I have a question on behalf of a coworker. He's using Ubuntu 14.04
(Mesa 10.1.3, kernel 3.13.0) on a Haswell system. But glxinfo does not
list support for GL_ARB_transform_feedback[23]. It does list
ARB_conservative_depth.
According to the driver code (from master, 10.1.3 lacks ARB_texture_view):
if (brw->gen >= 7) {
ctx->Extensions.ARB_conservative_depth = true;
ctx->Extensions.ARB_texture_view = true;
if (can_do_pipelined_register_writes(brw)) {
ctx->Extensions.ARB_transform_feedback2 = true;
ctx->Extensions.ARB_transform_feedback3 = true;
ctx->Extensions.ARB_transform_feedback_instanced = true;
ctx->Extensions.ARB_draw_indirect = true;
}
this seems to indicate that can_do_pipelined_register_writes() is
failing. The comments on that function say it can fail if the kernel
driver isn't new enough. So I'm guessing this is a kernel module issue.
Can anyone confirm this behavior with Ubuntu 14.04?
-Brian
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