X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Ffreeglut_display.c;h=2ba0ec549c9f277bda903501f92ead5580b15cf7;hb=9e756b17d58b2991a8f4735c14d40a5843fc7db7;hp=605248be841ec7e38276f2122d92cf50ccc4dbf7;hpb=b34d0911162e60f2eb2e87286dabda0d140a10d6;p=freeglut

diff --git a/src/freeglut_display.c b/src/freeglut_display.c
index 605248b..2ba0ec5 100644
--- a/src/freeglut_display.c
+++ b/src/freeglut_display.c
@@ -25,16 +25,9 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#define  G_LOG_DOMAIN  "freeglut-display"
-
-#include "../include/GL/freeglut.h"
+#include <GL/freeglut.h>
 #include "freeglut_internal.h"
 
-
 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
 
 /*
@@ -42,9 +35,14 @@
  */
 void FGAPIENTRY glutPostRedisplay( void )
 {
-    freeglut_assert_ready;
-    freeglut_assert_window;
-    fgStructure.Window->State.Redisplay = TRUE;
+    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPostRedisplay" );
+    if ( ! fgStructure.CurrentWindow )
+	{
+      fgError ( " ERROR:  Function <%s> called"
+                " with no current window defined.", "glutPostRedisplay" ) ;
+	}
+
+    fgStructure.CurrentWindow->State.Redisplay = GL_TRUE;
 }
 
 /*
@@ -52,32 +50,37 @@ void FGAPIENTRY glutPostRedisplay( void )
  */
 void FGAPIENTRY glutSwapBuffers( void )
 {
-    freeglut_assert_ready;
-    freeglut_assert_window;
-
-    fgDisplayCursor();
-    glFlush();
+    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSwapBuffers" );
+    FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSwapBuffers" );
 
-    if ( ! fgStructure.Window->Window.DoubleBuffered )
-	return ;
+    /*
+     * "glXSwapBuffers" already performs an implicit call to "glFlush". What
+     * about "SwapBuffers"?
+     */
+    glFlush( );
+    if( ! fgStructure.CurrentWindow->Window.DoubleBuffered )
+        return;
 
-#if TARGET_HOST_UNIX_X11
-    glXSwapBuffers( fgDisplay.Display, fgStructure.Window->Window.Handle );
-#elif TARGET_HOST_WIN32
-    SwapBuffers( fgStructure.Window->Window.Device );
+#if TARGET_HOST_POSIX_X11
+    glXSwapBuffers( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle );
+#elif TARGET_HOST_MS_WINDOWS
+    SwapBuffers( fgStructure.CurrentWindow->Window.Device );
 #endif
 
     /* GLUT_FPS env var support */
-    if (fgState.FPSInterval) {
-        GLint t = glutGet(GLUT_ELAPSED_TIME);
+    if( fgState.FPSInterval )
+    {
+        GLint t = glutGet( GLUT_ELAPSED_TIME );
         fgState.SwapCount++;
-        if (fgState.SwapTime == 0)
+        if( fgState.SwapTime == 0 )
             fgState.SwapTime = t;
-        else if (t - fgState.SwapTime > fgState.FPSInterval) {
-            float time = 0.001f * (t - fgState.SwapTime);
-            float fps = (float) fgState.SwapCount / time;
-            fprintf(stderr, "freeglut: %d frames in %.2f seconds = %.2f FPS\n",
-                    fgState.SwapCount, time, fps);
+        else if( t - fgState.SwapTime > fgState.FPSInterval )
+        {
+            float time = 0.001f * ( t - fgState.SwapTime );
+            float fps = ( float )fgState.SwapCount / time;
+            fprintf( stderr,
+                     "freeglut: %d frames in %.2f seconds = %.2f FPS\n",
+                     fgState.SwapCount, time, fps );
             fgState.SwapTime = t;
             fgState.SwapCount = 0;
         }
@@ -91,10 +94,10 @@ void FGAPIENTRY glutPostWindowRedisplay( int windowID )
 {
     SFG_Window* window;
 
-    freeglut_assert_ready;
+    FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutPostWindowRedisplay" );
     window = fgWindowByID( windowID );
-    freeglut_return_if_fail( window != NULL );
-    window->State.Redisplay = TRUE;
+    freeglut_return_if_fail( window );
+    window->State.Redisplay = GL_TRUE;
 }
 
 /*** END OF FILE ***/