Vulkan.Extensions.VK_EXT_vertex_input_dynamic_state

vkCmdSetVertexInputEXT - Set the vertex input state dynamically for a command buffer

Description

This command sets the vertex input attribute and vertex input binding descriptions state for subsequent drawing commands when drawing using shader objects, or when the graphics pipeline is created with DYNAMIC_STATE_VERTEX_INPUT_EXT set in PipelineDynamicStateCreateInfo::pDynamicStates. Otherwise, this state is specified by the GraphicsPipelineCreateInfo::pVertexInputState values used to create the currently active pipeline.

If drawing using shader objects, or if the bound pipeline state object was also created with the DYNAMIC_STATE_VERTEX_INPUT_BINDING_STRIDE dynamic state enabled, then cmdBindVertexBuffers2 can be used instead of cmdSetVertexInputEXT to dynamically set the stride.

The vertex attribute description for any location in the range [0,PhysicalDeviceLimits::maxVertexInputAttributes) not specified in the pVertexAttributeDescriptions array becomes undefined.

Valid Usage

• Either the vertexInputDynamicState feature or the shaderObject feature or both must be enabled

• vertexBindingDescriptionCount must be less than or equal to PhysicalDeviceLimits::maxVertexInputBindings

• vertexAttributeDescriptionCount must be less than or equal to PhysicalDeviceLimits::maxVertexInputAttributes

• For every binding specified by each element of pVertexAttributeDescriptions, a VertexInputBindingDescription2EXT must exist in pVertexBindingDescriptions with the same value of binding

• All elements of pVertexBindingDescriptions must describe distinct binding numbers

• All elements of pVertexAttributeDescriptions must describe distinct attribute locations

Valid Usage (Implicit)

• commandBuffer must be a valid CommandBuffer handle

• If vertexBindingDescriptionCount is not 0, pVertexBindingDescriptions must be a valid pointer to an array of vertexBindingDescriptionCount valid VertexInputBindingDescription2EXT structures

• If vertexAttributeDescriptionCount is not 0, pVertexAttributeDescriptions must be a valid pointer to an array of vertexAttributeDescriptionCount valid VertexInputAttributeDescription2EXT structures

• commandBuffer must be in the recording state

• The CommandPool that commandBuffer was allocated from must support QUEUE_GRAPHICS_BIT operations

• This command must only be called outside of a video coding scope

Host Synchronization

• Host access to commandBuffer must be externally synchronized

• Host access to the CommandPool that commandBuffer was allocated from must be externally synchronized

Command Properties

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Conditional Rendering

vkCmdSetVertexInputEXT is not affected by conditional rendering

See Also

VK_EXT_shader_object, VK_EXT_vertex_input_dynamic_state, CommandBuffer, VertexInputAttributeDescription2EXT, VertexInputBindingDescription2EXT

VkPhysicalDeviceVertexInputDynamicStateFeaturesEXT - Structure describing whether the dynamic vertex input state can be used

Members

This structure describes the following feature:

Description

If the PhysicalDeviceVertexInputDynamicStateFeaturesEXT structure is included in the pNext chain of the PhysicalDeviceFeatures2 structure passed to getPhysicalDeviceFeatures2, it is filled in to indicate whether each corresponding feature is supported. If the application wishes to use a Device with any features described by PhysicalDeviceVertexInputDynamicStateFeaturesEXT, it must add an instance of the structure, with the desired feature members set to TRUE, to the pNext chain of DeviceCreateInfo when creating the Device.

Structure Chaining

Extends the structures

• DeviceCreateInfo

• PhysicalDeviceFeatures2

See Also

VK_EXT_vertex_input_dynamic_state, Bool32, StructureType

VkVertexInputBindingDescription2EXT - Structure specifying the extended vertex input binding description

Valid Usage

• binding must be less than PhysicalDeviceLimits::maxVertexInputBindings

• stride must be less than or equal to PhysicalDeviceLimits::maxVertexInputBindingStride

• If the vertexAttributeInstanceRateZeroDivisor feature is not enabled, divisor must not be 0

• If the vertexAttributeInstanceRateDivisor feature is not enabled, divisor must be 1

• divisor must be a value between 0 and PhysicalDeviceVertexAttributeDivisorPropertiesEXT::maxVertexAttribDivisor, inclusive

• If divisor is not 1 then inputRate must be of type VERTEX_INPUT_RATE_INSTANCE

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_VERTEX_INPUT_BINDING_DESCRIPTION_2_EXT

• inputRate must be a valid VertexInputRate value

See Also

VK_EXT_shader_object, VK_EXT_vertex_input_dynamic_state, StructureType, VertexInputRate, cmdSetVertexInputEXT

VkVertexInputAttributeDescription2EXT - Structure specifying the extended vertex input attribute description

Valid Usage

• location must be less than PhysicalDeviceLimits::maxVertexInputAttributes

• binding must be less than PhysicalDeviceLimits::maxVertexInputBindings

• offset must be less than or equal to PhysicalDeviceLimits::maxVertexInputAttributeOffset

• The format features of format must contain FORMAT_FEATURE_VERTEX_BUFFER_BIT

• If the VK_KHR_portability_subset extension is enabled, and PhysicalDevicePortabilitySubsetFeaturesKHR::vertexAttributeAccessBeyondStride is FALSE, the sum of offset plus the size of the vertex attribute data described by format must not be greater than stride in the VertexInputBindingDescription2EXT referenced in binding

Valid Usage (Implicit)

• sType must be STRUCTURE_TYPE_VERTEX_INPUT_ATTRIBUTE_DESCRIPTION_2_EXT

• format must be a valid Format value

See Also

VK_EXT_shader_object, VK_EXT_vertex_input_dynamic_state, Format, StructureType, cmdSetVertexInputEXT