multiTextureShaderExample : frag shader not linked.

[kalwalt]

You need to run with GLES2 otherwise with GLES1 you got segfault. Comment out also ofSetWindowShape() and of SetWindowTitle() because are not implemented yet . Also this is a issue. i noticed,also in other examples, that with GLES2 the bitmap stings are a bit weird.
the output in the console is:

[notice] ofGstUtils: selected device: Trust Webcam
[notice] ofGstUtils: selected format: 320x240 video/x-raw-rgb framerate: 30/1
[notice] gstreamer pipeline: v4l2src name=video_source device=/dev/video0 ! video/x-raw-rgb,width=320,height=240 ! ffmpegcolorspace ! appsink name=ofappsink caps="video/x-raw-rgb, depth=24, bpp=24, endianness=4321, red_mask=0xff0000, green_mask=0x00ff00, blue_mask=0x0000ff, alpha_mask=0x000000ff, width=320, height=240"
libdce-x11.c:64: dce_auth_x11 info: attempting to open X11 connection
[notice] bind framebuffer
[notice] allocate texture
[notice] framebuffertexture2d
[notice] bind framebuffer
[notice] allocate texture
[notice] framebuffertexture2d
[error] OpenGL generated error 1281 trying to get the compile status for GL_FRAGMENT_SHADER shader. Does your video card support this?
[error] Trying to link GLSL program, but no shaders created yet
[ofAppEGLWindow::runAppViaInfiniteLoop:notice] ofNotifySetup() complete.

attched also an image below:

[danzeeeman]

@kalwalt any updates?

[kalwalt]

no updates but i will try to solve , also i would re-check most of the examples . could be other issues somewhere in the examples that i don't remember now.

[jvcleave]

I guess the main issue is how to have ofShader fail more elegantly as shaders will only work with GLES2.

Anyone know how Android/iOS is currently handling this?

[kalwalt]

very wierd: i can't get at least the same result above. see my log here : https://gist.github.com/kalwalt/5505535

edit: no my fault... forgot to add the ofGLES2Renderer.... don't read the above comment.
I will try to make some mod now to the shader.