SurfaceNULL.cpp

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Author : Jamie Madill
Date : 2018-11-29 18:16:17
Hash : 7c985f5c
Message : Make angle::Result an enum. This moves away from a class type to a value type. This should improve performance when using angle::Result as a return value. Previously the generated code would return a pointer instead of a value. Improves performance in the most targeted microbenchmark by 10%. In more realistic scanarios it will have a smaller improvement. Also simplifies the class implementation and usage. Includes some unrelated code generation changes. Bug: angleproject:2491 Change-Id: Ifcf86870bf1c00a2f73c39ea6e4f05ca705050aa Reviewed-on: https://chromium-review.googlesource.com/c/1356139 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/libANGLE/renderer/null/SurfaceNULL.cpp

//
// Copyright 2016 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.
//
// SurfaceNULL.cpp:
//    Implements the class methods for SurfaceNULL.
//

#include "libANGLE/renderer/null/SurfaceNULL.h"

#include "common/debug.h"

#include "libANGLE/renderer/null/FramebufferNULL.h"

namespace rx
{

SurfaceNULL::SurfaceNULL(const egl::SurfaceState &surfaceState) : SurfaceImpl(surfaceState) {}

SurfaceNULL::~SurfaceNULL() {}

egl::Error SurfaceNULL::initialize(const egl::Display *display)
{
    return egl::NoError();
}

FramebufferImpl *SurfaceNULL::createDefaultFramebuffer(const gl::Context *context,
                                                       const gl::FramebufferState &state)
{
    return new FramebufferNULL(state);
}

egl::Error SurfaceNULL::swap(const gl::Context *context)
{
    return egl::NoError();
}

egl::Error SurfaceNULL::postSubBuffer(const gl::Context *context,
                                      EGLint x,
                                      EGLint y,
                                      EGLint width,
                                      EGLint height)
{
    return egl::NoError();
}

egl::Error SurfaceNULL::querySurfacePointerANGLE(EGLint attribute, void **value)
{
    UNREACHABLE();
    return egl::NoError();
}

egl::Error SurfaceNULL::bindTexImage(const gl::Context *context,
                                     gl::Texture *texture,
                                     EGLint buffer)
{
    return egl::NoError();
}

egl::Error SurfaceNULL::releaseTexImage(const gl::Context *context, EGLint buffer)
{
    return egl::NoError();
}

egl::Error SurfaceNULL::getSyncValues(EGLuint64KHR *ust, EGLuint64KHR *msc, EGLuint64KHR *sbc)
{
    UNIMPLEMENTED();
    return egl::EglBadAccess();
}

void SurfaceNULL::setSwapInterval(EGLint interval) {}

EGLint SurfaceNULL::getWidth() const
{
    // TODO(geofflang): Read from an actual window?
    return 100;
}

EGLint SurfaceNULL::getHeight() const
{
    // TODO(geofflang): Read from an actual window?
    return 100;
}

EGLint SurfaceNULL::isPostSubBufferSupported() const
{
    return EGL_TRUE;
}

EGLint SurfaceNULL::getSwapBehavior() const
{
    return EGL_BUFFER_PRESERVED;
}

angle::Result SurfaceNULL::initializeContents(const gl::Context *context,
                                              const gl::ImageIndex &imageIndex)
{
    return angle::Result::Continue;
}

}  // namespace rx

kc3-lang/angle/src/libANGLE/renderer/null/SurfaceNULL.cpp

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kc3-lang/angle /src/libANGLE/renderer/null/SurfaceNULL.cpp