RenderbufferD3D.cpp

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//

// Copyright 2014 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.

//

// RenderbufferD3d.cpp: Implements the RenderbufferD3D class, a specialization of RenderbufferImpl

#include "libANGLE/renderer/d3d/RenderbufferD3D.h"

#include "libANGLE/Context.h"

#include "libANGLE/Image.h"

#include "libANGLE/renderer/d3d/ContextD3D.h"

#include "libANGLE/renderer/d3d/EGLImageD3D.h"

#include "libANGLE/renderer/d3d/RenderTargetD3D.h"

#include "libANGLE/renderer/d3d/RendererD3D.h"

namespace rx

RenderbufferD3D::RenderbufferD3D(const gl::RenderbufferState &state, RendererD3D *renderer)

    : RenderbufferImpl(state), mRenderer(renderer), mRenderTarget(nullptr), mImage(nullptr)

{}

RenderbufferD3D::~RenderbufferD3D()

    SafeDelete(mRenderTarget);

    mImage = nullptr;

void RenderbufferD3D::onDestroy(const gl::Context *context)

    SafeDelete(mRenderTarget);

angle::Result RenderbufferD3D::setStorage(const gl::Context *context,

                                          GLenum internalformat,

                                          GLsizei width,

                                          GLsizei height)

    return setStorageMultisample(context, 0, internalformat, width, height,

                                 gl::MultisamplingMode::Regular);

angle::Result RenderbufferD3D::setStorageMultisample(const gl::Context *context,

                                                     GLsizei samples,

                                                     GLenum internalformat,

                                                     GLsizei width,

                                                     GLsizei height,

                                                     gl::MultisamplingMode mode)

    // TODO: Correctly differentiate between normal multisampling and render to texture.  In the

    // latter case, the renderbuffer must be automatically resolved when rendering is broken and

    // operations performed on it (such as blit, copy etc) should use the resolved image.

    // http://anglebug.com/3107.

    // If the renderbuffer parameters are queried, the calling function

    // will expect one of the valid renderbuffer formats for use in

    // glRenderbufferStorage, but we should create depth and stencil buffers

    // as DEPTH24_STENCIL8

    GLenum creationFormat = internalformat;

    if (internalformat == GL_DEPTH_COMPONENT16 || internalformat == GL_STENCIL_INDEX8)

        creationFormat = GL_DEPTH24_STENCIL8_OES;

    // ANGLE_framebuffer_multisample states GL_OUT_OF_MEMORY is generated on a failure to create

    // the specified storage.

    // Because ES 3.0 already knows the exact number of supported samples, it would already have

    // been validated and generated GL_INVALID_VALUE.

    const gl::TextureCaps &formatCaps = mRenderer->getNativeTextureCaps().get(creationFormat);

    ANGLE_CHECK_GL_ALLOC(GetImplAs<ContextD3D>(context),

                         static_cast<uint32_t>(samples) <= formatCaps.getMaxSamples());

    RenderTargetD3D *newRT = nullptr;

    ANGLE_TRY(

        mRenderer->createRenderTarget(context, width, height, creationFormat, samples, &newRT));

    SafeDelete(mRenderTarget);

    mImage        = nullptr;

    mRenderTarget = newRT;

    return angle::Result::Continue;

angle::Result RenderbufferD3D::setStorageEGLImageTarget(const gl::Context *context,

                                                        egl::Image *image)

    mImage = GetImplAs<EGLImageD3D>(image);

    SafeDelete(mRenderTarget);

    return angle::Result::Continue;

angle::Result RenderbufferD3D::getRenderTarget(const gl::Context *context,

                                               RenderTargetD3D **outRenderTarget)

    if (mImage)

        return mImage->getRenderTarget(context, outRenderTarget);

    else

        *outRenderTarget = mRenderTarget;

        return angle::Result::Continue;

angle::Result RenderbufferD3D::getAttachmentRenderTarget(const gl::Context *context,

                                                         GLenum binding,

                                                         const gl::ImageIndex &imageIndex,

                                                         GLsizei samples,

                                                         FramebufferAttachmentRenderTarget **rtOut)

    return getRenderTarget(context, reinterpret_cast<RenderTargetD3D **>(rtOut));

angle::Result RenderbufferD3D::initializeContents(const gl::Context *context,

                                                  GLenum binding,

                                                  const gl::ImageIndex &imageIndex)

    RenderTargetD3D *renderTarget = nullptr;

    ANGLE_TRY(getRenderTarget(context, &renderTarget));

    return mRenderer->initRenderTarget(context, renderTarget);

}  // namespace rx