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// Copyright 2012 Intel Corporation
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// - Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// - Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <assert.h>
#include "wcore_error.h"
#include "wcore_platform.h"
#include "wegl_display.h"
#include "wegl_util.h"
static bool
get_extensions(struct wegl_display *dpy)
{
const char *extensions = eglQueryString(dpy->egl, EGL_EXTENSIONS);
if (!extensions) {
wegl_emit_error("eglQueryString(EGL_EXTENSIONS");
return false;
}
// waffle_is_extension_in_string() resets the error state. That's ok,
// however, because if we've reached this point then no error should be
// pending emission.
assert(wcore_error_get_code() == 0);
dpy->KHR_create_context = waffle_is_extension_in_string(extensions, "EGL_KHR_create_context");
return true;
}
/// On Linux, according to eglplatform.h, EGLNativeDisplayType and intptr_t
/// have the same size regardless of platform.
bool
wegl_display_init(struct wegl_display *dpy,
struct wcore_platform *wc_plat,
intptr_t native_display)
{
bool ok;
EGLint major, minor;
ok = wcore_display_init(&dpy->wcore, wc_plat);
if (!ok)
goto fail;
dpy->egl = eglGetDisplay((EGLNativeDisplayType) native_display);
if (!dpy->egl)
goto fail;
ok = eglInitialize(dpy->egl, &major, &minor);
if (!ok)
goto fail;
ok = get_extensions(dpy);
if (!ok)
goto fail;
return true;
fail:
wegl_display_teardown(dpy);
return false;
}
bool
wegl_display_teardown(struct wegl_display *dpy)
{
bool ok = true;
if (dpy->egl) {
ok = eglTerminate(dpy->egl);
if (!ok)
wegl_emit_error("eglTerminate");
}
return ok;
}
bool
wegl_display_supports_context_api(struct wcore_display *wc_dpy,
int32_t waffle_context_api)
{
struct wegl_display *dpy = wegl_display(wc_dpy);
struct wcore_platform *wc_plat = dpy->wcore.platform;
int32_t waffle_dl;
switch (waffle_context_api) {
case WAFFLE_CONTEXT_OPENGL:
waffle_dl = WAFFLE_DL_OPENGL;
break;
case WAFFLE_CONTEXT_OPENGL_ES1:
waffle_dl = WAFFLE_DL_OPENGL_ES1;
break;
case WAFFLE_CONTEXT_OPENGL_ES2:
waffle_dl = WAFFLE_DL_OPENGL_ES2;
break;
case WAFFLE_CONTEXT_OPENGL_ES3:
if (!dpy->KHR_create_context)
return false;
waffle_dl = WAFFLE_DL_OPENGL_ES3;
break;
default:
wcore_error_internal("waffle_context_api has bad value %#x",
waffle_context_api);
return false;
}
return wc_plat->vtbl->dl_can_open(wc_plat, waffle_dl);
}
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