<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [IVB/HSW] ogl-samples: gl-320-draw-instanced failure" href="https://bugs.freedesktop.org/show_bug.cgi?id=76391#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [IVB/HSW] ogl-samples: gl-320-draw-instanced failure" href="https://bugs.freedesktop.org/show_bug.cgi?id=76391">bug 76391</a> from <a class="email" href="mailto:kenneth@whitecape.org" title="Kenneth Graunke <kenneth@whitecape.org>"> Kenneth Graunke</a> <pre>Did a bit of digging here: The vertex shader contains code to override the default qualifiers for uniform blocks. layout(std140, column_major) uniform; However, the fragment shader does not. So, when we compile the vertex shader, the uniform blocks get packing set to GLSL_INTERFACE_PACKING_STD140. However, when we compile the fragment shader, they get packing set to GLSL_INTERFACE_PACKING_SHARED. This information is captured in the types, so the two shaders get different glsl_types for the otherwise identical interfaces, and interstage_match() rejects the shaders. Anyway, that's what's going on. I haven't looked at specs to determine whether we have a bug, or the demo has a bug.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>