From ed14c24bd7fb97dcc6fcab710adccd4ffedbbf91 Mon Sep 17 00:00:00 2001
From: Zheorgyan <52031840+Zheorgyan@users.noreply.github.com>
Date: Thu, 8 Oct 2026 14:43:17 +0200
Subject: [PATCH] test(agc): skip the exec host lanes vertex draw without
 vertex subgroups

---
 .../prx/libSceAgcDriver/Execution/include/VulkanDevice.hpp    | 1 +
 core/libs/prx/libSceAgcDriver/Execution/src/VulkanDevice.cpp  | 4 ++++
 .../prx/libSceAgcDriver/tests/execution/ExecHostLanes.cpp     | 2 ++
 3 files changed, 7 insertions(+)

diff --git a/core/libs/prx/libSceAgcDriver/Execution/include/VulkanDevice.hpp b/core/libs/prx/libSceAgcDriver/Execution/include/VulkanDevice.hpp
index ca9536125..da3315287 100644
--- a/core/libs/prx/libSceAgcDriver/Execution/include/VulkanDevice.hpp
+++ b/core/libs/prx/libSceAgcDriver/Execution/include/VulkanDevice.hpp
@@ -162,6 +162,7 @@ public:
     bool PrimitiveListRestart() const;
     bool SamplerFilterMinmax() const;
     bool ConservativeRasterization() const;
+    VkShaderStageFlags SubgroupStages() const;
     // A presentation is a few steps so the presenter holds GuestMemory::GpuMutex only while it
     // touches the queue. Presentations are slots (FlipInFlight() + 1, each with its own command
     // buffer, fence, kept resident image and dump buffer): RetirePresents(keep) (no mutex) retires
diff --git a/core/libs/prx/libSceAgcDriver/Execution/src/VulkanDevice.cpp b/core/libs/prx/libSceAgcDriver/Execution/src/VulkanDevice.cpp
index 98f53f726..eaeeab7af 100644
--- a/core/libs/prx/libSceAgcDriver/Execution/src/VulkanDevice.cpp
+++ b/core/libs/prx/libSceAgcDriver/Execution/src/VulkanDevice.cpp
@@ -2450,6 +2450,10 @@ bool VulkanDevice::ConservativeRasterization() const {
     return state->conservativeRasterization;
 }
 
+VkShaderStageFlags VulkanDevice::SubgroupStages() const {
+    return state->subgroup.supportedStages;
+}
+
 Graphics::Context VulkanDevice::graphicsContext() const {
     static const bool noCache = std::getenv("APS5_NO_CONTEXT_CACHE") != nullptr;
     if (state->contextReady && !noCache) return state->context;
diff --git a/core/libs/prx/libSceAgcDriver/tests/execution/ExecHostLanes.cpp b/core/libs/prx/libSceAgcDriver/tests/execution/ExecHostLanes.cpp
index 9d1cbec5b..1978891b9 100644
--- a/core/libs/prx/libSceAgcDriver/tests/execution/ExecHostLanes.cpp
+++ b/core/libs/prx/libSceAgcDriver/tests/execution/ExecHostLanes.cpp
@@ -169,6 +169,8 @@ int main() {
         Check("compute lane", Threads);
         if (device->Target().subgroupSize < 32u) {
             std::printf("vertex draw skipped, subgroup size %u cannot hold a wave32\n", device->Target().subgroupSize);
+        } else if ((device->SubgroupStages() & VK_SHADER_STAGE_VERTEX_BIT) == 0u) {
+            std::puts("vertex draw skipped, the device has no subgroup operations in vertex shaders");
         } else {
             Draw(*device);
             Check("vertex", Vertices);