Mesa (master): st/va: add enviromental variable to disable interlace

[Christian König]

Module: Mesa
Branch: master
Commit: 10dec2de2d9f568675d66d736b48701fa26f7b50
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=10dec2de2d9f568675d66d736b48701fa26f7b50

Author: Boyuan Zhang <boyuan.zhang at amd.com>
Date:   Thu Jul 21 19:40:20 2016 -0400

st/va: add enviromental variable to disable interlace

Add environmental variable to disable interlace mode. At VAAPI decoding stage, driver can not distinguish b/w pure decoding case and transcoding case. And since interlace encoding is not supported, we have to disable interlace for transcoding case. The temporary solution is to use enviromental variable to disable interlace mode.

Signed-off-by: Boyuan Zhang <boyuan.zhang at amd.com>

---

 src/gallium/state_trackers/va/surface.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gallium/state_trackers/va/surface.c b/src/gallium/state_trackers/va/surface.c
index 8ce4143..63727b6 100644
--- a/src/gallium/state_trackers/va/surface.c
+++ b/src/gallium/state_trackers/va/surface.c
@@ -43,6 +43,8 @@
 
 #include "va_private.h"
 
+DEBUG_GET_ONCE_BOOL_OPTION(nointerlace, "VAAPI_DISABLE_INTERLACE", FALSE);
+
 #include <va/va_drmcommon.h>
 
 static const enum pipe_format vpp_surface_formats[] = {
@@ -620,6 +622,8 @@ vlVaCreateSurfaces2(VADriverContextP ctx, unsigned int format,
 
    templat.width = width;
    templat.height = height;
+   if (debug_get_option_nointerlace())
+      templat.interlaced = false;
 
    memset(surfaces, VA_INVALID_ID, num_surfaces * sizeof(VASurfaceID));