dolphin/Source/Core/VideoBackends/D3D/PSTextureEncoder.cpp

195 lines
6.8 KiB
C++

// Copyright 2011 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "VideoBackends/D3D/PSTextureEncoder.h"
#include "Common/Logging/Log.h"
#include "Core/HW/Memmap.h"
#include "VideoBackends/D3D/D3DBase.h"
#include "VideoBackends/D3D/D3DShader.h"
#include "VideoBackends/D3D/D3DState.h"
#include "VideoBackends/D3D/D3DUtil.h"
#include "VideoBackends/D3D/FramebufferManager.h"
#include "VideoBackends/D3D/Render.h"
#include "VideoBackends/D3D/TextureCache.h"
#include "VideoBackends/D3D/VertexShaderCache.h"
#include "VideoCommon/TextureConversionShader.h"
#include "VideoCommon/VideoCommon.h"
namespace DX11
{
struct EFBEncodeParams
{
DWORD SrcLeft;
DWORD SrcTop;
DWORD DestWidth;
DWORD ScaleFactor;
};
PSTextureEncoder::PSTextureEncoder()
: m_ready(false), m_out(nullptr), m_outRTV(nullptr), m_outStage(nullptr),
m_encodeParams(nullptr)
{
}
void PSTextureEncoder::Init()
{
m_ready = false;
HRESULT hr;
// Create output texture RGBA format
D3D11_TEXTURE2D_DESC t2dd = CD3D11_TEXTURE2D_DESC(DXGI_FORMAT_B8G8R8A8_UNORM, EFB_WIDTH * 4,
EFB_HEIGHT / 4, 1, 1, D3D11_BIND_RENDER_TARGET);
hr = D3D::device->CreateTexture2D(&t2dd, nullptr, &m_out);
CHECK(SUCCEEDED(hr), "create efb encode output texture");
D3D::SetDebugObjectName(m_out, "efb encoder output texture");
// Create output render target view
D3D11_RENDER_TARGET_VIEW_DESC rtvd = CD3D11_RENDER_TARGET_VIEW_DESC(
m_out, D3D11_RTV_DIMENSION_TEXTURE2D, DXGI_FORMAT_B8G8R8A8_UNORM);
hr = D3D::device->CreateRenderTargetView(m_out, &rtvd, &m_outRTV);
CHECK(SUCCEEDED(hr), "create efb encode output render target view");
D3D::SetDebugObjectName(m_outRTV, "efb encoder output rtv");
// Create output staging buffer
t2dd.Usage = D3D11_USAGE_STAGING;
t2dd.BindFlags = 0;
t2dd.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
hr = D3D::device->CreateTexture2D(&t2dd, nullptr, &m_outStage);
CHECK(SUCCEEDED(hr), "create efb encode output staging buffer");
D3D::SetDebugObjectName(m_outStage, "efb encoder output staging buffer");
// Create constant buffer for uploading data to shaders
D3D11_BUFFER_DESC bd = CD3D11_BUFFER_DESC(sizeof(EFBEncodeParams), D3D11_BIND_CONSTANT_BUFFER);
hr = D3D::device->CreateBuffer(&bd, nullptr, &m_encodeParams);
CHECK(SUCCEEDED(hr), "create efb encode params buffer");
D3D::SetDebugObjectName(m_encodeParams, "efb encoder params buffer");
m_ready = true;
}
void PSTextureEncoder::Shutdown()
{
m_ready = false;
for (auto& it : m_encoding_shaders)
{
SAFE_RELEASE(it.second);
}
m_encoding_shaders.clear();
SAFE_RELEASE(m_encodeParams);
SAFE_RELEASE(m_outStage);
SAFE_RELEASE(m_outRTV);
SAFE_RELEASE(m_out);
}
void PSTextureEncoder::Encode(u8* dst, const EFBCopyParams& params, u32 native_width,
u32 bytes_per_row, u32 num_blocks_y, u32 memory_stride,
const EFBRectangle& src_rect, bool scale_by_half)
{
if (!m_ready) // Make sure we initialized OK
return;
HRESULT hr;
// Resolve MSAA targets before copying.
// FIXME: Instead of resolving EFB, it would be better to pick out a
// single sample from each pixel. The game may break if it isn't
// expecting the blurred edges around multisampled shapes.
ID3D11ShaderResourceView* pEFB = params.depth ?
FramebufferManager::GetResolvedEFBDepthTexture()->GetSRV() :
FramebufferManager::GetResolvedEFBColorTexture()->GetSRV();
// Reset API
g_renderer->ResetAPIState();
// Set up all the state for EFB encoding
{
const u32 words_per_row = bytes_per_row / sizeof(u32);
D3D11_VIEWPORT vp = CD3D11_VIEWPORT(0.f, 0.f, FLOAT(words_per_row), FLOAT(num_blocks_y));
D3D::context->RSSetViewports(1, &vp);
constexpr EFBRectangle fullSrcRect(0, 0, EFB_WIDTH, EFB_HEIGHT);
TargetRectangle targetRect = g_renderer->ConvertEFBRectangle(fullSrcRect);
D3D::context->OMSetRenderTargets(1, &m_outRTV, nullptr);
EFBEncodeParams encode_params;
encode_params.SrcLeft = src_rect.left;
encode_params.SrcTop = src_rect.top;
encode_params.DestWidth = native_width;
encode_params.ScaleFactor = scale_by_half ? 2 : 1;
D3D::context->UpdateSubresource(m_encodeParams, 0, nullptr, &encode_params, 0, 0);
D3D::stateman->SetPixelConstants(m_encodeParams);
// We also linear filtering for both box filtering and downsampling higher resolutions to 1x
// TODO: This only produces perfect downsampling for 2x IR, other resolutions will need more
// complex down filtering to average all pixels and produce the correct result.
// Also, box filtering won't be correct for anything other than 1x IR
if (scale_by_half || g_ActiveConfig.iEFBScale != 1)
D3D::SetLinearCopySampler();
else
D3D::SetPointCopySampler();
D3D::drawShadedTexQuad(pEFB, targetRect.AsRECT(), g_renderer->GetTargetWidth(),
g_renderer->GetTargetHeight(), GetEncodingPixelShader(params),
VertexShaderCache::GetSimpleVertexShader(),
VertexShaderCache::GetSimpleInputLayout());
// Copy to staging buffer
D3D11_BOX srcBox = CD3D11_BOX(0, 0, 0, words_per_row, num_blocks_y, 1);
D3D::context->CopySubresourceRegion(m_outStage, 0, 0, 0, 0, m_out, 0, &srcBox);
// Transfer staging buffer to GameCube/Wii RAM
D3D11_MAPPED_SUBRESOURCE map = {0};
hr = D3D::context->Map(m_outStage, 0, D3D11_MAP_READ, 0, &map);
CHECK(SUCCEEDED(hr), "map staging buffer (0x%x)", hr);
u8* src = (u8*)map.pData;
u32 readStride = std::min(bytes_per_row, map.RowPitch);
for (unsigned int y = 0; y < num_blocks_y; ++y)
{
memcpy(dst, src, readStride);
dst += memory_stride;
src += map.RowPitch;
}
D3D::context->Unmap(m_outStage, 0);
}
// Restore API
g_renderer->RestoreAPIState();
D3D::context->OMSetRenderTargets(1, &FramebufferManager::GetEFBColorTexture()->GetRTV(),
FramebufferManager::GetEFBDepthTexture()->GetDSV());
}
ID3D11PixelShader* PSTextureEncoder::GetEncodingPixelShader(const EFBCopyParams& params)
{
auto iter = m_encoding_shaders.find(params);
if (iter != m_encoding_shaders.end())
return iter->second;
D3DBlob* bytecode = nullptr;
const char* shader = TextureConversionShader::GenerateEncodingShader(params, APIType::D3D);
if (!D3D::CompilePixelShader(shader, &bytecode))
{
PanicAlert("Failed to compile texture encoding shader.");
m_encoding_shaders[params] = nullptr;
return nullptr;
}
ID3D11PixelShader* newShader;
HRESULT hr =
D3D::device->CreatePixelShader(bytecode->Data(), bytecode->Size(), nullptr, &newShader);
CHECK(SUCCEEDED(hr), "create efb encoder pixel shader");
m_encoding_shaders.emplace(params, newShader);
return newShader;
}
}