/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "D3D11Checks.h"
#include "DXVA2Manager.h"
#include "gfxConfig.h"
#include "GfxDriverInfo.h"
#include "gfxWindowsPlatform.h"
#include "mozilla/RefPtr.h"
#include "mozilla/StaticPrefs_gfx.h"
#include "mozilla/StaticPrefs_layers.h"
#include "mozilla/StaticPrefs_media.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/layers/TextureD3D11.h"
#include "nsIGfxInfo.h"
#include <dxgi.h>
#include <dxgi1_2.h>
#include <d3d10_1.h>
#include <d3d11.h>

namespace mozilla {
namespace gfx {

using namespace mozilla::widget;
using mozilla::layers::AutoTextureLock;

/* static */
bool D3D11Checks::DoesRenderTargetViewNeedRecreating(ID3D11Device* aDevice) {
  bool result = false;
  // CreateTexture2D is known to crash on lower feature levels, see bugs
  // 1170211 and 1089413.
  if (aDevice->GetFeatureLevel() < D3D_FEATURE_LEVEL_10_0) {
    return true;
  }

  RefPtr<ID3D11DeviceContext> deviceContext;
  aDevice->GetImmediateContext(getter_AddRefs(deviceContext));
  int backbufferWidth = 32;
  int backbufferHeight = 32;
  RefPtr<ID3D11Texture2D> offscreenTexture;
  RefPtr<IDXGIKeyedMutex> keyedMutex;

  D3D11_TEXTURE2D_DESC offscreenTextureDesc = {0};
  offscreenTextureDesc.Width = backbufferWidth;
  offscreenTextureDesc.Height = backbufferHeight;
  offscreenTextureDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
  offscreenTextureDesc.MipLevels = 0;
  offscreenTextureDesc.ArraySize = 1;
  offscreenTextureDesc.SampleDesc.Count = 1;
  offscreenTextureDesc.SampleDesc.Quality = 0;
  offscreenTextureDesc.Usage = D3D11_USAGE_DEFAULT;
  offscreenTextureDesc.BindFlags =
      D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
  offscreenTextureDesc.CPUAccessFlags = 0;
  offscreenTextureDesc.MiscFlags = D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX;

  HRESULT hr = aDevice->CreateTexture2D(&offscreenTextureDesc, NULL,
                                        getter_AddRefs(offscreenTexture));
  if (FAILED(hr)) {
    gfxCriticalNote << "DoesRecreatingCreateTexture2DFail";
    return false;
  }

  hr = offscreenTexture->QueryInterface(__uuidof(IDXGIKeyedMutex),
                                        (void**)getter_AddRefs(keyedMutex));
  if (FAILED(hr)) {
    gfxCriticalNote << "DoesRecreatingKeyedMutexFailed";
    return false;
  }
  D3D11_RENDER_TARGET_VIEW_DESC offscreenRTVDesc;
  offscreenRTVDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
  offscreenRTVDesc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
  offscreenRTVDesc.Texture2D.MipSlice = 0;

  RefPtr<ID3D11RenderTargetView> offscreenRTView;
  hr = aDevice->CreateRenderTargetView(offscreenTexture, &offscreenRTVDesc,
                                       getter_AddRefs(offscreenRTView));
  if (FAILED(hr)) {
    gfxCriticalNote << "DoesRecreatingCreateRenderTargetViewFailed";
    return false;
  }

  {
    // Acquire and clear
    HRESULT hr;
    AutoTextureLock lock(keyedMutex, hr, INFINITE);
    FLOAT color1[4] = {1, 1, 0.5, 1};
    deviceContext->ClearRenderTargetView(offscreenRTView, color1);
  }

  {
    HRESULT hr;
    AutoTextureLock lock(keyedMutex, hr, INFINITE);
    FLOAT color2[4] = {1, 1, 0, 1};

    deviceContext->ClearRenderTargetView(offscreenRTView, color2);
    D3D11_TEXTURE2D_DESC desc;

    offscreenTexture->GetDesc(&desc);
    desc.Usage = D3D11_USAGE_STAGING;
    desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
    desc.MiscFlags = 0;
    desc.BindFlags = 0;
    RefPtr<ID3D11Texture2D> cpuTexture;
    hr = aDevice->CreateTexture2D(&desc, NULL, getter_AddRefs(cpuTexture));
    if (FAILED(hr)) {
      gfxCriticalNote << "DoesRecreatingCreateCPUTextureFailed";
      return false;
    }

    deviceContext->CopyResource(cpuTexture, offscreenTexture);

    D3D11_MAPPED_SUBRESOURCE mapped;
    hr = deviceContext->Map(cpuTexture, 0, D3D11_MAP_READ, 0, &mapped);
    if (FAILED(hr)) {
      gfxCriticalNote << "DoesRecreatingMapFailed " << hexa(hr);
      return false;
    }
    int resultColor = *(int*)mapped.pData;
    deviceContext->Unmap(cpuTexture, 0);
    cpuTexture = nullptr;

    // XXX on some drivers resultColor will not have changed to
    // match the clear
    if (resultColor != 0xffffff00) {
      gfxCriticalNote << "RenderTargetViewNeedsRecreating";
      result = true;
    }
  }
  return result;
}

/* static */
bool D3D11Checks::DoesDeviceWork() {
  static bool checked = false;
  static bool result = false;

  if (checked) return result;
  checked = true;

  if (StaticPrefs::gfx_direct2d_force_enabled_AtStartup() ||
      gfxConfig::IsForcedOnByUser(Feature::HW_COMPOSITING)) {
    result = true;
    return true;
  }

  if (GetModuleHandleW(L"igd10umd32.dll")) {
    const wchar_t* checkModules[] = {L"dlumd32.dll", L"dlumd11.dll",
                                     L"dlumd10.dll"};
    for (int i = 0; i < PR_ARRAY_SIZE(checkModules); i += 1) {
      if (GetModuleHandleW(checkModules[i])) {
        nsString displayLinkModuleVersionString;
        gfxWindowsPlatform::GetDLLVersion(checkModules[i],
                                          displayLinkModuleVersionString);
        uint64_t displayLinkModuleVersion;
        if (!ParseDriverVersion(displayLinkModuleVersionString,
                                &displayLinkModuleVersion)) {
          gfxCriticalError()
              << "DisplayLink: could not parse version " << checkModules[i];
          return false;
        }
        if (displayLinkModuleVersion <= V(8, 6, 1, 36484)) {
          NS_ConvertUTF16toUTF8 version(displayLinkModuleVersionString);
          gfxCriticalError(CriticalLog::DefaultOptions(false))
              << "DisplayLink: too old version " << version.get();
          return false;
        }
      }
    }
  }
  result = true;
  return true;
}

static bool TryCreateTexture2D(ID3D11Device* device, D3D11_TEXTURE2D_DESC* desc,
                               D3D11_SUBRESOURCE_DATA* data,
                               RefPtr<ID3D11Texture2D>& texture) {
  // Older Intel driver version (see bug 1221348 for version #s) crash when
  // creating a texture with shared keyed mutex and data.
  MOZ_SEH_TRY {
    return !FAILED(
        device->CreateTexture2D(desc, data, getter_AddRefs(texture)));
  }
  MOZ_SEH_EXCEPT(EXCEPTION_EXECUTE_HANDLER) {
    // For now we want to aggregrate all the crash signature to a known crash.
    gfxDevCrash(LogReason::TextureCreation)
        << "Crash creating texture. See bug 1221348.";
    return false;
  }
}

// See bug 1083071. On some drivers, Direct3D 11 CreateShaderResourceView fails
// with E_OUTOFMEMORY.
static bool DoesTextureSharingWorkInternal(ID3D11Device* device,
                                           DXGI_FORMAT format, UINT bindflags) {
  // CreateTexture2D is known to crash on lower feature levels, see bugs
  // 1170211 and 1089413.
  if (device->GetFeatureLevel() < D3D_FEATURE_LEVEL_10_0) {
    return false;
  }

  if (StaticPrefs::gfx_direct2d_force_enabled_AtStartup() ||
      gfxConfig::IsForcedOnByUser(Feature::HW_COMPOSITING)) {
    return true;
  }

  if (GetModuleHandleW(L"atidxx32.dll")) {
    nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
    if (gfxInfo) {
      nsString vendorID, vendorID2;
      gfxInfo->GetAdapterVendorID(vendorID);
      gfxInfo->GetAdapterVendorID2(vendorID2);
      if (vendorID.EqualsLiteral("0x8086") && vendorID2.IsEmpty()) {
        if (!StaticPrefs::layers_amd_switchable_gfx_enabled_AtStartup()) {
          return false;
        }
        gfxCriticalError(CriticalLog::DefaultOptions(false))
            << "PossiblyBrokenSurfaceSharing_UnexpectedAMDGPU";
      }
    }
  }

  RefPtr<ID3D11Texture2D> texture;
  D3D11_TEXTURE2D_DESC desc;
  const int texture_size = 32;
  desc.Width = texture_size;
  desc.Height = texture_size;
  desc.MipLevels = 1;
  desc.ArraySize = 1;
  desc.Format = format;
  desc.SampleDesc.Count = 1;
  desc.SampleDesc.Quality = 0;
  desc.Usage = D3D11_USAGE_DEFAULT;
  desc.CPUAccessFlags = 0;
  desc.MiscFlags = D3D11_RESOURCE_MISC_SHARED_KEYEDMUTEX;
  desc.BindFlags = bindflags;

  uint32_t color[texture_size * texture_size];
  for (size_t i = 0; i < sizeof(color) / sizeof(color[0]); i++) {
    color[i] = 0xff00ffff;
  }
  // XXX If we pass the data directly at texture creation time we
  //     get a crash on Intel 8.5.10.[18xx-1994] drivers.
  //     We can work around this issue by doing UpdateSubresource.
  if (!TryCreateTexture2D(device, &desc, nullptr, texture)) {
    gfxCriticalNote << "DoesD3D11TextureSharingWork_TryCreateTextureFailure";
    return false;
  }

  RefPtr<IDXGIKeyedMutex> sourceSharedMutex;
  texture->QueryInterface(__uuidof(IDXGIKeyedMutex),
                          (void**)getter_AddRefs(sourceSharedMutex));
  if (FAILED(sourceSharedMutex->AcquireSync(0, 30 * 1000))) {
    gfxCriticalError() << "DoesD3D11TextureSharingWork_SourceMutexTimeout";
    // only wait for 30 seconds
    return false;
  }

  RefPtr<ID3D11DeviceContext> deviceContext;
  device->GetImmediateContext(getter_AddRefs(deviceContext));

  int stride = texture_size * 4;
  deviceContext->UpdateSubresource(texture, 0, nullptr, color, stride,
                                   stride * texture_size);

  if (FAILED(sourceSharedMutex->ReleaseSync(0))) {
    gfxCriticalError()
        << "DoesD3D11TextureSharingWork_SourceReleaseSyncTimeout";
    return false;
  }

  HANDLE shareHandle;
  RefPtr<IDXGIResource> otherResource;
  if (FAILED(texture->QueryInterface(__uuidof(IDXGIResource),
                                     getter_AddRefs(otherResource)))) {
    gfxCriticalError() << "DoesD3D11TextureSharingWork_GetResourceFailure";
    return false;
  }

  if (FAILED(otherResource->GetSharedHandle(&shareHandle))) {
    gfxCriticalError() << "DoesD3D11TextureSharingWork_GetSharedTextureFailure";
    return false;
  }

  RefPtr<ID3D11Resource> sharedResource;
  RefPtr<ID3D11Texture2D> sharedTexture;
  if (FAILED(device->OpenSharedResource(shareHandle, __uuidof(ID3D11Resource),
                                        getter_AddRefs(sharedResource)))) {
    gfxCriticalError(CriticalLog::DefaultOptions(false))
        << "OpenSharedResource failed for format " << format;
    return false;
  }

  if (FAILED(sharedResource->QueryInterface(__uuidof(ID3D11Texture2D),
                                            getter_AddRefs(sharedTexture)))) {
    gfxCriticalError() << "DoesD3D11TextureSharingWork_GetSharedTextureFailure";
    return false;
  }

  // create a staging texture for readback
  RefPtr<ID3D11Texture2D> cpuTexture;
  desc.Usage = D3D11_USAGE_STAGING;
  desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
  desc.MiscFlags = 0;
  desc.BindFlags = 0;
  if (FAILED(device->CreateTexture2D(&desc, nullptr,
                                     getter_AddRefs(cpuTexture)))) {
    gfxCriticalError() << "DoesD3D11TextureSharingWork_CreateTextureFailure";
    return false;
  }

  RefPtr<IDXGIKeyedMutex> sharedMutex;
  sharedResource->QueryInterface(__uuidof(IDXGIKeyedMutex),
                                 (void**)getter_AddRefs(sharedMutex));
  {
    HRESULT hr;
    AutoTextureLock lock(sharedMutex, hr, 30 * 1000);
    if (FAILED(hr)) {
      gfxCriticalError() << "DoesD3D11TextureSharingWork_AcquireSyncTimeout";
      // only wait for 30 seconds
      return false;
    }

    // Copy to the cpu texture so that we can readback
    deviceContext->CopyResource(cpuTexture, sharedTexture);

    // We only need to hold on to the mutex during the copy.
    sharedMutex->ReleaseSync(0);
  }

  D3D11_MAPPED_SUBRESOURCE mapped;
  uint32_t resultColor = 0;
  if (SUCCEEDED(
          deviceContext->Map(cpuTexture, 0, D3D11_MAP_READ, 0, &mapped))) {
    // read the texture
    resultColor = *(uint32_t*)mapped.pData;
    deviceContext->Unmap(cpuTexture, 0);
  } else {
    gfxCriticalError() << "DoesD3D11TextureSharingWork_MapFailed";
    return false;
  }

  // check that the color we put in is the color we get out
  if (resultColor != color[0]) {
    // Shared surfaces seem to be broken on dual AMD & Intel HW when using the
    // AMD GPU
    gfxCriticalNote << "DoesD3D11TextureSharingWork_ColorMismatch";
    return false;
  }

  RefPtr<ID3D11ShaderResourceView> sharedView;

  // This if(FAILED()) is the one that actually fails on systems affected by bug
  // 1083071.
  if (FAILED(device->CreateShaderResourceView(sharedTexture, NULL,
                                              getter_AddRefs(sharedView)))) {
    gfxCriticalNote << "CreateShaderResourceView failed for format" << format;
    return false;
  }

  return true;
}

/* static */
bool D3D11Checks::DoesTextureSharingWork(ID3D11Device* device) {
  return DoesTextureSharingWorkInternal(
      device, DXGI_FORMAT_B8G8R8A8_UNORM,
      D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE);
}

/* static */
bool D3D11Checks::DoesAlphaTextureSharingWork(ID3D11Device* device) {
  return DoesTextureSharingWorkInternal(device, DXGI_FORMAT_R8_UNORM,
                                        D3D11_BIND_SHADER_RESOURCE);
}

/* static */
bool D3D11Checks::GetDxgiDesc(ID3D11Device* device, DXGI_ADAPTER_DESC* out) {
  RefPtr<IDXGIDevice> dxgiDevice;
  HRESULT hr =
      device->QueryInterface(__uuidof(IDXGIDevice), getter_AddRefs(dxgiDevice));
  if (FAILED(hr)) {
    return false;
  }

  RefPtr<IDXGIAdapter> dxgiAdapter;
  if (FAILED(dxgiDevice->GetAdapter(getter_AddRefs(dxgiAdapter)))) {
    return false;
  }

  return SUCCEEDED(dxgiAdapter->GetDesc(out));
}

/* static */
void D3D11Checks::WarnOnAdapterMismatch(ID3D11Device* device) {
  DXGI_ADAPTER_DESC desc;
  PodZero(&desc);
  GetDxgiDesc(device, &desc);

  nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
  nsString vendorID;
  gfxInfo->GetAdapterVendorID(vendorID);
  nsresult ec;
  int32_t vendor = vendorID.ToInteger(&ec, 16);
  if (vendor != desc.VendorId) {
    gfxCriticalNote << "VendorIDMismatch V " << hexa(vendor) << " "
                    << hexa(desc.VendorId);
  }
}

/* static */
bool D3D11Checks::DoesRemotePresentWork(IDXGIAdapter* adapter) {
  // Remote presentation was added in DXGI 1.2, for Windows 8 and the Platform
  // Update to Windows 7.
  RefPtr<IDXGIAdapter2> check;
  HRESULT hr =
      adapter->QueryInterface(__uuidof(IDXGIAdapter2), getter_AddRefs(check));
  return SUCCEEDED(hr) && check;
}

/* static */ D3D11Checks::VideoFormatOptionSet D3D11Checks::FormatOptions(
    ID3D11Device* device) {
  auto doesNV12Work = [&]() {
    if (gfxVars::DXNV12Blocked()) {
      return false;
    }

    DXGI_ADAPTER_DESC desc;
    PodZero(&desc);
    if (!GetDxgiDesc(device, &desc)) {
      // Failed to retrieve device information, assume it doesn't work
      return false;
    }

    UINT formatSupport;
    HRESULT hr = device->CheckFormatSupport(DXGI_FORMAT_NV12, &formatSupport);
    if (FAILED(hr) || !(formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE2D)) {
      return false;
    }

    nsString version;
    nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
    if (gfxInfo) {
      gfxInfo->GetAdapterDriverVersion(version);
    }
    return DXVA2Manager::IsNV12Supported(desc.VendorId, desc.DeviceId, version);
  };

  auto doesP010Work = [&]() {
    if (gfxVars::DXP010Blocked() &&
        !StaticPrefs::media_wmf_force_allow_p010_format()) {
      return false;
    }
    UINT formatSupport;
    HRESULT hr = device->CheckFormatSupport(DXGI_FORMAT_P010, &formatSupport);
    return (SUCCEEDED(hr) && (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE2D));
  };

  auto doesP016Work = [&]() {
    if (gfxVars::DXP016Blocked() &&
        !StaticPrefs::media_wmf_force_allow_p010_format()) {
      return false;
    }
    UINT formatSupport;
    HRESULT hr = device->CheckFormatSupport(DXGI_FORMAT_P016, &formatSupport);
    return (SUCCEEDED(hr) && (formatSupport & D3D11_FORMAT_SUPPORT_TEXTURE2D));
  };

  VideoFormatOptionSet options;
  if (!doesNV12Work()) {
    // If the device doesn't support NV12, there's really no point testing for
    // P010 and P016.
    return options;
  }
  options += VideoFormatOption::NV12;
  if (doesP010Work()) {
    options += VideoFormatOption::P010;
  }
  if (doesP016Work()) {
    options += VideoFormatOption::P016;
  }
  return options;
}

}  // namespace gfx
}  // namespace mozilla