[Mesa-dev] [PATCH] egl: add EGL_WAYLAND_Y_INVERTED_WL attribute

[Stanislav Vorobiov]

This enables querying of wl_buffer's orientation
---
 docs/specs/WL_bind_wayland_display.spec |   17 +++++++++++++++++
 include/EGL/eglmesaext.h                |    2 ++
 2 files changed, 19 insertions(+)

diff --git a/docs/specs/WL_bind_wayland_display.spec b/docs/specs/WL_bind_wayland_display.spec
index 8f0083c..47cf5cd 100644
--- a/docs/specs/WL_bind_wayland_display.spec
+++ b/docs/specs/WL_bind_wayland_display.spec
@@ -76,6 +76,10 @@ New Tokens
         EGL_TEXTURE_Y_UV_WL                     0x31D8
         EGL_TEXTURE_Y_XUXV_WL                   0x31D9
 
+    Accepted in the <attribute> parameter of eglQueryWaylandBufferWL:
+
+        EGL_WAYLAND_Y_INVERTED_WL               0x31DB
+
 
 Additions to the EGL 1.4 Specification:
 
@@ -157,6 +161,16 @@ Additions to the EGL 1.4 Specification:
     Further, eglQueryWaylandBufferWL accepts attributes EGL_WIDTH and
     EGL_HEIGHT to query the width and height of the wl_buffer.
 
+    Also, eglQueryWaylandBufferWL may accept
+    EGL_WAYLAND_Y_INVERTED_WL attribute to query orientation of
+    wl_buffer. If EGL_WAYLAND_Y_INVERTED_WL is supported
+    eglQueryWaylandBufferWL returns EGL_TRUE and value is a boolean
+    that tells if wl_buffer is y-inverted or not. If
+    EGL_WAYLAND_Y_INVERTED_WL is not supported
+    eglQueryWaylandBufferWL returns EGL_FALSE, in that case
+    wl_buffer should be treated as if value of
+    EGL_WAYLAND_Y_INVERTED_WL was EGL_TRUE.
+
 Issues
 
 Revision History
@@ -177,3 +191,6 @@ Revision History
         Change eglQueryWaylandBufferWL to take a resource pointer to the
         buffer instead of a pointer to a struct wl_buffer, as the latter has
         been deprecated. (Ander Conselvan de Oliveira)
+    Version 6, September 16, 2013
+        Add EGL_WAYLAND_Y_INVERTED_WL attribute to allow specifying
+        wl_buffer's orientation.
diff --git a/include/EGL/eglmesaext.h b/include/EGL/eglmesaext.h
index e0eae28..1f07d4c 100644
--- a/include/EGL/eglmesaext.h
+++ b/include/EGL/eglmesaext.h
@@ -115,6 +115,8 @@ typedef EGLDisplay (EGLAPIENTRYP PFNEGLGETDRMDISPLAYMESA) (int fd);
 #define EGL_WAYLAND_BUFFER_WL		0x31D5 /* eglCreateImageKHR target */
 #define EGL_WAYLAND_PLANE_WL		0x31D6 /* eglCreateImageKHR target */
 
+#define EGL_WAYLAND_Y_INVERTED_WL	0x31DB /* eglQueryWaylandBufferWL attribute */
+
 #define EGL_TEXTURE_Y_U_V_WL            0x31D7
 #define EGL_TEXTURE_Y_UV_WL             0x31D8
 #define EGL_TEXTURE_Y_XUXV_WL           0x31D9
-- 
1.7.9.5