From 7db993a98b9239bd4e384cc4aa128262fe3cf52c Mon Sep 17 00:00:00 2001
From: Mathias Agopian <mathias@google.com>
Date: Sun, 25 Mar 2012 00:49:46 -0700
Subject: debug.egl.finish can be used to force a glFinish() when
 eglSwapBuffers() is called

this debug property is evaludated at eglInitialize() time.

Change-Id: Ie439e4aac87f7fdc6ab2add86183d6d042f3ee8b
---
 opengl/libs/EGL/eglApi.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'opengl/libs/EGL/eglApi.cpp')

diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index a1bd82d..8bfa16d 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -30,6 +30,7 @@
 
 #include <cutils/log.h>
 #include <cutils/atomic.h>
+#include <cutils/compiler.h>
 #include <cutils/properties.h>
 #include <cutils/memory.h>
 
@@ -732,6 +733,17 @@ EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
 #endif
 
     egl_surface_t const * const s = get_surface(draw);
+
+    if (CC_UNLIKELY(dp->finishOnSwap)) {
+        uint32_t pixel;
+        egl_context_t * const c = get_context( egl_tls_t::getContext() );
+        if (c) {
+            // glReadPixels() ensures that the frame is complete
+            s->cnx->hooks[c->version]->gl.glReadPixels(0,0,1,1,
+                    GL_RGBA,GL_UNSIGNED_BYTE,&pixel);
+        }
+    }
+
     return s->cnx->egl.eglSwapBuffers(dp->disp.dpy, s->surface);
 }
 
-- 
cgit v1.1