qrhid3d11.cpp 79 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt RHI module
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qrhid3d11_p.h"
#include <QWindow>
#include <QBakedShader>
#include <qmath.h>

#include <d3dcompiler.h>
#include <comdef.h>

QT_BEGIN_NAMESPACE

/*
  Direct3D 11 backend. Provides a double-buffered flip model (FLIP_DISCARD)
  swapchain. Textures and "static" buffers are USAGE_DEFAULT, leaving it to
  UpdateSubResource to upload the data in any way it sees fit. "Dynamic"
  buffers are USAGE_DYNAMIC and updating is done by mapping with WRITE_DISCARD.
  (so here QRhiBuffer keeps a copy of the buffer contents and all of it is
  memcpy'd every time, leaving the rest (juggling with the memory area Map
  returns) to the driver).
*/

QRhiD3D11::QRhiD3D11(QRhiInitParams *params)
58
    : ofr(this)
59 60 61 62 63
{
    QRhiD3D11InitParams *d3dparams = static_cast<QRhiD3D11InitParams *>(params);
    debugLayer = d3dparams->enableDebugLayer;
    importedDevice = d3dparams->importExistingDevice;
    if (importedDevice) {
64 65 66 67 68
        dev = reinterpret_cast<ID3D11Device *>(d3dparams->dev);
        ID3D11DeviceContext *ctx = reinterpret_cast<ID3D11DeviceContext *>(d3dparams->context);
        if (SUCCEEDED(ctx->QueryInterface(IID_ID3D11DeviceContext1, reinterpret_cast<void **>(&context)))) {
            // get rid of the ref added by QueryInterface
            ctx->Release();
69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
        } else {
            qWarning("ID3D11DeviceContext1 not supported by context, cannot import");
            importedDevice = false;
        }
    }

    create();
}

QRhiD3D11::~QRhiD3D11()
{
    destroy();
}

static QString comErrorMessage(HRESULT hr)
{
#ifndef Q_OS_WINRT
    const _com_error comError(hr);
#else
    const _com_error comError(hr, nullptr);
#endif
    QString result = QLatin1String("Error 0x") + QString::number(ulong(hr), 16);
    if (const wchar_t *msg = comError.ErrorMessage())
        result += QLatin1String(": ") + QString::fromWCharArray(msg);
    return result;
}

static inline uint aligned(uint v, uint byteAlign)
{
    return (v + byteAlign - 1) & ~(byteAlign - 1);
}

void QRhiD3D11::create()
{
    uint flags = 0;
    if (debugLayer)
        flags |= D3D11_CREATE_DEVICE_DEBUG;

107 108 109 110 111 112
    HRESULT hr = CreateDXGIFactory2(0, IID_IDXGIFactory2, reinterpret_cast<void **>(&dxgiFactory));
    if (FAILED(hr)) {
        qWarning("Failed to create DXGI factory: %s", qPrintable(comErrorMessage(hr)));
        return;
    }

113
    if (!importedDevice) {
114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
        IDXGIAdapter1 *adapterToUse = nullptr;
        IDXGIAdapter1 *adapter;
        int requestedAdapterIndex = -1;
        if (qEnvironmentVariableIsSet("QT_D3D_ADAPTER_INDEX"))
            requestedAdapterIndex = qEnvironmentVariableIntValue("QT_D3D_ADAPTER_INDEX");
        for (int adapterIndex = 0; dxgiFactory->EnumAdapters1(adapterIndex, &adapter) != DXGI_ERROR_NOT_FOUND; ++adapterIndex) {
            DXGI_ADAPTER_DESC1 desc;
            adapter->GetDesc1(&desc);
            const QString name = QString::fromUtf16((char16_t *) desc.Description);
            qDebug("Adapter %d: '%s' (flags 0x%x)", adapterIndex, qPrintable(name), desc.Flags);
            if (!adapterToUse && (requestedAdapterIndex < 0 || requestedAdapterIndex == adapterIndex)) {
                adapterToUse = adapter;
                qDebug("  using this adapter");
            } else {
                adapter->Release();
            }
        }
        if (!adapterToUse) {
            qWarning("No adapter");
            return;
        }

136
        ID3D11DeviceContext *ctx = nullptr;
137
        HRESULT hr = D3D11CreateDevice(adapterToUse, D3D_DRIVER_TYPE_UNKNOWN, nullptr, flags,
138 139
                                       nullptr, 0, D3D11_SDK_VERSION,
                                       &dev, &featureLevel, &ctx);
140
        adapterToUse->Release();
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
        if (FAILED(hr)) {
            qWarning("Failed to create D3D11 device and context: %s", qPrintable(comErrorMessage(hr)));
            return;
        }
        if (SUCCEEDED(ctx->QueryInterface(IID_ID3D11DeviceContext1, reinterpret_cast<void **>(&context)))) {
            ctx->Release();
        } else {
            qWarning("ID3D11DeviceContext1 not supported");
            return;
        }
    } else {
        Q_ASSERT(dev && context);
        featureLevel = dev->GetFeatureLevel();
    }
}

void QRhiD3D11::destroy()
{
    if (!importedDevice) {
160
        if (context) {
161
            context->Release();
162 163 164
            context = nullptr;
        }
        if (dev) {
165
            dev->Release();
166 167 168 169 170 171
            dev = nullptr;
        }
    }
    if (dxgiFactory) {
        dxgiFactory->Release();
        dxgiFactory = nullptr;
172 173 174 175 176
    }
}

QVector<int> QRhiD3D11::supportedSampleCounts() const
{
177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196
    return { 1, 2, 4, 8 };
}

DXGI_SAMPLE_DESC QRhiD3D11::effectiveSampleCount(int sampleCount) const
{
    DXGI_SAMPLE_DESC desc;
    desc.Count = 1;
    desc.Quality = 0;

    // Stay compatible with QSurfaceFormat and friends where samples == 0 means the same as 1.
    int s = qBound(1, sampleCount, 64);

    if (!supportedSampleCounts().contains(s)) {
        qWarning("Attempted to set unsupported sample count %d", sampleCount);
        return desc;
    }

    desc.Count = s;
    desc.Quality = s > 1 ? D3D11_STANDARD_MULTISAMPLE_PATTERN : 0;
    return desc;
197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233
}

QRhiSwapChain *QRhiD3D11::createSwapChain()
{
    return new QD3D11SwapChain(this);
}

QRhiBuffer *QRhiD3D11::createBuffer(QRhiBuffer::Type type, QRhiBuffer::UsageFlags usage, int size)
{
    return new QD3D11Buffer(this, type, usage, size);
}

int QRhiD3D11::ubufAlignment() const
{
    return 256;
}

bool QRhiD3D11::isYUpInFramebuffer() const
{
    return false;
}

QMatrix4x4 QRhiD3D11::clipSpaceCorrMatrix() const
{
    // Like with Vulkan, but Y is already good.

    static QMatrix4x4 m;
    if (m.isIdentity()) {
        // NB the ctor takes row-major
        m = QMatrix4x4(1.0f, 0.0f, 0.0f, 0.0f,
                       0.0f, 1.0f, 0.0f, 0.0f,
                       0.0f, 0.0f, 0.5f, 0.5f,
                       0.0f, 0.0f, 0.0f, 1.0f);
    }
    return m;
}

234
bool QRhiD3D11::isTextureFormatSupported(QRhiTexture::Format format, QRhiTexture::Flags flags) const
235
{
236 237
    Q_UNUSED(flags);

238 239 240 241 242 243
    if (format >= QRhiTexture::ETC2_RGB8 && format <= QRhiTexture::ASTC_12x12)
        return false;

    return true;
}

244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281
QRhiRenderBuffer *QRhiD3D11::createRenderBuffer(QRhiRenderBuffer::Type type, const QSize &pixelSize,
                                                int sampleCount, QRhiRenderBuffer::Hints hints)
{
    return new QD3D11RenderBuffer(this, type, pixelSize, sampleCount, hints);
}

QRhiTexture *QRhiD3D11::createTexture(QRhiTexture::Format format, const QSize &pixelSize, QRhiTexture::Flags flags)
{
    return new QD3D11Texture(this, format, pixelSize, flags);
}

QRhiSampler *QRhiD3D11::createSampler(QRhiSampler::Filter magFilter, QRhiSampler::Filter minFilter,
                                      QRhiSampler::Filter mipmapMode,
                                      QRhiSampler::AddressMode u, QRhiSampler::AddressMode v, QRhiSampler::AddressMode w)
{
    return new QD3D11Sampler(this, magFilter, minFilter, mipmapMode, u, v, w);
}

QRhiTextureRenderTarget *QRhiD3D11::createTextureRenderTarget(const QRhiTextureRenderTargetDescription &desc,
                                                              QRhiTextureRenderTarget::Flags flags)
{
    return new QD3D11TextureRenderTarget(this, desc, flags);
}

QRhiGraphicsPipeline *QRhiD3D11::createGraphicsPipeline()
{
    return new QD3D11GraphicsPipeline(this);
}

QRhiShaderResourceBindings *QRhiD3D11::createShaderResourceBindings()
{
    return new QD3D11ShaderResourceBindings(this);
}

void QRhiD3D11::setGraphicsPipeline(QRhiCommandBuffer *cb, QRhiGraphicsPipeline *ps, QRhiShaderResourceBindings *srb)
{
    Q_ASSERT(inPass);

Laszlo Agocs's avatar
Laszlo Agocs committed
282
    QD3D11GraphicsPipeline *psD = QRHI_RES(QD3D11GraphicsPipeline, ps);
283
    if (!srb)
Laszlo Agocs's avatar
Laszlo Agocs committed
284
        srb = psD->m_shaderResourceBindings;
285 286 287 288 289 290

    QD3D11ShaderResourceBindings *srbD = QRHI_RES(QD3D11ShaderResourceBindings, srb);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);

    bool resChanged = false;
    for (int i = 0, ie = srbD->sortedBindings.count(); i != ie; ++i) {
Laszlo Agocs's avatar
Laszlo Agocs committed
291
        const QRhiShaderResourceBinding &b(srbD->sortedBindings[i]);
292 293
        QD3D11ShaderResourceBindings::BoundResourceData &bd(srbD->boundResourceData[i]);
        switch (b.type) {
Laszlo Agocs's avatar
Laszlo Agocs committed
294
        case QRhiShaderResourceBinding::UniformBuffer:
295 296 297 298 299
            if (QRHI_RES(QD3D11Buffer, b.ubuf.buf)->generation != bd.ubuf.generation) {
                resChanged = true;
                bd.ubuf.generation = QRHI_RES(QD3D11Buffer, b.ubuf.buf)->generation;
            }
            break;
Laszlo Agocs's avatar
Laszlo Agocs committed
300
        case QRhiShaderResourceBinding::SampledTexture:
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348
            if (QRHI_RES(QD3D11Texture, b.stex.tex)->generation != bd.stex.texGeneration
                    || QRHI_RES(QD3D11Sampler, b.stex.sampler)->generation != bd.stex.samplerGeneration)
            {
                resChanged = true;
                bd.stex.texGeneration = QRHI_RES(QD3D11Texture, b.stex.tex)->generation;
                bd.stex.samplerGeneration = QRHI_RES(QD3D11Sampler, b.stex.sampler)->generation;
            }
            break;
        default:
            Q_UNREACHABLE();
            break;
        }
    }
    if (resChanged)
        updateShaderResourceBindings(srbD);

    const bool pipelineChanged = cbD->currentPipeline != ps || cbD->currentPipelineGeneration != psD->generation;
    const bool srbChanged = cbD->currentSrb != srb || cbD->currentSrbGeneration != srbD->generation;

    if (pipelineChanged || srbChanged || resChanged) {
        cbD->currentPipeline = ps;
        cbD->currentPipelineGeneration = psD->generation;
        cbD->currentSrb = srb;
        cbD->currentSrbGeneration = srbD->generation;

        QD3D11CommandBuffer::Command cmd;
        cmd.cmd = QD3D11CommandBuffer::Command::BindGraphicsPipeline;
        cmd.args.bindGraphicsPipeline.ps = psD;
        cmd.args.bindGraphicsPipeline.srb = srbD;
        cmd.args.bindGraphicsPipeline.resOnlyChange = !pipelineChanged && !srbChanged && resChanged;
        cbD->commands.append(cmd);
    }
}

void QRhiD3D11::setVertexInput(QRhiCommandBuffer *cb, int startBinding, const QVector<QRhi::VertexInput> &bindings,
                               QRhiBuffer *indexBuf, quint32 indexOffset, QRhi::IndexFormat indexFormat)
{
    Q_ASSERT(inPass);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);

    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::BindVertexBuffers;
    cmd.args.bindVertexBuffers.startSlot = startBinding;
    cmd.args.bindVertexBuffers.slotCount = bindings.count();
    for (int i = 0, ie = bindings.count(); i != ie; ++i) {
        QRhiBuffer *buf = bindings[i].first;
        quint32 ofs = bindings[i].second;
        QD3D11Buffer *bufD = QRHI_RES(QD3D11Buffer, buf);
Laszlo Agocs's avatar
Laszlo Agocs committed
349
        Q_ASSERT(bufD->m_usage.testFlag(QRhiBuffer::VertexBuffer));
350 351
        cmd.args.bindVertexBuffers.buffers[i] = bufD->buffer;
        cmd.args.bindVertexBuffers.offsets[i] = ofs;
Laszlo Agocs's avatar
Laszlo Agocs committed
352 353 354
        cmd.args.bindVertexBuffers.strides[i] =
                QRHI_RES(QD3D11GraphicsPipeline, cbD->currentPipeline)->m_vertexInputLayout.bindings[i].stride;
        if (bufD->m_type == QRhiBuffer::Dynamic)
355 356 357 358 359 360
            executeBufferHostWritesForCurrentFrame(bufD);
    }
    cbD->commands.append(cmd);

    if (indexBuf) {
        QD3D11Buffer *ibufD = QRHI_RES(QD3D11Buffer, indexBuf);
Laszlo Agocs's avatar
Laszlo Agocs committed
361
        Q_ASSERT(ibufD->m_usage.testFlag(QRhiBuffer::IndexBuffer));
362 363 364 365 366 367
        QD3D11CommandBuffer::Command cmd;
        cmd.cmd = QD3D11CommandBuffer::Command::BindIndexBuffer;
        cmd.args.bindIndexBuffer.buffer = ibufD->buffer;
        cmd.args.bindIndexBuffer.offset = indexOffset;
        cmd.args.bindIndexBuffer.format = indexFormat == QRhi::IndexUInt16 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT;
        cbD->commands.append(cmd);
Laszlo Agocs's avatar
Laszlo Agocs committed
368
        if (ibufD->m_type == QRhiBuffer::Dynamic)
369 370 371 372 373 374 375 376 377 378 379 380
            executeBufferHostWritesForCurrentFrame(ibufD);
    }
}

void QRhiD3D11::setViewport(QRhiCommandBuffer *cb, const QRhiViewport &viewport)
{
    Q_ASSERT(inPass);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    Q_ASSERT(cbD->currentTarget);
    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::Viewport;
    cmd.args.viewport.x = viewport.r.x();
Laszlo Agocs's avatar
Laszlo Agocs committed
381
    // d3d expects top-left, QRhiViewport is bottom-left
382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464
    cmd.args.viewport.y = cbD->currentTarget->sizeInPixels().height() - (viewport.r.y() + viewport.r.w() - 1);
    cmd.args.viewport.y = viewport.r.y();
    cmd.args.viewport.w = viewport.r.z();
    cmd.args.viewport.h = viewport.r.w();
    cmd.args.viewport.d0 = viewport.minDepth;
    cmd.args.viewport.d1 = viewport.maxDepth;
    cbD->commands.append(cmd);
}

void QRhiD3D11::setScissor(QRhiCommandBuffer *cb, const QRhiScissor &scissor)
{
    Q_ASSERT(inPass);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    Q_ASSERT(cbD->currentTarget);
    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::Scissor;
    cmd.args.scissor.x = scissor.r.x();
    // d3d expects top-left, QRhiScissor is bottom-left
    cmd.args.scissor.y = cbD->currentTarget->sizeInPixels().height() - (scissor.r.y() + scissor.r.w() - 1);
    cmd.args.scissor.w = scissor.r.z();
    cmd.args.scissor.h = scissor.r.w();
    cbD->commands.append(cmd);
}

void QRhiD3D11::setBlendConstants(QRhiCommandBuffer *cb, const QVector4D &c)
{
    Q_ASSERT(inPass);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::BlendConstants;
    cmd.args.blendConstants.ps = QRHI_RES(QD3D11GraphicsPipeline, cbD->currentPipeline);
    memcpy(cmd.args.blendConstants.c, &c, 4 * sizeof(float));
    cbD->commands.append(cmd);
}

void QRhiD3D11::setStencilRef(QRhiCommandBuffer *cb, quint32 refValue)
{
    Q_ASSERT(inPass);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::StencilRef;
    cmd.args.stencilRef.ps = QRHI_RES(QD3D11GraphicsPipeline, cbD->currentPipeline);
    cmd.args.stencilRef.ref = refValue;
    cbD->commands.append(cmd);
}

void QRhiD3D11::draw(QRhiCommandBuffer *cb, quint32 vertexCount,
                     quint32 instanceCount, quint32 firstVertex, quint32 firstInstance)
{
    Q_ASSERT(inPass);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::Draw;
    cmd.args.draw.ps = QRHI_RES(QD3D11GraphicsPipeline, cbD->currentPipeline);
    cmd.args.draw.vertexCount = vertexCount;
    cmd.args.draw.instanceCount = instanceCount;
    cmd.args.draw.firstVertex = firstVertex;
    cmd.args.draw.firstInstance = firstInstance;
    cbD->commands.append(cmd);
}

void QRhiD3D11::drawIndexed(QRhiCommandBuffer *cb, quint32 indexCount,
                            quint32 instanceCount, quint32 firstIndex, qint32 vertexOffset, quint32 firstInstance)
{
    Q_ASSERT(inPass);
    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::DrawIndexed;
    cmd.args.drawIndexed.ps = QRHI_RES(QD3D11GraphicsPipeline, cbD->currentPipeline);
    cmd.args.drawIndexed.indexCount = indexCount;
    cmd.args.drawIndexed.instanceCount = instanceCount;
    cmd.args.drawIndexed.firstIndex = firstIndex;
    cmd.args.drawIndexed.vertexOffset = vertexOffset;
    cmd.args.drawIndexed.firstInstance = firstInstance;
    cbD->commands.append(cmd);
}

QRhi::FrameOpResult QRhiD3D11::beginFrame(QRhiSwapChain *swapChain)
{
    Q_ASSERT(!inFrame);
    inFrame = true;

    QD3D11SwapChain *swapChainD = QRHI_RES(QD3D11SwapChain, swapChain);
Laszlo Agocs's avatar
Laszlo Agocs committed
465
    contextState.currentSwapChain = swapChainD;
466 467 468
    swapChainD->cb.resetState();

    swapChainD->rt.d.pixelSize = swapChainD->pixelSize;
469
    swapChainD->rt.d.rtv[0] = swapChainD->sampleDesc.Count > 1 ?
470
                swapChainD->msaaRtv[swapChainD->currentFrame] : swapChainD->rtv[swapChainD->currentFrame];
471
    swapChainD->rt.d.dsv = swapChainD->ds ? swapChainD->ds->dsv : nullptr;
472 473 474 475 476 477 478 479 480 481 482 483

    return QRhi::FrameOpSuccess;
}

QRhi::FrameOpResult QRhiD3D11::endFrame(QRhiSwapChain *swapChain)
{
    Q_ASSERT(inFrame);
    inFrame = false;

    QD3D11SwapChain *swapChainD = QRHI_RES(QD3D11SwapChain, swapChain);
    executeCommandBuffer(&swapChainD->cb);

484
    if (swapChainD->sampleDesc.Count > 1) {
485 486
        context->ResolveSubresource(swapChainD->tex[swapChainD->currentFrame], 0,
                                    swapChainD->msaaTex[swapChainD->currentFrame], 0,
487 488 489
                                    swapChainD->colorFormat);
    }

490 491 492 493 494 495
    const UINT swapInterval = 1;
    const UINT presentFlags = 0;
    HRESULT hr = swapChainD->swapChain->Present(swapInterval, presentFlags);
    if (FAILED(hr))
        qWarning("Failed to present: %s", qPrintable(comErrorMessage(hr)));

496
    swapChainD->currentFrame = (swapChainD->currentFrame + 1) % QD3D11SwapChain::BUFFER_COUNT;
497

Laszlo Agocs's avatar
Laszlo Agocs committed
498
    contextState.currentSwapChain = nullptr;
499 500 501 502
    ++finishedFrameCount;
    return QRhi::FrameOpSuccess;
}

503 504
QRhi::FrameOpResult QRhiD3D11::beginOffscreenFrame(QRhiCommandBuffer **cb)
{
505 506 507 508 509 510 511 512
    Q_ASSERT(!inFrame);
    inFrame = true;
    ofr.active = true;

    ofr.cbWrapper.resetState();
    *cb = &ofr.cbWrapper;

    return QRhi::FrameOpSuccess;
513 514
}

515
QRhi::FrameOpResult QRhiD3D11::endOffscreenFrame()
516
{
517 518 519 520 521 522 523 524
    Q_ASSERT(inFrame && ofr.active);
    inFrame = false;
    ofr.active = false;

    executeCommandBuffer(&ofr.cbWrapper);

    ++finishedFrameCount;
    return QRhi::FrameOpSuccess;;
525 526
}

Laszlo Agocs's avatar
Laszlo Agocs committed
527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630
static inline DXGI_FORMAT toD3DTextureFormat(QRhiTexture::Format format, QRhiTexture::Flags flags)
{
    const bool srgb = flags.testFlag(QRhiTexture::sRGB);
    switch (format) {
    case QRhiTexture::RGBA8:
        return srgb ? DXGI_FORMAT_R8G8B8A8_UNORM_SRGB : DXGI_FORMAT_R8G8B8A8_UNORM;
    case QRhiTexture::BGRA8:
        return srgb ? DXGI_FORMAT_B8G8R8A8_UNORM_SRGB : DXGI_FORMAT_B8G8R8A8_UNORM;
    case QRhiTexture::R8:
        return DXGI_FORMAT_R8_UNORM;
    case QRhiTexture::R16:
        return DXGI_FORMAT_R16_UNORM;

    case QRhiTexture::D16:
        return DXGI_FORMAT_R16_TYPELESS;
    case QRhiTexture::D32:
        return DXGI_FORMAT_R32_TYPELESS;

    case QRhiTexture::BC1:
        return srgb ? DXGI_FORMAT_BC1_UNORM_SRGB : DXGI_FORMAT_BC1_UNORM;
    case QRhiTexture::BC2:
        return srgb ? DXGI_FORMAT_BC2_UNORM_SRGB : DXGI_FORMAT_BC2_UNORM;
    case QRhiTexture::BC3:
        return srgb ? DXGI_FORMAT_BC3_UNORM_SRGB : DXGI_FORMAT_BC3_UNORM;
    case QRhiTexture::BC4:
        return DXGI_FORMAT_BC4_UNORM;
    case QRhiTexture::BC5:
        return DXGI_FORMAT_BC5_UNORM;
    case QRhiTexture::BC6H:
        return DXGI_FORMAT_BC6H_UF16;
    case QRhiTexture::BC7:
        return srgb ? DXGI_FORMAT_BC7_UNORM_SRGB : DXGI_FORMAT_BC7_UNORM;

    case QRhiTexture::ETC2_RGB8:
        Q_FALLTHROUGH();
    case QRhiTexture::ETC2_RGB8A1:
        Q_FALLTHROUGH();
    case QRhiTexture::ETC2_RGBA8:
        qWarning("QRhiD3D11 does not support ETC2 textures");
        return DXGI_FORMAT_R8G8B8A8_UNORM;

    case QRhiTexture::ASTC_4x4:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_5x4:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_5x5:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_6x5:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_6x6:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_8x5:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_8x6:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_8x8:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_10x5:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_10x6:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_10x8:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_10x10:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_12x10:
        Q_FALLTHROUGH();
    case QRhiTexture::ASTC_12x12:
        qWarning("QRhiD3D11 does not support ASTC textures");
        return DXGI_FORMAT_R8G8B8A8_UNORM;

    default:
        Q_UNREACHABLE();
        return DXGI_FORMAT_R8G8B8A8_UNORM;
    }
}

static inline QRhiTexture::Format colorTextureFormatFromDxgiFormat(DXGI_FORMAT format, QRhiTexture::Flags *flags)
{
    switch (format) {
    case DXGI_FORMAT_R8G8B8A8_UNORM:
        return QRhiTexture::RGBA8;
    case DXGI_FORMAT_R8G8B8A8_UNORM_SRGB:
        if (flags)
            (*flags) |= QRhiTexture::sRGB;
        return QRhiTexture::RGBA8;
    case DXGI_FORMAT_B8G8R8A8_UNORM:
        return QRhiTexture::BGRA8;
    case DXGI_FORMAT_B8G8R8A8_UNORM_SRGB:
        if (flags)
            (*flags) |= QRhiTexture::sRGB;
        return QRhiTexture::BGRA8;
    case DXGI_FORMAT_R8_UNORM:
        return QRhiTexture::R8;
    case DXGI_FORMAT_R16_UNORM:
        return QRhiTexture::R16;
    default: // this cannot assert, must warn and return unknown
        qWarning("DXGI_FORMAT %d is not a recognized uncompressed color format", format);
        break;
    }
    return QRhiTexture::UnknownFormat;
}

static inline bool isDepthTextureFormat(QRhiTexture::Format format)
631
{
Laszlo Agocs's avatar
Laszlo Agocs committed
632 633 634 635 636
    switch (format) {
    case QRhiTexture::Format::D16:
        Q_FALLTHROUGH();
    case QRhiTexture::Format::D32:
        return true;
637

Laszlo Agocs's avatar
Laszlo Agocs committed
638 639 640 641 642 643 644
    default:
        return false;
    }
}

bool QRhiD3D11::readback(QRhiCommandBuffer *cb, const QRhiReadbackDescription &rb, QRhiReadbackResult *result)
{
645
    Q_ASSERT(inFrame && !inPass);
646

Laszlo Agocs's avatar
Laszlo Agocs committed
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690
    ID3D11Resource *src;
    DXGI_FORMAT dxgiFormat;
    QSize pixelSize;
    QRhiTexture::Format format;
    UINT subres = 0;
    QD3D11Texture *texD = QRHI_RES(QD3D11Texture, rb.texture);
    QD3D11SwapChain *swapChainD = nullptr;
    if (texD) {
        src = texD->tex;
        dxgiFormat = toD3DTextureFormat(texD->m_format, texD->m_flags);
        pixelSize = texD->m_pixelSize;
        if (rb.level > 0) {
            pixelSize.setWidth(qFloor(float(qMax(1, pixelSize.width() >> rb.level))));
            pixelSize.setHeight(qFloor(float(qMax(1, pixelSize.height() >> rb.level))));
        }
        format = texD->m_format;
        subres = D3D11CalcSubresource(rb.level, rb.layer, texD->mipLevelCount);
    } else {
        Q_ASSERT(contextState.currentSwapChain);
        swapChainD = QRHI_RES(QD3D11SwapChain, contextState.currentSwapChain);
        src = swapChainD->tex[swapChainD->currentFrame];
        dxgiFormat = swapChainD->colorFormat;
        pixelSize = swapChainD->pixelSize;
        format = colorTextureFormatFromDxgiFormat(dxgiFormat, nullptr);
        if (format == QRhiTexture::UnknownFormat)
            return false;
    }
    quint32 bufSize = 0;
    textureFormatInfo(format, pixelSize, nullptr, &bufSize);

    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    QD3D11CommandBuffer::Command cmd;
    cmd.cmd = QD3D11CommandBuffer::Command::ReadPixels;
    cmd.args.readPixels.src = src;
    cmd.args.readPixels.dxgiFormat = dxgiFormat;
    cmd.args.readPixels.format = format;
    cmd.args.readPixels.w = pixelSize.width();
    cmd.args.readPixels.h = pixelSize.height();
    cmd.args.readPixels.byteSize = bufSize;
    cmd.args.readPixels.subres = subres;
    cmd.args.readPixels.result = result;
    cbD->commands.append(cmd);

    return true;
691 692 693 694 695
}

QRhi::FrameOpResult QRhiD3D11::finish()
{
    Q_ASSERT(!inPass);
Laszlo Agocs's avatar
Laszlo Agocs committed
696 697 698 699 700 701 702 703 704 705 706
    if (inFrame) {
        if (ofr.active) {
            Q_ASSERT(!contextState.currentSwapChain);
            executeCommandBuffer(&ofr.cbWrapper);
            ofr.cbWrapper.resetCommands();
        } else {
            Q_ASSERT(contextState.currentSwapChain);
            executeCommandBuffer(&contextState.currentSwapChain->cb);
            contextState.currentSwapChain->cb.resetCommands();
        }
    }
707 708 709
    return QRhi::FrameOpSuccess;
}

710 711 712 713 714 715
void QRhiD3D11::commitResourceUpdates(QRhiResourceUpdateBatch *resourceUpdates)
{
    QRhiResourceUpdateBatchPrivate *ud = QRhiResourceUpdateBatchPrivate::get(resourceUpdates);

    for (const QRhiResourceUpdateBatchPrivate::DynamicBufferUpdate &u : ud->dynamicBufferUpdates) {
        QD3D11Buffer *bufD = QRHI_RES(QD3D11Buffer, u.buf);
Laszlo Agocs's avatar
Laszlo Agocs committed
716
        Q_ASSERT(bufD->m_type == QRhiBuffer::Dynamic);
717 718 719 720 721 722
        memcpy(bufD->dynBuf.data() + u.offset, u.data.constData(), u.data.size());
        bufD->hasPendingDynamicUpdates = true;
    }

    for (const QRhiResourceUpdateBatchPrivate::StaticBufferUpload &u : ud->staticBufferUploads) {
        QD3D11Buffer *bufD = QRHI_RES(QD3D11Buffer, u.buf);
Laszlo Agocs's avatar
Laszlo Agocs committed
723 724
        Q_ASSERT(bufD->m_type != QRhiBuffer::Dynamic);
        Q_ASSERT(u.data.size() == bufD->m_size);
725 726 727 728 729 730 731 732
        if (!(u.data.size() & 0xFF)) {
            context->UpdateSubresource(bufD->buffer, 0, nullptr, u.data.constData(), 0, 0);
        } else {
            // Specify the region since the ID3D11Buffer's size is rounded up to be
            // a multiple of 256 while the data we have has the original size.
            D3D11_BOX box;
            box.left = box.top = box.front = 0;
            box.back = box.bottom = 1;
733
            box.right = u.data.size(); // no -1: right, bottom, back are exclusive, see D3D11_BOX doc
734 735 736 737 738 739 740
            context->UpdateSubresource(bufD->buffer, 0, &box, u.data.constData(), 0, 0);
        }
    }

    for (const QRhiResourceUpdateBatchPrivate::TextureUpload &u : ud->textureUploads) {
        QD3D11Texture *texD = QRHI_RES(QD3D11Texture, u.tex);
        for (int layer = 0, layerCount = u.desc.layers.count(); layer != layerCount; ++layer) {
Laszlo Agocs's avatar
Laszlo Agocs committed
741
            const QRhiTextureUploadDescription::Layer &layerDesc(u.desc.layers[layer]);
742
            for (int level = 0, levelCount = layerDesc.mipImages.count(); level != levelCount; ++level) {
Laszlo Agocs's avatar
Laszlo Agocs committed
743
                const QRhiTextureUploadDescription::Layer::MipLevel mipDesc(layerDesc.mipImages[level]);
744
                UINT subres = D3D11CalcSubresource(level, layer, texD->mipLevelCount);
745 746 747 748
                if (!mipDesc.image.isNull()) {
                    context->UpdateSubresource(texD->tex, subres, nullptr,
                                               mipDesc.image.constBits(), mipDesc.image.bytesPerLine(), 0);
                } else if (!mipDesc.compressedData.isEmpty() && isCompressedFormat(texD->m_format)) {
749 750
                    const int w = qFloor(float(qMax(1, texD->m_pixelSize.width() >> level)));
                    const int h = qFloor(float(qMax(1, texD->m_pixelSize.height() >> level)));
751
                    quint32 bpl = 0;
752
                    compressedFormatInfo(texD->m_format, QSize(w, h), &bpl, nullptr);
753 754 755
                    context->UpdateSubresource(texD->tex, subres, nullptr,
                                               mipDesc.compressedData.constData(), bpl, 0);
                }
756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791
            }
        }
    }

    ud->free();
}

static inline QD3D11BasicRenderTargetData *basicRtData(QRhiRenderTarget *rt)
{
    switch (rt->type()) {
    case QRhiRenderTarget::RtRef:
        return &QRHI_RES(QD3D11ReferenceRenderTarget, rt)->d;
    case QRhiRenderTarget::RtTexture:
        return &QRHI_RES(QD3D11TextureRenderTarget, rt)->d;
    default:
        Q_UNREACHABLE();
        return nullptr;
    }
}

void QRhiD3D11::beginPass(QRhiRenderTarget *rt,
                          QRhiCommandBuffer *cb,
                          const QRhiColorClearValue &colorClearValue,
                          const QRhiDepthStencilClearValue &depthStencilClearValue,
                          QRhiResourceUpdateBatch *resourceUpdates)
{
    Q_ASSERT(!inPass);

    if (resourceUpdates)
        commitResourceUpdates(resourceUpdates);

    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    bool needsColorClear = true;
    QD3D11BasicRenderTargetData *rtD = basicRtData(rt);
    if (rt->type() == QRhiRenderTarget::RtTexture) {
        QD3D11TextureRenderTarget *rtTex = QRHI_RES(QD3D11TextureRenderTarget, rt);
Laszlo Agocs's avatar
Laszlo Agocs committed
792
        needsColorClear = !rtTex->m_flags.testFlag(QRhiTextureRenderTarget::PreserveColorContents);
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847
    }

    cbD->currentTarget = rt;

    QD3D11CommandBuffer::Command fbCmd;
    fbCmd.cmd = QD3D11CommandBuffer::Command::SetRenderTarget;
    fbCmd.args.setRenderTarget.rt = rt;
    cbD->commands.append(fbCmd);

    QD3D11CommandBuffer::Command clearCmd;
    clearCmd.cmd = QD3D11CommandBuffer::Command::Clear;
    clearCmd.args.clear.rt = rt;
    clearCmd.args.clear.mask = 0;
    if (!rtD->colorAttCount)
        needsColorClear = false;
    if (rtD->dsAttCount)
        clearCmd.args.clear.mask |= QD3D11CommandBuffer::Command::Depth | QD3D11CommandBuffer::Command::Stencil;
    if (needsColorClear)
        clearCmd.args.clear.mask |= QD3D11CommandBuffer::Command::Color;

    memcpy(clearCmd.args.clear.c, &colorClearValue.rgba, sizeof(float) * 4);
    clearCmd.args.clear.d = depthStencilClearValue.d;
    clearCmd.args.clear.s = depthStencilClearValue.s;

    cbD->commands.append(clearCmd);

    inPass = true;
}

void QRhiD3D11::endPass(QRhiCommandBuffer *cb)
{
    Q_ASSERT(inPass);
    inPass = false;

    QD3D11CommandBuffer *cbD = QRHI_RES(QD3D11CommandBuffer, cb);
    cbD->currentTarget = nullptr;
}

void QRhiD3D11::updateShaderResourceBindings(QD3D11ShaderResourceBindings *srbD)
{
    srbD->vsubufs.clear();
    srbD->vsubufoffsets.clear();
    srbD->vsubufsizes.clear();

    srbD->fsubufs.clear();
    srbD->fsubufoffsets.clear();
    srbD->fsubufsizes.clear();

    srbD->vssamplers.clear();
    srbD->vsshaderresources.clear();

    srbD->fssamplers.clear();
    srbD->fsshaderresources.clear();

    for (int i = 0, ie = srbD->sortedBindings.count(); i != ie; ++i) {
Laszlo Agocs's avatar
Laszlo Agocs committed
848
        const QRhiShaderResourceBinding &b(srbD->sortedBindings[i]);
849 850
        QD3D11ShaderResourceBindings::BoundResourceData &bd(srbD->boundResourceData[i]);
        switch (b.type) {
Laszlo Agocs's avatar
Laszlo Agocs committed
851
        case QRhiShaderResourceBinding::UniformBuffer:
852 853 854 855 856 857 858 859
        {
            QD3D11Buffer *bufD = QRHI_RES(QD3D11Buffer, b.ubuf.buf);
            Q_ASSERT(aligned(b.ubuf.offset, 256) == b.ubuf.offset);
            bd.ubuf.generation = bufD->generation;
            const uint offsetInConstants = b.ubuf.offset / 16;
            // size must be 16 mult. (in constants, i.e. multiple of 256 bytes).
            // We can round up if needed since the buffers's actual size
            // (ByteWidth) is always a multiple of 256.
Laszlo Agocs's avatar
Laszlo Agocs committed
860 861
            const uint sizeInConstants = aligned(b.ubuf.maybeSize ? b.ubuf.maybeSize : bufD->m_size, 256) / 16;
            if (b.stage.testFlag(QRhiShaderResourceBinding::VertexStage)) {
862 863 864 865
                srbD->vsubufs.feed(b.binding, bufD->buffer);
                srbD->vsubufoffsets.feed(b.binding, offsetInConstants);
                srbD->vsubufsizes.feed(b.binding, sizeInConstants);
            }
Laszlo Agocs's avatar
Laszlo Agocs committed
866
            if (b.stage.testFlag(QRhiShaderResourceBinding::FragmentStage)) {
867 868 869 870 871 872
                srbD->fsubufs.feed(b.binding, bufD->buffer);
                srbD->fsubufoffsets.feed(b.binding, offsetInConstants);
                srbD->fsubufsizes.feed(b.binding, sizeInConstants);
            }
        }
            break;
Laszlo Agocs's avatar
Laszlo Agocs committed
873
        case QRhiShaderResourceBinding::SampledTexture:
874 875 876 877
            // A sampler with binding N is mapped to a HLSL sampler and texture
            // with registers sN and tN by SPIRV-Cross.
            bd.stex.texGeneration = QRHI_RES(QD3D11Texture, b.stex.tex)->generation;
            bd.stex.samplerGeneration = QRHI_RES(QD3D11Sampler, b.stex.sampler)->generation;
Laszlo Agocs's avatar
Laszlo Agocs committed
878
            if (b.stage.testFlag(QRhiShaderResourceBinding::VertexStage)) {
879 880 881
                srbD->vssamplers.feed(b.binding, QRHI_RES(QD3D11Sampler, b.stex.sampler)->samplerState);
                srbD->vsshaderresources.feed(b.binding, QRHI_RES(QD3D11Texture, b.stex.tex)->srv);
            }
Laszlo Agocs's avatar
Laszlo Agocs committed
882
            if (b.stage.testFlag(QRhiShaderResourceBinding::FragmentStage)) {
883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926
                srbD->fssamplers.feed(b.binding, QRHI_RES(QD3D11Sampler, b.stex.sampler)->samplerState);
                srbD->fsshaderresources.feed(b.binding, QRHI_RES(QD3D11Texture, b.stex.tex)->srv);
            }
            break;
        default:
            Q_UNREACHABLE();
            break;
        }
    }

    srbD->vsubufs.finish();
    srbD->vsubufoffsets.finish();
    srbD->vsubufsizes.finish();

    srbD->fsubufs.finish();
    srbD->fsubufoffsets.finish();
    srbD->fsubufsizes.finish();

    srbD->vssamplers.finish();
    srbD->vsshaderresources.finish();

    srbD->fssamplers.finish();
    srbD->fsshaderresources.finish();
}

void QRhiD3D11::executeBufferHostWritesForCurrentFrame(QD3D11Buffer *bufD)
{
    if (!bufD->hasPendingDynamicUpdates)
        return;

    bufD->hasPendingDynamicUpdates = false;
    D3D11_MAPPED_SUBRESOURCE mp;
    HRESULT hr = context->Map(bufD->buffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mp);
    if (SUCCEEDED(hr)) {
        memcpy(mp.pData, bufD->dynBuf.constData(), bufD->dynBuf.size());
        context->Unmap(bufD->buffer, 0);
    } else {
        qWarning("Failed to map buffer: %s", qPrintable(comErrorMessage(hr)));
    }
}

void QRhiD3D11::setShaderResources(QD3D11ShaderResourceBindings *srbD)
{
    for (int i = 0, ie = srbD->sortedBindings.count(); i != ie; ++i) {
Laszlo Agocs's avatar
Laszlo Agocs committed
927
        const QRhiShaderResourceBinding &b(srbD->sortedBindings[i]);
928
        switch (b.type) {
Laszlo Agocs's avatar
Laszlo Agocs committed
929
        case QRhiShaderResourceBinding::UniformBuffer:
930 931
        {
            QD3D11Buffer *bufD = QRHI_RES(QD3D11Buffer, b.ubuf.buf);
Laszlo Agocs's avatar
Laszlo Agocs committed
932
            if (bufD->m_type == QRhiBuffer::Dynamic)
933 934 935
                executeBufferHostWritesForCurrentFrame(bufD);
        }
            break;
Laszlo Agocs's avatar
Laszlo Agocs committed
936
        case QRhiShaderResourceBinding::SampledTexture:
937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996
            break;
        default:
            Q_UNREACHABLE();
            break;
        }
    }

    for (const auto &batch : srbD->vssamplers.batches)
        context->VSSetSamplers(batch.startBinding, batch.resources.count(), batch.resources.constData());

    for (const auto &batch : srbD->vsshaderresources.batches) {
        context->VSSetShaderResources(batch.startBinding, batch.resources.count(), batch.resources.constData());
        contextState.vsLastActiveSrvBinding = batch.startBinding + batch.resources.count() - 1;
    }

    for (const auto &batch : srbD->fssamplers.batches)
        context->PSSetSamplers(batch.startBinding, batch.resources.count(), batch.resources.constData());

    for (const auto &batch : srbD->fsshaderresources.batches) {
        context->PSSetShaderResources(batch.startBinding, batch.resources.count(), batch.resources.constData());
        contextState.fsLastActiveSrvBinding = batch.startBinding + batch.resources.count() - 1;
    }

    for (int i = 0, ie = srbD->vsubufs.batches.count(); i != ie; ++i) {
        context->VSSetConstantBuffers1(srbD->vsubufs.batches[i].startBinding,
                                       srbD->vsubufs.batches[i].resources.count(),
                                       srbD->vsubufs.batches[i].resources.constData(),
                                       srbD->vsubufoffsets.batches[i].resources.constData(),
                                       srbD->vsubufsizes.batches[i].resources.constData());
    }

    for (int i = 0, ie = srbD->fsubufs.batches.count(); i != ie; ++i) {
        context->PSSetConstantBuffers1(srbD->fsubufs.batches[i].startBinding,
                                       srbD->fsubufs.batches[i].resources.count(),
                                       srbD->fsubufs.batches[i].resources.constData(),
                                       srbD->fsubufoffsets.batches[i].resources.constData(),
                                       srbD->fsubufsizes.batches[i].resources.constData());
    }
}

void QRhiD3D11::executeCommandBuffer(QD3D11CommandBuffer *cbD)
{
    quint32 stencilRef = 0;
    float blendConstants[] = { 1, 1, 1, 1 };

    for (const QD3D11CommandBuffer::Command &cmd : qAsConst(cbD->commands)) {
        switch (cmd.cmd) {
        case QD3D11CommandBuffer::Command::SetRenderTarget:
        {
            QRhiRenderTarget *rt = cmd.args.setRenderTarget.rt;
            // The new output cannot be bound as input from the previous frame,
            // otherwise the debug layer complains. Avoid this.
            const int nullsrvCount = qMax(contextState.vsLastActiveSrvBinding, contextState.fsLastActiveSrvBinding) + 1;
            QVarLengthArray<ID3D11ShaderResourceView *,
                    D3D11_COMMONSHADER_INPUT_RESOURCE_SLOT_COUNT> nullsrvs(nullsrvCount);
            for (int i = 0; i < nullsrvs.count(); ++i)
                nullsrvs[i] = nullptr;
            context->VSSetShaderResources(0, nullsrvs.count(), nullsrvs.constData());
            context->PSSetShaderResources(0, nullsrvs.count(), nullsrvs.constData());
            QD3D11BasicRenderTargetData *rtD = basicRtData(rt);
997
            context->OMSetRenderTargets(rtD->colorAttCount, rtD->colorAttCount ? rtD->rtv : nullptr, rtD->dsv);
998 999 1000 1001
        }
            break;
        case QD3D11CommandBuffer::Command::Clear:
        {
1002
            QD3D11BasicRenderTargetData *rtD = basicRtData(cmd.args.clear.rt);
1003 1004
            if (cmd.args.clear.mask & QD3D11CommandBuffer::Command::Color) {
                for (int i = 0; i < rtD->colorAttCount; ++i)
1005
                    context->ClearRenderTargetView(rtD->rtv[i], cmd.args.clear.c);
1006 1007 1008 1009 1010 1011 1012
            }
            uint ds = 0;
            if (cmd.args.clear.mask & QD3D11CommandBuffer::Command::Depth)
                ds |= D3D11_CLEAR_DEPTH;
            if (cmd.args.clear.mask & QD3D11CommandBuffer::Command::Stencil)
                ds |= D3D11_CLEAR_STENCIL;
            if (ds)
1013
                context->ClearDepthStencilView(rtD->dsv, ds, cmd.args.clear.d, cmd.args.clear.s);
1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097
        }
            break;
        case QD3D11CommandBuffer::Command::Viewport:
        {
            D3D11_VIEWPORT v;
            v.TopLeftX = cmd.args.viewport.x;
            v.TopLeftY = cmd.args.viewport.y;
            v.Width = cmd.args.viewport.w;
            v.Height = cmd.args.viewport.h;
            v.MinDepth = cmd.args.viewport.d0;
            v.MaxDepth = cmd.args.viewport.d1;
            context->RSSetViewports(1, &v);
        }
            break;
        case QD3D11CommandBuffer::Command::Scissor:
        {
            D3D11_RECT r;
            r.left = cmd.args.scissor.x;
            r.top = cmd.args.scissor.y;
            r.right = cmd.args.scissor.x + cmd.args.scissor.w - 1;
            r.bottom = cmd.args.scissor.y + cmd.args.scissor.h - 1;
            context->RSSetScissorRects(1, &r);
        }
            break;
        case QD3D11CommandBuffer::Command::BindVertexBuffers:
            context->IASetVertexBuffers(cmd.args.bindVertexBuffers.startSlot,
                                        cmd.args.bindVertexBuffers.slotCount,
                                        cmd.args.bindVertexBuffers.buffers,
                                        cmd.args.bindVertexBuffers.strides,
                                        cmd.args.bindVertexBuffers.offsets);
            break;
        case QD3D11CommandBuffer::Command::BindIndexBuffer:
            context->IASetIndexBuffer(cmd.args.bindIndexBuffer.buffer,
                                      cmd.args.bindIndexBuffer.format,
                                      cmd.args.bindIndexBuffer.offset);
            break;
        case QD3D11CommandBuffer::Command::BindGraphicsPipeline:
        {
            QD3D11GraphicsPipeline *psD = cmd.args.bindGraphicsPipeline.ps;
            QD3D11ShaderResourceBindings *srbD = cmd.args.bindGraphicsPipeline.srb;
            if (!cmd.args.bindGraphicsPipeline.resOnlyChange) {
                context->VSSetShader(psD->vs, nullptr, 0);
                context->PSSetShader(psD->fs, nullptr, 0);
                context->IASetPrimitiveTopology(psD->d3dTopology);
                context->IASetInputLayout(psD->inputLayout);
                context->OMSetDepthStencilState(psD->dsState, stencilRef);
                context->OMSetBlendState(psD->blendState, blendConstants, 0xffffffff);
                context->RSSetState(psD->rastState);
            }
            setShaderResources(srbD);
        }
            break;
        case QD3D11CommandBuffer::Command::StencilRef:
            stencilRef = cmd.args.stencilRef.ref;
            context->OMSetDepthStencilState(cmd.args.stencilRef.ps->dsState, stencilRef);
            break;
        case QD3D11CommandBuffer::Command::BlendConstants:
            memcpy(blendConstants, cmd.args.blendConstants.c, 4 * sizeof(float));
            context->OMSetBlendState(cmd.args.blendConstants.ps->blendState, blendConstants, 0xffffffff);
            break;
        case QD3D11CommandBuffer::Command::Draw:
            if (cmd.args.draw.ps) {
                if (cmd.args.draw.instanceCount == 1)
                    context->Draw(cmd.args.draw.vertexCount, cmd.args.draw.firstVertex);
                else
                    context->DrawInstanced(cmd.args.draw.vertexCount, cmd.args.draw.instanceCount,
                                           cmd.args.draw.firstVertex, cmd.args.draw.firstInstance);
            } else {
                qWarning("No graphics pipeline active for draw; ignored");
            }
            break;
        case QD3D11CommandBuffer::Command::DrawIndexed:
            if (cmd.args.drawIndexed.ps) {
                if (cmd.args.drawIndexed.instanceCount == 1)
                    context->DrawIndexed(cmd.args.drawIndexed.indexCount, cmd.args.drawIndexed.firstIndex,
                                         cmd.args.drawIndexed.vertexOffset);
                else
                    context->DrawIndexedInstanced(cmd.args.drawIndexed.indexCount, cmd.args.drawIndexed.instanceCount,
                                                  cmd.args.drawIndexed.firstIndex, cmd.args.drawIndexed.vertexOffset,
                                                  cmd.args.drawIndexed.firstInstance);
            } else {
                qWarning("No graphics pipeline active for drawIndexed; ignored");
            }
            break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1098 1099 1100
        case QD3D11CommandBuffer::Command::ReadPixels:
            readPixels(cmd);
            break;
1101 1102 1103 1104 1105 1106
        default:
            break;
        }
    }
}

Laszlo Agocs's avatar
Laszlo Agocs committed
1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148
void QRhiD3D11::readPixels(const QD3D11CommandBuffer::Command &cmd)
{
    D3D11_TEXTURE2D_DESC desc;
    memset(&desc, 0, sizeof(desc));
    desc.Width = cmd.args.readPixels.w;
    desc.Height = cmd.args.readPixels.h;
    desc.MipLevels = 1;
    desc.ArraySize = 1;
    desc.Format = cmd.args.readPixels.dxgiFormat;
    desc.SampleDesc.Count = 1;
    desc.Usage = D3D11_USAGE_STAGING;
    desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
    ID3D11Texture2D *stagingTex;
    HRESULT hr = dev->CreateTexture2D(&desc, nullptr, &stagingTex);
    if (FAILED(hr)) {
        qWarning("Failed to create readback staging texture: %s", qPrintable(comErrorMessage(hr)));
        return;
    }

    context->CopySubresourceRegion(stagingTex, 0, 0, 0, 0,
                                   cmd.args.readPixels.src, cmd.args.readPixels.subres, nullptr);

    D3D11_MAPPED_SUBRESOURCE mp;
    hr = context->Map(stagingTex, 0, D3D11_MAP_READ, 0, &mp);
    if (FAILED(hr)) {
        qWarning("Failed to map readback staging texture: %s", qPrintable(comErrorMessage(hr)));
        stagingTex->Release();
        return;
    }
    QRhiReadbackResult *result = cmd.args.readPixels.result;
    result->format = cmd.args.readPixels.format;
    result->pixelSize = QSize(cmd.args.readPixels.w, cmd.args.readPixels.h);
    result->data.resize(cmd.args.readPixels.byteSize);
    memcpy(result->data.data(), mp.pData, result->data.size());
    context->Unmap(stagingTex, 0);

    stagingTex->Release();

    if (result->completed)
        result->completed();
}

1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183
QD3D11Buffer::QD3D11Buffer(QRhiImplementation *rhi, Type type, UsageFlags usage, int size)
    : QRhiBuffer(rhi, type, usage, size)
{
}

void QD3D11Buffer::release()
{
    if (!buffer)
        return;

    dynBuf.clear();

    buffer->Release();
    buffer = nullptr;
}

static inline uint toD3DBufferUsage(QRhiBuffer::UsageFlags usage)
{
    int u = 0;
    if (usage.testFlag(QRhiBuffer::VertexBuffer))
        u |= D3D11_BIND_VERTEX_BUFFER;;
    if (usage.testFlag(QRhiBuffer::IndexBuffer))
        u |= D3D11_BIND_INDEX_BUFFER;
    if (usage.testFlag(QRhiBuffer::UniformBuffer))
        u |= D3D11_BIND_CONSTANT_BUFFER;
    return u;
}

bool QD3D11Buffer::build()
{
    if (buffer)
        release();

    D3D11_BUFFER_DESC desc;
    memset(&desc, 0, sizeof(desc));
Laszlo Agocs's avatar
Laszlo Agocs committed
1184 1185 1186 1187
    desc.ByteWidth = m_usage.testFlag(QRhiBuffer::UniformBuffer) ? aligned(m_size, 256) : m_size;
    desc.Usage = m_type == Dynamic ? D3D11_USAGE_DYNAMIC : D3D11_USAGE_DEFAULT;
    desc.BindFlags = toD3DBufferUsage(m_usage);
    desc.CPUAccessFlags = m_type == Dynamic ? D3D11_CPU_ACCESS_WRITE : 0;
1188 1189 1190 1191 1192 1193 1194 1195

    QRHI_RES_RHI(QRhiD3D11);
    HRESULT hr = rhiD->dev->CreateBuffer(&desc, nullptr, &buffer);
    if (FAILED(hr)) {
        qWarning("Failed to create buffer: %s", qPrintable(comErrorMessage(hr)));
        return false;
    }

Laszlo Agocs's avatar
Laszlo Agocs committed
1196 1197
    if (m_type == Dynamic) {
        dynBuf.resize(m_size);
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231
        hasPendingDynamicUpdates = false;
    }

    generation += 1;
    return true;
}

QD3D11RenderBuffer::QD3D11RenderBuffer(QRhiImplementation *rhi, Type type, const QSize &pixelSize,
                                       int sampleCount, QRhiRenderBuffer::Hints hints)
    : QRhiRenderBuffer(rhi, type, pixelSize, sampleCount, hints)
{
}

void QD3D11RenderBuffer::release()
{
    if (!tex)
        return;

    if (dsv) {
        dsv->Release();
        dsv = nullptr;
    }

    tex->Release();
    tex = nullptr;
}

bool QD3D11RenderBuffer::build()
{
    if (tex)
        release();

    QRHI_RES_RHI(QRhiD3D11);
    static const DXGI_FORMAT dsFormat = DXGI_FORMAT_D24_UNORM_S8_UINT;
Laszlo Agocs's avatar
Laszlo Agocs committed
1232
    if (m_type == DepthStencil) {
1233 1234
        D3D11_TEXTURE2D_DESC desc;
        memset(&desc, 0, sizeof(desc));
Laszlo Agocs's avatar
Laszlo Agocs committed
1235 1236
        desc.Width = m_pixelSize.width();
        desc.Height = m_pixelSize.height();
1237 1238 1239
        desc.MipLevels = 1;
        desc.ArraySize = 1;
        desc.Format = dsFormat;
1240
        desc.SampleDesc = rhiD->effectiveSampleCount(m_sampleCount);
1241 1242 1243 1244 1245 1246 1247 1248 1249 1250
        desc.Usage = D3D11_USAGE_DEFAULT;
        desc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
        HRESULT hr = rhiD->dev->CreateTexture2D(&desc, nullptr, &tex);
        if (FAILED(hr)) {
            qWarning("Failed to create depth-stencil buffer: %s", qPrintable(comErrorMessage(hr)));
            return false;
        }
        D3D11_DEPTH_STENCIL_VIEW_DESC dsvDesc;
        memset(&dsvDesc, 0, sizeof(dsvDesc));
        dsvDesc.Format = dsFormat;
1251
        dsvDesc.ViewDimension = desc.SampleDesc.Count > 1 ? D3D11_DSV_DIMENSION_TEXTURE2DMS : D3D11_DSV_DIMENSION_TEXTURE2D;
1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317
        hr = rhiD->dev->CreateDepthStencilView(tex, &dsvDesc, &dsv);
        if (FAILED(hr)) {
            qWarning("Failed to create dsv: %s", qPrintable(comErrorMessage(hr)));
            return false;
        }
        return true;
    }

    return false;
}

QD3D11Texture::QD3D11Texture(QRhiImplementation *rhi, Format format, const QSize &pixelSize, Flags flags)
    : QRhiTexture(rhi, format, pixelSize, flags)
{
}

void QD3D11Texture::release()
{
    if (!tex)
        return;

    if (srv) {
        srv->Release();
        srv = nullptr;
    }

    tex->Release();
    tex = nullptr;
}

static inline DXGI_FORMAT toD3DDepthTextureSRVFormat(QRhiTexture::Format format)
{
    switch (format) {
    case QRhiTexture::Format::D16:
        return DXGI_FORMAT_R16_FLOAT;
    case QRhiTexture::Format::D32:
        return DXGI_FORMAT_R32_FLOAT;
    default:
        Q_UNREACHABLE();
        return DXGI_FORMAT_R32_FLOAT;
    }
}

static inline DXGI_FORMAT toD3DDepthTextureDSVFormat(QRhiTexture::Format format)
{
    switch (format) {
    case QRhiTexture::Format::D16:
        return DXGI_FORMAT_D16_UNORM;
    case QRhiTexture::Format::D32:
        return DXGI_FORMAT_D32_FLOAT;
    default:
        Q_UNREACHABLE();
        return DXGI_FORMAT_D32_FLOAT;
    }
}

static inline QSize safeSize(const QSize &size)
{
    return size.isEmpty() ? QSize(16, 16) : size;
}

bool QD3D11Texture::build()
{
    if (tex)
        release();

Laszlo Agocs's avatar
Laszlo Agocs committed
1318 1319 1320 1321
    const QSize size = safeSize(m_pixelSize);
    const bool isDepth = isDepthTextureFormat(m_format);
    const bool isCube = m_flags.testFlag(CubeMap);
    const bool hasMipMaps = m_flags.testFlag(MipMapped);
1322 1323 1324 1325

    mipLevelCount = hasMipMaps ? qCeil(log2(qMax(size.width(), size.height()))) + 1 : 1;

    uint bindFlags = D3D11_BIND_SHADER_RESOURCE;
Laszlo Agocs's avatar
Laszlo Agocs committed
1326
    if (m_flags.testFlag(RenderTarget)) {
1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338
        if (isDepth)
            bindFlags |= D3D11_BIND_DEPTH_STENCIL;
        else
            bindFlags |= D3D11_BIND_RENDER_TARGET;
    }

    D3D11_TEXTURE2D_DESC desc;
    memset(&desc, 0, sizeof(desc));
    desc.Width = size.width();
    desc.Height = size.height();
    desc.MipLevels = mipLevelCount;
    desc.ArraySize = isCube ? 6 : 1;;
1339
    desc.Format = toD3DTextureFormat(m_format, m_flags);
1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353
    desc.SampleDesc.Count = 1;
    desc.Usage = D3D11_USAGE_DEFAULT;
    desc.BindFlags = bindFlags;
    desc.MiscFlags = isCube ? D3D11_RESOURCE_MISC_TEXTURECUBE : 0;

    QRHI_RES_RHI(QRhiD3D11);
    HRESULT hr = rhiD->dev->CreateTexture2D(&desc, nullptr, &tex);
    if (FAILED(hr)) {
        qWarning("Failed to create texture: %s", qPrintable(comErrorMessage(hr)));
        return false;
    }

    D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
    memset(&srvDesc, 0, sizeof(srvDesc));
Laszlo Agocs's avatar
Laszlo Agocs committed
1354
    srvDesc.Format = isDepth ? toD3DDepthTextureSRVFormat(m_format) : desc.Format;
1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445
    if (isCube) {
        srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURECUBE;
        srvDesc.TextureCube.MipLevels = desc.MipLevels;
    } else {
        srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
        srvDesc.Texture2D.MipLevels = desc.MipLevels;
    }

    hr = rhiD->dev->CreateShaderResourceView(tex, &srvDesc, &srv);
    if (FAILED(hr)) {
        qWarning("Failed to create srv: %s", qPrintable(comErrorMessage(hr)));
        return false;
    }

    generation += 1;
    return true;
}

QD3D11Sampler::QD3D11Sampler(QRhiImplementation *rhi, Filter magFilter, Filter minFilter, Filter mipmapMode,
                             AddressMode u, AddressMode v, AddressMode w)
    : QRhiSampler(rhi, magFilter, minFilter, mipmapMode, u, v, w)
{
}

void QD3D11Sampler::release()
{
    if (!samplerState)
        return;

    samplerState->Release();
    samplerState = nullptr;
}

static inline D3D11_FILTER toD3DFilter(QRhiSampler::Filter minFilter, QRhiSampler::Filter magFilter, QRhiSampler::Filter mipFilter)
{
    if (minFilter == QRhiSampler::Nearest) {
        if (magFilter == QRhiSampler::Nearest) {
            if (mipFilter == QRhiSampler::Linear)
                return D3D11_FILTER_MIN_MAG_POINT_MIP_LINEAR;
            else
                return D3D11_FILTER_MIN_MAG_MIP_POINT;
        } else {
            if (mipFilter == QRhiSampler::Linear)
                return D3D11_FILTER_MIN_POINT_MAG_MIP_LINEAR;
            else
                return D3D11_FILTER_MIN_POINT_MAG_LINEAR_MIP_POINT;
        }
    } else {
        if (magFilter == QRhiSampler::Nearest) {
            if (mipFilter == QRhiSampler::Linear)
                return D3D11_FILTER_MIN_LINEAR_MAG_POINT_MIP_LINEAR;
            else
                return D3D11_FILTER_MIN_LINEAR_MAG_MIP_POINT;
        } else {
            if (mipFilter == QRhiSampler::Linear)
                return D3D11_FILTER_MIN_MAG_MIP_LINEAR;
            else
                return D3D11_FILTER_MIN_MAG_LINEAR_MIP_POINT;
        }
    }

    Q_UNREACHABLE();
    return D3D11_FILTER_MIN_MAG_MIP_LINEAR;
}

static inline D3D11_TEXTURE_ADDRESS_MODE toD3DAddressMode(QRhiSampler::AddressMode m)
{
    switch (m) {
    case QRhiSampler::Repeat:
        return D3D11_TEXTURE_ADDRESS_WRAP;
    case QRhiSampler::ClampToEdge:
        return D3D11_TEXTURE_ADDRESS_CLAMP;
    case QRhiSampler::Border:
        return D3D11_TEXTURE_ADDRESS_BORDER;
    case QRhiSampler::Mirror:
        return D3D11_TEXTURE_ADDRESS_MIRROR;
    case QRhiSampler::MirrorOnce:
        return D3D11_TEXTURE_ADDRESS_MIRROR_ONCE;
    default:
        Q_UNREACHABLE();
        return D3D11_TEXTURE_ADDRESS_CLAMP;
    }
}

bool QD3D11Sampler::build()
{
    if (samplerState)
        release();

    D3D11_SAMPLER_DESC desc;
    memset(&desc, 0, sizeof(desc));
Laszlo Agocs's avatar
Laszlo Agocs committed
1446 1447 1448 1449
    desc.Filter = toD3DFilter(m_minFilter, m_magFilter, m_mipmapMode);
    desc.AddressU = toD3DAddressMode(m_addressU);
    desc.AddressV = toD3DAddressMode(m_addressV);
    desc.AddressW = toD3DAddressMode(m_addressW);
1450
    desc.MaxAnisotropy = 1.0f;
Laszlo Agocs's avatar
Laszlo Agocs committed
1451
    desc.MaxLOD = m_mipmapMode == None ? 0.0f : 1000.0f;
1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463

    QRHI_RES_RHI(QRhiD3D11);
    HRESULT hr = rhiD->dev->CreateSamplerState(&desc, &samplerState);
    if (FAILED(hr)) {
        qWarning("Failed to create sampler state: %s", qPrintable(comErrorMessage(hr)));
        return false;
    }

    generation += 1;
    return true;
}

Laszlo Agocs's avatar
Laszlo Agocs committed
1464
// dummy, no Vulkan-style RenderPass+Framebuffer concept here
1465 1466
QD3D11RenderPassDescriptor::QD3D11RenderPassDescriptor(QRhiImplementation *rhi)
    : QRhiRenderPassDescriptor(rhi)
1467 1468 1469
{
}

1470
void QD3D11RenderPassDescriptor::release()
1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501
{
    // nothing to do here
}

QD3D11ReferenceRenderTarget::QD3D11ReferenceRenderTarget(QRhiImplementation *rhi)
    : QRhiReferenceRenderTarget(rhi),
      d(rhi)
{
}

void QD3D11ReferenceRenderTarget::release()
{
    // nothing to do here
}

QRhiRenderTarget::Type QD3D11ReferenceRenderTarget::type() const
{
    return RtRef;
}

QSize QD3D11ReferenceRenderTarget::sizeInPixels() const
{
    return d.pixelSize;
}

QD3D11TextureRenderTarget::QD3D11TextureRenderTarget(QRhiImplementation *rhi,
                                                     const QRhiTextureRenderTargetDescription &desc,
                                                     Flags flags)
    : QRhiTextureRenderTarget(rhi, desc, flags),
      d(rhi)
{
1502
    for (int i = 0; i < QD3D11BasicRenderTargetData::MAX_COLOR_ATTACHMENTS; ++i)
1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516
        rtv[i] = nullptr;
}

void QD3D11TextureRenderTarget::release()
{
    if (!rtv[0] && !dsv)
        return;

    if (dsv) {
        if (ownsDsv)
            dsv->Release();
        dsv = nullptr;
    }

1517
    for (int i = 0; i < QD3D11BasicRenderTargetData::MAX_COLOR_ATTACHMENTS; ++i) {
1518 1519 1520 1521 1522 1523 1524
        if (rtv[i]) {
            rtv[i]->Release();
            rtv[i] = nullptr;
        }
    }
}

1525
QRhiRenderPassDescriptor *QD3D11TextureRenderTarget::newCompatibleRenderPassDescriptor()
Laszlo Agocs's avatar
Laszlo Agocs committed
1526
{
1527
    return new QD3D11RenderPassDescriptor(rhi);
Laszlo Agocs's avatar
Laszlo Agocs committed
1528 1529
}

1530 1531 1532 1533 1534
bool QD3D11TextureRenderTarget::build()
{
    if (rtv[0] || dsv)
        release();

Laszlo Agocs's avatar
Laszlo Agocs committed
1535 1536 1537
    Q_ASSERT(!m_desc.colorAttachments.isEmpty() || m_desc.depthTexture);
    Q_ASSERT(!m_desc.depthStencilBuffer || !m_desc.depthTexture);
    const bool hasDepthStencil = m_desc.depthStencilBuffer || m_desc.depthTexture;
1538 1539 1540

    QRHI_RES_RHI(QRhiD3D11);

Laszlo Agocs's avatar
Laszlo Agocs committed
1541
    d.colorAttCount = m_desc.colorAttachments.count();
1542
    for (int i = 0; i < d.colorAttCount; ++i) {
Laszlo Agocs's avatar
Laszlo Agocs committed
1543
        QRhiTexture *texture = m_desc.colorAttachments[i].texture;
1544 1545 1546
        QD3D11Texture *texD = QRHI_RES(QD3D11Texture, texture);
        D3D11_RENDER_TARGET_VIEW_DESC rtvDesc;
        memset(&rtvDesc, 0, sizeof(rtvDesc));
1547
        rtvDesc.Format = toD3DTextureFormat(texD->format(), texD->flags());
Laszlo Agocs's avatar
Laszlo Agocs committed
1548
        if (texD->flags().testFlag(QRhiTexture::CubeMap)) {
1549
            rtvDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2DARRAY;
Laszlo Agocs's avatar
Laszlo Agocs committed
1550
            rtvDesc.Texture2DArray.FirstArraySlice = m_desc.colorAttachments[i].layer;
1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562
            rtvDesc.Texture2DArray.ArraySize = 1;
        } else {
            rtvDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
        }

        HRESULT hr = rhiD->dev->CreateRenderTargetView(texD->tex, &rtvDesc, &rtv[i]);
        if (FAILED(hr)) {
            qWarning("Failed to create rtv: %s", qPrintable(comErrorMessage(hr)));
            return false;
        }

        if (i == 0)
Laszlo Agocs's avatar
Laszlo Agocs committed
1563
            d.pixelSize = texD->pixelSize();
1564 1565 1566
    }

    if (hasDepthStencil) {
Laszlo Agocs's avatar
Laszlo Agocs committed
1567
        if (m_desc.depthTexture) {
1568 1569 1570
            ownsDsv = true;
            D3D11_DEPTH_STENCIL_VIEW_DESC dsvDesc;
            memset(&dsvDesc, 0, sizeof(dsvDesc));
Laszlo Agocs's avatar
Laszlo Agocs committed
1571
            dsvDesc.Format = toD3DDepthTextureDSVFormat(m_desc.depthTexture->format());
1572
            dsvDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;
Laszlo Agocs's avatar
Laszlo Agocs committed
1573
            HRESULT hr = rhiD->dev->CreateDepthStencilView(QRHI_RES(QD3D11Texture, m_desc.depthTexture)->tex, &dsvDesc, &dsv);
1574 1575 1576 1577 1578
            if (FAILED(hr)) {
                qWarning("Failed to create dsv: %s", qPrintable(comErrorMessage(hr)));
                return false;
            }
            if (d.colorAttCount == 0)
Laszlo Agocs's avatar
Laszlo Agocs committed
1579
                d.pixelSize = m_desc.depthTexture->pixelSize();
1580 1581
        } else {
            ownsDsv = false;
Laszlo Agocs's avatar
Laszlo Agocs committed
1582
            dsv = QRHI_RES(QD3D11RenderBuffer, m_desc.depthStencilBuffer)->dsv;
1583
            if (d.colorAttCount == 0)
Laszlo Agocs's avatar
Laszlo Agocs committed
1584
                d.pixelSize = m_desc.depthStencilBuffer->pixelSize();
Laszlo Agocs's avatar