On Wed, Aug 05, 2015 at 11:13:46AM +0300, Mika Kuoppala wrote: > Ben Widawsky <[email protected]> writes: > > > On Fri, Jul 31, 2015 at 04:27:07PM +0100, Arun Siluvery wrote: > >> A programming restriction exists for this instruction, atleast one > >> component > >> of one valid vertex element must be enabled. > >> > >> Cc: Ben Widawsky <[email protected]> > >> Cc: Chris Wilson <[email protected]> > >> Signed-off-by: Arun Siluvery <[email protected]> > >> --- > >> tools/null_state_gen/intel_renderstate_gen9.c | 7 ++++++- > >> 1 file changed, 6 insertions(+), 1 deletion(-) > >> > >> diff --git a/tools/null_state_gen/intel_renderstate_gen9.c > >> b/tools/null_state_gen/intel_renderstate_gen9.c > >> index 6f808f8..b3766ea 100644 > >> --- a/tools/null_state_gen/intel_renderstate_gen9.c > >> +++ b/tools/null_state_gen/intel_renderstate_gen9.c > >> @@ -440,7 +440,12 @@ int gen9_setup_null_render_state(struct > >> intel_batchbuffer *batch) > >> /* Vertex buffers */ > >> gen8_emit_vertex_buffers(batch); > >> gen8_emit_vertex_elements(batch); > >> - OUT_CMD(GEN9_3DSTATE_COMPONENT_PACKING, 5); > >> + > >> + OUT_BATCH(GEN9_3DSTATE_COMPONENT_PACKING | 3); > >> + OUT_BATCH(1); > >> + OUT_BATCH(0); > >> + OUT_BATCH(0); > >> + OUT_BATCH(0); > >> > >> OUT_BATCH(GEN6_3DSTATE_VF_STATISTICS | 1 /* Enable */); > >> > > > > Like I said on IRC, I don't think this does anything unless you set bit 9 of > > 3DSTATE_VF.0. Also, I believe you should be setting 0xf, not 1 since you'd > > want > > to use all 4 components. > > > > So I'm not really sure what we're aiming to do. If you make it 0xf, and add > > a > > comment about how this command doesn't do anything because we're not > > setting up > > 3DSTATE_VF packing, it's: > > Reviewed-by: Ben Widawsky <[email protected]> > > > > I'm still more in favor of dropping the command altogether, that too would > > be: > > Reviewed-by: Ben Widawsky <[email protected]> > > We are trying here just to satisfy the minimum requirements the bspec > states. >
Right, except I am saying at least set minimal state which makes sense. Packing 1 component of the vertex element makes little sense (though doing this at all makes even less sense). > The bspec also states that with gen9+, the 3d pipeline state > doesn't need to be initialized. We should seek confirmation > about this and if it is so, remove the null state for gen9+. > That would be super terrific. > -Mika > > > > > -- > > Ben Widawsky, Intel Open Source Technology Center > > _______________________________________________ > > Intel-gfx mailing list > > [email protected] > > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ben Widawsky, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
