radv: Use 0 for the layer id if the vertex shader does not export it.

To use when we have e.g. input attachments, but there is no layer
export in the previous shader and hence no layered rendering.

Reviewed-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/amd/vulkan/radv_pipeline.c b/src/amd/vulkan/radv_pipeline.c
index 23b9e72f92ac0a9b2fb35b958aa7eb401bb3e2bd..477abfe491582930b0700bbb33ebe5e0a88c73fc 100644 (file)
--- a/src/amd/vulkan/radv_pipeline.c
+++ b/src/amd/vulkan/radv_pipeline.c
@@ -2119,10 +2119,11 @@ static void calculate_ps_inputs(struct radv_pipeline *pipeline)
 
        if (ps->info.fs.layer_input) {
                unsigned vs_offset = outinfo->vs_output_param_offset[VARYING_SLOT_LAYER];
-               if (vs_offset != AC_EXP_PARAM_UNDEFINED) {
+               if (vs_offset != AC_EXP_PARAM_UNDEFINED)
                        pipeline->graphics.ps_input_cntl[ps_offset] = offset_to_ps_input(vs_offset, true);
-                       ++ps_offset;
-               }
+               else
+                       pipeline->graphics.ps_input_cntl[ps_offset] = offset_to_ps_input(AC_EXP_PARAM_DEFAULT_VAL_0000, true);
+               ++ps_offset;
        }
 
        if (ps->info.fs.has_pcoord) {