4 Replies Latest reply: Aug 8, 2012 12:23 PM by woodstock42 RSS

    OpenGL shader compiler bug with GL_ARB_explicit_attrib_location


      Dear Support Team,


      I don't know where to report bugs in Intel graphics drivers, so I try it here.


      The GLSL shader compiler in the current driver for the HD 4000 graphics does not support explicit shader input locations in GLSL version 3.30. As a workaround it is possible to enable the extension GL_ARB_explicit_attrib_location, but this extension was added to GLSL and it should be implicitly enabled when #version 330 is used.


      Thanks in advance,



      Output from my log file:


      OpenGL version: 3.3 ("3.3.0 - Build")

      OpenGL shading language version: 3.3 ("3.30 - Intel Build")

      OpenGL vendor: "Intel"

      OpenGL renderer: "Intel(R) HD Graphics 4000"

      OpenGL context: core profile, forward compatible



      #version 330

      layout(location = 0) out vec4 fragment_color;

      smooth in vec4 smooth_color;


      void main()


        fragment_color = smooth_color;



      Error: 0:2: 'GL_ARB_explicit_attrib_location' : extension is disabled