WebGPU: Align to vulkan impl - Don't update pInlineConstantData in InitInlineConstantBuffer because it has already been available since InitializeResources.

Author: hzqst

Graphics/GraphicsEngineWebGPU/include/ShaderResourceCacheWebGPU.hpp

@@ -96,7 +96,7 @@ class ShaderResourceCacheWebGPU : public ShaderResourceCacheBase
 /*16 */ Uint64                       BufferBaseOffset = 0;
 /*24 */ Uint64                       BufferRangeSize  = 0;
         // For inline constant buffers only - points to staging data in cache tail
-/*32 */ void*                        pInlineConstantData = nullptr;
+/*32 */ void* const                  pInlineConstantData = nullptr;
         // clang-format on
 
         void SetUniformBuffer(RefCntAutoPtr<IDeviceObject>&& _pBuffer, Uint64 _RangeOffset, Uint64 _RangeSize);

Graphics/GraphicsEngineWebGPU/src/ShaderResourceCacheWebGPU.cpp

@@ -618,8 +618,8 @@ void ShaderResourceCacheWebGPU::InitInlineConstantBuffer(Uint32         BindGrou
     VERIFY_EXPR(Res.Type == BindGroupEntryType::UniformBuffer ||
                 Res.Type == BindGroupEntryType::UniformBufferDynamic);
 
-    // Set the pInlineConstantData pointer to point into the staging area
-    Res.pInlineConstantData = m_pInlineConstantData + InlineConstantOffset;
+    // Inline constant staging pointer must be initialized in InitializeResources().
+    VERIFY_EXPR(Res.pInlineConstantData == static_cast<void*>(m_pInlineConstantData + InlineConstantOffset));
 
     // Bind the emulation buffer as a uniform buffer
     // Use full buffer size (NumConstants * sizeof(Uint32))