Is gltestsrc supposed to work ?

[Stuart Axon]

I was playing with this examplehttps://lubosz.wordpress.com/2014/05/27/gstreamer-overlay-opengl-sink-example-in-python-3/comment-page-1/#comment-409


And found that gltestsrc doesn't seem to work for me
On a raspberry pi it is not available.
On my PC, I get the error below.   Is it supposed to work, or has it been deprecated or something ?
$ gst-launch-1.0 -v gltestsrc ! glimagesink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Got context from element 'sink': gst.gl.GLDisplay=context, gst.gl.GLDisplay=(GstGLDisplay)"\(GstGLDisplayX11\)\ gldisplayx11-0";
/GstPipeline:pipeline0/GstGLTestSrc:gltestsrc0.GstPad:src: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLUploadElement:gluploadelement0.GstPad:src: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorConvertElement:glcolorconvertelement0.GstPad:src: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorBalance:glcolorbalance0.GstPad:src: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLImageSink:sink.GstPad:sink: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorBalance:glcolorbalance0.GstPad:sink: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorConvertElement:glcolorconvertelement0.GstPad:sink: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLUploadElement:gluploadelement0.GstPad:sink: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0.GstGhostPad:sink: caps = "video/x-raw\(memory:GLMemory\)\,\ format\=\(string\)RGBA\,\ width\=\(int\)320\,\ height\=\(int\)240\,\ framerate\=\(fraction\)30/1\,\ texture-target\=\(string\)2D"
ERROR: from element /GstPipeline:pipeline0/GstGLTestSrc:gltestsrc0: GL API's not compatible context: opengl3 supported: opengl
Additional debug info:
gstgltestsrc.c(869): gst_gl_test_src_decide_allocation (): /GstPipeline:pipeline0/GstGLTestSrc:gltestsrc0
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLImageSink:sink.GstPad:sink: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorBalance:glcolorbalance0.GstPad:src: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorBalance:glcolorbalance0.GstPad:sink: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorConvertElement:glcolorconvertelement0.GstPad:src: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLColorConvertElement:glcolorconvertelement0.GstPad:sink: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLUploadElement:gluploadelement0.GstPad:src: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0/GstGLUploadElement:gluploadelement0.GstPad:sink: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0.GstGhostPad:sink.GstProxyPad:proxypad0: caps = "NULL"
/GstPipeline:pipeline0/GstGLImageSinkBin:glimagesinkbin0.GstGhostPad:sink: caps = "NULL"
/GstPipeline:pipeline0/GstGLTestSrc:gltestsrc0.GstPad:src: caps = "NULL"
Freeing pipeline ...



 S++
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