[mutter] renderer/native: Only enable shadowfbs if we can blit
- From: verdre <jonasd src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [mutter] renderer/native: Only enable shadowfbs if we can blit
- Date: Tue, 26 May 2020 14:21:35 +0000 (UTC)
commit 346cadeddbd66c648c5a72577864701d74f27469
Author: Jonas Ã…dahl <jadahl gmail com>
Date: Tue May 5 17:06:35 2020 +0200
renderer/native: Only enable shadowfbs if we can blit
There is no point in enabling shadow buffers if we can't as that'd be
even slower than not having them at all.
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1237
src/backends/native/meta-renderer-native.c | 5 +++++
1 file changed, 5 insertions(+)
---
diff --git a/src/backends/native/meta-renderer-native.c b/src/backends/native/meta-renderer-native.c
index 43611d3e4f..c4b68f10eb 100644
--- a/src/backends/native/meta-renderer-native.c
+++ b/src/backends/native/meta-renderer-native.c
@@ -3105,12 +3105,17 @@ should_force_shadow_fb (MetaRendererNative *renderer_native,
MetaGpuKms *primary_gpu)
{
MetaRenderer *renderer = META_RENDERER (renderer_native);
+ CoglContext *cogl_context =
+ cogl_context_from_renderer_native (renderer_native);
int kms_fd;
uint64_t prefer_shadow = 0;
if (meta_renderer_is_hardware_accelerated (renderer))
return FALSE;
+ if (!cogl_has_feature (cogl_context, COGL_FEATURE_ID_BLIT_FRAMEBUFFER))
+ return FALSE;
+
kms_fd = meta_gpu_kms_get_fd (primary_gpu);
if (drmGetCap (kms_fd, DRM_CAP_DUMB_PREFER_SHADOW, &prefer_shadow) == 0)
{
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