Renderbuffer.cpp

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Author : Stuart Morgan
Date : 2019-08-14 12:25:12
Hash : 9d737966
Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/libANGLE/Renderbuffer.cpp

//
// Copyright 2002 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.
//

// Renderbuffer.cpp: Implements the renderer-agnostic gl::Renderbuffer class,
// GL renderbuffer objects and related functionality.
// [OpenGL ES 2.0.24] section 4.4.3 page 108.

#include "libANGLE/Renderbuffer.h"

#include "common/utilities.h"
#include "libANGLE/Context.h"
#include "libANGLE/FramebufferAttachment.h"
#include "libANGLE/Image.h"
#include "libANGLE/Renderbuffer.h"
#include "libANGLE/Texture.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/GLImplFactory.h"
#include "libANGLE/renderer/d3d/RenderTargetD3D.h"

namespace gl
{
// RenderbufferState implementation.
RenderbufferState::RenderbufferState()
    : mWidth(0), mHeight(0), mFormat(GL_RGBA4), mSamples(0), mInitState(InitState::MayNeedInit)
{}

RenderbufferState::~RenderbufferState() {}

GLsizei RenderbufferState::getWidth() const
{
    return mWidth;
}

GLsizei RenderbufferState::getHeight() const
{
    return mHeight;
}

const Format &RenderbufferState::getFormat() const
{
    return mFormat;
}

GLsizei RenderbufferState::getSamples() const
{
    return mSamples;
}

void RenderbufferState::update(GLsizei width,
                               GLsizei height,
                               const Format &format,
                               GLsizei samples,
                               InitState initState)
{
    mWidth     = static_cast<GLsizei>(width);
    mHeight    = static_cast<GLsizei>(height);
    mFormat    = format;
    mSamples   = samples;
    mInitState = InitState::MayNeedInit;
}

// Renderbuffer implementation.
Renderbuffer::Renderbuffer(rx::GLImplFactory *implFactory, RenderbufferID id)
    : RefCountObject(id.value),
      mState(),
      mImplementation(implFactory->createRenderbuffer(mState)),
      mLabel()
{}

void Renderbuffer::onDestroy(const Context *context)
{
    (void)(orphanImages(context));

    if (mImplementation)
    {
        mImplementation->onDestroy(context);
    }
}

Renderbuffer::~Renderbuffer() {}

void Renderbuffer::setLabel(const Context *context, const std::string &label)
{
    mLabel = label;
}

const std::string &Renderbuffer::getLabel() const
{
    return mLabel;
}

angle::Result Renderbuffer::setStorage(const Context *context,
                                       GLenum internalformat,
                                       size_t width,
                                       size_t height)
{
    ANGLE_TRY(orphanImages(context));
    ANGLE_TRY(mImplementation->setStorage(context, internalformat, width, height));

    mState.update(static_cast<GLsizei>(width), static_cast<GLsizei>(height), Format(internalformat),
                  0, InitState::MayNeedInit);
    onStateChange(angle::SubjectMessage::SubjectChanged);

    return angle::Result::Continue;
}

angle::Result Renderbuffer::setStorageMultisample(const Context *context,
                                                  size_t samples,
                                                  GLenum internalformat,
                                                  size_t width,
                                                  size_t height)
{
    ANGLE_TRY(orphanImages(context));
    ANGLE_TRY(
        mImplementation->setStorageMultisample(context, samples, internalformat, width, height));

    mState.update(static_cast<GLsizei>(width), static_cast<GLsizei>(height), Format(internalformat),
                  static_cast<GLsizei>(samples), InitState::MayNeedInit);
    onStateChange(angle::SubjectMessage::SubjectChanged);

    return angle::Result::Continue;
}

angle::Result Renderbuffer::setStorageEGLImageTarget(const Context *context, egl::Image *image)
{
    ANGLE_TRY(orphanImages(context));
    ANGLE_TRY(mImplementation->setStorageEGLImageTarget(context, image));

    setTargetImage(context, image);

    mState.update(static_cast<GLsizei>(image->getWidth()), static_cast<GLsizei>(image->getHeight()),
                  Format(image->getFormat()), 0, image->sourceInitState());
    onStateChange(angle::SubjectMessage::SubjectChanged);

    return angle::Result::Continue;
}

rx::RenderbufferImpl *Renderbuffer::getImplementation() const
{
    ASSERT(mImplementation);
    return mImplementation.get();
}

GLsizei Renderbuffer::getWidth() const
{
    return mState.mWidth;
}

GLsizei Renderbuffer::getHeight() const
{
    return mState.mHeight;
}

const Format &Renderbuffer::getFormat() const
{
    return mState.mFormat;
}

GLsizei Renderbuffer::getSamples() const
{
    return mState.mSamples;
}

GLuint Renderbuffer::getRedSize() const
{
    return mState.mFormat.info->redBits;
}

GLuint Renderbuffer::getGreenSize() const
{
    return mState.mFormat.info->greenBits;
}

GLuint Renderbuffer::getBlueSize() const
{
    return mState.mFormat.info->blueBits;
}

GLuint Renderbuffer::getAlphaSize() const
{
    return mState.mFormat.info->alphaBits;
}

GLuint Renderbuffer::getDepthSize() const
{
    return mState.mFormat.info->depthBits;
}

GLuint Renderbuffer::getStencilSize() const
{
    return mState.mFormat.info->stencilBits;
}

GLint Renderbuffer::getMemorySize() const
{
    GLint implSize = mImplementation->getMemorySize();
    if (implSize > 0)
    {
        return implSize;
    }

    // Assume allocated size is around width * height * samples * pixelBytes
    angle::CheckedNumeric<GLint> size = 1;
    size *= mState.mFormat.info->pixelBytes;
    size *= mState.mWidth;
    size *= mState.mHeight;
    size *= std::max(mState.mSamples, 1);
    return size.ValueOrDefault(std::numeric_limits<GLint>::max());
}

void Renderbuffer::onAttach(const Context *context)
{
    addRef();
}

void Renderbuffer::onDetach(const Context *context)
{
    release(context);
}

GLuint Renderbuffer::getId() const
{
    return id();
}

Extents Renderbuffer::getAttachmentSize(const gl::ImageIndex & /*imageIndex*/) const
{
    return Extents(mState.mWidth, mState.mHeight, 1);
}

Format Renderbuffer::getAttachmentFormat(GLenum /*binding*/,
                                         const ImageIndex & /*imageIndex*/) const
{
    return getFormat();
}
GLsizei Renderbuffer::getAttachmentSamples(const ImageIndex & /*imageIndex*/) const
{
    return getSamples();
}

bool Renderbuffer::isRenderable(const Context *context,
                                GLenum binding,
                                const ImageIndex &imageIndex) const
{
    if (isEGLImageTarget())
    {
        return ImageSibling::isRenderable(context, binding, imageIndex);
    }
    return getFormat().info->renderbufferSupport(context->getClientVersion(),
                                                 context->getExtensions());
}

InitState Renderbuffer::initState(const gl::ImageIndex & /*imageIndex*/) const
{
    if (isEGLImageTarget())
    {
        return sourceEGLImageInitState();
    }

    return mState.mInitState;
}

void Renderbuffer::setInitState(const gl::ImageIndex & /*imageIndex*/, InitState initState)
{
    if (isEGLImageTarget())
    {
        setSourceEGLImageInitState(initState);
    }
    else
    {
        mState.mInitState = initState;
    }
}

rx::FramebufferAttachmentObjectImpl *Renderbuffer::getAttachmentImpl() const
{
    return mImplementation.get();
}

}  // namespace gl

kc3-lang/angle/src/libANGLE/Renderbuffer.cpp

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kc3-lang/angle /src/libANGLE/Renderbuffer.cpp