VK_IMG_relaxed_line_rasterization

Other Extension Metadata

Last Modified Date

2023-10-22

IP Status

No known IP claims.

Contributors

• James Fitzpatrick, Imagination
• Andrew Garrard, Imagination
• Alex Walters, Imagination

Description

OpenGL specifies that implementations should rasterize lines using the diamond exit rule (a slightly modified version of Bresenham’s algorithm). To implement OpenGL some implementations have a device-level compatibility mode to rasterize lines according to the OpenGL specification.

This extension allows OpenGL emulation layers to enable the OpenGL compatible line rasterization mode of such implementations.

New Structures

• Extending VkPhysicalDeviceFeatures2, VkDeviceCreateInfo:
  • VkPhysicalDeviceRelaxedLineRasterizationFeaturesIMG

New Enum Constants

• VK_IMG_RELAXED_LINE_RASTERIZATION_EXTENSION_NAME
• VK_IMG_RELAXED_LINE_RASTERIZATION_SPEC_VERSION
• Extending VkStructureType:
  • VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RELAXED_LINE_RASTERIZATION_FEATURES_IMG

Issues

None.

Version History

• Revision 1, 2023-10-22 (James Fitzpatrick)
  • Initial version