create_vbo   xtlang


Defined in:  https://github.com/digego/extempore/tree/v0.8.9/libs/external/opengl.xtm

Implementation

;; asumming always GL_ARRAY_BUFFER at the moment
;; type is one of GL_DYNAMIC_DRAW, GL_STATIC_DRAW, GL_STREAM_DRAW etc..
(bind-func create_vbo
  (lambda (size:i32 data:i8* type:i32)
    (let ((vbo:E_vbo* (halloc))
          (vboid:i32* (salloc)))
      (glGenBuffers 1 vboid)
      (glBindBuffer GL_ARRAY_BUFFER (pref vboid 0))
      (glBufferData GL_ARRAY_BUFFER (convert size) null type)
      ;; (glBufferSubData GL_ARRAY_BUFFER 0 size data)
      (tfill! vbo (pref vboid 0) size data)
      (glBindBuffer GL_ARRAY_BUFFER 0)
      vbo)))


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