Hi, A long time back in May, I made a very small patch to the GLSL pre-processor to define the symbol GL_OES_standard_derivatives (as 1), if the extension is supported. Without that patch, shaders that detect if they can use dFdx, dFdy and fwidth via #ifdef's do not function correctly (namely they take the path that does not used derivatives). The patch was infinitesimally small, a linky to the original post is here:
http://lists.freedesktop.org/archives/mesa-dev/2014-May/059689.html I would love to see some comments, or if it is fine, a push to Mesa. -Kevin Rogovin _______________________________________________ mesa-dev mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-dev
