11 Last Modifed Date: April 15, 2014
15 OpenGL ES 2.0 is required.
17 EXT_occlusion_query_boolean is required.
21 This extension provides a query mechanism that allow for synchronization
22 between the host CPU and the GPU, which may be accessing the same
23 resources (typically memory).
25 This extension is useful in conjunction with CHROMIUM_map_image to
26 determine when it is safe to access a mapped image. Once the result of
27 a COMMANDS_COMPLETED_CHROMIUM query is available, all drawing commands
28 issued before the query must have finished. This ensures that the memory
29 corresponding to the issued commands can be safely modified (assuming no
30 other outstanding drawing commands are issued subsequent to the query).
32 New Procedures and Functions
42 Accepted by the <target> parameter of BeginQueryEXT, EndQueryEXT,
45 COMMANDS_COMPLETED_CHROMIUM 0x84F7
53 4/15/2014 Documented the extension