1 Name 2 3 CHROMIUM_sync_query 4 5 Name Strings 6 7 GL_CHROMIUM_sync_query 8 9 Version 10 11 Last Modifed Date: April 15, 2014 12 13 Dependencies 14 15 OpenGL ES 2.0 is required. 16 17 EXT_occlusion_query_boolean is required. 18 19 Overview 20 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). 24 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). 31 32 New Procedures and Functions 33 34 None. 35 36 Errors 37 38 None. 39 40 New Tokens 41 42 Accepted by the <target> parameter of BeginQueryEXT, EndQueryEXT, 43 and GetQueryivEXT: 44 45 COMMANDS_COMPLETED_CHROMIUM 0x84F7 46 47 New State 48 49 None. 50 51 Revision History 52 53 4/15/2014 Documented the extension 54
