helper to check for egl entrypoints

Remove some boilerplate and check more specifically for all the entry-
points that different modules need.

Ok, I guess it isn't likely for a driver to expose eglCreateImageKHR
but not eglDeleteImageKHR.. but otoh kmscube is useful for bringing
up drivers.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/common.h b/common.h
index 0acf4c0..11ec26e 100644
--- a/common.h
+++ b/common.h
@@ -85,6 +85,17 @@ struct egl {
 	void (*draw)(unsigned i);
 };
 
+static inline int __egl_check(void *ptr, const char *name)
+{
+	if (!ptr) {
+		printf("no %s\n", name);
+		return -1;
+	}
+	return 0;
+}
+
+#define egl_check(egl, name) __egl_check((egl)->name, #name)
+
 int init_egl(struct egl *egl, const struct gbm *gbm);
 int create_program(const char *vs_src, const char *fs_src);
 int link_program(unsigned program);