i965/vec4: Set VERT_BIT_EDGEFLAG based on the VUE map

We also add a nice little comment to make it more clear exactly what
happens with the edge flag copy.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand 2017-05-09 12:34:10 -07:00
parent ca4d192802
commit d2fe804d18
2 changed files with 11 additions and 4 deletions

View File

@ -2778,6 +2778,17 @@ brw_compile_vs(const struct brw_compiler *compiler, void *log_data,
const unsigned *assembly = NULL;
if (prog_data->base.vue_map.varying_to_slot[VARYING_SLOT_EDGE] != -1) {
/* If the output VUE map contains VARYING_SLOT_EDGE then we need to copy
* the edge flag from VERT_ATTRIB_EDGEFLAG. This will be done
* automatically by brw_vec4_visitor::emit_urb_slot but we need to
* ensure that prog_data->inputs_read is accurate.
*/
assert(!is_scalar);
assert(key->copy_edgeflag);
prog_data->inputs_read |= VERT_BIT_EDGEFLAG;
}
prog_data->base.clip_distance_mask =
((1 << shader->info.clip_distance_array_size) - 1);
prog_data->base.cull_distance_mask =

View File

@ -213,10 +213,6 @@ brw_codegen_vs_prog(struct brw_context *brw,
prog_data.inputs_read = vp->program.info.inputs_read;
prog_data.double_inputs_read = vp->program.info.double_inputs_read;
if (key->copy_edgeflag) {
prog_data.inputs_read |= VERT_BIT_EDGEFLAG;
}
brw_compute_vue_map(devinfo,
&prog_data.base.vue_map, outputs_written,
vp->program.nir->info.separate_shader);