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Name
MESA_query_driver
Name Strings
EGL_MESA_query_driver
Contact
Rob Clark <robdclark 'at' gmail.com>
Nicolai Hähnle <Nicolai.Haehnle 'at' amd.com>
Contibutors
Veluri Mithun <velurimithun38 'at' gmail.com>
Status
Complete
Version
Version 3, 2019-01-24
Number
EGL Extension 131
Dependencies
EGL 1.0 is required.
Overview
When an application has to query the name of a driver and for
obtaining driver's option list (UTF-8 encoded XML) of a driver
the below functions are useful.
XML file formally describes all available options and also
includes verbal descriptions in multiple languages. Its main purpose
is to be automatically processed by configuration GUIs.
The XML shall respect the following DTD:
<!ELEMENT driinfo (section*)>
<!ELEMENT section (description+, option+)>
<!ELEMENT description (enum*)>
<!ATTLIST description lang CDATA #REQUIRED
text CDATA #REQUIRED>
<!ELEMENT option (description+)>
<!ATTLIST option name CDATA #REQUIRED
type (bool|enum|int|float) #REQUIRED
default CDATA #REQUIRED
valid CDATA #IMPLIED>
<!ELEMENT enum EMPTY>
<!ATTLIST enum value CDATA #REQUIRED
text CDATA #REQUIRED>
New Procedures and Functions
char* eglGetDisplayDriverConfig(EGLDisplay dpy);
const char* eglGetDisplayDriverName(EGLDisplay dpy);
Description
By passing EGLDisplay as parameter to `eglGetDisplayDriverName` one can retrieve
driverName. Similarly passing EGLDisplay to `eglGetDisplayDriverConfig` we can retrieve
driverConfig options of the driver in XML format.
The string returned by `eglGetDisplayDriverConfig` is heap-allocated and caller
is responsible for freeing it.
EGL_BAD_DISPLAY is generated if `disp` is not an EGL display connection.
EGL_NOT_INITIALIZED is generated if `disp` has not been initialized.
If the implementation does not have enough resources to allocate the XML then an
EGL_BAD_ALLOC error is generated.
New Tokens
No new tokens
Issues
None
Revision History
Version 1, 2018-11-05 - First draft (Veluri Mithun)
Version 2, 2019-01-23 - Final version (Veluri Mithun)
Version 3, 2019-01-24 - Mark as complete, add Khronos extension
number, fix parameter name in prototypes,
write revision history (Eric Engestrom)
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