From 55988df821de8c6bbe22ace451efa1337cdc1680 Mon Sep 17 00:00:00 2001
From: Mike <mango@live.cn>
Date: Tue, 23 Apr 2024 18:08:50 +0800
Subject: [PATCH] add error messages for CUDA/CPU backends with mega-wave
integrator (#28)
---
src/integrators/megawave.cpp | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/integrators/megawave.cpp b/src/integrators/megawave.cpp
index e07de707..4e7fb8cb 100644
--- a/src/integrators/megawave.cpp
+++ b/src/integrators/megawave.cpp
@@ -266,6 +266,13 @@ class MegakernelWaveFrontInstance final : public ProgressiveIntegrator::Instance
};
luisa::unique_ptr<Integrator::Instance> MegakernelWaveFront::build(Pipeline &pipeline, CommandBuffer &command_buffer) const noexcept {
+ if (auto backend = luisa::string{pipeline.device().backend_name()}; backend == "cuda" || backend == "cpu") {
+ for (auto &c : backend) { c = static_cast<char>(std::toupper(c)); }
+ LUISA_ERROR_WITH_LOCATION("The {} backend does not support the 'meagwave' integrator: "
+ "thread-block synchronization is not supported inside "
+ "ray-tracing kernels on this backend. "
+ "You can use 'megapath' or 'wavepath' instead.", backend);
+ }
return luisa::make_unique<MegakernelWaveFrontInstance>(pipeline, command_buffer, this);
}