Only do timer query every few frames

git-svn-id: svn://cook.msm.cam.ac.uk:745/thrust3d/thrust3d@230 84d2e878-0bd5-11dd-ad15-13eda11d74c5

1 files changed, 15 insertions, 11 deletions

diff --git a/src/render.c b/src/render.c
index f6a97e5..f7a2be3 100644
--- a/src/render.c
+++ b/src/render.c
@@ -559,8 +559,10 @@ void render_draw(Game *game, Uint32 t) {
 	
 	r = game->render;
 	
-	glGenQueries(1, &timer_query);
-	glBeginQuery(GL_TIME_ELAPSED_EXT, timer_query);
+	if ( game->frames == 1 ) {
+		glGenQueries(1, &timer_query);
+		glBeginQuery(GL_TIME_ELAPSED_EXT, timer_query);
+	}
 	
 	if ( r->fbos ) {
 		
@@ -678,17 +680,19 @@ void render_draw(Game *game, Uint32 t) {
 	
 	render_draw_2d(r, game);
 	
-	glEndQuery(GL_TIME_ELAPSED_EXT);
+	if ( game->frames == 1 ) glEndQuery(GL_TIME_ELAPSED_EXT);
 	
 	SDL_GL_SwapBuffers();
 	
-	GLint available = 0;
-	GLuint64EXT timeelapsed;
-	while (!available) {
-		glGetQueryObjectiv(timer_query, GL_QUERY_RESULT_AVAILABLE, &available);
-        }
-	glGetQueryObjectui64vEXT(timer_query, GL_QUERY_RESULT, &timeelapsed);
-	printf("Frame took %lli ms to render\n", (long long int)(timeelapsed/1e6));
-	
+	if ( game->frames == 1 ) {
+		GLint available = 0;
+		GLuint64EXT timeelapsed;
+		while (!available) {
+			glGetQueryObjectiv(timer_query, GL_QUERY_RESULT_AVAILABLE, &available);
+		}
+		glGetQueryObjectui64vEXT(timer_query, GL_QUERY_RESULT, &timeelapsed);
+		printf("Frame took %lli ms to render\n", (long long int)(timeelapsed/1e6));
+	}
+		
 }