Vulkan.Extensions.VK_IMG_format_pvrtc

Name

VK_IMG_format_pvrtc - device extension

VK_IMG_format_pvrtc

Name String

VK_IMG_format_pvrtc

Extension Type

Device extension

Registered Extension Number

55

Revision

1

Ratification Status

Not ratified

Extension and Version Dependencies

None

Deprecation State

• Deprecated without replacement

Contact

• Stuart Smith

Other Extension Metadata

Last Modified Date

2019-09-02

IP Status

Imagination Technologies Proprietary

Contributors

• Stuart Smith, Imagination Technologies

Description

VK_IMG_format_pvrtc provides additional texture compression functionality specific to Imagination Technologies PowerVR Texture compression format (called PVRTC).

As also noted in the Khronos Data Format Specification, PVRTC1 images must have dimensions that are a power of two.

Deprecation

Both PVRTC1 and PVRTC2 are slower than standard image formats on PowerVR GPUs, and support will be removed from future hardware.

New Enum Constants

• IMG_FORMAT_PVRTC_EXTENSION_NAME

• IMG_FORMAT_PVRTC_SPEC_VERSION

• Extending Format:

  • FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG

  • FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG

  • FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG

  • FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG

  • FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG

  • FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG

  • FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG

  • FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG

Version History

• Revision 1, 2019-09-02 (Stuart Smith)

  • Initial version

See Also

No cross-references are available

Document Notes

For more information, see the Vulkan Specification.

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