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//
// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// DisplayGL.h: GL implementation of egl::Display
#include "libANGLE/renderer/gl/DisplayGL.h"
#include "libANGLE/AttributeMap.h"
#include "libANGLE/Context.h"
#include "libANGLE/Display.h"
#include "libANGLE/Surface.h"
#include "libANGLE/renderer/gl/ContextGL.h"
#include "libANGLE/renderer/gl/RendererGL.h"
#include "libANGLE/renderer/gl/StateManagerGL.h"
#include "libANGLE/renderer/gl/SurfaceGL.h"
#include <EGL/eglext.h>
namespace rx
{
DisplayGL::DisplayGL() : mRenderer(nullptr), mCurrentDrawSurface(nullptr)
{
}
DisplayGL::~DisplayGL()
{
}
egl::Error DisplayGL::initialize(egl::Display *display)
{
mRenderer = new RendererGL(getFunctionsGL(), display->getAttributeMap());
const gl::Version &maxVersion = mRenderer->getMaxSupportedESVersion();
if (maxVersion < gl::Version(2, 0))
{
return egl::Error(EGL_NOT_INITIALIZED, "OpenGL ES 2.0 is not supportable.");
}
return egl::Error(EGL_SUCCESS);
}
void DisplayGL::terminate()
{
SafeDelete(mRenderer);
}
ImageImpl *DisplayGL::createImage(EGLenum target,
egl::ImageSibling *buffer,
const egl::AttributeMap &attribs)
{
UNIMPLEMENTED();
return nullptr;
}
ContextImpl *DisplayGL::createContext(const gl::ContextState &state)
{
ASSERT(mRenderer != nullptr);
return new ContextGL(state, mRenderer);
}
StreamProducerImpl *DisplayGL::createStreamProducerD3DTextureNV12(
egl::Stream::ConsumerType consumerType,
const egl::AttributeMap &attribs)
{
UNIMPLEMENTED();
return nullptr;
}
egl::Error DisplayGL::makeCurrent(egl::Surface *drawSurface, egl::Surface *readSurface, gl::Context *context)
{
// Notify the previous surface (if it still exists) that it is no longer current
if (mCurrentDrawSurface && mSurfaceSet.find(mCurrentDrawSurface) != mSurfaceSet.end())
{
ANGLE_TRY(GetImplAs<SurfaceGL>(mCurrentDrawSurface)->unMakeCurrent());
}
mCurrentDrawSurface = nullptr;
if (!drawSurface)
{
return egl::Error(EGL_SUCCESS);
}
// Pause transform feedback before making a new surface current, to workaround anglebug.com/1426
ContextGL *glContext = GetImplAs<ContextGL>(context);
glContext->getStateManager()->pauseTransformFeedback(context->getContextState());
SurfaceGL *glDrawSurface = GetImplAs<SurfaceGL>(drawSurface);
ANGLE_TRY(glDrawSurface->makeCurrent());
mCurrentDrawSurface = drawSurface;
return egl::Error(EGL_SUCCESS);
}
gl::Version DisplayGL::getMaxSupportedESVersion() const
{
ASSERT(mRenderer != nullptr);
return mRenderer->getMaxSupportedESVersion();
}
}
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