Version
- Version 1, March 1, 2011
+ Version 5, July 16, 2013
Number
struct wl_display *display);
EGLBoolean eglQueryWaylandBufferWL(EGLDisplay dpy,
- struct wl_buffer *buffer,
+ struct wl_resource *buffer,
EGLint attribute, EGLint *value);
New Tokens
EGL_TEXTURE_Y_U_V_WL 0x31D7
EGL_TEXTURE_Y_UV_WL 0x31D8
EGL_TEXTURE_Y_XUXV_WL 0x31D9
+ EGL_TEXTURE_EXTERNAL_WL 0x31DA
+
+ Accepted in the <attribute> parameter of eglQueryWaylandBufferWL:
+
+ EGL_TEXTURE_FORMAT 0x3080
+ EGL_WAYLAND_Y_INVERTED_WL 0x31DB
Additions to the EGL 1.4 Specification:
Two planes, samples Y from the first plane to r in
the shader, U and V from the second plane to g and a.
+ EGL_TEXTURE_EXTERNAL_WL
+ Treated as a single plane texture, but sampled with
+ samplerExternalOES according to OES_EGL_image_external
+
After querying the wl_buffer layout, create EGLImages for the
planes by calling eglCreateImageKHR with wl_buffer as
EGLClientBuffer, EGL_WAYLAND_BUFFER_WL as the target, NULL
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
Use EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGB, and EGL_TEXTURE_RGBA,
and just define the new YUV texture formats. Add support for
EGL_WIDTH and EGL_HEIGHT in the query attributes (Kristian Høgsberg)
+ Version 5, July 16, 2013
+ 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.