C Specification

If the bound graphics pipeline state was created with the VK_DYNAMIC_STATE_VIEWPORT_WITH_COUNT_EXT dynamic state enabled then the viewport count and viewport transformation parameters are set dynamically by calling:

// Provided by VK_EXT_extended_dynamic_state
void vkCmdSetViewportWithCountEXT(
    VkCommandBuffer                             commandBuffer,
    uint32_t                                    viewportCount,
    const VkViewport*                           pViewports);

Parameters

  • commandBuffer is the command buffer into which the command will be recorded.

  • viewportCount specifies the viewport count.

  • pViewports specifies the viewports to use for drawing.

Description

Valid Usage
  • VUID-vkCmdSetViewportWithCountEXT-None-03393
    The extendedDynamicState feature must be enabled

  • VUID-vkCmdSetViewportWithCountEXT-viewportCount-03394
    viewportCount must be between 1 and VkPhysicalDeviceLimits::maxViewports, inclusive

  • VUID-vkCmdSetViewportWithCountEXT-viewportCount-03395
    If the multiple viewports feature is not enabled, viewportCount must be 1

Valid Usage (Implicit)
  • VUID-vkCmdSetViewportWithCountEXT-commandBuffer-parameter
    commandBuffer must be a valid VkCommandBuffer handle

  • VUID-vkCmdSetViewportWithCountEXT-pViewports-parameter
    pViewports must be a valid pointer to an array of viewportCount valid VkViewport structures

  • VUID-vkCmdSetViewportWithCountEXT-commandBuffer-recording
    commandBuffer must be in the recording state

  • VUID-vkCmdSetViewportWithCountEXT-commandBuffer-cmdpool
    The VkCommandPool that commandBuffer was allocated from must support graphics operations

  • VUID-vkCmdSetViewportWithCountEXT-viewportCount-arraylength
    viewportCount must be greater than 0

Host Synchronization
  • Host access to commandBuffer must be externally synchronized

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

Command Properties
Command Buffer Levels Render Pass Scope Supported Queue Types Pipeline Type

Primary
Secondary

Both

Graphics

See Also

Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

Copyright (c) 2014-2020 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0