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/*
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef GLIMP_EGL_DISPLAY_IMPL_H_
#define GLIMP_EGL_DISPLAY_IMPL_H_
#include <EGL/egl.h>
#include <set>
#include "glimp/egl/attrib_map.h"
#include "glimp/egl/config.h"
#include "glimp/egl/surface.h"
#include "glimp/gles/context_impl.h"
#include "nb/scoped_ptr.h"
namespace glimp {
namespace egl {
// All platform-specific aspects of a EGL Display are implemented within
// subclasses of DisplayImpl. Platforms must also implement
// DisplayImpl::Create(), declared below, in order to define how
// platform-specific DisplayImpls are to be created.
class DisplayImpl {
public:
// Return value type for the method GetVersionInfo().
struct VersionInfo {
int major;
int minor;
};
typedef std::set<Config*> ConfigSet;
virtual ~DisplayImpl() {}
// Returns true if the given |native_display| is a valid display ID that can
// be subsequently passed into Create().
// To be implemented by each implementing platform.
static bool IsValidNativeDisplayType(EGLNativeDisplayType display_id);
// Creates and returns a new DisplayImpl object.
// To be implemented by each implementing platform.
static nb::scoped_ptr<DisplayImpl> Create(EGLNativeDisplayType display_id);
// Returns the EGL major and minor versions, if they are not NULL.
// Called by eglInitialize():
// https://www.khronos.org/registry/egl/sdk/docs/man/html/eglInitialize.xhtml
virtual VersionInfo GetVersionInfo() = 0;
// Returns *all* configs for this display that may be chosen via a call to
// eglChooseConfig().
// https://www.khronos.org/registry/egl/sdk/docs/man/html/eglChooseConfig.xhtml
virtual const ConfigSet& GetSupportedConfigs() const = 0;
// Creates and returns a SurfaceImpl object that represents the surface of a
// window and is compatible with this DisplayImpl object. This will be called
// when eglCreateWindowSurface() is called.
// https://www.khronos.org/registry/egl/sdk/docs/man/html/eglCreateWindowSurface.xhtml
virtual nb::scoped_ptr<SurfaceImpl> CreateWindowSurface(
const Config* config,
EGLNativeWindowType win,
const AttribMap& attributes) = 0;
// Creates and returns a SurfaceImpl object that represents the surface of a
// Pbuffer and is compatible with this DisplayImpl object. This will be
// called when eglCreatePbufferSurface() is called.
// https://www.khronos.org/registry/egl/sdk/docs/man/html/eglCreatePbufferSurface.xhtml
virtual nb::scoped_ptr<SurfaceImpl> CreatePbufferSurface(
const Config* config,
const AttribMap& attributes) = 0;
// Creates and returns a gles::ContextImpl object that contains the platform
// specific implementation of a GL ES Context, of the specified version that
// is compatible with the specified config.
virtual nb::scoped_ptr<gles::ContextImpl> CreateContext(const Config* config,
int gles_version) = 0;
private:
};
} // namespace egl
} // namespace glimp
#endif // GLIMP_EGL_DISPLAY_IMPL_H_