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PojavLauncherTeam
GitHub Repository: PojavLauncherTeam/angle
 Path: blob/main_old/extensions/CHROMIUM_sync_query.txt
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Name

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    CHROMIUM_sync_query

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Name Strings

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    GL_CHROMIUM_sync_query

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Version

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    Last Modifed Date: April 15, 2014

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Dependencies

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    OpenGL ES 2.0 is required.

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    EXT_occlusion_query_boolean is required.

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Overview

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    This extension provides a query mechanism that allow for synchronization

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    between the host CPU and the GPU, which may be accessing the same

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    resources (typically memory).

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    This extension is useful in conjunction with CHROMIUM_map_image to

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    determine when it is safe to access a mapped image. Once the result of

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    a COMMANDS_COMPLETED_CHROMIUM query is available, all drawing commands

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    issued before the query must have finished. This ensures that the memory

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    corresponding to the issued commands can be safely modified (assuming no

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    other outstanding drawing commands are issued subsequent to the query).

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New Procedures and Functions

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    None.

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Errors

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    None.

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New Tokens

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    Accepted by the <target> parameter of BeginQueryEXT, EndQueryEXT,

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    and GetQueryivEXT:

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        COMMANDS_COMPLETED_CHROMIUM                     0x84F7

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New State

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    None.

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Revision History

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    4/15/2014   Documented the extension

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