Error about QOpenGLShader about lightfield HOT 7 CLOSED

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Check the OpenGL support of your platform.
GLSL v1.5 (and also OpenGL 3.3) is supported by very old hardware (and also by new ones).
So I hardly believe your platform does not support this.

I guess your platform is MacOSX. If so, you need a special care to use OpenGL whose version is higher than 2.0.
The following code helps.
https://github.com/tatsy/qt5-shadow-maps/blob/master/sources/appmain.cpp#L9

from lightfield.

Thanks，everything is ok now, and I load the images from stanford, the screen is black and an info shows: light field texture is binded!!

from lightfield.

Actually, I have not tested this program on MacOSX, so I am not sure about this program correctly works on it.
The typical problem of MacOS is its Letina display. It often causes the problem with OpenGL.
I am sure that the problem can be fixed if all the things are correctly set, but it would be a bit complicated.
So, if you are not an expert of OpenGL on MacOS, I strongly recommend that you first test this program on the other platform.

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followed your suggestion, I run on ubuntu 16.04, and there is still someproblem
QXcbIntegration: Cannot create platform OpenGL context, neither GLX nor EGL are enabled
QOpenGLWidget: Failed to create context

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I have a GTX-1080

from lightfield.

While I have no much time to elaborate this problem, but I guess the image size is another important factor.

Typically, the size of power of 2 is more preferable to the majority of hardware.

I think the memory size of GTX-1080 is enough for this program, but the small memory size of Intel IRIS can be problematic (I am not very sure).

Anyway, I understand your problem and I check it in the near future.
Thank you for your information.

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