From 15740faf9fe9fe4be08965098bbf2947e096aeeb Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Wed, 14 Aug 2019 22:50:43 +0800
Subject: +Unity Runtime code

---
 Runtime/GfxDevice/d3d/D3D9Enumeration.cpp | 344 ++++++++++++++++++++++++++++++
 1 file changed, 344 insertions(+)
 create mode 100644 Runtime/GfxDevice/d3d/D3D9Enumeration.cpp

(limited to 'Runtime/GfxDevice/d3d/D3D9Enumeration.cpp')

diff --git a/Runtime/GfxDevice/d3d/D3D9Enumeration.cpp b/Runtime/GfxDevice/d3d/D3D9Enumeration.cpp
new file mode 100644
index 0000000..b78433e
--- /dev/null
+++ b/Runtime/GfxDevice/d3d/D3D9Enumeration.cpp
@@ -0,0 +1,344 @@
+#include "UnityPrefix.h"
+#include "D3D9Enumeration.h"
+#include "D3D9Utils.h"
+#include "Runtime/GfxDevice/VramLimits.h"
+
+// ---------------------------------------------------------------------------
+
+
+const int kMinDisplayWidth = 512;
+const int kMinDisplayHeight = 384;
+const int kMinColorBits = 4;
+const int kMinAlphaBits = 0;
+
+extern D3DDEVTYPE g_D3DDevType;
+extern DWORD g_D3DAdapter;
+
+// ---------------------------------------------------------------------------
+
+static int GetFormatColorBits( D3DFORMAT fmt ) {
+	switch( fmt ) {
+	case D3DFMT_A2B10G10R10:
+	case D3DFMT_A2R10G10B10:	return 10;
+	case D3DFMT_R8G8B8:
+	case D3DFMT_A8R8G8B8:
+	case D3DFMT_X8R8G8B8:		return 8;
+	case D3DFMT_R5G6B5:
+	case D3DFMT_X1R5G5B5:
+	case D3DFMT_A1R5G5B5:		return 5;
+	case D3DFMT_A4R4G4B4:
+	case D3DFMT_X4R4G4B4:		return 4;
+	case D3DFMT_R3G3B2:
+	case D3DFMT_A8R3G3B2:		return 2;
+	default:					return 0;
+	}
+}
+
+static int GetFormatAlphaBits( D3DFORMAT fmt ) {
+	switch( fmt ) {
+	case D3DFMT_R8G8B8:
+	case D3DFMT_X8R8G8B8:
+	case D3DFMT_R5G6B5:
+	case D3DFMT_X1R5G5B5:
+	case D3DFMT_R3G3B2:
+	case D3DFMT_X4R4G4B4:		return 0;
+	case D3DFMT_A8R8G8B8:
+	case D3DFMT_A8R3G3B2:		return 8;
+	case D3DFMT_A1R5G5B5:		return 1;
+	case D3DFMT_A4R4G4B4:		return 4;
+	case D3DFMT_A2B10G10R10:
+	case D3DFMT_A2R10G10B10:	return 2;
+	default:					return 0;
+	}
+}
+
+int GetFormatDepthBits( D3DFORMAT fmt ) {
+	switch( fmt ) {
+	case D3DFMT_D16:		return 16;
+	case D3DFMT_D15S1:		return 15;
+	case D3DFMT_D24X8:
+	case D3DFMT_D24S8:
+	case D3DFMT_D24X4S4:	return 24;
+	case D3DFMT_D32:		return 32;
+	default:				return 0;
+	}
+}
+
+static D3DFORMAT ConvertToAlphaFormat( D3DFORMAT fmt )
+{
+	if( fmt == D3DFMT_X8R8G8B8 )
+		fmt = D3DFMT_A8R8G8B8;
+	else if( fmt == D3DFMT_X4R4G4B4 )
+		fmt = D3DFMT_A4R4G4B4;
+	else if( fmt == D3DFMT_X1R5G5B5 )
+		fmt = D3DFMT_A1R5G5B5;
+	return fmt;
+}
+
+// -----------------------------------------------------------------------------
+
+
+static UInt32 buildVertexProcessings( const D3DCAPS9& caps )
+{
+	UInt32 result =  0;
+
+	// TODO: check vertex shader version
+
+	DWORD devCaps = caps.DevCaps;
+	if( devCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT ) {
+		if( devCaps & D3DDEVCAPS_PUREDEVICE ) {
+			result |= (1<<kVPPureHardware);
+		}
+		result |= (1<<kVPHardware);
+		result |= (1<<kVPMixed);
+	}
+
+	result |= (1<<kVPSoftware);
+
+	return result;
+}
+
+
+static void buildDepthStencilFormats( IDirect3D9& d3d, D3DDeviceCombo& devCombo )
+{
+	const D3DFORMAT dsFormats[] = {
+		D3DFMT_D24S8, D3DFMT_D24X8, D3DFMT_D24X4S4, D3DFMT_D16, D3DFMT_D15S1, D3DFMT_D32,
+	};
+	const int dsFormatCount = sizeof(dsFormats) / sizeof(dsFormats[0]);
+	
+	for( int idsf = 0; idsf < dsFormatCount; ++idsf ) {
+		D3DFORMAT format = dsFormats[idsf];
+		if( SUCCEEDED( d3d.CheckDeviceFormat( g_D3DAdapter, g_D3DDevType, devCombo.adapterFormat, D3DUSAGE_DEPTHSTENCIL, D3DRTYPE_SURFACE, format ) ) )
+		{
+			if( SUCCEEDED( d3d.CheckDepthStencilMatch( g_D3DAdapter, g_D3DDevType, devCombo.adapterFormat, devCombo.backBufferFormat, format ) ) )
+			{
+				devCombo.depthStencilFormats.push_back( format );
+			}
+		}
+	}
+}
+
+
+static void buildMultiSampleTypes( IDirect3D9& d3d, D3DDeviceCombo& devCombo )
+{
+	const size_t kMaxSamples = 16;
+	devCombo.multiSampleTypes.reserve( kMaxSamples );
+	devCombo.multiSampleTypes.push_back( D3DMULTISAMPLE_NONE );
+
+	for( int samples = 2; samples <= kMaxSamples; ++samples ) {
+		D3DMULTISAMPLE_TYPE	msType = GetD3DMultiSampleType( samples );
+		DWORD msQuality;
+		if( SUCCEEDED( d3d.CheckDeviceMultiSampleType( g_D3DAdapter, g_D3DDevType, devCombo.backBufferFormat, devCombo.isWindowed, msType, NULL ) ) )
+			devCombo.multiSampleTypes.push_back( samples );
+	}
+}
+
+
+static void buildConflicts( IDirect3D9& d3d, D3DDeviceCombo& devCombo )
+{
+	for( size_t ids = 0; ids < devCombo.depthStencilFormats.size(); ++ids ) {
+		D3DFORMAT format = (D3DFORMAT)devCombo.depthStencilFormats[ids];
+		for( size_t ims = 0; ims < devCombo.multiSampleTypes.size(); ++ims ) {
+			D3DMULTISAMPLE_TYPE msType = (D3DMULTISAMPLE_TYPE)devCombo.multiSampleTypes[ims];
+			if( FAILED( d3d.CheckDeviceMultiSampleType(
+				g_D3DAdapter, g_D3DDevType,
+				format, devCombo.isWindowed, msType, NULL ) ) )
+			{
+				D3DDeviceCombo::MultiSampleConflict conflict;
+				conflict.format = format;
+				conflict.type = msType;
+				devCombo.conflicts.push_back( conflict );
+			}
+		}
+	}
+}
+
+
+static bool enumerateDeviceCombos( IDirect3D9& d3d, const D3DCAPS9& caps, const DwordVector& adapterFormats, D3DDeviceComboVector& outCombos )
+{
+	const D3DFORMAT bbufferFormats[] = {
+		D3DFMT_A8R8G8B8, D3DFMT_X8R8G8B8, D3DFMT_A2R10G10B10,
+		D3DFMT_R5G6B5, D3DFMT_A1R5G5B5, D3DFMT_X1R5G5B5
+	};
+	const int bbufferFormatCount = sizeof(bbufferFormats) / sizeof(bbufferFormats[0]);
+
+	bool isWindowedArray[] = { false, true };
+
+	// see which adapter formats are supported by this device
+	for( size_t iaf = 0; iaf < adapterFormats.size(); ++iaf )
+	{
+		D3DFORMAT format = (D3DFORMAT)adapterFormats[iaf];
+		for( int ibbf = 0; ibbf < bbufferFormatCount; ibbf++ )
+		{
+			D3DFORMAT bbufferFormat = bbufferFormats[ibbf];
+			if( GetFormatAlphaBits(bbufferFormat) < kMinAlphaBits )
+				continue;
+			for( int iiw = 0; iiw < 2; ++iiw ) {
+				bool isWindowed = isWindowedArray[iiw];
+				if( FAILED( d3d.CheckDeviceType( g_D3DAdapter, g_D3DDevType, format, bbufferFormat, isWindowed ) ) )
+					continue;
+
+				// Here, we have an adapter format / backbuffer format/ windowed
+				// combo that is supported by the system. We still need to find one or
+				// more suitable depth/stencil buffer format, multisample type,
+				// vertex processing type, and vsync.
+				D3DDeviceCombo devCombo;
+
+				devCombo.adapterFormat = format;
+				devCombo.backBufferFormat = bbufferFormat;
+				devCombo.isWindowed = isWindowed;
+				devCombo.presentationIntervals = caps.PresentationIntervals;
+
+				buildDepthStencilFormats( d3d, devCombo );
+				if( devCombo.depthStencilFormats.empty() )
+					continue;
+
+				buildMultiSampleTypes( d3d, devCombo );
+				if( devCombo.multiSampleTypes.empty() )
+					continue;
+
+				buildConflicts( d3d, devCombo );
+
+				outCombos.push_back( devCombo );
+			}
+		}
+	}
+
+	return !outCombos.empty();
+}
+
+
+bool D3D9FormatCaps::Enumerate( IDirect3D9& d3d )
+{
+	AssertIf( !m_Combos.empty() );
+	HRESULT hr;
+
+	const D3DFORMAT allowedFormats[] = {
+		D3DFMT_X8R8G8B8, D3DFMT_X1R5G5B5, D3DFMT_R5G6B5, D3DFMT_A2R10G10B10
+	};
+	const int allowedFormatCount = sizeof(allowedFormats) / sizeof(allowedFormats[0]);
+
+	m_AdapterFormatForChecks = D3DFMT_UNKNOWN;
+
+	// build a list of all display adapter formats
+	DwordVector adapterFormatList; // D3DFORMAT
+
+	for( size_t ifmt = 0; ifmt < allowedFormatCount; ++ifmt )
+	{
+		D3DFORMAT format = allowedFormats[ifmt];
+		int modeCount = d3d.GetAdapterModeCount( g_D3DAdapter, format );
+		for( int mode = 0; mode < modeCount; ++mode ) {
+			D3DDISPLAYMODE dm;
+			d3d.EnumAdapterModes( g_D3DAdapter, format, mode, &dm );
+			if( dm.Width < (UINT)kMinDisplayWidth || dm.Height < (UINT)kMinDisplayHeight || GetFormatColorBits(dm.Format) < kMinColorBits )
+				continue;
+			// adapterInfo->displayModes.push_back( dm );
+			if( std::find(adapterFormatList.begin(),adapterFormatList.end(),dm.Format) == adapterFormatList.end() ) {
+				adapterFormatList.push_back( dm.Format );
+				if( m_AdapterFormatForChecks == D3DFMT_UNKNOWN )
+					m_AdapterFormatForChecks = format;
+			}
+		}
+	}
+
+	if( m_AdapterFormatForChecks == D3DFMT_UNKNOWN ) // for some reason no format was selected for checks, use default
+		m_AdapterFormatForChecks = allowedFormats[0];
+
+	// get info for device on this adapter
+	D3DCAPS9 caps;
+	if( FAILED( d3d.GetDeviceCaps( g_D3DAdapter, g_D3DDevType, &caps ) ) )
+		return false;
+
+	// find suitable vertex processing modes (if any)
+	m_VertexProcessings = buildVertexProcessings( caps );
+	AssertIf( !m_VertexProcessings );
+
+	// get info for each device combo on this device
+	if( !enumerateDeviceCombos( d3d, caps, adapterFormatList, m_Combos ) )
+		return false;
+
+	return true;
+}
+
+
+void D3D9FormatCaps::FindBestPresentationParams( int width, int height, D3DFORMAT desktopMode, bool windowed, int vBlankCount, int multiSample, D3DPRESENT_PARAMETERS& outParams ) const
+{
+	const D3DDeviceCombo* bestCombo = NULL;
+	int bestScore = -1;
+
+	for( size_t idc = 0; idc < m_Combos.size(); ++idc )
+	{
+		const D3DDeviceCombo& devCombo = m_Combos[idc];
+		if( windowed && !devCombo.isWindowed )
+			continue;
+		if( !windowed && devCombo.isWindowed )
+			continue;
+		if( windowed )
+		{
+			if( devCombo.adapterFormat != desktopMode )
+				continue;
+		}
+
+		int score = 0;
+
+		bool matchesBB = (devCombo.backBufferFormat == ConvertToAlphaFormat(devCombo.adapterFormat));
+		bool matchesDesktop = (devCombo.adapterFormat == desktopMode);
+
+		if( matchesBB )
+			score += 1;
+		if( matchesDesktop )
+			score += 1;
+		if( GetFormatAlphaBits(devCombo.backBufferFormat) > 0 )
+			score += 1;
+
+		if( score > bestScore )
+		{
+			bestScore = score;
+			bestCombo = &devCombo;
+		}
+	}
+
+	if( !bestCombo )
+	{
+		// This can happen if we're debugging force-16BPP modes on a 32BPP desktop, and so on
+		outParams.BackBufferFormat = desktopMode;
+		outParams.AutoDepthStencilFormat = D3DFMT_D16;
+		outParams.PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT;
+		outParams.MultiSampleType = D3DMULTISAMPLE_NONE;
+		outParams.MultiSampleQuality = 0;
+		return;
+	}
+
+	outParams.BackBufferFormat = bestCombo->backBufferFormat;
+	outParams.AutoDepthStencilFormat = (D3DFORMAT)bestCombo->depthStencilFormats[0];
+
+	// No support for intervals above 1 in windowed mode (case 497116)
+	if (windowed && vBlankCount > 1)
+		vBlankCount = 1;
+
+	// best possible vsync parameter (if device doesn't support 2 fall back to 1)
+	DWORD intervals = bestCombo->presentationIntervals;
+	outParams.PresentationInterval = ( vBlankCount >= 2 ) && ( intervals & D3DPRESENT_INTERVAL_TWO ) ? D3DPRESENT_INTERVAL_TWO :
+									 ( vBlankCount >= 1 ) && ( intervals & D3DPRESENT_INTERVAL_ONE ) ? D3DPRESENT_INTERVAL_ONE :
+									 ( vBlankCount == 0 ) && ( intervals & D3DPRESENT_INTERVAL_IMMEDIATE ) ? D3DPRESENT_INTERVAL_IMMEDIATE :
+									 D3DPRESENT_INTERVAL_DEFAULT;
+
+	// Here we already know backbuffer, depth buffer formats and so on, so we can also clamp used FSAA to sane VRAM limits.
+	int backbufferBPP = GetBPPFromD3DFormat(outParams.BackBufferFormat)/8;
+	int frontbufferBPP = GetBPPFromD3DFormat(desktopMode)/8;
+	int depthBPP = GetBPPFromD3DFormat(outParams.AutoDepthStencilFormat)/8;
+	multiSample = ChooseSuitableFSAALevel( width, height, backbufferBPP, frontbufferBPP, depthBPP, multiSample );
+
+	// Find out best matched multi sample type.
+	int msIdx = 0;
+	if( multiSample > 1 )
+	{
+		while( msIdx < bestCombo->multiSampleTypes.size() && bestCombo->multiSampleTypes[msIdx] <= multiSample )
+			++msIdx;
+		--msIdx;
+		AssertIf( msIdx < 0 );
+	}
+	outParams.MultiSampleType = GetD3DMultiSampleType(bestCombo->multiSampleTypes[msIdx]);
+	outParams.MultiSampleQuality = 0;
+}
+
-- 
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