From 64d49d426b9c334f4cb620e6bf4ff1dcecc14574 Mon Sep 17 00:00:00 2001
From: assiduous <assiduous@diligentgraphics.com>
Date: Sat, 19 Dec 2020 09:54:34 -0800
Subject: Fixed ray tracing recursion depth in Vulkan

---
 Graphics/GraphicsEngineVulkan/src/PipelineStateVkImpl.cpp | 2 +-
 Graphics/GraphicsEngineVulkan/src/RenderDeviceVkImpl.cpp  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'Graphics/GraphicsEngineVulkan')

diff --git a/Graphics/GraphicsEngineVulkan/src/PipelineStateVkImpl.cpp b/Graphics/GraphicsEngineVulkan/src/PipelineStateVkImpl.cpp
index 32365f2f..263e6cb3 100644
--- a/Graphics/GraphicsEngineVulkan/src/PipelineStateVkImpl.cpp
+++ b/Graphics/GraphicsEngineVulkan/src/PipelineStateVkImpl.cpp
@@ -360,7 +360,7 @@ static void CreateRayTracingPipeline(RenderDeviceVkImpl*
     PipelineCI.pStages                      = Stages.data();
     PipelineCI.groupCount                   = static_cast<Uint32>(ShaderGroups.size());
     PipelineCI.pGroups                      = ShaderGroups.data();
-    PipelineCI.maxPipelineRayRecursionDepth = std::max(1u, Uint32{RayTracingPipeline.MaxRecursionDepth}) - 1; // for compatibility with D3D12, zero means only one ray tracing depth.
+    PipelineCI.maxPipelineRayRecursionDepth = RayTracingPipeline.MaxRecursionDepth;
     PipelineCI.pLibraryInfo                 = nullptr;
     PipelineCI.pLibraryInterface            = nullptr;
     PipelineCI.pDynamicState                = nullptr;
diff --git a/Graphics/GraphicsEngineVulkan/src/RenderDeviceVkImpl.cpp b/Graphics/GraphicsEngineVulkan/src/RenderDeviceVkImpl.cpp
index 44bc0eb8..4a82921d 100644
--- a/Graphics/GraphicsEngineVulkan/src/RenderDeviceVkImpl.cpp
+++ b/Graphics/GraphicsEngineVulkan/src/RenderDeviceVkImpl.cpp
@@ -166,7 +166,7 @@ RenderDeviceVkImpl::RenderDeviceVkImpl(IReferenceCounters*
         m_PhysicalDevice->GetExtProperties().RayTracingPipeline.maxShaderGroupStride,
         m_PhysicalDevice->GetExtProperties().RayTracingPipeline.shaderGroupBaseAlignment,
         m_PhysicalDevice->GetExtProperties().MeshShader.maxDrawMeshTasksCount,
-        m_PhysicalDevice->GetExtProperties().RayTracingPipeline.maxRayRecursionDepth + 1, // for compatibility with D3D12
+        m_PhysicalDevice->GetExtProperties().RayTracingPipeline.maxRayRecursionDepth,
         m_PhysicalDevice->GetExtProperties().RayTracingPipeline.maxRayDispatchInvocationCount
     }
 // clang-format on
-- 
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