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cogl: Use EGL_IMG_context_priority if available

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We're the context closest to the display, so we should take priority
over other clients.

v2: Warn if we asked for a high-priority context and didn't get one.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/454
This commit is contained in:
Adam Jackson 2019-02-20 17:14:14 -05:00 committed by Georges Basile Stavracas Neto
parent 3f29b47809
commit 7df86fb246
3 changed files with 36 additions and 2 deletions
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6
cogl/cogl/winsys/cogl-winsys-egl-feature-functions.h
View File

@ -147,3 +147,9 @@ COGL_WINSYS_FEATURE_BEGIN (surfaceless_context,
"surfaceless_context\0",
COGL_EGL_WINSYS_FEATURE_SURFACELESS_CONTEXT)
COGL_WINSYS_FEATURE_END ()
COGL_WINSYS_FEATURE_BEGIN (context_priority,
"IMG\0",
"context_priority\0",
COGL_EGL_WINSYS_FEATURE_CONTEXT_PRIORITY)
COGL_WINSYS_FEATURE_END ()

3
cogl/cogl/winsys/cogl-winsys-egl-private.h
View File

@ -105,7 +105,8 @@ typedef enum _CoglEGLWinsysFeature
COGL_EGL_WINSYS_FEATURE_CREATE_CONTEXT =1L<<3,
COGL_EGL_WINSYS_FEATURE_BUFFER_AGE =1L<<4,
COGL_EGL_WINSYS_FEATURE_FENCE_SYNC =1L<<5,
COGL_EGL_WINSYS_FEATURE_SURFACELESS_CONTEXT =1L<<6
COGL_EGL_WINSYS_FEATURE_SURFACELESS_CONTEXT =1L<<6,
COGL_EGL_WINSYS_FEATURE_CONTEXT_PRIORITY =1L<<7,
} CoglEGLWinsysFeature;
typedef struct _CoglRendererEGL

29
cogl/cogl/winsys/cogl-winsys-egl.c
View File

@ -71,6 +71,12 @@
#define EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR 0x00000002
#endif
#ifndef EGL_IMG_context_priority
#define EGL_CONTEXT_PRIORITY_LEVEL_IMG 0x3100
#define EGL_CONTEXT_PRIORITY_HIGH_IMG 0x3101
#define EGL_CONTEXT_PRIORITY_MEDIUM_IMG 0x3102
#define EGL_CONTEXT_PRIORITY_LOW_IMG 0x3103
#endif
#define MAX_EGL_CONFIG_ATTRIBS 30
@ -347,7 +353,7 @@ try_create_context (CoglDisplay *display,
CoglRendererEGL *egl_renderer = renderer->winsys;
EGLDisplay edpy;
EGLConfig config;
EGLint attribs[9];
EGLint attribs[11];
EGLint cfg_attribs[MAX_EGL_CONFIG_ATTRIBS];
GError *config_error = NULL;
const char *error_message;
@ -404,6 +410,13 @@ try_create_context (CoglDisplay *display,
attribs[i++] = 2;
}
if (egl_renderer->private_features &
COGL_EGL_WINSYS_FEATURE_CONTEXT_PRIORITY)
{
attribs[i++] = EGL_CONTEXT_PRIORITY_LEVEL_IMG;
attribs[i++] = EGL_CONTEXT_PRIORITY_HIGH_IMG;
}
attribs[i++] = EGL_NONE;
egl_display->egl_context = eglCreateContext (edpy,
@ -417,6 +430,20 @@ try_create_context (CoglDisplay *display,
goto fail;
}
if (egl_renderer->private_features &
COGL_EGL_WINSYS_FEATURE_CONTEXT_PRIORITY)
{
EGLint value = EGL_CONTEXT_PRIORITY_MEDIUM_IMG;
eglQueryContext (egl_renderer->edpy,
egl_display->egl_context,
EGL_CONTEXT_PRIORITY_LEVEL_IMG,
&value);
if (value != EGL_CONTEXT_PRIORITY_HIGH_IMG)
g_warning ("Failed to obtain high priority context");
}
if (egl_renderer->platform_vtable->context_created &&
!egl_renderer->platform_vtable->context_created (display, error))
return FALSE;