Extension is identical to the EXT one, yet we need to check for the KHR
abbreviated extension name + entry-point.

Signed-off-by: Emil Velikov <[email protected]>
---
 libweston/gl-renderer.c | 29 +++++++++++++++++++++++------
 1 file changed, 23 insertions(+), 6 deletions(-)

diff --git a/libweston/gl-renderer.c b/libweston/gl-renderer.c
index 3e8e5ab..a585001 100644
--- a/libweston/gl-renderer.c
+++ b/libweston/gl-renderer.c
@@ -2781,6 +2781,18 @@ renderer_setup_egl_client_extensions(struct gl_renderer 
*gr)
 static int
 gl_renderer_setup_egl_extensions(struct weston_compositor *ec)
 {
+       static const struct {
+               char *extension, *entrypoint;
+       } foo[] = {
+               {
+                       .extension = "EGL_EXT_swap_buffers_with_damage",
+                       .entrypoint = "eglSwapBuffersWithDamageEXT",
+               },
+               {
+                       .extension = "EGL_KHR_swap_buffers_with_damage",
+                       .entrypoint = "eglSwapBuffersWithDamageKHR",
+               },
+       };
        struct gl_renderer *gr = get_renderer(ec);
        const char *extensions;
        EGLBoolean ret;
@@ -2815,12 +2827,17 @@ gl_renderer_setup_egl_extensions(struct 
weston_compositor *ec)
                weston_log("warning: EGL_EXT_buffer_age not supported. "
                           "Performance could be affected.\n");
 
-       if (weston_check_egl_extension(extensions, 
"EGL_EXT_swap_buffers_with_damage"))
-               gr->swap_buffers_with_damage =
-                       (void *) 
eglGetProcAddress("eglSwapBuffersWithDamageEXT");
-       else
-               weston_log("warning: EGL_EXT_swap_buffers_with_damage not "
-                          "supported. Performance could be affected.\n");
+       for (unsigned i = 0; i < ARRAY_LENGTH(foo); i++) {
+               if (weston_check_egl_extension(extensions, foo[i].extension)) {
+                       gr->swap_buffers_with_damage =
+                               (void *) eglGetProcAddress(foo[i].entrypoint);
+                       break;
+               }
+       }
+       if (!gr->swap_buffers_with_damage)
+               weston_log("warning: neither %s or %s is supported. "
+                          "Performance could be affected.\n",
+                          foo[0].extension, foo[1].extension);
 
        if (weston_check_egl_extension(extensions, 
"EGL_MESA_configless_context"))
                gr->has_configless_context = 1;
-- 
2.9.3

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