From e2b5041b272e0cb8b3c4c9d332b0bbc3dda05e69 Mon Sep 17 00:00:00 2001
From: "Ung, Teng En" <teng.en.ung@intel.com>
Date: Fri, 8 Oct 2021 14:38:45 +0000
Subject: [PATCH 3/3] sample_misc: use wayland dmabuf to render nv12

Upstream-Status: Submitted
innersource PR #269

---
 .../sample_misc/wayland/src/class_wayland.cpp      | 60 +++++++++++++++++-----
 1 file changed, 47 insertions(+), 13 deletions(-)

diff --git a/tools/legacy/sample_misc/wayland/src/class_wayland.cpp b/tools/legacy/sample_misc/wayland/src/class_wayland.cpp
index 7eac204..68fcea4 100644
--- a/tools/legacy/sample_misc/wayland/src/class_wayland.cpp
+++ b/tools/legacy/sample_misc/wayland/src/class_wayland.cpp
@@ -13,6 +13,7 @@
 #include <iostream>
 extern "C" {
 #include <drm.h>
+#include <drm_fourcc.h>
 #include <intel_bufmgr.h>
 #include <xf86drm.h>
 }
@@ -292,20 +293,53 @@ struct wl_buffer* Wayland::CreatePrimeBuffer(uint32_t name,
                                              int32_t offsets[3],
                                              int32_t pitches[3]) {
     struct wl_buffer* buffer = NULL;
-    if (NULL == m_drm)
-        return NULL;
 
-    buffer = wl_drm_create_prime_buffer(m_drm,
-                                        name,
-                                        width,
-                                        height,
-                                        format,
-                                        offsets[0],
-                                        pitches[0],
-                                        offsets[1],
-                                        pitches[1],
-                                        offsets[2],
-                                        pitches[2]);
+#if defined(WAYLAND_LINUX_DMABUF_SUPPORT)
+    if (format == WL_DRM_FORMAT_NV12) {
+        if(NULL == m_dmabuf)
+            return NULL;
+
+        struct zwp_linux_buffer_params_v1 *dmabuf_params = NULL;
+        int i = 0;
+        uint64_t modifier = I915_FORMAT_MOD_Y_TILED;
+
+        dmabuf_params = zwp_linux_dmabuf_v1_create_params(m_dmabuf);
+        for(i = 0; i < 2; i++) {
+            zwp_linux_buffer_params_v1_add(dmabuf_params,
+                                           name,
+                                           i,
+                                           offsets[i],
+                                           pitches[i],
+                                           modifier >> 32,
+                                           modifier & 0xffffffff);
+        }
+
+        buffer = zwp_linux_buffer_params_v1_create_immed(dmabuf_params,
+                                                         width,
+                                                         height,
+                                                         format,
+                                                         0);
+
+        zwp_linux_buffer_params_v1_destroy(dmabuf_params);
+    } else
+#endif
+    {
+        if(NULL == m_drm)
+            return NULL;
+
+        buffer = wl_drm_create_prime_buffer(m_drm,
+                                            name,
+                                            width,
+                                            height,
+                                            format,
+                                            offsets[0],
+                                            pitches[0],
+                                            offsets[1],
+                                            pitches[1],
+                                            offsets[2],
+                                            pitches[2]);
+    }
+
     return buffer;
 }
 
-- 
2.7.4