virgl: introduce $VIRGL_DEBUG=verbose

This adds an environment-varaible that can be used for driver-specific
flags, as well as a flag for it to enable verbose output.

While we're at it, quiet some overly chatty debug-output by default.

Signed-off-by: Erik Faye-Lund <[email protected]>
Reviewed-By: Gert Wollny <[email protected]>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/gallium/drivers/virgl/virgl_screen.h b/src/gallium/drivers/virgl/virgl_screen.h
index dcf5816d603..8334d162424 100644
--- a/src/gallium/drivers/virgl/virgl_screen.h
+++ b/src/gallium/drivers/virgl/virgl_screen.h
@@ -27,6 +27,9 @@
 #include "util/slab.h"
 #include "virgl_winsys.h"
 
+#define VIRGL_DEBUG_VERBOSE 1
+extern int virgl_debug;
+
 struct virgl_screen {
    struct pipe_screen base;