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-rw-r--r--src/egl/main/egldriver.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/egl/main/egldriver.h b/src/egl/main/egldriver.h
index 5149acd9640..c1e6fa28209 100644
--- a/src/egl/main/egldriver.h
+++ b/src/egl/main/egldriver.h
@@ -6,6 +6,27 @@
#include "eglapi.h"
+/**
+ * Define an inline driver typecast function.
+ */
+#define _EGL_DRIVER_TYPECAST(drvtype, egltype, code) \
+ static INLINE struct drvtype *drvtype(const egltype *obj) \
+ { return (struct drvtype *) code; }
+
+
+/**
+ * Define the driver typecast functions for _EGLDriver, _EGLDisplay,
+ * _EGLContext, _EGLSurface, and _EGLConfig.
+ */
+#define _EGL_DRIVER_STANDARD_TYPECASTS(drvname) \
+ _EGL_DRIVER_TYPECAST(drvname ## _driver, _EGLDriver, obj) \
+ /* note that this is not a direct cast */ \
+ _EGL_DRIVER_TYPECAST(drvname ## _display, _EGLDisplay, obj->DriverData) \
+ _EGL_DRIVER_TYPECAST(drvname ## _context, _EGLContext, obj) \
+ _EGL_DRIVER_TYPECAST(drvname ## _surface, _EGLSurface, obj) \
+ _EGL_DRIVER_TYPECAST(drvname ## _config, _EGLConfig, obj)
+
+
typedef _EGLDriver *(*_EGLMain_t)(const char *args);