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simple-dmabuf-egl: Allow QueryDmaBufModifiers to report no modifiers 

Some drivers expose the extension so they can expose
eglQueryDmaBufFormatsEXT, but don't support any modifiers. Treat this the
same as if the extension wasn't present.
This commit is contained in:
Adam Jackson 2019-09-05 12:38:28 -04:00 committed by Pekka Paalanen
parent 8ba775d96d
commit 95efe82982
1 changed files with 18 additions and 12 deletions
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30
clients/simple-dmabuf-egl.c
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@ -1232,26 +1232,32 @@ display_update_supported_modifiers_for_egl(struct display *d)
int num_egl_modifiers = 0;
EGLBoolean ret;
int i;
bool try_modifiers = d->egl.has_dma_buf_import_modifiers;
if (try_modifiers) {
ret = d->egl.query_dma_buf_modifiers(d->egl.display,
BUFFER_FORMAT,
0, /* max_modifiers */
NULL, /* modifiers */
NULL, /* external_only */
&num_egl_modifiers);
if (ret == EGL_FALSE) {
fprintf(stderr, "Failed to query num EGL modifiers for format\n");
goto error;
}
}
if (!num_egl_modifiers)
try_modifiers = false;
/* If EGL doesn't support modifiers, don't use them at all. */
if (!d->egl.has_dma_buf_import_modifiers) {
if (!try_modifiers) {
d->modifiers_count = 0;
free(d->modifiers);
d->modifiers = NULL;
return true;
}
ret = d->egl.query_dma_buf_modifiers(d->egl.display,
BUFFER_FORMAT,
0, /* max_modifiers */
NULL, /* modifiers */
NULL, /* external_only */
&num_egl_modifiers);
if (ret == EGL_FALSE || num_egl_modifiers == 0) {
fprintf(stderr, "Failed to query num EGL modifiers for format\n");
goto error;
}
egl_modifiers = zalloc(num_egl_modifiers * sizeof(*egl_modifiers));
ret = d->egl.query_dma_buf_modifiers(d->egl.display,