VertexBuffer11.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/renderer/d3d/d3d11/VertexBuffer11.cpp

//
// Copyright 2013 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.
//

// VertexBuffer11.cpp: Defines the D3D11 VertexBuffer implementation.

#include "libANGLE/renderer/d3d/d3d11/VertexBuffer11.h"

#include "libANGLE/Buffer.h"
#include "libANGLE/Context.h"
#include "libANGLE/VertexAttribute.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/d3d/d3d11/Buffer11.h"
#include "libANGLE/renderer/d3d/d3d11/Context11.h"
#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
#include "libANGLE/renderer/d3d/d3d11/formatutils11.h"
#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"

namespace rx
{

VertexBuffer11::VertexBuffer11(Renderer11 *const renderer)
    : mRenderer(renderer),
      mBuffer(),
      mBufferSize(0),
      mDynamicUsage(false),
      mMappedResourceData(nullptr)
{}

VertexBuffer11::~VertexBuffer11()
{
    ASSERT(mMappedResourceData == nullptr);
}

angle::Result VertexBuffer11::initialize(const gl::Context *context,
                                         unsigned int size,
                                         bool dynamicUsage)
{
    mBuffer.reset();
    updateSerial();

    if (size > 0)
    {
        D3D11_BUFFER_DESC bufferDesc;
        bufferDesc.ByteWidth           = size;
        bufferDesc.Usage               = D3D11_USAGE_DYNAMIC;
        bufferDesc.BindFlags           = D3D11_BIND_VERTEX_BUFFER;
        bufferDesc.CPUAccessFlags      = D3D11_CPU_ACCESS_WRITE;
        bufferDesc.MiscFlags           = 0;
        bufferDesc.StructureByteStride = 0;

        ANGLE_TRY(mRenderer->allocateResource(GetImplAs<Context11>(context), bufferDesc, &mBuffer));

        if (dynamicUsage)
        {
            mBuffer.setDebugName("VertexBuffer11 (dynamic)");
        }
        else
        {
            mBuffer.setDebugName("VertexBuffer11 (static)");
        }
    }

    mBufferSize   = size;
    mDynamicUsage = dynamicUsage;

    return angle::Result::Continue;
}

angle::Result VertexBuffer11::mapResource(const gl::Context *context)
{
    if (mMappedResourceData == nullptr)
    {
        D3D11_MAPPED_SUBRESOURCE mappedResource;

        ANGLE_TRY(mRenderer->mapResource(context, mBuffer.get(), 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0,
                                         &mappedResource));

        mMappedResourceData = static_cast<uint8_t *>(mappedResource.pData);
    }

    return angle::Result::Continue;
}

void VertexBuffer11::hintUnmapResource()
{
    if (mMappedResourceData != nullptr)
    {
        ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
        dxContext->Unmap(mBuffer.get(), 0);

        mMappedResourceData = nullptr;
    }
}

angle::Result VertexBuffer11::storeVertexAttributes(const gl::Context *context,
                                                    const gl::VertexAttribute &attrib,
                                                    const gl::VertexBinding &binding,
                                                    gl::VertexAttribType currentValueType,
                                                    GLint start,
                                                    size_t count,
                                                    GLsizei instances,
                                                    unsigned int offset,
                                                    const uint8_t *sourceData)
{
    ASSERT(mBuffer.valid());

    int inputStride = static_cast<int>(ComputeVertexAttributeStride(attrib, binding));

    // This will map the resource if it isn't already mapped.
    ANGLE_TRY(mapResource(context));

    uint8_t *output = mMappedResourceData + offset;

    const uint8_t *input = sourceData;

    if (instances == 0 || binding.getDivisor() == 0)
    {
        input += inputStride * start;
    }

    angle::FormatID vertexFormatID       = gl::GetVertexFormatID(attrib, currentValueType);
    const D3D_FEATURE_LEVEL featureLevel = mRenderer->getRenderer11DeviceCaps().featureLevel;
    const d3d11::VertexFormat &vertexFormatInfo =
        d3d11::GetVertexFormatInfo(vertexFormatID, featureLevel);
    ASSERT(vertexFormatInfo.copyFunction != nullptr);
    vertexFormatInfo.copyFunction(input, inputStride, count, output);

    return angle::Result::Continue;
}

unsigned int VertexBuffer11::getBufferSize() const
{
    return mBufferSize;
}

angle::Result VertexBuffer11::setBufferSize(const gl::Context *context, unsigned int size)
{
    if (size > mBufferSize)
    {
        return initialize(context, size, mDynamicUsage);
    }

    return angle::Result::Continue;
}

angle::Result VertexBuffer11::discard(const gl::Context *context)
{
    ASSERT(mBuffer.valid());

    D3D11_MAPPED_SUBRESOURCE mappedResource;
    ANGLE_TRY(mRenderer->mapResource(context, mBuffer.get(), 0, D3D11_MAP_WRITE_DISCARD, 0,
                                     &mappedResource));

    mRenderer->getDeviceContext()->Unmap(mBuffer.get(), 0);

    return angle::Result::Continue;
}

const d3d11::Buffer &VertexBuffer11::getBuffer() const
{
    return mBuffer;
}

}  // namespace rx

kc3-lang/angle/src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp

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kc3-lang/angle /src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp