isa/mutter
1
0
Fork 0
mirror of https://github.com/brl/mutter.git synced 2025-06-14 01:09:30 +00:00
Code Issues Packages Projects Releases Wiki Activity

Adds a NOP driver

Browse Source 
This adds a new "nop" driver that does nothing. This can be selected at
runtime either with the COGL_DRIVER=nop environment variable or by
passing COGL_DRIVER_NOP to cogl_renderer_set_driver()

Adding the nop driver gives us a way to test workloads without any
driver and hardware overheads which can help us understand how Cogl's
state tracking performs in isolation.

Having a nop driver can also serve as an shell/outline for creating
other drivers later.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 90587418233b6438290741d80aedf193ae660cad)
This commit is contained in:
Robert Bragg
2012-09-12 22:39:46 +01:00
parent 4efcd4e6a6
commit ae713a32d0
13 changed files with 766 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
cogl/cogl-renderer.c
View File

@ -88,6 +88,8 @@ extern const CoglTextureDriver _cogl_texture_driver_gles;
extern const CoglDriverVtable _cogl_driver_gles;
#endif
extern const CoglDriverVtable _cogl_driver_nop;
static CoglWinsysVtableGetter _cogl_winsys_vtable_getters[] =
{
#ifdef COGL_HAS_GLX_SUPPORT
@ -308,6 +310,15 @@ _cogl_renderer_choose_driver (CoglRenderer *renderer,
}
#endif
if (renderer->driver_override == COGL_DRIVER_NOP ||
(renderer->driver_override == COGL_DRIVER_ANY &&
(driver_name == NULL || !g_ascii_strcasecmp (driver_name, "nop"))))
{
renderer->driver = COGL_DRIVER_NOP;
libgl_name = NULL;
goto found;
}
_cogl_set_error (error,
COGL_DRIVER_ERROR,
COGL_DRIVER_ERROR_NO_SUITABLE_DRIVER_FOUND,
@ -328,16 +339,21 @@ found:
#ifndef HAVE_DIRECTLY_LINKED_GL_LIBRARY
renderer->libgl_module = g_module_open (libgl_name,
G_MODULE_BIND_LAZY);
if (renderer->libgl_module == NULL)
if (renderer->driver == COGL_DRIVER_GL ||
renderer->driver == COGL_DRIVER_GLES1 ||
renderer->driver == COGL_DRIVER_GLES2)
{
_cogl_set_error (error, COGL_DRIVER_ERROR,
COGL_DRIVER_ERROR_FAILED_TO_LOAD_LIBRARY,
"Failed to dynamically open the GL library \"%s\"",
libgl_name);
return FALSE;
renderer->libgl_module = g_module_open (libgl_name,
G_MODULE_BIND_LAZY);
if (renderer->libgl_module == NULL)
{
_cogl_set_error (error, COGL_DRIVER_ERROR,
COGL_DRIVER_ERROR_FAILED_TO_LOAD_LIBRARY,
"Failed to dynamically open the GL library \"%s\"",
libgl_name);
return FALSE;
}
}
#endif /* HAVE_DIRECTLY_LINKED_GL_LIBRARY */
@ -359,8 +375,10 @@ found:
break;
#endif
case COGL_DRIVER_NOP:
default:
g_assert_not_reached ();
renderer->driver_vtable = &_cogl_driver_nop;
renderer->texture_driver = NULL;
}
return TRUE;