gfx:Add callback to IPipelineCreationAPIDispatcher (#3556)

* gfx:Add callback to IPipelineCreationAPIDispatcher

Add the callback to IPipelineCreationAPIDispatcher in Vulkan backend
in slang-gfx lib.

* gfx:add uuid for vulkan pipeline dispatcher

Add a define of SLANG_UUID_IVulkanPipelineCreationAPIDispatcher
for Vulkan specific IPipelineCreationAPIDispatcher such that
libgfx.so can have special handle to Vulkan pipeline dispatcher without
break binary compatibility.

In the RendererBase::initialize call, we will provide this new UUID when
the DeviceType is Vulkan.

* gfx: add new variable to GfxGUID

Add new variable to GfxGUID IID_IVulkanPipelineCreationAPIDispatcher
with initialization of SLANG_UUID_IVulkanPipelineCreationAPIDispatcher
to make the implementation aligned with existing
GfxGUID::IID_IPipelineCreationAPIDispatcher.

---------

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 13 insertions, 3 deletions

diff --git a/tools/gfx/renderer-shared.cpp b/tools/gfx/renderer-shared.cpp
index 5111edee5..54311dd47 100644
--- a/tools/gfx/renderer-shared.cpp
+++ b/tools/gfx/renderer-shared.cpp
@@ -46,6 +46,7 @@ const Slang::Guid GfxGUID::IID_IAccelerationStructure = SLANG_UUID_IAcceleration
 const Slang::Guid GfxGUID::IID_IFence = SLANG_UUID_IFence;
 const Slang::Guid GfxGUID::IID_IShaderTable = SLANG_UUID_IShaderTable;
 const Slang::Guid GfxGUID::IID_IPipelineCreationAPIDispatcher = SLANG_UUID_IPipelineCreationAPIDispatcher;
+const Slang::Guid GfxGUID::IID_IVulkanPipelineCreationAPIDispatcher = SLANG_UUID_IVulkanPipelineCreationAPIDispatcher;
 const Slang::Guid GfxGUID::IID_ITransientResourceHeapD3D12 = SLANG_UUID_ITransientResourceHeapD3D12;
 
 
@@ -397,9 +398,18 @@ SLANG_NO_THROW Result SLANG_MCALL RendererBase::initialize(const Desc& desc)
 
     if (desc.apiCommandDispatcher)
     {
-        desc.apiCommandDispatcher->queryInterface(
-            GfxGUID::IID_IPipelineCreationAPIDispatcher,
-            (void**)m_pipelineCreationAPIDispatcher.writeRef());
+        if (desc.deviceType == DeviceType::Vulkan)
+        {
+            desc.apiCommandDispatcher->queryInterface(
+                GfxGUID::IID_IVulkanPipelineCreationAPIDispatcher,
+                (void**)m_pipelineCreationAPIDispatcher.writeRef());
+        }
+        else
+        {
+            desc.apiCommandDispatcher->queryInterface(
+                GfxGUID::IID_IPipelineCreationAPIDispatcher,
+                (void**)m_pipelineCreationAPIDispatcher.writeRef());
+        }
     }
     return SLANG_OK;
 }