PhysicalDevice class
! PhysicalDevice is a wrapper around a VkPhysicalDevice object, which is itself merely a handle representing a Vulkan-compatible hardware device in a user's system.
Contents
This class stores the relevant VkPhysicalDeviceProperties, VkPhysicalDeviceFeatures, and VkPhysicalDeviceMemoryProperties that can be freely queried from anywhere in the program. This can/should be used to check for limits on things like texture and buffer size, supported memory types, supported rendering modes, and supported texture types like cubemaps.
Constructors, destructors, conversion operators
- PhysicalDevice(const VkInstance& instance_handle)
- Automated setup - uses the given instance handle to find the "best" available GPU on a system.
Public functions
- auto GetMemoryTypeIdx(const uint32_t& type_bitfield, const VkMemoryPropertyFlags& property_flags, VkBool32* memory_type_found = nullptr) const -> uint32_t noexcept
- ! Attempts to find the hardware-appropriate index of a memory type that meets the flags given.
- auto GetQueueFamilyIndex(const VkQueueFlagBits& bitfield) const -> uint32_t noexcept
- ! Attempts to find a Queue family that supports the full bitfield given: this can be multiple types, so graphics + compute options or compute + transfer bitfields can be passed to the method.
Function documentation
vpr::
Automated setup - uses the given instance handle to find the "best" available GPU on a system.
This will prefer dedicated cards first, and uses some other parameters to "score" devices from there.
uint32_t vpr::
! Attempts to find the hardware-appropriate index of a memory type that meets the flags given.
| Parameters | |
|---|---|
| type_bitfield | - the memoryTypeBits field of a VkMemoryRequirements struct, retrieved from a vkGetImageMemoryRequirements/vkGetBufferMemoryRequirements call. |
| property_flags | - the type of memory requested by the user, commonly device-local or host-coherent memory. |
| memory_type_found | |
| Returns | Index of the requested memory type on success, std::numeric_limits<uint32_t>::max() on failure. |
uint32_t vpr::
! Attempts to find a Queue family that supports the full bitfield given: this can be multiple types, so graphics + compute options or compute + transfer bitfields can be passed to the method.
| Returns | Index of the queue meeting all of the flags specified, or std::numeric_limits<uint32_t>::max() on failure. |
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