monado/src/xrt/compositor/client/comp_egl_glue.c
2020-08-13 17:34:05 -05:00

88 lines
2.4 KiB
C

// Copyright 2019, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
* @file
* @brief Glue code to EGL client side glue code.
* @author Drew DeVault <sir@cmpwn.com>
* @author Simon Ser <contact@emersion.fr>
* @ingroup comp_client
*/
#include <xrt/xrt_config_os.h>
#include <xrt/xrt_config_have.h>
#include "ogl/egl_api.h"
#include "ogl/ogl_api.h"
#include <stdio.h>
#include <stdlib.h>
#include "client/comp_gl_client.h"
#include "client/comp_gl_memobj_swapchain.h"
#include "client/comp_gl_eglimage_swapchain.h"
#include "util/u_misc.h"
#include "xrt/xrt_gfx_egl.h"
#ifndef XRT_HAVE_EGL
#error "This file shouldn't be compiled without EGL"
#endif
// Not forward declared by mesa
typedef EGLBoolean EGLAPIENTRY (*PFNEGLMAKECURRENTPROC)(EGLDisplay dpy,
EGLSurface draw,
EGLSurface read,
EGLContext ctx);
static void
client_egl_compositor_destroy(struct xrt_compositor *xc)
{
struct client_gl_compositor *c = client_gl_compositor(xc);
// Pipe down call into native compositor.
xrt_comp_native_destroy(&c->xcn);
free(c);
}
struct xrt_compositor_gl *
xrt_gfx_provider_create_gl_egl(struct xrt_compositor_native *xcn,
EGLDisplay display,
EGLConfig config,
EGLContext context,
PFNEGLGETPROCADDRESSPROC get_gl_procaddr)
{
#if defined(XRT_HAVE_OPENGL)
gladLoadGL(get_gl_procaddr);
#elif defined(XRT_HAVE_OPENGLES)
gladLoadGLES2(get_gl_procaddr);
#endif
gladLoadEGL(display, get_gl_procaddr);
if (!eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, context)) {
fprintf(stderr, "Failed to make EGL context current\n");
return NULL;
}
struct client_gl_compositor *c =
U_TYPED_CALLOC(struct client_gl_compositor);
#if defined(XRT_OS_ANDROID)
client_gl_swapchain_create_func sc_create = NULL;
#else
client_gl_swapchain_create_func sc_create =
client_gl_memobj_swapchain_create;
if (!GLAD_GL_EXT_memory_object && GLAD_EGL_EXT_image_dma_buf_import) {
sc_create = client_gl_eglimage_swapchain_create;
}
#endif
if (!client_gl_compositor_init(c, xcn, get_gl_procaddr, sc_create)) {
free(c);
fprintf(stderr, "Failed to initialize compositor\n");
return NULL;
}
c->base.base.destroy = client_egl_compositor_destroy;
return &c->base;
}