gl-renderer: Add support for fence sync extensions
Check for the EGL_KHR_fence_sync and EGL_ANDROID_native_fence_sync
extensions and get pointers to required extension functions.
These extensions allow us to acquire GPU timestamp information
asynchronously, and are required by the upcoming work to add
rendering begin/end timepoints to the weston timeline.
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/libweston/gl-renderer.c b/libweston/gl-renderer.c
index 5768f05..c2e88a6 100644
--- a/libweston/gl-renderer.c
+++ b/libweston/gl-renderer.c
@@ -231,6 +231,11 @@
int has_dmabuf_import_modifiers;
PFNEGLQUERYDMABUFFORMATSEXTPROC query_dmabuf_formats;
PFNEGLQUERYDMABUFMODIFIERSEXTPROC query_dmabuf_modifiers;
+
+ int has_native_fence_sync;
+ PFNEGLCREATESYNCKHRPROC create_sync;
+ PFNEGLDESTROYSYNCKHRPROC destroy_sync;
+ PFNEGLDUPNATIVEFENCEFDANDROIDPROC dup_native_fence_fd;
};
static PFNEGLGETPLATFORMDISPLAYEXTPROC get_platform_display = NULL;
@@ -3028,6 +3033,17 @@
if (weston_check_egl_extension(extensions, "GL_EXT_texture_rg"))
gr->has_gl_texture_rg = 1;
+ if (weston_check_egl_extension(extensions, "EGL_KHR_fence_sync") &&
+ weston_check_egl_extension(extensions, "EGL_ANDROID_native_fence_sync")) {
+ gr->create_sync =
+ (void *) eglGetProcAddress("eglCreateSyncKHR");
+ gr->destroy_sync =
+ (void *) eglGetProcAddress("eglDestroySyncKHR");
+ gr->dup_native_fence_fd =
+ (void *) eglGetProcAddress("eglDupNativeFenceFDANDROID");
+ gr->has_native_fence_sync = 1;
+ }
+
renderer_setup_egl_client_extensions(gr);
return 0;