Add some notes on GPU performance.

[nageru] / glwidget.cpp

diff --git a/glwidget.cpp b/glwidget.cpp
index 3cd63585633d8bb314376d6600f1de435f82d6b3..daadaf2f8d0e222efca7403e60226e20e86bfa46 100644 (file)
--- a/glwidget.cpp
+++ b/glwidget.cpp
@@ -71,12 +71,17 @@ void GLWidget::paintGL()
        Mixer::DisplayFrame frame;
        if (!global_mixer->get_display_frame(output, &frame)) {
                glClearColor(0.0f, 1.0f, 0.0f, 1.0f);
+               check_error();
                glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+               check_error();
                return;
        }
 
+       check_error();
        glWaitSync(frame.ready_fence.get(), /*flags=*/0, GL_TIMEOUT_IGNORED);
+       check_error();
        frame.setup_chain();
+       check_error();
        frame.chain->render_to_screen();
        check_error();
 }