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egl: Set EGL_IMAGE_PRESERVED_KHR on DMABUF import

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Otherwise drivers would be free to alter the buffer content. While no
driver is known to do so, it's probably good to make things explicit.
See also `import_simple_dmabuf()` in Weston.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2990>
This commit is contained in:
Robert Mader 2023-05-07 21:59:48 +02:00
parent 29ec2d2e20
commit 2dd5196267
1 changed files with 3 additions and 1 deletions
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4
src/backends/meta-egl.c
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@ -609,7 +609,7 @@ meta_egl_create_dmabuf_image (MetaEgl *egl,
const uint64_t *modifiers,
GError **error)
{
EGLint attribs[37];
EGLint attribs[39];
int atti = 0;
/* This requires the Mesa commit in
@ -626,6 +626,8 @@ meta_egl_create_dmabuf_image (MetaEgl *egl,
attribs[atti++] = height;
attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
attribs[atti++] = drm_format;
attribs[atti++] = EGL_IMAGE_PRESERVED_KHR;
attribs[atti++] = EGL_TRUE;
if (n_planes > 0)
{