Improve DescriptorPool creation.

Remove the use of Physical Device limits for setting the maximum number of resource descriptor types available for the DescriptorPool used in the demo. This was incorrect usage of Vulkan.

examples/Vulkan/PostProcessing/VulkanPostProcessing.cpp

@@ -3778,14 +3778,11 @@ pvr::Result VulkanPostProcessing::initView()
 		pvrvk::CommandPoolCreateInfo(_deviceResources->queues[0]->getFamilyIndex(), pvrvk::CommandPoolCreateFlags::e_RESET_COMMAND_BUFFER_BIT));
 
 	// This demo application makes use of quite a large number of Images and Buffers and therefore we're making possible for the descriptor pool to allocate descriptors with various limits.maxDescriptorSet*
-	_deviceResources->descriptorPool =
-		_deviceResources->device->createDescriptorPool(pvrvk::DescriptorPoolCreateInfo()
-														   .setMaxDescriptorSets(125)
-														   .addDescriptorInfo(pvrvk::DescriptorType::e_COMBINED_IMAGE_SAMPLER,
-															   _deviceResources->device->getPhysicalDevice()->getProperties().getLimits().getMaxDescriptorSetSampledImages())
-														   .addDescriptorInfo(pvrvk::DescriptorType::e_STORAGE_IMAGE, 20)
-														   .addDescriptorInfo(pvrvk::DescriptorType::e_UNIFORM_BUFFER,
-															   _deviceResources->device->getPhysicalDevice()->getProperties().getLimits().getMaxDescriptorSetUniformBuffers()));
+		_deviceResources->descriptorPool = _deviceResources->device->createDescriptorPool(pvrvk::DescriptorPoolCreateInfo()
+												      .setMaxDescriptorSets(150)
+												      .addDescriptorInfo(pvrvk::DescriptorType::e_COMBINED_IMAGE_SAMPLER, 200)
+												      .addDescriptorInfo(pvrvk::DescriptorType::e_STORAGE_IMAGE, 20)
+												      .addDescriptorInfo(pvrvk::DescriptorType::e_UNIFORM_BUFFER, 200));
 
 	// create the utility commandbuffer which will be used for image layout transitions and buffer/image uploads.
 	_deviceResources->utilityCommandBuffer = _deviceResources->commandPool->allocateCommandBuffer();