Add dynamic dispatch for any calls to OpenGL functions.

[fips] / eglwrap.c

diff --git a/eglwrap.c b/eglwrap.c
index aaa8cb7815cf3d6bb3ecfb50d144d3e45e4c5754..913fd488d74a23dc0d7a9277dfe37525e3db776f 100644 (file)
--- a/eglwrap.c
+++ b/eglwrap.c
@@ -21,11 +21,33 @@
 
 #include "fips.h"
 
+#include "fips-dispatch.h"
+
 #include <EGL/egl.h>
 
 #include "dlwrap.h"
 #include "metrics.h"
 
+/* Defer to the real 'function' (from libEGL.so.1) to do the real work.
+ * The symbol is looked up once and cached in a static variable for
+ * future uses.
+ */
+#define EGLWRAP_DEFER(function,...) do {                       \
+       static typeof(&function) real_ ## function;             \
+       if (! real_ ## function)                                \
+               real_ ## function = eglwrap_lookup (#function); \
+       real_ ## function(__VA_ARGS__);                         \
+} while (0);
+
+/* As EGLWRAP_DEFER, but also set 'ret' to the return value */
+#define EGLWRAP_DEFER_WITH_RETURN(ret, function,...) do {      \
+       static typeof(&function) real_ ## function;             \
+       if (! real_ ## function)                                \
+               real_ ## function = eglwrap_lookup (#function); \
+       (ret) = real_ ## function(__VA_ARGS__);                 \
+} while (0);
+
+
 static void *
 eglwrap_lookup (char *name)
 {
@@ -48,14 +70,22 @@ EGLBoolean
 eglSwapBuffers (EGLDisplay dpy, EGLSurface surface)
 {
        EGLBoolean ret;
-       static typeof(&eglSwapBuffers) real_eglSwapBuffers;
 
-       if (! real_eglSwapBuffers)
-               real_eglSwapBuffers = eglwrap_lookup ("eglSwapBuffers");
+       EGLWRAP_DEFER_WITH_RETURN (ret, eglSwapBuffers, dpy, surface);
+       metrics_end_frame ();
+
+       return ret;
+}
 
-       ret = real_eglSwapBuffers (dpy, surface);
+EGLBoolean
+eglMakeCurrent (EGLDisplay display, EGLSurface draw, EGLSurface read,
+               EGLContext context)
+{
+       EGLBoolean ret;
 
-       metrics_end_frame ();
+       fips_dispatch_init (FIPS_API_EGL);
+
+       EGLWRAP_DEFER_WITH_RETURN (ret, eglMakeCurrent, display, draw, read, context);
 
        return ret;
 }