Assert reserved binding entries aren't accessed

src/Pipeline/SpirvShaderMemory.cpp

@@ -387,6 +387,7 @@ SIMD::Pointer SpirvShader::GetPointerToData(Object::ID id, Int arrayIndex, EmitS
 			const auto &d = descriptorDecorations.at(id);
 			ASSERT(d.DescriptorSet >= 0 && d.DescriptorSet < vk::MAX_BOUND_DESCRIPTOR_SETS);
 			ASSERT(d.Binding >= 0);
+			ASSERT(routine->pipelineLayout->getDescriptorCount(d.DescriptorSet, d.Binding) != 0);  // "If descriptorCount is zero this binding entry is reserved and the resource must not be accessed from any stage via this binding within any pipeline using the set layout."
 
 			uint32_t bindingOffset = routine->pipelineLayout->getBindingOffset(d.DescriptorSet, d.Binding);
 			uint32_t descriptorSize = routine->pipelineLayout->getDescriptorSize(d.DescriptorSet, d.Binding);

src/Vulkan/VkPipelineLayout.cpp

@@ -44,6 +44,7 @@ PipelineLayout::PipelineLayout(const VkPipelineLayoutCreateInfo *pCreateInfo, vo
 			descriptorSets[i].bindings[j].descriptorType = setLayout->getDescriptorType(j);
 			descriptorSets[i].bindings[j].offset = setLayout->getBindingOffset(j);
 			descriptorSets[i].bindings[j].dynamicOffsetIndex = dynamicOffsetIndex;
+			descriptorSets[i].bindings[j].descriptorCount = setLayout->getDescriptorCount(j);
 
 			if(DescriptorSetLayout::IsDescriptorDynamic(descriptorSets[i].bindings[j].descriptorType))
 			{
@@ -97,6 +98,12 @@ uint32_t PipelineLayout::getDynamicOffsetIndex(uint32_t setNumber, uint32_t bind
 	return descriptorSets[setNumber].bindings[bindingNumber].dynamicOffsetIndex;
 }
 
+uint32_t PipelineLayout::getDescriptorCount(uint32_t setNumber, uint32_t bindingNumber) const
+{
+	ASSERT(setNumber < descriptorSetCount && bindingNumber < descriptorSets[setNumber].bindingCount);
+	return descriptorSets[setNumber].bindings[bindingNumber].descriptorCount;
+}
+
 uint32_t PipelineLayout::getBindingOffset(uint32_t setNumber, uint32_t bindingNumber) const
 {
 	ASSERT(setNumber < descriptorSetCount && bindingNumber < descriptorSets[setNumber].bindingCount);

src/Vulkan/VkPipelineLayout.hpp

@@ -34,7 +34,7 @@ public:
 	// Returns the index into the pipeline's dynamic offsets array for
 	// the given descriptor set and binding number.
 	uint32_t getDynamicOffsetIndex(uint32_t setNumber, uint32_t bindingNumber) const;
-
+	uint32_t getDescriptorCount(uint32_t setNumber, uint32_t bindingNumber) const;
 	uint32_t getBindingOffset(uint32_t setNumber, uint32_t bindingNumber) const;
 	VkDescriptorType getDescriptorType(uint32_t setNumber, uint32_t bindingNumber) const;
 	uint32_t getDescriptorSize(uint32_t setNumber, uint32_t bindingNumber) const;
@@ -49,8 +49,9 @@ private:
 	struct Binding
 	{
 		VkDescriptorType descriptorType;
-		uint32_t offset;              // Offset in bytes in the descriptor set data.
-		uint32_t dynamicOffsetIndex;  // TODO(b/154914395): Debug only.
+		uint32_t offset;  // Offset in bytes in the descriptor set data.
+		uint32_t dynamicOffsetIndex;
+		uint32_t descriptorCount;
 	};
 
 	struct DescriptorSet