radeonsi: avoid sending GS_EMIT in shaders without outputs
Fixes GPU hangs. Cc: 18.1 18.2 <mesa-stable@lists.freedesktop.org> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107857 Signed-off-by: Józef Kucia <joseph.kucia@gmail.com> Signed-off-by: Marek Olšák <marek.olsak@amd.com>
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@ -4326,9 +4326,12 @@ static void si_llvm_emit_vertex(struct ac_shader_abi *abi,
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gs_next_vertex = LLVMBuildAdd(ctx->ac.builder, gs_next_vertex, ctx->i32_1, "");
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LLVMBuildStore(ctx->ac.builder, gs_next_vertex, ctx->gs_next_vertex[stream]);
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/* Signal vertex emission */
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/* Signal vertex emission if vertex data was written. */
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if (offset) {
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ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_EMIT | AC_SENDMSG_GS | (stream << 8),
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si_get_gs_wave_id(ctx));
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}
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if (!use_kill)
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lp_build_endif(&if_state);
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}
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