ac/nir: fix lds store for patch outputs.

This wasn't calculating the correct value, this along with
a nir patch fixes a regression in:
dEQP-VK.tessellation.shader_input_output.barrier

Fixes: 043d14db30a (ac/nir: don't write tcs outputs to LDS that aren't read back.)
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 69d7bea..bd5748d 100644 (file)
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -2803,7 +2803,7 @@ store_tcs_output(struct nir_to_llvm_context *ctx,
        bool store_lds = true;
 
        if (instr->variables[0]->var->data.patch) {
-               if (!(ctx->tcs_patch_outputs_read & (1U << instr->variables[0]->var->data.location)))
+               if (!(ctx->tcs_patch_outputs_read & (1U << (instr->variables[0]->var->data.location - VARYING_SLOT_PATCH0))))
                        store_lds = false;
        } else {
                if (!(ctx->tcs_outputs_read & (1ULL << instr->variables[0]->var->data.location)))