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onscreen/native: Make sure to reset the EGL context after dGPU blit

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On hybrid graphics system, the primary path used to transfer the stage
framebuffer onto the dedicated GPU's video memory preparing for scanout,
is using the dedicated GPU to glBlitFramebuffer() the content from the
iGPU texture onto the scanout buffer.

After we have done this, we reset the current EGL context back to the
one managed by cogl. What we failed to do, however, was to reset the
current EGL context when we inhibited the actual page flip due to having
entered power save mode.

When we later started to paint again, Cogl thought the current EGL
context was still the correct one, but in fact it was the one used for
the iGPU -> dGPU blit, causing various EGL surface errors, and as a side
effect, eventually hitting an assert.

Fix this by making sure we reset to the Cogl managed EGL context also
for this case.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1803>
This commit is contained in:
Jonas Ådahl 2021-03-25 18:24:10 +01:00 committed by Marge Bot
parent 60a998bdbc
commit 14f6869381
1 changed files with 9 additions and 9 deletions
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18
src/backends/native/meta-onscreen-native.c
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@ -1071,6 +1071,15 @@ meta_onscreen_native_swap_buffers_with_damage (CoglOnscreen *onscreen,
update_secondary_gpu_state_post_swap_buffers (onscreen, &egl_context_changed);
/*
* If we changed EGL context, cogl will have the wrong idea about what is
* current, making it fail to set it when it needs to. Avoid that by making
* EGL_NO_CONTEXT current now, making cogl eventually set the correct
* context.
*/
if (egl_context_changed)
_cogl_winsys_egl_ensure_current (cogl_display);
power_save_mode = meta_monitor_manager_get_power_save_mode (monitor_manager);
if (power_save_mode == META_POWER_SAVE_ON)
{
@ -1089,15 +1098,6 @@ meta_onscreen_native_swap_buffers_with_damage (CoglOnscreen *onscreen,
return;
}
/*
* If we changed EGL context, cogl will have the wrong idea about what is
* current, making it fail to set it when it needs to. Avoid that by making
* EGL_NO_CONTEXT current now, making cogl eventually set the correct
* context.
*/
if (egl_context_changed)
_cogl_winsys_egl_ensure_current (cogl_display);
COGL_TRACE_BEGIN_SCOPED (MetaRendererNativePostKmsUpdate,
"Onscreen (post pending update)");
kms_crtc = meta_crtc_kms_get_kms_crtc (META_CRTC_KMS (onscreen_native->crtc));