FFmpeg
Data Fields
AVVulkanDeviceContext Struct Reference

Main Vulkan context, allocated as AVHWDeviceContext.hwctx. More...

#include <hwcontext_vulkan.h>

Data Fields

const VkAllocationCallbacks * alloc
 Custom memory allocator, else NULL. More...
 
VkInstance inst
 Vulkan instance. More...
 
VkPhysicalDevice phys_dev
 Physical device. More...
 
VkDevice act_dev
 Active device. More...
 
int queue_family_index
 Queue family index for graphics. More...
 
int nb_graphics_queues
 
int queue_family_tx_index
 Queue family index to use for transfer operations, and the amount of queues enabled. More...
 
int nb_tx_queues
 
int queue_family_comp_index
 Queue family index for compute ops, and the amount of queues enabled. More...
 
int nb_comp_queues
 
const char *const * enabled_inst_extensions
 Enabled instance extensions. More...
 
int nb_enabled_inst_extensions
 
const char *const * enabled_dev_extensions
 Enabled device extensions. More...
 
int nb_enabled_dev_extensions
 
VkPhysicalDeviceFeatures2 device_features
 This structure should be set to the set of features that present and enabled during device creation. More...
 

Detailed Description

Main Vulkan context, allocated as AVHWDeviceContext.hwctx.

All of these can be set before init to change what the context uses

Definition at line 39 of file hwcontext_vulkan.h.

Field Documentation

const VkAllocationCallbacks* AVVulkanDeviceContext::alloc
VkInstance AVVulkanDeviceContext::inst

Vulkan instance.

Must be at least version 1.1.

Definition at line 47 of file hwcontext_vulkan.h.

Referenced by create_instance(), find_device(), vulkan_device_free(), and vulkan_map_frame_to_mem().

VkPhysicalDevice AVVulkanDeviceContext::phys_dev
VkDevice AVVulkanDeviceContext::act_dev
int AVVulkanDeviceContext::queue_family_index

Queue family index for graphics.

Note
av_hwdevice_create() will set all 3 queue indices if unset If there is no dedicated queue for compute or transfer operations, they will be set to the graphics queue index which can handle both. nb_graphics_queues indicates how many queues were enabled for the graphics queue (must be at least 1)

Definition at line 64 of file hwcontext_vulkan.h.

Referenced by search_queue_families(), and vulkan_device_init().

int AVVulkanDeviceContext::nb_graphics_queues

Definition at line 65 of file hwcontext_vulkan.h.

Referenced by search_queue_families().

int AVVulkanDeviceContext::queue_family_tx_index

Queue family index to use for transfer operations, and the amount of queues enabled.

In case there is no dedicated transfer queue, nb_tx_queues must be 0 and queue_family_tx_index must be the same as either the graphics queue or the compute queue, if available.

Definition at line 72 of file hwcontext_vulkan.h.

Referenced by search_queue_families(), vulkan_device_init(), and vulkan_frames_init().

int AVVulkanDeviceContext::nb_tx_queues

Definition at line 73 of file hwcontext_vulkan.h.

Referenced by search_queue_families().

int AVVulkanDeviceContext::queue_family_comp_index

Queue family index for compute ops, and the amount of queues enabled.

In case there are no dedicated compute queues, nb_comp_queues must be 0 and its queue family index must be set to the graphics queue.

Definition at line 79 of file hwcontext_vulkan.h.

Referenced by init_filter(), search_queue_families(), vulkan_device_init(), and vulkan_frames_init().

int AVVulkanDeviceContext::nb_comp_queues

Definition at line 80 of file hwcontext_vulkan.h.

Referenced by search_queue_families().

const char* const* AVVulkanDeviceContext::enabled_inst_extensions

Enabled instance extensions.

If supplying your own device context, set this to an array of strings, with each entry containing the specified Vulkan extension string to enable. Duplicates are possible and accepted. If no extensions are enabled, set these fields to NULL, and 0 respectively.

Definition at line 88 of file hwcontext_vulkan.h.

Referenced by create_instance(), and vulkan_device_free().

int AVVulkanDeviceContext::nb_enabled_inst_extensions

Definition at line 89 of file hwcontext_vulkan.h.

Referenced by create_instance(), and vulkan_device_free().

const char* const* AVVulkanDeviceContext::enabled_dev_extensions

Enabled device extensions.

By default, VK_KHR_external_memory_fd, VK_EXT_external_memory_dma_buf, VK_EXT_image_drm_format_modifier, VK_KHR_external_semaphore_fd and VK_EXT_external_memory_host are enabled if found. If supplying your own device context, these fields takes the same format as the above fields, with the same conditions that duplicates are possible and accepted, and that NULL and 0 respectively means no extensions are enabled.

Definition at line 98 of file hwcontext_vulkan.h.

Referenced by vulkan_device_create_internal(), vulkan_device_free(), and vulkan_device_init().

int AVVulkanDeviceContext::nb_enabled_dev_extensions
VkPhysicalDeviceFeatures2 AVVulkanDeviceContext::device_features

This structure should be set to the set of features that present and enabled during device creation.

When a device is created by FFmpeg, it will default to enabling all that are present of the shaderImageGatherExtended, fragmentStoresAndAtomics, shaderInt64 and vertexPipelineStoresAndAtomics features.

Definition at line 106 of file hwcontext_vulkan.h.

Referenced by vulkan_device_create_internal().


The documentation for this struct was generated from the following file: