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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 <stdlib.h>
#include "wcore_error.h"
#include "linux_platform.h"
#include "glx_display.h"
#include "glx_platform.h"
bool
glx_display_destroy(struct wcore_display *wc_self)
{
struct glx_display *self = glx_display(wc_self);
bool ok = true;
if (!self)
return ok;
ok &= x11_display_teardown(&self->x11);
ok &= wcore_display_teardown(&self->wcore);
free(self);
return ok;
}
static bool
glx_display_set_extensions(struct glx_display *self)
{
const char *s = glXGetClientString(self->x11.xlib, GLX_EXTENSIONS);
if (!s) {
wcore_errorf(WAFFLE_ERROR_UNKNOWN,
"glXQueryExtensionsString failed");
return false;
}
self->ARB_create_context = waffle_is_extension_in_string(s, "GLX_ARB_create_context");
self->ARB_create_context_profile = waffle_is_extension_in_string(s, "GLX_ARB_create_context_profile");
self->EXT_create_context_es_profile = waffle_is_extension_in_string(s, "GLX_EXT_create_context_es_profile");
// The GLX_EXT_create_context_es2_profile spec, version 4 2012/03/28,
// states that GLX_EXT_create_context_es_profile is an alias of
// GLX_EXT_create_context_es2_profile and requires that both names must be
// exported together for backwards compatibility with clients that expect
// the es2_profile name.
if (self->EXT_create_context_es_profile) {
self->EXT_create_context_es2_profile = true;
}
else {
// Assume that GLX does not implement version 3 of the extension, in
// which case the ES contexts GLX is capable of creating is ES2.
self->EXT_create_context_es2_profile = waffle_is_extension_in_string(s, "GLX_EXT_create_context_es2_profile");
}
return true;
}
struct wcore_display*
glx_display_connect(struct wcore_platform *wc_plat,
const char *name)
{
struct glx_display *self;
bool ok = true;
self = wcore_calloc(sizeof(*self));
if (self == NULL)
return NULL;
ok = wcore_display_init(&self->wcore, wc_plat);
if (!ok)
goto error;
ok = x11_display_init(&self->x11, name);
if (!ok)
goto error;
ok = glx_display_set_extensions(self);
if (!ok)
goto error;
return &self->wcore;
error:
glx_display_destroy(&self->wcore);
return NULL;
}
bool
glx_display_supports_context_api(struct wcore_display *wc_self,
int32_t context_api)
{
struct glx_display *self = glx_display(wc_self);
struct glx_platform *plat = glx_platform(wc_self->platform);
switch (context_api) {
case WAFFLE_CONTEXT_OPENGL:
return true;
case WAFFLE_CONTEXT_OPENGL_ES1:
return self->EXT_create_context_es_profile
&& linux_platform_dl_can_open(plat->linux,
WAFFLE_DL_OPENGL_ES1);
case WAFFLE_CONTEXT_OPENGL_ES2:
return self->EXT_create_context_es2_profile
&& linux_platform_dl_can_open(plat->linux,
WAFFLE_DL_OPENGL_ES2);
case WAFFLE_CONTEXT_OPENGL_ES3:
return self->EXT_create_context_es_profile
&& linux_platform_dl_can_open(plat->linux,
WAFFLE_DL_OPENGL_ES3);
default:
wcore_error_internal("waffle_context_api has bad value %#x",
context_api);
return false;
}
}
union waffle_native_display*
glx_display_get_native(struct wcore_display *wc_self)
{
struct glx_display *self = glx_display(wc_self);
union waffle_native_display *n_dpy;
WCORE_CREATE_NATIVE_UNION(n_dpy, glx);
if (!n_dpy)
return NULL;
n_dpy->glx->xlib_display = self->x11.xlib;
return n_dpy;
}
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