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EGLImages with renderbuffer as sibling and texture as target sibling

I am trying to establish EGLImagewhere the original sibling is GL_RENDERBUFFER( EGLClientBufferspecified as an argument eglCreateImageKHR). In another context, I create GL_TEXTURE_2Dand designate it as a target affinity EGLImagewith glEGLImageTargetTexture2DOES. Unfortunately, the last call leads to a GL_INVALID_OPERATION. If both the source and target siblings GL_TEXTURE_2D, the setting works like a charm.

From my reading of the specification, this should be a valid operation. It is also possible that my smaller test case has another orthogonal problem. Although I doubt it, since the setup works fine when both the source and target siblings GL_TEXTURE_2D. However, if this was a problem (and such use EGLImagewas permissible), what could be a possible problem that could lead to GL_INVALID_OPERATION. Or am I just mistaken in my interpretation of the specification?

Associated Extensions:

http://www.khronos.org/registry/gles/extensions/OES/OES_EGL_image.txt

http://www.khronos.org/registry/egl/extensions/KHR/EGL_KHR_image_base.txt

Explanations:

  • I check the availability of all the extensions in the specification ( EGL_KHR_image, EGL_KHR_image_base, EGL_KHR_gl_texture_2D_image, EGL_KHR_gl_renderbuffer_imageetc.).
  • , EGLImage , GL_RENDERBUFFER vs a GL_TEXTURE_2D . OES_EGL_image_external , renderbuffer. , , GL_INVALID_OPERATION renderbuffer. .
  • GL EGL .
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http://www.khronos.org/registry/gles/extensions/OES/OES_EGL_image.txt

GL , eglImageOES (, , eglImageOES), INVALID_OPERATION.

glFramebufferRenderbufferOES renderbuffer, eglCreateImageKHR? , , (, , ), , .

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Source: https://habr.com/ru/post/1537605/

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