| Name |
| |
| CHROMIUM_sync_query |
| |
| Name Strings |
| |
| GL_CHROMIUM_sync_query |
| |
| Version |
| |
| Last Modifed Date: April 15, 2014 |
| |
| Dependencies |
| |
| OpenGL ES 2.0 is required. |
| |
| EXT_occlusion_query_boolean is required. |
| |
| Overview |
| |
| This extension provides a query mechanism that allow for synchronization |
| between the host CPU and the GPU, which may be accessing the same |
| resources (typically memory). |
| |
| This extension is useful in conjunction with CHROMIUM_map_image to |
| determine when it is safe to access a mapped image. Once the result of |
| a COMMANDS_COMPLETED_CHROMIUM query is available, all drawing commands |
| issued before the query must have finished. This ensures that the memory |
| corresponding to the issued commands can be safely modified (assuming no |
| other outstanding drawing commands are issued subsequent to the query). |
| |
| New Procedures and Functions |
| |
| None. |
| |
| Errors |
| |
| None. |
| |
| New Tokens |
| |
| Accepted by the <target> parameter of BeginQueryEXT, EndQueryEXT, |
| and GetQueryivEXT: |
| |
| COMMANDS_COMPLETED_CHROMIUM 0x84F7 |
| |
| New State |
| |
| None. |
| |
| Revision History |
| |
| 4/15/2014 Documented the extension |
