зеркало из https://github.com/AvaloniaUI/angle.git
54 строки
1.1 KiB
Plaintext
54 строки
1.1 KiB
Plaintext
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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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