mesa: Add success/failures return value to _mesa_make_current.

src/mesa/main/context.c

@@ -1259,7 +1259,7 @@ initialize_framebuffer_size(GLcontext *ctx, GLframebuffer *fb)
  * \param drawBuffer  the drawing framebuffer
  * \param readBuffer  the reading framebuffer
  */
-void
+GLboolean
 _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
                     GLframebuffer *readBuffer )
 {
@@ -1272,14 +1272,14 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
       if (!check_compatible(newCtx, drawBuffer)) {
          _mesa_warning(newCtx,
               "MakeCurrent: incompatible visuals for context and drawbuffer");
-         return;
+         return GL_FALSE;
       }
    }
    if (newCtx && readBuffer && newCtx->WinSysReadBuffer != readBuffer) {
       if (!check_compatible(newCtx, readBuffer)) {
          _mesa_warning(newCtx,
               "MakeCurrent: incompatible visuals for context and readbuffer");
-         return;
+         return GL_FALSE;
       }
    }
 
@@ -1384,6 +1384,8 @@ _mesa_make_current( GLcontext *newCtx, GLframebuffer *drawBuffer,
 	 newCtx->FirstTimeCurrent = GL_FALSE;
       }
    }
+   
+   return GL_TRUE;
 }
 
 

src/mesa/main/context.h

@@ -130,7 +130,7 @@ extern void
 _mesa_copy_context(const GLcontext *src, GLcontext *dst, GLuint mask);
 
 
-extern void
+extern GLboolean
 _mesa_make_current( GLcontext *ctx, GLframebuffer *drawBuffer,
                     GLframebuffer *readBuffer );