Initial timer query stuff

git-svn-id: svn://cook.msm.cam.ac.uk:745/thrust3d/thrust3d@229 84d2e878-0bd5-11dd-ad15-13eda11d74c5

1 files changed, 15 insertions, 1 deletions

diff --git a/src/render.c b/src/render.c
index e127a34..f6a97e5 100644
--- a/src/render.c
+++ b/src/render.c
@@ -555,9 +555,13 @@ void render_draw(Game *game, Uint32 t) {
 	GLfloat amb[] = { 0.0, 0.0, 0.0, 1.0 };
 	GLfloat fx, fy, fz;
 	GLfloat fxt, fyt, fzt;
+	GLuint timer_query;
 	
 	r = game->render;
-
+	
+	glGenQueries(1, &timer_query);
+	glBeginQuery(GL_TIME_ELAPSED_EXT, timer_query);
+	
 	if ( r->fbos ) {
 		
 		/* Render some swirlyness */
@@ -674,7 +678,17 @@ void render_draw(Game *game, Uint32 t) {
 	
 	render_draw_2d(r, game);
 	
+	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));
+	
 }