VK_QCOM_render_pass_store_ops
Other Extension Metadata
Last Modified Date
2020-03-25
Contributors
- Bill Licea-Kane, Qualcomm Technologies, Inc.
Description
Render pass attachments can be read-only for the duration of a render pass.
Examples include input attachments and depth attachments where depth tests are enabled but depth writes are not enabled.
In such cases, there can be no contents generated for an attachment within the render area.
This extension adds a new VkAttachmentStoreOp
VK_ATTACHMENT_STORE_OP_NONE_QCOM specifying that the contents within
the render area may not be written to memory, but that the prior contents
of the attachment in memory are preserved.
However, if any contents were generated within the render area during
rendering, the contents of the attachment will be undefined: inside the
render area.
The VkAttachmentStoreOp VK_ATTACHMENT_STORE_OP_STORE may force
an implementation to assume that the attachment was written and force an
implementation to flush data to memory or to a higher level cache.
The VkAttachmentStoreOp VK_ATTACHMENT_STORE_OP_NONE_QCOM may
allow an implementation to assume that the attachment was not written and
allow an implementation to avoid such a flush.
New Enum Constants
VK_QCOM_RENDER_PASS_STORE_OPS_EXTENSION_NAMEVK_QCOM_RENDER_PASS_STORE_OPS_SPEC_VERSION- Extending VkAttachmentStoreOp:
VK_ATTACHMENT_STORE_OP_NONE_QCOM
Version History
- Revision 1, 2019-12-20 (wwlk)
- Initial version
- Revision 2, 2020-03-25 (wwlk)
- Minor renaming