Magic_Game/core/Base/Renderer.cpp

#include "..\e2dbase.h"
#include "..\e2dmanager.h"
#include "..\e2dnode.h"


e2d::Renderer*		e2d::Renderer::_instance = nullptr;
ID2D1Factory*		e2d::Renderer::_d2dFactory = nullptr;
IWICImagingFactory*	e2d::Renderer::_imagingFactory = nullptr;
IDWriteFactory*		e2d::Renderer::_writeFactory = nullptr;
ID2D1StrokeStyle*	e2d::Renderer::_miterStrokeStyle = nullptr;
ID2D1StrokeStyle*	e2d::Renderer::_bevelStrokeStyle = nullptr;
ID2D1StrokeStyle*	e2d::Renderer::_roundStrokeStyle = nullptr;

e2d::Renderer * e2d::Renderer::getInstance()
{
	if (!_instance)
	{
		_instance = new (std::nothrow) Renderer;
	}
	return _instance;
}

void e2d::Renderer::destroyInstance()
{
	if (_instance)
	{
		delete _instance;
		_instance = nullptr;

		SafeRelease(_miterStrokeStyle);
		SafeRelease(_bevelStrokeStyle);
		SafeRelease(_roundStrokeStyle);
		SafeRelease(_d2dFactory);
		SafeRelease(_imagingFactory);
		SafeRelease(_writeFactory);
	}
}

e2d::Renderer::Renderer()
	: _lastRenderTime(0)
	, _fpsFormat(nullptr)
	, _renderTarget(nullptr)
	, _solidBrush(nullptr)
	, _textRenderer(nullptr)
	, _clearColor(D2D1::ColorF(D2D1::ColorF::Black))
{
	CoInitialize(nullptr);

	this->__createDeviceResources();
}

e2d::Renderer::~Renderer()
{
	SafeRelease(_fpsFormat);
	SafeRelease(_textRenderer);
	SafeRelease(_solidBrush);
	SafeRelease(_renderTarget);

	CoUninitialize();
}

bool e2d::Renderer::__createDeviceResources()
{
	HRESULT hr = S_OK;

	if (!_renderTarget)
	{
		HWND hWnd = Window::getInstance()->getHWnd();

		// <20><><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><E8B1B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD>Щ<EFBFBD><D0A9>ԴӦ<D4B4><D3A6> Direct3D <20>豸<EFBFBD><E8B1B8>ʧʱ<CAA7>ؽ<EFBFBD>
		RECT rc;
		GetClientRect(hWnd, &rc);

		D2D1_SIZE_U size = D2D1::SizeU(
			rc.right - rc.left,
			rc.bottom - rc.top
		);

		// <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> Direct2D <20><>ȾĿ<C8BE><C4BF>
		hr = Renderer::getFactory()->CreateHwndRenderTarget(
			D2D1::RenderTargetProperties(),
			D2D1::HwndRenderTargetProperties(hWnd, size, D2D1_PRESENT_OPTIONS_IMMEDIATELY),
			&_renderTarget
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create ID2D1HwndRenderTarget failed");
		}
		else
		{
			// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ˢ
			hr = _renderTarget->CreateSolidColorBrush(
				D2D1::ColorF(D2D1::ColorF::White),
				&_solidBrush
			);
		}

		if (FAILED(hr))
		{
			throw SystemException(L"Create ID2D1SolidColorBrush failed");
		}
	}

	return SUCCEEDED(hr);
}

void e2d::Renderer::__discardDeviceResources()
{
	SafeRelease(_renderTarget);
	SafeRelease(_solidBrush);
	SafeRelease(_textRenderer);
}

void e2d::Renderer::render()
{
	HRESULT hr = S_OK;

	// <20><><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><E8B1B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ
	Renderer::__createDeviceResources();

	// <20><>ʼ<EFBFBD><CABC>Ⱦ
	_renderTarget->BeginDraw();
	// ʹ<>ñ<EFBFBD><C3B1><EFBFBD>ɫ<EFBFBD><C9AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ
	_renderTarget->Clear(_clearColor);

	// <20><>Ⱦ<EFBFBD><C8BE><EFBFBD><EFBFBD>
	SceneManager::getInstance()->render();

	// <20><>Ⱦ FPS
	if (Game::getInstance()->getConfig().isFpsShow())
	{
		_renderFps();
	}

	// <20><>ֹ<EFBFBD><D6B9>Ⱦ
	hr = _renderTarget->EndDraw();

	if (hr == D2DERR_RECREATE_TARGET)
	{
		// <20><><EFBFBD><EFBFBD> Direct3D <20>豸<EFBFBD><E8B1B8>ִ<EFBFBD>й<EFBFBD><D0B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD>豸<EFBFBD><E8B1B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ
		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>ε<EFBFBD><CEB5><EFBFBD>ʱ<EFBFBD>ؽ<EFBFBD><D8BD><EFBFBD>Դ
		hr = S_OK;
		this->__discardDeviceResources();
	}

	if (FAILED(hr))
	{
		throw SystemException(L"Device loss recovery failed");
	}
}

void e2d::Renderer::_renderFps()
{
	double duration = Game::getInstance()->getTotalDuration().seconds();
	if (duration == _lastRenderTime)
		return;

	String fpsText = String::format(L"FPS: %.1lf", (1.0 / (duration - _lastRenderTime)));
	_lastRenderTime = duration;

	auto writeFactory = Renderer::getWriteFactory();
	if (!_fpsFormat)
	{
		HRESULT hr = writeFactory->CreateTextFormat(
			L"",
			nullptr,
			DWRITE_FONT_WEIGHT_NORMAL,
			DWRITE_FONT_STYLE_NORMAL,
			DWRITE_FONT_STRETCH_NORMAL,
			20,
			L"",
			&_fpsFormat
		);

		if (SUCCEEDED(hr))
		{
			_fpsFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
		}
		else
		{
			return;
		}
	}

	IDWriteTextLayout * fpsLayout = nullptr;
	HRESULT hr = writeFactory->CreateTextLayout(
		(const WCHAR *)fpsText,
		(UINT32)fpsText.getLength(),
		_fpsFormat,
		0,
		0,
		&fpsLayout
	);

	if (SUCCEEDED(hr))
	{
		_renderTarget->SetTransform(D2D1::Matrix3x2F::Identity());
		_solidBrush->SetOpacity(1.0f);

		auto textRenderer = this->getTextRenderer();
		textRenderer->SetTextStyle(
			D2D1::ColorF(D2D1::ColorF::White),
			TRUE,
			D2D1::ColorF(D2D1::ColorF::Black, 0.4f),
			1.5f,
			D2D1_LINE_JOIN_ROUND
		);

		fpsLayout->Draw(nullptr, textRenderer, 10, 0);
	}

	SafeRelease(fpsLayout);
}

e2d::Color e2d::Renderer::getBackgroundColor()
{
	return Color(_clearColor.r, _clearColor.g, _clearColor.b, _clearColor.a);
}

void e2d::Renderer::setBackgroundColor(Color color)
{
	_clearColor = color.toD2DColorF();
}

ID2D1HwndRenderTarget * e2d::Renderer::getRenderTarget()
{
	return _renderTarget;
}

ID2D1SolidColorBrush * e2d::Renderer::getSolidColorBrush()
{
	return _solidBrush;
}

e2d::TextRenderer * e2d::Renderer::getTextRenderer()
{
	if (!_textRenderer)
	{
		// <20><><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ⱦ<EFBFBD><C8BE>
		HRESULT hr = TextRenderer::Create(
			&_textRenderer,
			Renderer::getFactory(),
			this->getRenderTarget(),
			this->getSolidColorBrush()
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create TextRenderer failed");
		}
	}
	return _textRenderer;
}

ID2D1Factory * e2d::Renderer::getFactory()
{
	if (!_d2dFactory)
	{
		HRESULT hr = D2D1CreateFactory(
			D2D1_FACTORY_TYPE_SINGLE_THREADED,
			&_d2dFactory
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create ID2D1Factory failed");
		}
	}
	return _d2dFactory;
}

IWICImagingFactory * e2d::Renderer::getImagingFactory()
{
	if (!_imagingFactory)
	{
		// <20><><EFBFBD><EFBFBD> WIC <20><>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͳһ<CDB3><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>ʽ<EFBFBD><CABD>ͼƬ
		HRESULT hr = CoCreateInstance(
			CLSID_WICImagingFactory,
			nullptr,
			CLSCTX_INPROC_SERVER,
			IID_IWICImagingFactory,
			reinterpret_cast<void**>(&_imagingFactory)
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create IWICImagingFactory failed");
		}
	}
	return _imagingFactory;
}

IDWriteFactory * e2d::Renderer::getWriteFactory()
{
	if (!_writeFactory)
	{
		// <20><><EFBFBD><EFBFBD> DirectWrite <20><><EFBFBD><EFBFBD>
		HRESULT hr = DWriteCreateFactory(
			DWRITE_FACTORY_TYPE_SHARED,
			__uuidof(IDWriteFactory),
			reinterpret_cast<IUnknown**>(&_writeFactory)
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create IDWriteFactory failed");
		}
	}
	return _writeFactory;
}

ID2D1StrokeStyle * e2d::Renderer::getMiterStrokeStyle()
{
	if (!_miterStrokeStyle)
	{
		HRESULT hr = Renderer::getFactory()->CreateStrokeStyle(
			D2D1::StrokeStyleProperties(
				D2D1_CAP_STYLE_FLAT,
				D2D1_CAP_STYLE_FLAT,
				D2D1_CAP_STYLE_FLAT,
				D2D1_LINE_JOIN_MITER,
				2.0f,
				D2D1_DASH_STYLE_SOLID,
				0.0f),
			nullptr,
			0,
			&_miterStrokeStyle
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create ID2D1StrokeStyle failed");
		}
	}
	return _miterStrokeStyle;
}

ID2D1StrokeStyle * e2d::Renderer::getBevelStrokeStyle()
{
	if (!_bevelStrokeStyle)
	{
		HRESULT hr = Renderer::getFactory()->CreateStrokeStyle(
			D2D1::StrokeStyleProperties(
				D2D1_CAP_STYLE_FLAT,
				D2D1_CAP_STYLE_FLAT,
				D2D1_CAP_STYLE_FLAT,
				D2D1_LINE_JOIN_BEVEL,
				2.0f,
				D2D1_DASH_STYLE_SOLID,
				0.0f),
			nullptr,
			0,
			&_bevelStrokeStyle
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create ID2D1StrokeStyle failed");
		}
	}
	return _bevelStrokeStyle;
}

ID2D1StrokeStyle * e2d::Renderer::getRoundStrokeStyle()
{
	if (!_roundStrokeStyle)
	{
		HRESULT hr = Renderer::getFactory()->CreateStrokeStyle(
			D2D1::StrokeStyleProperties(
				D2D1_CAP_STYLE_FLAT,
				D2D1_CAP_STYLE_FLAT,
				D2D1_CAP_STYLE_FLAT,
				D2D1_LINE_JOIN_ROUND,
				2.0f,
				D2D1_DASH_STYLE_SOLID,
				0.0f),
			nullptr,
			0,
			&_roundStrokeStyle
		);

		if (FAILED(hr))
		{
			throw SystemException(L"Create ID2D1StrokeStyle failed");
		}
	}
	return _roundStrokeStyle;
}