Fill buffer fix

src/Vulkan/VkBuffer.cpp

@@ -93,9 +93,18 @@ void Buffer::copyTo(Buffer* dstBuffer, const VkBufferCopy& pRegion) const
 
 void Buffer::fill(VkDeviceSize dstOffset, VkDeviceSize fillSize, uint32_t data)
 {
-	ASSERT((fillSize + dstOffset) <= size);
+	size_t bytes = (fillSize == VK_WHOLE_SIZE) ? (size - dstOffset) : fillSize;
 
-	memset(getOffsetPointer(dstOffset), data, fillSize);
+	ASSERT((bytes + dstOffset) <= size);
+
+	uint32_t* memToWrite = static_cast<uint32_t*>(getOffsetPointer(dstOffset));
+
+	// Vulkan 1.1 spec: "If VK_WHOLE_SIZE is used and the remaining size of the buffer is
+	//                   not a multiple of 4, then the nearest smaller multiple is used."
+	for(; bytes >= 4; bytes -= 4, memToWrite++)
+	{
+		*memToWrite = data;
+	}
 }
 
 void Buffer::update(VkDeviceSize dstOffset, VkDeviceSize dataSize, const void* pData)