Added original SDK code for Alien Swarm.

game/client/rendertexture.cpp

@@ -0,0 +1,263 @@
+//========= Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+// Implements local hooks into named renderable textures.
+// See matrendertexture.cpp in material system for list of available RT's
+//
+//=============================================================================//
+
+#include "materialsystem/imesh.h"
+#include "materialsystem/ITexture.h"
+#include "materialsystem/MaterialSystemUtil.h"
+#include "tier1/strtools.h"
+#include "rendertexture.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+void ReleaseRenderTargets( int nChangeFlags );
+
+void AddReleaseFunc( void )
+{
+	static bool bAdded = false;
+	if( !bAdded )
+	{
+		bAdded = true;
+		materials->AddReleaseFunc( ReleaseRenderTargets );
+	}
+}
+
+//=============================================================================
+// Power of Two Frame Buffer Texture
+//=============================================================================
+static CTextureReference s_pPowerOfTwoFrameBufferTexture;
+ITexture *GetPowerOfTwoFrameBufferTexture( void )
+{
+	if ( IsX360() )
+	{
+		return GetFullFrameFrameBufferTexture( 1 );
+	}
+
+	if ( !s_pPowerOfTwoFrameBufferTexture )
+	{
+		s_pPowerOfTwoFrameBufferTexture.Init( materials->FindTexture( "_rt_PowerOfTwoFB", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pPowerOfTwoFrameBufferTexture ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pPowerOfTwoFrameBufferTexture;
+}
+
+//=============================================================================
+// Fullscreen Texture
+//=============================================================================
+static CTextureReference s_pFullscreenTexture;
+ITexture *GetFullscreenTexture( void )
+{
+	if ( !s_pFullscreenTexture )
+	{
+		s_pFullscreenTexture.Init( materials->FindTexture( "_rt_Fullscreen", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pFullscreenTexture ) );
+		AddReleaseFunc();
+	}
+
+	return s_pFullscreenTexture;
+}
+
+//=============================================================================
+// Camera Texture
+//=============================================================================
+static CTextureReference s_pCameraTexture;
+ITexture *GetCameraTexture( void )
+{
+	if ( !s_pCameraTexture )
+	{
+		s_pCameraTexture.Init( materials->FindTexture( "_rt_Camera", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pCameraTexture ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pCameraTexture;
+}
+
+//=============================================================================
+// Full Frame Depth Texture
+//=============================================================================
+static CTextureReference s_pFullFrameDepthTexture;
+ITexture *GetFullFrameDepthTexture( void )
+{
+	if ( !s_pFullFrameDepthTexture )
+	{
+		s_pFullFrameDepthTexture.Init( materials->FindTexture( "_rt_FullFrameDepth", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pFullFrameDepthTexture ) );
+		AddReleaseFunc();
+	}
+
+	return s_pFullFrameDepthTexture;
+}
+
+//=============================================================================
+// Full Frame Buffer Textures
+//=============================================================================
+static CTextureReference s_pFullFrameFrameBufferTexture[MAX_FB_TEXTURES];
+ITexture *GetFullFrameFrameBufferTexture( int textureIndex )
+{
+	if ( !s_pFullFrameFrameBufferTexture[textureIndex] )
+	{
+		char name[256];
+		if( textureIndex != 0 )
+		{
+			sprintf( name, "_rt_FullFrameFB%d", textureIndex );
+		}
+		else
+		{
+			Q_strcpy( name, "_rt_FullFrameFB" );
+		}
+		s_pFullFrameFrameBufferTexture[textureIndex].Init( materials->FindTexture( name, TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pFullFrameFrameBufferTexture[textureIndex] ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pFullFrameFrameBufferTexture[textureIndex];
+}
+
+
+//=============================================================================
+// Water reflection
+//=============================================================================
+static CTextureReference s_pWaterReflectionTexture;
+ITexture *GetWaterReflectionTexture( void )
+{
+	if ( !s_pWaterReflectionTexture )
+	{
+		s_pWaterReflectionTexture.Init( materials->FindTexture( "_rt_WaterReflection", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pWaterReflectionTexture ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pWaterReflectionTexture;
+}
+
+//=============================================================================
+// Water refraction
+//=============================================================================
+static CTextureReference s_pWaterRefractionTexture;
+ITexture *GetWaterRefractionTexture( void )
+{
+	if ( !s_pWaterRefractionTexture )
+	{
+		s_pWaterRefractionTexture.Init( materials->FindTexture( "_rt_WaterRefraction", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pWaterRefractionTexture ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pWaterRefractionTexture;
+}
+
+//=============================================================================
+// Small Buffer HDR0
+//=============================================================================
+static CTextureReference s_pSmallBufferHDR0;
+ITexture *GetSmallBufferHDR0( void )
+{
+	if ( !s_pSmallBufferHDR0 )
+	{
+		s_pSmallBufferHDR0.Init( materials->FindTexture( "_rt_SmallHDR0", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pSmallBufferHDR0 ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pSmallBufferHDR0;
+}
+
+//=============================================================================
+// Small Buffer HDR1
+//=============================================================================
+static CTextureReference s_pSmallBufferHDR1;
+ITexture *GetSmallBufferHDR1( void )
+{
+	if ( !s_pSmallBufferHDR1 )
+	{
+		s_pSmallBufferHDR1.Init( materials->FindTexture( "_rt_SmallHDR1", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pSmallBufferHDR1 ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pSmallBufferHDR1;
+}
+
+//=============================================================================
+// Quarter Sized FB0
+//=============================================================================
+static CTextureReference s_pQuarterSizedFB0;
+ITexture *GetSmallBuffer0( void )
+{
+	if ( !s_pQuarterSizedFB0 )
+	{
+		s_pQuarterSizedFB0.Init( materials->FindTexture( "_rt_SmallFB0", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pQuarterSizedFB0 ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pQuarterSizedFB0;
+}
+
+//=============================================================================
+// Quarter Sized FB1
+//=============================================================================
+static CTextureReference s_pQuarterSizedFB1;
+ITexture *GetSmallBuffer1( void )
+{
+	if ( !s_pQuarterSizedFB1 )
+	{
+		s_pQuarterSizedFB1.Init( materials->FindTexture( "_rt_SmallFB1", TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_pQuarterSizedFB1 ) );
+		AddReleaseFunc();
+	}
+	
+	return s_pQuarterSizedFB1;
+}
+
+//=============================================================================
+// Teeny Textures
+//=============================================================================
+static CTextureReference s_TeenyTextures[MAX_TEENY_TEXTURES];
+ITexture *GetTeenyTexture( int which )
+{
+	if ( IsX360() )
+	{
+		Assert( 0 );
+		return NULL;
+	}
+
+	Assert( which < MAX_TEENY_TEXTURES );
+
+	if ( !s_TeenyTextures[which] )
+	{
+		char nbuf[20];
+		sprintf( nbuf, "_rt_TeenyFB%d", which );
+		s_TeenyTextures[which].Init( materials->FindTexture( nbuf, TEXTURE_GROUP_RENDER_TARGET ) );
+		Assert( !IsErrorTexture( s_TeenyTextures[which] ) );
+		AddReleaseFunc();
+	}
+	return s_TeenyTextures[which];
+}
+
+void ReleaseRenderTargets( int nChangeFlags )
+{
+	if ( nChangeFlags & MATERIAL_RESTORE_VERTEX_FORMAT_CHANGED )
+		return;
+
+	s_pPowerOfTwoFrameBufferTexture.Shutdown();
+	s_pCameraTexture.Shutdown();
+	s_pWaterReflectionTexture.Shutdown();
+	s_pWaterRefractionTexture.Shutdown();
+	s_pQuarterSizedFB0.Shutdown();
+	s_pQuarterSizedFB1.Shutdown();
+	s_pFullFrameDepthTexture.Shutdown();
+
+	for (int i=0; i<MAX_FB_TEXTURES; ++i)
+	{
+		s_pFullFrameFrameBufferTexture[i].Shutdown();
+	}
+}