From ac6a5107e2c005a7f57249d1836c43d0e1f8f496 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keithw@vmware.com>
Date: Tue, 22 Sep 2009 11:01:53 +0100
Subject: progs/perf: break up long runs of fullscreen quads

Not all drivers cope gracefully with command-buffers with zillions of
fullscreen quads.
---
 progs/perf/fill.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

(limited to 'progs/perf')

diff --git a/progs/perf/fill.c b/progs/perf/fill.c
index fb9fa2453f..279f2b5f18 100644
--- a/progs/perf/fill.c
+++ b/progs/perf/fill.c
@@ -169,14 +169,31 @@ static void
 DrawQuad(unsigned count)
 {
    unsigned i;
+   glClear(GL_COLOR_BUFFER_BIT);
+
    for (i = 0; i < count; i++) {
       glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+      /* Avoid sending command buffers with huge numbers of fullscreen
+       * quads.  Graphics schedulers don't always cope well with
+       * this...
+       */
+      if (i % 128 == 0) {
+         PerfSwapBuffers();
+         glClear(GL_COLOR_BUFFER_BIT);
+      }
    }
+
    glFinish();
-   if (0)
+
+   if (1)
       PerfSwapBuffers();
 }
 
+void
+PerfNextRound(void)
+{
+}
 
 /** Called from test harness/main */
 void
-- 
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