GL_INVALID_OPERATION error, when doing multisample framebuffer to multisample EGL Surface blitting

mallibeerala — Wed, 20 May 2026 10:40:21 GMT

Hi,
I am doing multisample framebuffer to multisample EGL Surface blitting using Opengl ES in my I.MX8QM Eval board and I am getting error as "GL_INVALID_OPERATION". Below are the steps I did.

FrameBufferObject created with multisampled renderbuffer attached as glRenderbufferStorageMultisample(GL_RENDERBUFFER, 4, GL_RGBA8, width,height); and drawing in to FBO.
When using glBlitFramebuffer to render from FBO in to Default Framebuffer ,it gives GL_INVALID_OPERATION error when EGL window surface is created with attributes:
- EGL_SAMPLES = 4
- EGL_RED_SIZE = 8
- EGL_GREEN_SIZE = 8
- EGL_BLUE_SIZE = 8
- EGL_ALPHA_SIZE = 8
When EGL Surface is created with EGL_SAMPLES = 0 glBlitFramebuffer draws in to default framebuffer correctly.

Note: Source and Destination rectangles are exactly same size in the glBlitFramebuffer.

Re: GL_INVALID_OPERATION error, when doing multisample framebuffer to multisample EGL Surface blitti

AldoG — Fri, 22 May 2026 01:06:37 GMT

Hello,

This kind of use case is forbidden in OpenGL ES, you cannot resolve (blit) from multisampled buffer to a multisampled buffer.

As specified in the documentation:
https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glBlitFramebuffer.xhtml

GL_INVALID_OPERATION is generated if the value of GL_SAMPLE_BUFFERS for the draw buffer is greater than zero.

Best regards/Saludos,
Aldo.

i.MX ProcessorsのトピックRe: GL_INVALID_OPERATION error, when doing multisample framebuffer to multisample EGL Surface blitti

GL_INVALID_OPERATION error, when doing multisample framebuffer to multisample EGL Surface blitting

Re: GL_INVALID_OPERATION error, when doing multisample framebuffer to multisample EGL Surface blitti