TransformFeedback11.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.

//

// TransformFeedbackD3D.cpp is a no-op implementation for both the D3D9 and D3D11 renderers.

#include "libANGLE/renderer/d3d/d3d11/TransformFeedback11.h"

#include "libANGLE/Buffer.h"

#include "libANGLE/renderer/d3d/d3d11/Buffer11.h"

#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"

namespace rx

TransformFeedback11::TransformFeedback11(const gl::TransformFeedbackState &state,

                                         Renderer11 *renderer)

    : TransformFeedbackImpl(state),

      mRenderer(renderer),

      mIsDirty(true),

      mBuffers(state.getIndexedBuffers().size(), nullptr),

      mBufferOffsets(state.getIndexedBuffers().size(), 0),

      mSerial(mRenderer->generateSerial())

{}

TransformFeedback11::~TransformFeedback11() {}

angle::Result TransformFeedback11::begin(const gl::Context *context,

                                         gl::PrimitiveMode primitiveMode)

    // Reset all the cached offsets to the binding offsets

    mIsDirty = true;

    for (size_t bindingIdx = 0; bindingIdx < mBuffers.size(); bindingIdx++)

        const auto &binding = mState.getIndexedBuffer(bindingIdx);

        if (binding.get() != nullptr)

            mBufferOffsets[bindingIdx] = static_cast<UINT>(binding.getOffset());

        else

            mBufferOffsets[bindingIdx] = 0;

    mRenderer->getStateManager()->invalidateTransformFeedback();

    return angle::Result::Continue;

angle::Result TransformFeedback11::end(const gl::Context *context)

    mRenderer->getStateManager()->invalidateTransformFeedback();

    if (mRenderer->getFeatures().flushAfterEndingTransformFeedback.enabled)

        mRenderer->getDeviceContext()->Flush();

    return angle::Result::Continue;

angle::Result TransformFeedback11::pause(const gl::Context *context)

    mRenderer->getStateManager()->invalidateTransformFeedback();

    return angle::Result::Continue;

angle::Result TransformFeedback11::resume(const gl::Context *context)

    mRenderer->getStateManager()->invalidateTransformFeedback();

    return angle::Result::Continue;

angle::Result TransformFeedback11::bindIndexedBuffer(

    const gl::Context *context,

    size_t index,

    const gl::OffsetBindingPointer<gl::Buffer> &binding)

    mIsDirty              = true;

    mBufferOffsets[index] = static_cast<UINT>(binding.getOffset());

    mRenderer->getStateManager()->invalidateTransformFeedback();

    return angle::Result::Continue;

void TransformFeedback11::onApply()

    mIsDirty = false;

    // Change all buffer offsets to -1 so that if any of them need to be re-applied, the are set to

    // append

    std::fill(mBufferOffsets.begin(), mBufferOffsets.end(), -1);

bool TransformFeedback11::isDirty() const

    return mIsDirty;

UINT TransformFeedback11::getNumSOBuffers() const

    return static_cast<UINT>(mBuffers.size());

angle::Result TransformFeedback11::getSOBuffers(const gl::Context *context,

                                                const std::vector<ID3D11Buffer *> **buffersOut)

    for (size_t bindingIdx = 0; bindingIdx < mBuffers.size(); bindingIdx++)

        const auto &binding = mState.getIndexedBuffer(bindingIdx);

        if (binding.get() != nullptr)

            Buffer11 *storage = GetImplAs<Buffer11>(binding.get());

            ANGLE_TRY(storage->getBuffer(context, BUFFER_USAGE_VERTEX_OR_TRANSFORM_FEEDBACK,

                                         &mBuffers[bindingIdx]));

    *buffersOut = &mBuffers;

    return angle::Result::Continue;

const std::vector<UINT> &TransformFeedback11::getSOBufferOffsets() const

    return mBufferOffsets;

Serial TransformFeedback11::getSerial() const

    return mSerial;

}  // namespace rx