraction point for the various implementations that can be used Nc:|jj|yN)IMPLEMENTATION_CLASSESappend)clss 3/usr/lib/python3/dist-packages/OpenGL/arrays/vbo.pyregisterzImplementation.register2s ""))30c|j2|jD]#}|}|s |t_|jS|jSr)CHOSENrr)rargspossibleimplementations rget_implementationz!Implementation.get_implementation6sL :: 66 !),:N)zz   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_BUFFERFc|jdxr|jdxs$|jdxr|jdxr|dk7S)NglARBGL_glInitVertexBufferObjectARB) startswithendswithselfnames r_arbnamezImplementation._arbnameVsQ __d $ ?)? B __e % @$--*@644 6rc^|jdr|ddS|jdr|ddS|S)N_ARBr!)r%r&s rbasenamezImplementation.basename[s7 ==& "9  ]]E #9 Krc|jSr) availabler's r __nonzero__zImplementation.__nonzero__bs ~~rcbtjtjfd}|S)z5Produce a deleter callback to delete the given bufferc2r/ j} |} jd|r/ j jy#ttf$r }Yd}~5d}~wwxYw#t$r }Yd}~Hd}~wwxYw#t $r }Yd}~yd}~wwxYw)N)popglDeleteBuffersAttributeError TypeError IndexError _DELETERS_KeyError) rnamedbufferbuferrbuffersgluintkeynfer's rdoBufferDeletionz0Implementation.deleter..doBufferDeletionks $[[]F%f.,,Q4 ##S*+C;"  s3A-ABA*%A*- B;B BB)rNullFunctionErrorrGLuint)r'rArCrErBrDs``` @@rdeleterzImplementation.deleteres+%%  $ r)__name__ __module__ __qualname____doc__rr classmethodrrsplitEXPORTED_NAMESr0r)r.r2__bool__rHr;rrrr-sr F11$(%*EG)*I6 H 2Jrr)acceleratesupport)r VBOOffsetr VBOOffsetHandlerz5Unable to load VBO accelerator from OpenGL_accelerateceZdZdZdZdZ ddZdZee Z dZ ddZ dZ d Zd Zd Zd Zd ZdZdZdZdZeZddZy)r a'Instances can be passed into array-handling routines You can check for whether VBOs are supported by accessing the implementation: if bool(vbo.get_implementation()): # vbo version of code else: # fallback version of code FTNc`||_|j||||_g|_g|_y)a>Initialize the VBO object data -- PyOpenGL-compatible array-data structure, numpy arrays, ctypes arrays, etc. usage -- OpenGL usage constant describing expected data-flow patterns (this is a hint to the GL about where/how to cache the data) GL_STATIC_DRAW_ARB GL_STATIC_READ_ARB GL_STATIC_COPY_ARB GL_DYNAMIC_DRAW_ARB GL_DYNAMIC_READ_ARB GL_DYNAMIC_COPY_ARB GL_STREAM_DRAW_ARB GL_STREAM_READ_ARB GL_STREAM_COPY_ARB DRAW constants suggest to the card that the data will be primarily used to draw on the card. READ that the data will be read back into the GL. COPY means that the data will be used both for DRAW and READ operations. STATIC suggests that the data will only be written once (or a small number of times). DYNAMIC suggests that the data will be used a small number of times before being discarded. 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N)usage set_arraytargetrA_copy_segments)r'datarWrYsizes r__init__z VBO.__init__s0RDJ NND$ ( DKDL"$D rct|ttfr/t|j|jj |S|S)z#Resolve string constant to constant) isinstancerrgetattrrr.r'values rresolvez VBO.resolves:55/2 3 3T5H5H5Q5QSX5Z\\Lrc||_d|_|||_y|j%tj|j|_yy)aUpdate our entire array with new data data -- PyOpenGL-compatible array-data structure, numpy arrays, ctypes arrays, etc. size -- if not provided, will use arrayByteCount to determine the size of the data-array, thus this value (number of bytes) is required when using opaque data-structures, (such as ctypes pointers) as the array data-source. FN)r[copiedr\rarrayByteCount)r'r[r\s rrXz VBO.set_arraysDDIDK  &)88$))E 'rc|jr|jdk(s tdtj|}tj|}|j xsd}|j xst|j}|dkr%|t|jz }t|df}|dkr%|t|jz }t|df}||j|<|jr|jr}||z t|jk(rd|_ yt|rNtj|jd}||z}||z}|jj|||z |fyyyy)aSet 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. 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"rNc@tj|jS)z%Returns a c_void_p( instance.offset ))rrrrs rrzVBOOffsetHandler.from_params??HOO5 5rr)rIrJrKrLrrrQrrrTrTs  #  6rrTcfd}|S)z=Construct a mapped-array cleaner function to unmap vbo.targetc tjjjjy#t $r }Yd}~yd}~wwxYwr) _cleanersr6r glUnmapBufferrY Exception)r|r@rs rcleanz_cleaner..cleansC ; MM3     , ,cjj :   s> A ArQ)rrs` r_cleanerrs; LrcDddlm}|jj|j|}t j |t jt j|jz}||d}tj|t|t|<|S)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 glMapBufferrYrcastPOINTERc_byter\r{r|rr)raccessrvpvp_arrayrps rrrst!   ' 'V =B{{2v~~fmmCHH.DEGH # 'E[[%39IcN Lr)i)%rLOpenGL.arrays.arraydatatyperOpenGL.arrays.formathandlerr OpenGL.raw.GLrOpenGLr OpenGL._bytesrrr rlogging getLogger_logr r r{__all__objectrrrRr ACCELERATE_AVAILABLEOpenGL_accelerate.vborSr rT ImportErrorr@warningrrrrQrrrs@65 00w-/- 'QfQf$66$ ))   ;QvQf>V>4$:m$:L6J6   i   C   s9 B==CCC