diff --git a/src/platform/windows/display_base.cpp b/src/platform/windows/display_base.cpp index 3d178daf..7058b77b 100644 --- a/src/platform/windows/display_base.cpp +++ b/src/platform/windows/display_base.cpp @@ -6,6 +6,7 @@ #include #include +#include #include // We have to include boost/process.hpp before display.h due to WinSock.h, @@ -351,6 +352,52 @@ namespace platf::dxgi { return true; } + bool + validate_and_test_gpu_preference(const std::string &display_name, bool verify_frame_capture) { + std::string cmd = "tools\\ddprobe.exe"; + + // We start at 1 because 0 is automatic selection which can be overridden by + // the GPU driver control panel options. Since ddprobe.exe can have different + // GPU driver overrides than Sunshine.exe, we want to avoid a scenario where + // autoselection might work for ddprobe.exe but not for us. + for (int i = 1; i < 5; i++) { + // Run the probe tool. It returns the status of DuplicateOutput(). + // + // Arg format: [GPU preference] [Display name] [--verify-frame-capture] + HRESULT result; + std::vector args = { std::to_string(i), display_name }; + try { + if (verify_frame_capture) { + args.emplace_back("--verify-frame-capture"); + } + result = bp::system(cmd, bp::args(args), bp::std_out > bp::null, bp::std_err > bp::null); + } + catch (bp::process_error &e) { + BOOST_LOG(error) << "Failed to start ddprobe.exe: "sv << e.what(); + return false; + } + + BOOST_LOG(info) << "ddprobe.exe " << boost::algorithm::join(args, " ") << " returned 0x" + << util::hex(result).to_string_view(); + + // E_ACCESSDENIED can happen at the login screen. If we get this error, + // we know capture would have been supported, because DXGI_ERROR_UNSUPPORTED + // would have been raised first if it wasn't. + if (result == S_OK || result == E_ACCESSDENIED) { + // We found a working GPU preference, so set ourselves to use that. + if (set_gpu_preference_on_self(i)) { + return true; + } + else { + return false; + } + } + } + + // If no valid configuration was found, return false + return false; + } + // On hybrid graphics systems, Windows will change the order of GPUs reported by // DXGI in accordance with the user's GPU preference. If the selected GPU is a // render-only device with no displays, DXGI will add virtual outputs to the @@ -363,53 +410,24 @@ namespace platf::dxgi { // we spawn a helper tool to probe for us before we set our own GPU preference. bool probe_for_gpu_preference(const std::string &display_name) { - // If we've already been through here, there's nothing to do this time. static bool set_gpu_preference = false; + + // If we've already been through here, there's nothing to do this time. if (set_gpu_preference) { return true; } - std::string cmd = "tools\\ddprobe.exe"; - - // We start at 1 because 0 is automatic selection which can be overridden by - // the GPU driver control panel options. Since ddprobe.exe can have different - // GPU driver overrides than Sunshine.exe, we want to avoid a scenario where - // autoselection might work for ddprobe.exe but not for us. - for (int i = 1; i < 5; i++) { - // Run the probe tool. It returns the status of DuplicateOutput(). - // - // Arg format: [GPU preference] [Display name] - HRESULT result; - try { - result = bp::system(cmd, std::to_string(i), display_name, bp::std_out > bp::null, bp::std_err > bp::null); - } - catch (bp::process_error &e) { - BOOST_LOG(error) << "Failed to start ddprobe.exe: "sv << e.what(); - return false; - } - - BOOST_LOG(info) << "ddprobe.exe ["sv << i << "] ["sv << display_name << "] returned: 0x"sv << util::hex(result).to_string_view(); - - // E_ACCESSDENIED can happen at the login screen. If we get this error, - // we know capture would have been supported, because DXGI_ERROR_UNSUPPORTED - // would have been raised first if it wasn't. - if (result == S_OK || result == E_ACCESSDENIED) { - // We found a working GPU preference, so set ourselves to use that. - if (set_gpu_preference_on_self(i)) { - set_gpu_preference = true; - return true; - } - else { - return false; - } - } - else { - // This configuration didn't work, so continue testing others - continue; - } + // Try probing with different GPU preferences and verify_frame_capture flag + if (validate_and_test_gpu_preference(display_name, true)) { + return true; } - // If none of the manual options worked, leave the GPU preference alone + // If no valid configuration was found, try again with verify_frame_capture == false + if (validate_and_test_gpu_preference(display_name, false)) { + return true; + } + + // If neither worked, return false return false; } diff --git a/tools/ddprobe.cpp b/tools/ddprobe.cpp index a30b2f41..3c2eb057 100644 --- a/tools/ddprobe.cpp +++ b/tools/ddprobe.cpp @@ -9,9 +9,11 @@ #include #include #include +#include #include "src/utility.h" +using Microsoft::WRL::ComPtr; using namespace std::literals; namespace dxgi { template @@ -69,8 +71,128 @@ syncThreadDesktop() { CloseDesktop(hDesk); } +/** + * @brief Determines if a given frame is valid by checking if it contains any non-dark pixels. + * + * This function analyzes the provided frame to determine if it contains any pixels that exceed a specified darkness threshold. + * It iterates over all pixels in the frame, comparing each pixel's RGB values to the defined darkness threshold. + * If any pixel's RGB values exceed this threshold, the function concludes that the frame is valid (i.e., not entirely dark) and returns `true`. + * If all pixels are below or equal to the threshold, indicating a completely dark frame, the function returns `false`. + + * @param mappedResource A reference to a `D3D11_MAPPED_SUBRESOURCE` structure containing the mapped subresource data of the frame to be analyzed. + * @param frameDesc A reference to a `D3D11_TEXTURE2D_DESC` structure describing the texture properties, including width and height. + * @param darknessThreshold A floating-point value representing the threshold above which a pixel's RGB values are considered dark. The value ranges from 0.0f to 1.0f, with a default value of 0.1f. + * @return Returns `true` if the frame contains any non-dark pixels, indicating it is valid; otherwise, returns `false`. + */ +bool +is_valid_frame(const D3D11_MAPPED_SUBRESOURCE &mappedResource, const D3D11_TEXTURE2D_DESC &frameDesc, float darknessThreshold = 0.1f) { + const auto *pixels = static_cast(mappedResource.pData); + const int bytesPerPixel = 4; // (8 bits per channel, excluding alpha). Factoring HDR is not needed because it doesn't cause black levels to raise enough to be a concern. + const int stride = mappedResource.RowPitch; + const int width = frameDesc.Width; + const int height = frameDesc.Height; + + // Convert the darkness threshold to an integer value for comparison + const auto threshold = static_cast(darknessThreshold * 255); + + // Iterate over each pixel in the frame + for (int y = 0; y < height; ++y) { + for (int x = 0; x < width; ++x) { + const uint8_t *pixel = pixels + y * stride + x * bytesPerPixel; + // Check if any RGB channel exceeds the darkness threshold + if (pixel[0] > threshold || pixel[1] > threshold || pixel[2] > threshold) { + // Frame is not dark + return true; + } + } + } + // Frame is entirely dark + return false; +} + +/** + * @brief Captures and verifies the contents of up to 10 consecutive frames from a DXGI output duplication. + * + * This function attempts to acquire and analyze up to 10 frames from a DXGI output duplication object (`dup`). + * It checks if each frame is non-empty (not entirely dark) by using the `is_valid_frame` function. + * If any non-empty frame is found, the function returns `S_OK`. + * If all 10 frames are empty, it returns `E_FAIL`, suggesting potential issues with the capture process. + * If any error occurs during the frame acquisition or analysis process, the corresponding `HRESULT` error code is returned. + * + * @param dup A reference to the DXGI output duplication object (`dxgi::dup_t&`) used to acquire frames. + * @param device A ComPtr to the ID3D11Device interface representing the device associated with the Direct3D context. + * @return Returns `S_OK` if a non-empty frame is captured successfully, `E_FAIL` if all frames are empty, or an error code if any failure occurs during the process. + */ HRESULT -test_dxgi_duplication(dxgi::adapter_t &adapter, dxgi::output_t &output) { +test_frame_capture(dxgi::dup_t &dup, ComPtr device) { + for (int i = 0; i < 10; ++i) { + std::cout << "Attempting to acquire frame " << (i + 1) << " of 10..." << std::endl; + ComPtr frameResource; + DXGI_OUTDUPL_FRAME_INFO frameInfo; + ComPtr context; + ComPtr stagingTexture; + + HRESULT status = dup->AcquireNextFrame(500, &frameInfo, &frameResource); + device->GetImmediateContext(&context); + + if (FAILED(status)) { + std::cout << "Error: Failed to acquire next frame [0x"sv << util::hex(status).to_string_view() << ']' << std::endl; + return status; + } + + auto cleanup = util::fail_guard([&dup]() { + dup->ReleaseFrame(); + }); + + std::cout << "Frame acquired successfully." << std::endl; + + ComPtr frameTexture; + status = frameResource->QueryInterface(IID_PPV_ARGS(&frameTexture)); + if (FAILED(status)) { + std::cout << "Error: Failed to query texture interface from frame resource [0x"sv << util::hex(status).to_string_view() << ']' << std::endl; + return status; + } + + D3D11_TEXTURE2D_DESC frameDesc; + frameTexture->GetDesc(&frameDesc); + frameDesc.Usage = D3D11_USAGE_STAGING; + frameDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ; + frameDesc.BindFlags = 0; + frameDesc.MiscFlags = 0; + + status = device->CreateTexture2D(&frameDesc, nullptr, &stagingTexture); + if (FAILED(status)) { + std::cout << "Error: Failed to create staging texture [0x"sv << util::hex(status).to_string_view() << ']' << std::endl; + return status; + } + + context->CopyResource(stagingTexture.Get(), frameTexture.Get()); + + D3D11_MAPPED_SUBRESOURCE mappedResource; + status = context->Map(stagingTexture.Get(), 0, D3D11_MAP_READ, 0, &mappedResource); + if (FAILED(status)) { + std::cout << "Error: Failed to map the staging texture for inspection [0x"sv << util::hex(status).to_string_view() << ']' << std::endl; + return status; + } + + auto contextCleanup = util::fail_guard([&context, &stagingTexture]() { + context->Unmap(stagingTexture.Get(), 0); + }); + + if (is_valid_frame(mappedResource, frameDesc)) { + std::cout << "Frame " << (i + 1) << " is non-empty (contains visible content)." << std::endl; + return S_OK; + } + + std::cout << "Frame " << (i + 1) << " is empty (no visible content)." << std::endl; + } + + // All frames were empty, indicating potential capture issues. + return E_FAIL; +} + +HRESULT +test_dxgi_duplication(dxgi::adapter_t &adapter, dxgi::output_t &output, bool verify_frame_capture) { D3D_FEATURE_LEVEL featureLevels[] { D3D_FEATURE_LEVEL_11_1, D3D_FEATURE_LEVEL_11_0, @@ -107,29 +229,60 @@ test_dxgi_duplication(dxgi::adapter_t &adapter, dxgi::output_t &output) { // Ensure we can duplicate the current display syncThreadDesktop(); - // Return the result of DuplicateOutput() to Sunshine + // Attempt to duplicate the output dxgi::dup_t dup; - return output1->DuplicateOutput((IUnknown *) device.get(), &dup); + ComPtr device_ptr(device.get()); + HRESULT result = output1->DuplicateOutput(device_ptr.Get(), &dup); + + if (FAILED(result)) { + std::cout << "Failed to duplicate output [0x"sv << util::hex(result).to_string_view() << "]" << std::endl; + return result; + } + + // To prevent false negatives, we'll make it optional to test for frame capture. + if (verify_frame_capture) { + HRESULT captureResult = test_frame_capture(dup, device_ptr.Get()); + if (FAILED(captureResult)) { + std::cout << "Frame capture test failed [0x"sv << util::hex(captureResult).to_string_view() << "]" << std::endl; + return captureResult; + } + } + + return S_OK; } int main(int argc, char *argv[]) { HRESULT status; - // Display name may be omitted - if (argc != 2 && argc != 3) { - std::cout << "ddprobe.exe [GPU preference value] [display name]"sv << std::endl; + // Usage message + if (argc < 2 || argc > 4) { + std::cout << "Usage: ddprobe.exe [GPU preference value] [display name] [--verify-frame-capture]"sv << std::endl; return -1; } std::wstring display_name; - if (argc == 3) { - std::wstring_convert, wchar_t> converter; - display_name = converter.from_bytes(argv[2]); + bool verify_frame_capture = false; + + // Parse GPU preference value (required) + int gpu_preference = atoi(argv[1]); + + // Parse optional arguments + for (int i = 2; i < argc; ++i) { + std::string arg = argv[i]; + + if (arg == "--verify-frame-capture") { + verify_frame_capture = true; + } + else { + // Assume any other argument is the display name + std::wstring_convert, wchar_t> converter; + display_name = converter.from_bytes(arg); + } } // We must set the GPU preference before making any DXGI/D3D calls - status = set_gpu_preference(atoi(argv[1])); + status = set_gpu_preference(gpu_preference); if (status != ERROR_SUCCESS) { return status; } @@ -173,7 +326,7 @@ main(int argc, char *argv[]) { } // We found the matching output. Test it and return the result. - return test_dxgi_duplication(adapter, output); + return test_dxgi_duplication(adapter, output, verify_frame_capture); } }