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egl: Add helpers for importing Wayland buffers as EGLImage's

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=773629
This commit is contained in:
Jonas Ådahl 2016-10-20 14:15:28 +08:00
parent ecc1f56009
commit 659c987335
3 changed files with 121 additions and 0 deletions
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28
src/backends/meta-egl-ext.h
View file

@ -30,6 +30,34 @@
#include <EGL/egl.h>
#include <EGL/eglext.h>
/*
* This is a little different to the tests shipped with EGL implementations,
* which wrap the entire thing in #ifndef EGL_WL_bind_wayland_display, then go
* on to define both BindWaylandDisplay and QueryWaylandBuffer.
*
* Unfortunately, some implementations (particularly the version of Mesa shipped
* in Ubuntu 12.04) define EGL_WL_bind_wayland_display, but then only provide
* prototypes for (Un)BindWaylandDisplay, completely omitting
* QueryWaylandBuffer.
*
* Detect this, and provide our own definitions if necessary.
*/
#ifndef EGL_WAYLAND_BUFFER_WL
#define EGL_WAYLAND_BUFFER_WL 0x31D5 /* eglCreateImageKHR target */
#define EGL_WAYLAND_PLANE_WL 0x31D6 /* eglCreateImageKHR target */
#define EGL_TEXTURE_Y_U_V_WL 0x31D7
#define EGL_TEXTURE_Y_UV_WL 0x31D8
#define EGL_TEXTURE_Y_XUXV_WL 0x31D9
#define EGL_TEXTURE_EXTERNAL_WL 0x31DA
struct wl_resource;
#ifdef EGL_EGLEXT_PROTOTYPES
EGLAPI EGLBoolean EGLAPIENTRY eglQueryWaylandBufferWL(EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
#endif
typedef EGLBoolean (EGLAPIENTRYP PFNEGLQUERYWAYLANDBUFFERWL) (EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
#endif
/*
* FIXME: Remove both EGL_EXT_stream_acquire_mode and
* EGL_NV_output_drm_flip_event definitions below once both extensions

73
src/backends/meta-egl.c
View file

@ -41,6 +41,11 @@ struct _MetaEgl
PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT;
PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR;
PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR;
PFNEGLQUERYWAYLANDBUFFERWL eglQueryWaylandBufferWL;
PFNEGLQUERYDEVICESEXTPROC eglQueryDevicesEXT;
PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT;
@ -327,6 +332,69 @@ meta_egl_get_platform_display (MetaEgl *egl,
return display;
}
EGLImageKHR
meta_egl_create_image (MetaEgl *egl,
EGLDisplay display,
EGLContext context,
EGLenum target,
EGLClientBuffer buffer,
const EGLint *attrib_list,
GError **error)
{
EGLImageKHR image;
if (!is_egl_proc_valid (egl->eglCreateImageKHR, error))
return EGL_NO_IMAGE_KHR;
image = egl->eglCreateImageKHR (display, context,
target, buffer, attrib_list);
if (image == EGL_NO_IMAGE_KHR)
{
set_egl_error (error);
return EGL_NO_IMAGE_KHR;
}
return image;
}
gboolean
meta_egl_destroy_image (MetaEgl *egl,
EGLDisplay display,
EGLImageKHR image,
GError **error)
{
if (!is_egl_proc_valid (egl->eglDestroyImageKHR, error))
return FALSE;
if (!egl->eglDestroyImageKHR (display, image))
{
set_egl_error (error);
return FALSE;
}
return TRUE;
}
gboolean
meta_egl_query_wayland_buffer (MetaEgl *egl,
EGLDisplay display,
struct wl_resource *buffer,
EGLint attribute,
EGLint *value,
GError **error)
{
if (!is_egl_proc_valid (egl->eglQueryWaylandBufferWL, error))
return FALSE;
if (!egl->eglQueryWaylandBufferWL (display, buffer, attribute, value))
{
set_egl_error (error);
return FALSE;
}
return TRUE;
}
gboolean
meta_egl_query_devices (MetaEgl *egl,
EGLint max_devices,
@ -604,6 +672,11 @@ meta_egl_constructed (GObject *object)
GET_EGL_PROC_ADDR_REQUIRED (eglGetPlatformDisplayEXT);
GET_EGL_PROC_ADDR (eglCreateImageKHR);
GET_EGL_PROC_ADDR (eglDestroyImageKHR);
GET_EGL_PROC_ADDR (eglQueryWaylandBufferWL);
GET_EGL_PROC_ADDR (eglQueryDevicesEXT);
GET_EGL_PROC_ADDR (eglQueryDeviceStringEXT);

20
src/backends/meta-egl.h
View file

@ -48,6 +48,19 @@ gboolean meta_egl_choose_config (MetaEgl *egl,
EGLConfig *chosen_config,
GError **error);
EGLImageKHR meta_egl_create_image (MetaEgl *egl,
EGLDisplay display,
EGLContext context,
EGLenum target,
EGLClientBuffer buffer,
const EGLint *attrib_list,
GError **error);
gboolean meta_egl_destroy_image (MetaEgl *egl,
EGLDisplay display,
EGLImageKHR image,
GError **error);
EGLSurface meta_egl_create_pbuffer_surface (MetaEgl *egl,
EGLDisplay display,
EGLConfig config,
@ -60,6 +73,13 @@ EGLDisplay meta_egl_get_platform_display (MetaEgl *egl,
const EGLint *attrib_list,
GError **error);
gboolean meta_egl_query_wayland_buffer (MetaEgl *egl,
EGLDisplay display,
struct wl_resource *buffer,
EGLint attribute,
EGLint *value,
GError **error);
gboolean meta_egl_query_devices (MetaEgl *egl,
EGLint max_devices,
EGLDeviceEXT *devices,