Error about QOpenGLShader

[lizhengning]

After build the project, it runs with error: QOpenGLShader::compile(Vertex): ERROR: 0:1: '' : version '150' is not supported ERROR: 0:6: 'smooth' : syntax error: syntax error I think maybe its about the OpenGL version

[tatsy]

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

[lizhengning]

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!!

[tatsy]

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.

[lizhengning]

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

[ultra-sonic]

what hardware are you running on? Sounds like Intel IRIS GPU to me which is total crap for OpenGL development. I also had these issues.

On Wed, 1 Nov 2017 at 08:57 lizhengning notifications@github.com wrote:

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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[lizhengning]

I have a GTX-1080

[tatsy]

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.