150 lines
4.1 KiB
C++
150 lines
4.1 KiB
C++
// Copyright 2014 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <array>
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#include "Common/CommonTypes.h"
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#include "Common/MsgHandler.h"
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#include "VideoBackends/D3D/D3DBoundingBox.h"
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#include "VideoBackends/D3D/D3DState.h"
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#include "VideoBackends/D3DCommon/D3DCommon.h"
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#include "VideoCommon/VideoConfig.h"
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namespace DX11
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{
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static constexpr u32 NUM_BBOX_VALUES = 4;
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static ComPtr<ID3D11Buffer> s_bbox_buffer;
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static ComPtr<ID3D11Buffer> s_bbox_staging_buffer;
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static ComPtr<ID3D11UnorderedAccessView> s_bbox_uav;
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static std::array<s32, NUM_BBOX_VALUES> s_bbox_values;
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static std::array<bool, NUM_BBOX_VALUES> s_bbox_dirty;
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static bool s_bbox_valid = false;
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ID3D11UnorderedAccessView* BBox::GetUAV()
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{
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return s_bbox_uav.Get();
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}
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void BBox::Init()
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{
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if (!g_ActiveConfig.backend_info.bSupportsBBox)
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return;
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// Create 2 buffers here.
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// First for unordered access on default pool.
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auto desc = CD3D11_BUFFER_DESC(NUM_BBOX_VALUES * sizeof(s32), D3D11_BIND_UNORDERED_ACCESS,
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D3D11_USAGE_DEFAULT, 0, 0, sizeof(s32));
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const s32 initial_values[NUM_BBOX_VALUES] = {0, 0, 0, 0};
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D3D11_SUBRESOURCE_DATA data;
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data.pSysMem = initial_values;
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data.SysMemPitch = NUM_BBOX_VALUES * sizeof(s32);
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data.SysMemSlicePitch = 0;
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HRESULT hr;
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hr = D3D::device->CreateBuffer(&desc, &data, &s_bbox_buffer);
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CHECK(SUCCEEDED(hr), "Create BoundingBox Buffer.");
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D3DCommon::SetDebugObjectName(s_bbox_buffer.Get(), "BoundingBox Buffer");
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// Second to use as a staging buffer.
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desc.Usage = D3D11_USAGE_STAGING;
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desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
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desc.BindFlags = 0;
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hr = D3D::device->CreateBuffer(&desc, nullptr, &s_bbox_staging_buffer);
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CHECK(SUCCEEDED(hr), "Create BoundingBox Staging Buffer.");
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D3DCommon::SetDebugObjectName(s_bbox_staging_buffer.Get(), "BoundingBox Staging Buffer");
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// UAV is required to allow concurrent access.
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D3D11_UNORDERED_ACCESS_VIEW_DESC UAVdesc = {};
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UAVdesc.Format = DXGI_FORMAT_R32_SINT;
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UAVdesc.ViewDimension = D3D11_UAV_DIMENSION_BUFFER;
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UAVdesc.Buffer.FirstElement = 0;
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UAVdesc.Buffer.Flags = 0;
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UAVdesc.Buffer.NumElements = NUM_BBOX_VALUES;
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hr = D3D::device->CreateUnorderedAccessView(s_bbox_buffer.Get(), &UAVdesc, &s_bbox_uav);
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CHECK(SUCCEEDED(hr), "Create BoundingBox UAV.");
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D3DCommon::SetDebugObjectName(s_bbox_uav.Get(), "BoundingBox UAV");
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D3D::stateman->SetOMUAV(s_bbox_uav.Get());
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s_bbox_dirty = {};
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s_bbox_valid = true;
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}
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void BBox::Shutdown()
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{
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s_bbox_uav.Reset();
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s_bbox_staging_buffer.Reset();
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s_bbox_buffer.Reset();
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}
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void BBox::Flush()
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{
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s_bbox_valid = false;
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if (std::none_of(s_bbox_dirty.begin(), s_bbox_dirty.end(), [](bool dirty) { return dirty; }))
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return;
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for (u32 start = 0; start < NUM_BBOX_VALUES;)
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{
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if (!s_bbox_dirty[start])
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{
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start++;
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continue;
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}
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u32 end = start + 1;
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s_bbox_dirty[start] = false;
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for (; end < NUM_BBOX_VALUES; end++)
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{
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if (!s_bbox_dirty[end])
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break;
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s_bbox_dirty[end] = false;
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}
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D3D11_BOX box{start * sizeof(s32), 0, 0, end * sizeof(s32), 1, 1};
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D3D::context->UpdateSubresource(s_bbox_buffer.Get(), 0, &box, &s_bbox_values[start], 0, 0);
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}
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}
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void BBox::Readback()
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{
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D3D::context->CopyResource(s_bbox_staging_buffer.Get(), s_bbox_buffer.Get());
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D3D11_MAPPED_SUBRESOURCE map;
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HRESULT hr = D3D::context->Map(s_bbox_staging_buffer.Get(), 0, D3D11_MAP_READ, 0, &map);
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if (SUCCEEDED(hr))
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{
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for (u32 i = 0; i < NUM_BBOX_VALUES; i++)
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{
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if (!s_bbox_dirty[i])
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{
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std::memcpy(&s_bbox_values[i], reinterpret_cast<const u8*>(map.pData) + sizeof(s32) * i,
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sizeof(s32));
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}
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}
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D3D::context->Unmap(s_bbox_staging_buffer.Get(), 0);
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}
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s_bbox_valid = true;
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}
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void BBox::Set(int index, int value)
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{
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if (s_bbox_valid && s_bbox_values[index] == value)
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return;
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s_bbox_values[index] = value;
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s_bbox_dirty[index] = true;
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}
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int BBox::Get(int index)
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{
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if (!s_bbox_valid)
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Readback();
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return s_bbox_values[index];
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}
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}; // namespace DX11
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