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game/client/portal/portal_render_targets.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Portal mod render targets are specified by and accessable through this singleton
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "portal_render_targets.h"
+#include "materialsystem/imaterialsystem.h"
+#include "rendertexture.h"
+
+//-----------------------------------------------------------------------------
+// Purpose: Called in CClientRenderTargets::InitClientRenderTargets, used to set
+//			the CTextureReference member
+// Input  : pMaterialSystem - material system passed in from the engine
+// Output : ITexture* - the created texture
+//-----------------------------------------------------------------------------
+ITexture* CPortalRenderTargets::InitPortal1Texture( IMaterialSystem* pMaterialSystem )
+{
+	if ( IsX360() )
+	{
+		// shouldn't be using
+		Assert( 0 );
+		return NULL;
+	}
+
+	return pMaterialSystem->CreateNamedRenderTargetTextureEx2(
+		"_rt_Portal1",
+		1, 1, RT_SIZE_FULL_FRAME_BUFFER,
+		pMaterialSystem->GetBackBufferFormat(),
+		MATERIAL_RT_DEPTH_SHARED, 
+		0,
+		CREATERENDERTARGETFLAGS_HDR );
+}
+
+ITexture* CPortalRenderTargets::GetPortal1Texture()
+{
+	return m_Portal1Texture;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Called in CClientRenderTargets::InitClientRenderTargets, used to set
+//			the CTextureReference member
+// Input  : pMaterialSystem - material system passed in from the engine
+// Output : ITexture* - the created texture
+//-----------------------------------------------------------------------------
+ITexture* CPortalRenderTargets::InitPortal2Texture( IMaterialSystem* pMaterialSystem )
+{
+	if ( IsX360() )
+	{
+		// shouldn't be using
+		Assert( 0 );
+		return NULL;
+	}
+
+	return pMaterialSystem->CreateNamedRenderTargetTextureEx2(
+		"_rt_Portal2",
+		1, 1, RT_SIZE_FULL_FRAME_BUFFER,
+		pMaterialSystem->GetBackBufferFormat(),
+		MATERIAL_RT_DEPTH_SHARED, 
+		0,
+		CREATERENDERTARGETFLAGS_HDR );
+}
+
+ITexture* CPortalRenderTargets::GetPortal2Texture()
+{
+	return m_Portal2Texture;
+} 
+
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Called in CClientRenderTargets::InitClientRenderTargets, used to set
+//			the CTextureReference member
+// Input  : pMaterialSystem - material system passed in from the engine
+// Output : ITexture* - the created texture
+//-----------------------------------------------------------------------------
+ITexture* CPortalRenderTargets::InitDepthDoublerTexture( IMaterialSystem* pMaterialSystem )
+{
+	return pMaterialSystem->CreateNamedRenderTargetTextureEx2(
+		"_rt_DepthDoubler",
+		512, 512, RT_SIZE_DEFAULT,
+		pMaterialSystem->GetBackBufferFormat(),
+		MATERIAL_RT_DEPTH_SHARED, 
+		0,
+		CREATERENDERTARGETFLAGS_HDR );
+}
+
+ITexture* CPortalRenderTargets::GetDepthDoublerTexture()
+{
+	return m_DepthDoublerTexture;
+}
+
+
+void CPortalRenderTargets::InitPortalWaterTextures( IMaterialSystem* pMaterialSystem )
+{
+	if ( IsX360() )
+	{
+		return;
+	}
+
+	//Reflections
+	m_WaterReflectionTextures[0].Init( 
+		pMaterialSystem->CreateNamedRenderTargetTextureEx2(
+			"_rt_PortalWaterReflection_Depth1",
+			512, 512, RT_SIZE_PICMIP,
+			pMaterialSystem->GetBackBufferFormat(), 
+			MATERIAL_RT_DEPTH_SEPARATE, 
+			TEXTUREFLAGS_CLAMPS | TEXTUREFLAGS_CLAMPT,
+			CREATERENDERTARGETFLAGS_HDR ) );
+
+	m_WaterReflectionTextures[1].Init( 
+		pMaterialSystem->CreateNamedRenderTargetTextureEx2(
+			"_rt_PortalWaterReflection_Depth2",
+			256, 256, RT_SIZE_PICMIP,
+			pMaterialSystem->GetBackBufferFormat(), 
+			MATERIAL_RT_DEPTH_SEPARATE,
+			TEXTUREFLAGS_CLAMPS | TEXTUREFLAGS_CLAMPT,
+			CREATERENDERTARGETFLAGS_HDR ) );
+
+
+	//Refractions
+	m_WaterRefractionTextures[0].Init( 
+		pMaterialSystem->CreateNamedRenderTargetTextureEx2(
+			"_rt_PortalWaterRefraction_Depth1",
+			512, 512, RT_SIZE_PICMIP,
+			// This is different than reflection because it has to have alpha for fog factor.
+			IMAGE_FORMAT_RGBA8888, 
+			MATERIAL_RT_DEPTH_SEPARATE,
+			TEXTUREFLAGS_CLAMPS | TEXTUREFLAGS_CLAMPT,
+			CREATERENDERTARGETFLAGS_HDR ) );
+
+	m_WaterRefractionTextures[1].Init( 
+		pMaterialSystem->CreateNamedRenderTargetTextureEx2(
+			"_rt_PortalWaterRefraction_Depth2",
+			256, 256, RT_SIZE_PICMIP,
+			// This is different than reflection because it has to have alpha for fog factor.
+			IMAGE_FORMAT_RGBA8888, 
+			MATERIAL_RT_DEPTH_SEPARATE,
+			TEXTUREFLAGS_CLAMPS | TEXTUREFLAGS_CLAMPT,
+			CREATERENDERTARGETFLAGS_HDR ) );
+}
+
+ITexture* CPortalRenderTargets::GetWaterReflectionTextureForStencilDepth( int iStencilDepth )
+{
+	if ( IsX360() )
+	{
+		return NULL;
+	}
+
+	if ( iStencilDepth > 2 )
+		return NULL;
+
+	if ( iStencilDepth == 0 )
+		return m_WaterReflectionTexture; //from CBaseClientRenderTargets
+
+	return m_WaterReflectionTextures[ iStencilDepth - 1 ];
+}
+
+ITexture* CPortalRenderTargets::GetWaterRefractionTextureForStencilDepth( int iStencilDepth )
+{
+	if ( IsX360() )
+	{
+		return NULL;
+	}
+
+	if ( iStencilDepth > 2 )
+		return NULL;
+
+	if ( iStencilDepth == 0 )
+		return m_WaterRefractionTexture; //from CBaseClientRenderTargets
+
+	return m_WaterRefractionTextures[ iStencilDepth - 1 ];
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: InitClientRenderTargets, interface called by the engine at material system init in the engine
+// Input  : pMaterialSystem - the interface to the material system from the engine (our singleton hasn't been set up yet)
+//			pHardwareConfig - the user's hardware config, useful for conditional render targets setup
+//-----------------------------------------------------------------------------
+void CPortalRenderTargets::InitClientRenderTargets( IMaterialSystem* pMaterialSystem, IMaterialSystemHardwareConfig* pHardwareConfig )
+{
+	// If they don't support stencils, allocate render targets for drawing portals.
+	// TODO: When stencils are default, do the below check before bothering to allocate the RTs
+	//		and make sure that switching from Stencil<->RT mode reinits the material system.
+//	if ( materials->StencilBufferBits() == 0 )
+	if ( IsPC() || !IsX360() )
+	{
+		m_Portal1Texture.Init( InitPortal1Texture( pMaterialSystem ) );
+		m_Portal2Texture.Init( InitPortal2Texture( pMaterialSystem ) );
+	}
+
+	m_DepthDoublerTexture.Init( InitDepthDoublerTexture( pMaterialSystem ) );
+
+	if ( IsPC() || !IsX360() )
+	{
+		InitPortalWaterTextures( pMaterialSystem );
+	}
+
+	// Water effects & camera from the base class (standard HL2 targets)
+	BaseClass::InitClientRenderTargets( pMaterialSystem, pHardwareConfig, 512, 256 );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Shutdown client render targets. This gets called during shutdown in the engine
+// Input  :  - 
+//-----------------------------------------------------------------------------
+void CPortalRenderTargets::ShutdownClientRenderTargets()
+{
+	m_Portal1Texture.Shutdown();
+	m_Portal2Texture.Shutdown();
+	m_DepthDoublerTexture.Shutdown();
+
+	for ( int i = 0; i < 2; ++i )
+	{
+		m_WaterReflectionTextures[i].Shutdown();
+		m_WaterRefractionTextures[i].Shutdown();
+	}
+
+	// Clean up standard HL2 RTs (camera and water)
+	BaseClass::ShutdownClientRenderTargets();
+}
+
+
+static CPortalRenderTargets g_PortalRenderTargets;
+EXPOSE_SINGLE_INTERFACE_GLOBALVAR( CPortalRenderTargets, IClientRenderTargets, CLIENTRENDERTARGETS_INTERFACE_VERSION, g_PortalRenderTargets );
+CPortalRenderTargets* portalrendertargets = &g_PortalRenderTargets;