Mesa (master): egl: Add macros to define typecast functions.
Chia-I Wu
olv at kemper.freedesktop.org
Thu Feb 4 06:38:27 UTC 2010
Module: Mesa
Branch: master
Commit: bdb9e202de2524821bec1a136d48af70df8fb60e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=bdb9e202de2524821bec1a136d48af70df8fb60e
Author: Chia-I Wu <olvaffe at gmail.com>
Date: Thu Feb 4 12:52:15 2010 +0800
egl: Add macros to define typecast functions.
There are standard typecast functions that are common to most drivers.
They are used to typecast, for example, an _EGLSurface to a
driver-defined type.
This commits define _EGL_DRIVER_STANDARD_TYPECASTS and
_EGL_DRIVER_TYPECAST that should hopefully save some typings for driver
writers.
---
src/egl/main/egldriver.h | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/src/egl/main/egldriver.h b/src/egl/main/egldriver.h
index 5149acd..c1e6fa2 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);
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