use EGLint instead of unsigned long for eglCopyContextMESA, added comments

4 files changed, 11 insertions, 5 deletions

diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index 02b944f136c..c5e67ed672a 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -416,7 +416,7 @@ eglGetModeAttribMESA(EGLDisplay dpy, EGLModeMESA mode, EGLint attribute, EGLint
 
 
 EGLBoolean APIENTRY
-eglCopyContextMESA(EGLDisplay dpy, EGLContext source, EGLContext dest, unsigned long mask)
+eglCopyContextMESA(EGLDisplay dpy, EGLContext source, EGLContext dest, EGLint mask)
 {
    _EGLDriver *drv = _eglLookupDriver(dpy);
    if (drv)
diff --git a/src/egl/main/eglcontext.c b/src/egl/main/eglcontext.c
index e878cc9d7cf..283dd3f1a5b 100644
--- a/src/egl/main/eglcontext.c
+++ b/src/egl/main/eglcontext.c
@@ -226,9 +226,15 @@ _eglMakeCurrent(_EGLDriver *drv, EGLDisplay dpy, EGLSurface d, EGLSurface r, EGL
 }
 
 
+/**
+ * This is defined by the EGL_MESA_copy_context extension.
+ */
 EGLBoolean
-_eglCopyContextMESA(_EGLDriver *drv, EGLDisplay dpy, EGLContext source, EGLContext dest, unsigned long mask)
+_eglCopyContextMESA(_EGLDriver *drv, EGLDisplay dpy, EGLContext source,
+                    EGLContext dest, EGLint mask)
 {
+   /* This function will always have to be overridden/implemented in the
+    * device driver.  If the driver is based on Mesa, use _mesa_copy_context().
+    */
    return EGL_FALSE;
 }
-
diff --git a/src/egl/main/eglcontext.h b/src/egl/main/eglcontext.h
index d2c56fdb075..d74d6e3253e 100644
--- a/src/egl/main/eglcontext.h
+++ b/src/egl/main/eglcontext.h
@@ -62,6 +62,6 @@ _eglMakeCurrent(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw, EGLSurface rea
 
 
 extern EGLBoolean
-_eglCopyContextMESA(_EGLDriver *drv, EGLDisplay dpy, EGLContext source, EGLContext dest, unsigned long mask);
+_eglCopyContextMESA(_EGLDriver *drv, EGLDisplay dpy, EGLContext source, EGLContext dest, EGLint mask);
 
 #endif /* EGLCONTEXT_INCLUDED */
diff --git a/src/egl/main/egldriver.h b/src/egl/main/egldriver.h
index d83bc46f66b..cc6d0814bde 100644
--- a/src/egl/main/egldriver.h
+++ b/src/egl/main/egldriver.h
@@ -46,7 +46,7 @@ typedef EGLBoolean (*WaitNative_t)(_EGLDriver *drv, EGLDisplay dpy, EGLint engin
 typedef EGLBoolean (*ChooseModeMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen, const EGLint *attrib_list, EGLModeMESA *modes, EGLint modes_size, EGLint *num_modes);
 typedef EGLBoolean (*GetModesMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen, EGLModeMESA *modes, EGLint mode_size, EGLint *num_mode);
 typedef EGLBoolean (*GetModeAttribMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLModeMESA mode, EGLint attribute, EGLint *value);
-typedef EGLBoolean (*CopyContextMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLContext source, EGLContext dest, unsigned long mask);
+typedef EGLBoolean (*CopyContextMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLContext source, EGLContext dest, EGLint mask);
 typedef EGLBoolean (*GetScreensMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA *screens, EGLint max_screens, EGLint *num_screens);
 typedef EGLSurface (*CreateScreenSurfaceMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list);
 typedef EGLBoolean (*ShowSurfaceMESA_t)(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen, EGLSurface surface, EGLModeMESA mode);