Method updateInputLayout

GPCS4/Graphics/Gnm/GnmCommandBufferDraw.cpp:806–858

	}

	void GnmCommandBufferDraw::updateInputLayout(
		gcn::VertexInputSemanticTable& semantic,
		const uint32_t*                vertexTable,
		uint32_t                       bufferCount)
	{
		bool singleBinding = (bufferCount == 1);

		std::array<VltVertexAttribute, kMaxVertexBufferCount> attributes;
		std::array<VltVertexBinding, kMaxVertexBufferCount>   bindings;

		size_t   firstAttributeOffset = 0;
		uint32_t semanticCount        = semantic.size();
		for (uint32_t i = 0; i != semanticCount; ++i)
		{
			auto&    sema           = semantic[i];
			uint32_t offsetInDwords = sema.m_semantic * ShaderConstantDwordSize::kDwordSizeVertexBuffer;
			// We need to trust format info in V#, not instructions in fetch shader.
			// From GPU ISA:
			// The number of bytes loaded is determined solely by sV#.dfmt,
			// even if the instruction op count does not match.
			const Buffer* vsharp = reinterpret_cast<const Buffer*>(vertexTable + offsetInDwords);

			if (firstAttributeOffset == 0)
			{
				firstAttributeOffset = reinterpret_cast<size_t>(vsharp->getBaseAddress());
			}

			LOG_ASSERT(sema.m_semantic == i, "semantic index is not equal to table index.");

			// Attributes
			attributes[i].location = sema.m_semantic;
			attributes[i].binding  = singleBinding ? 0 : sema.m_semantic;
			attributes[i].format   = cvt::convertDataFormat(vsharp->getDataFormat());
			attributes[i].offset   = singleBinding
										 ? reinterpret_cast<size_t>(vsharp->getBaseAddress()) - firstAttributeOffset
										 : 0;

			// Bindings
			bindings[i].binding   = sema.m_semantic;
			bindings[i].fetchRate = 0;
			bindings[i].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;

			// Fix element count
			sema.m_sizeInElements = std::min(static_cast<uint32_t>(sema.m_sizeInElements),
											 vsharp->getDataFormat().getNumComponents());
		}

		m_context->setInputLayout(
			semanticCount,
			attributes.data(),
			singleBinding ? 1 : semanticCount,
			bindings.data());
	}

	void GnmCommandBufferDraw::updateIndexBuffer(
		const void* indexAddr,