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#include "d3d11_context.h"
#include "d3d11_device.h"
#include "d3d11_gdi.h"
#ifndef DXVK_NATIVE
#include "../util/util_gdi.h"
#endif
namespace dxvk {
D3D11GDISurface::D3D11GDISurface(
ID3D11Resource* pResource,
UINT Subresource)
: m_resource (pResource),
m_subresource (Subresource),
m_readback (nullptr),
m_hdc (nullptr),
m_hbitmap (nullptr),
m_acquired (false) {
// Allocate memory for the bitmap
auto tex = GetCommonTexture(m_resource)->Desc();
m_data.resize(tex->Width * tex->Height);
// Create GDI DC
D3DKMT_CREATEDCFROMMEMORY desc;
desc.pMemory = m_data.data();
desc.Format = D3DFMT_A8R8G8B8;
desc.Width = tex->Width;
desc.Height = tex->Height;
desc.Pitch = tex->Width * sizeof(uint32_t);
desc.hDeviceDc = CreateCompatibleDC(nullptr);
desc.pColorTable = nullptr;
desc.hDc = nullptr;
desc.hBitmap = nullptr;
if (D3DKMTCreateDCFromMemory(&desc))
Logger::err(str::format("D3D11: Failed to create GDI DC"));
m_hdc = desc.hDc;
m_hbitmap = desc.hBitmap;
}
D3D11GDISurface::~D3D11GDISurface() {
if (m_readback)
m_readback->Release();
D3DKMT_DESTROYDCFROMMEMORY desc;
desc.hDC = m_hdc;
desc.hBitmap = m_hbitmap;
D3DKMTDestroyDCFromMemory(&desc);
}
HRESULT D3D11GDISurface::Acquire(BOOL Discard, HDC* phdc) {
if (!phdc)
return E_INVALIDARG;
*phdc = nullptr;
if (m_acquired)
return DXGI_ERROR_INVALID_CALL;
if (!Discard) {
// Create a staging resource that we can map
if (!m_readback && FAILED(CreateReadbackResource())) {
Logger::err("D3D11: Failed to create GDI readback resource");
return E_FAIL;
}
// Copy subresource to staging image
Com<ID3D11Device> device;
Com<ID3D11DeviceContext> context;
m_resource->GetDevice(&device);
device->GetImmediateContext(&context);
context->CopySubresourceRegion(m_readback, 0,
0, 0, 0, m_resource, m_subresource, nullptr);
// Copy staging image to DC memory
auto tex = GetCommonTexture(m_resource)->Desc();
auto rowData = reinterpret_cast<char*>(m_data.data());
auto rowLength = sizeof(uint32_t) * tex->Width;
D3D11_MAPPED_SUBRESOURCE sr;
context->Map(m_readback, 0, D3D11_MAP_READ, 0, &sr);
for (uint32_t i = 0; i < tex->Height; i++) {
std::memcpy(rowData + rowLength * i,
reinterpret_cast<const char*>(sr.pData) + sr.RowPitch * i,
rowLength);
}
context->Unmap(m_readback, 0);
}
m_acquired = true;
*phdc = m_hdc;
return S_OK;
}
HRESULT D3D11GDISurface::Release(const RECT* pDirtyRect) {
if (!m_acquired)
return DXGI_ERROR_INVALID_CALL;
Com<ID3D11Device> device;
Com<ID3D11DeviceContext> context;
m_resource->GetDevice(&device);
device->GetImmediateContext(&context);
// Commit changes made to the DC
auto tex = GetCommonTexture(m_resource)->Desc();
RECT rect;
if (pDirtyRect) {
rect.left = std::max<LONG>(pDirtyRect->left, 0);
rect.top = std::max<LONG>(pDirtyRect->top, 0);
rect.right = std::min<LONG>(pDirtyRect->right, tex->Width);
rect.bottom = std::min<LONG>(pDirtyRect->bottom, tex->Height);
} else {
rect.left = 0;
rect.top = 0;
rect.right = tex->Width;
rect.bottom = tex->Height;
}
if (rect.left < rect.right && rect.top < rect.bottom) {
D3D11_BOX box;
box.left = rect.left;
box.top = rect.top;
box.front = 0;
box.right = rect.right;
box.bottom = rect.bottom;
box.back = 1;
context->UpdateSubresource(m_resource, m_subresource,
&box, m_data.data() + rect.left,
sizeof(uint32_t) * tex->Width,
sizeof(uint32_t) * tex->Width * tex->Height);
}
m_acquired = false;
return S_OK;
}
HRESULT D3D11GDISurface::CreateReadbackResource() {
auto tex = GetCommonTexture(m_resource);
Com<ID3D11Device> device;
Com<ID3D11DeviceContext> context;
m_resource->GetDevice(&device);
device->GetImmediateContext(&context);
D3D11_RESOURCE_DIMENSION dim = { };
m_resource->GetType(&dim);
VkImageSubresource sr = tex->GetSubresourceFromIndex(
VK_IMAGE_ASPECT_COLOR_BIT, m_subresource);
switch (dim) {
case D3D11_RESOURCE_DIMENSION_TEXTURE1D: {
D3D11_TEXTURE1D_DESC desc;
desc.Width = std::max<UINT>(tex->Desc()->Width >> sr.mipLevel, 1);
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = tex->Desc()->Format;
desc.Usage = D3D11_USAGE_STAGING;
desc.BindFlags = 0;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.MiscFlags = 0;
ID3D11Texture1D* tex1D = nullptr;
HRESULT hr = device->CreateTexture1D(&desc, nullptr, &tex1D);
m_readback = tex1D;
return hr;
} break;
case D3D11_RESOURCE_DIMENSION_TEXTURE2D: {
D3D11_TEXTURE2D_DESC desc;
desc.Width = std::max<UINT>(tex->Desc()->Width >> sr.mipLevel, 1);
desc.Height = std::max<UINT>(tex->Desc()->Height >> sr.mipLevel, 1);
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = tex->Desc()->Format;
desc.SampleDesc= { 1, 0 };
desc.Usage = D3D11_USAGE_STAGING;
desc.BindFlags = 0;
desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ;
desc.MiscFlags = 0;
ID3D11Texture2D* tex2D = nullptr;
HRESULT hr = device->CreateTexture2D(&desc, nullptr, &tex2D);
m_readback = tex2D;
return hr;
} break;
default:
return E_INVALIDARG;
}
}
}
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