2 files changed, 209 insertions, 0 deletions
diff --git a/utils/tgadiff/tgadiff.cpp b/utils/tgadiff/tgadiff.cpp
new file mode 100644
index 0000000..4265456
--- /dev/null
+++ b/utils/tgadiff/tgadiff.cpp
@@ -0,0 +1,184 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//===========================================================================//
+#include <stdlib.h>
+#include <stdio.h>
+#include <direct.h>
+#include "bitmap/tgaloader.h"
+#include "bitmap/tgawriter.h"
+#include "tier1/utlbuffer.h"
+#include "tier2/tier2.h"
+#include "mathlib/mathlib.h"
+#include "filesystem.h"
+
+void Usage( void )
+{
+	printf( "Usage: tgadiff src1.tga src2.tga diff.tga\n" );
+	exit( -1 );
+}
+
+int main( int argc, char **argv )
+{
+	if( argc != 4 )
+	{
+		Usage();
+	}
+
+	MathLib_Init( 2.2f, 2.2f, 0.0f, 2.0f );
+	InitDefaultFileSystem();
+
+	char pCurrentDirectory[MAX_PATH];
+	if ( _getcwd( pCurrentDirectory, sizeof(pCurrentDirectory) ) == NULL )
+	{
+		fprintf( stderr, "Unable to get the current directory\n" );
+		return -1;
+	}
+	Q_FixSlashes( pCurrentDirectory );
+	Q_StripTrailingSlash( pCurrentDirectory );
+
+	char pBuf[3][MAX_PATH];
+	const char *pFileName[3];
+	for ( int i = 0; i < 3; ++i )
+	{
+		if ( !Q_IsAbsolutePath( argv[i+1] ) )
+		{
+			Q_snprintf( pBuf[i], sizeof(pBuf[i]), "%s\\%s", pCurrentDirectory, argv[i+1] );
+			pFileName[i] = pBuf[i];
+		}
+		else
+		{
+			pFileName[i] = argv[i+1];
+		}
+	}
+
+	int width1, height1;
+	ImageFormat imageFormat1;
+	float gamma1;
+
+	CUtlBuffer buf1;
+	if ( !g_pFullFileSystem->ReadFile( pFileName[0], NULL, buf1 ) )
+	{
+		fprintf( stderr, "%s not found\n", pFileName[0] );
+		return -1;
+	}
+
+	if( !TGALoader::GetInfo( buf1, &width1, &height1, &imageFormat1, &gamma1 ) )
+	{
+		printf( "error loading %s\n", pFileName[0] );
+		exit( -1 );
+	}
+
+	int width2, height2;
+	ImageFormat imageFormat2;
+	float gamma2;
+
+	CUtlBuffer buf2;
+	if ( !g_pFullFileSystem->ReadFile( pFileName[1], NULL, buf2 ) )
+	{
+		fprintf( stderr, "%s not found\n", pFileName[1] );
+		return -1;
+	}
+
+	if( !TGALoader::GetInfo( buf2, &width2, &height2, &imageFormat2, &gamma2 ) )
+	{
+		printf( "error loading %s\n", pFileName[1] );
+		exit( -1 );
+	}
+
+	if( width1 != width2 || height1 != height2 )
+	{
+		printf( "image dimensions different (%dx%d!=%dx%d): can't do diff for %s\n", 
+			width1, height1, width2, height2, pFileName[2] );
+		exit( -1 );
+	}
+#if 0
+	// have to allow for different formats for now due to *.txt file screwup.
+	if( imageFormat1 != imageFormat2 )
+	{
+		printf( "image format different (%s!=%s). . can't do diff for %s\n", 
+			ImageLoader::GetName( imageFormat1 ), ImageLoader::GetName( imageFormat2 ), pFileName[2] );
+		exit( -1 );
+	}
+#endif
+	if( gamma1 != gamma2 )
+	{
+		printf( "image gamma different (%f!=%f). . can't do diff for %s\n", gamma1, gamma2, pFileName[2] );
+		exit( -1 );
+	}
+
+	unsigned char *pImage1Tmp = new unsigned char[ImageLoader::GetMemRequired( width1, height1, 1, imageFormat1, false )];
+	unsigned char *pImage2Tmp = new unsigned char[ImageLoader::GetMemRequired( width2, height2, 1, imageFormat2, false )];
+
+	buf1.SeekGet( CUtlBuffer::SEEK_HEAD, 0 );
+	if( !TGALoader::Load( pImage1Tmp, buf1, width1, height1, imageFormat1, 2.2f, false ) )
+	{
+		printf( "error loading %s\n", pFileName[0] );
+		exit( -1 );
+	}
+	
+	buf2.SeekGet( CUtlBuffer::SEEK_HEAD, 0 );
+	if( !TGALoader::Load( pImage2Tmp, buf2, width2, height2, imageFormat2, 2.2f, false ) )
+	{
+		printf( "error loading %s\n", pFileName[1] );
+		exit( -1 );
+	}
+
+	unsigned char *pImage1 = new unsigned char[ImageLoader::GetMemRequired( width1, height1, 1, IMAGE_FORMAT_ABGR8888, false )];
+	unsigned char *pImage2 = new unsigned char[ImageLoader::GetMemRequired( width2, height2, 1, IMAGE_FORMAT_ABGR8888, false )];
+	unsigned char *pDiff = new unsigned char[ImageLoader::GetMemRequired( width2, height2, 1, IMAGE_FORMAT_ABGR8888, false )];
+	ImageLoader::ConvertImageFormat( pImage1Tmp, imageFormat1, pImage1, IMAGE_FORMAT_ABGR8888, width1, height1, 0, 0 );
+	ImageLoader::ConvertImageFormat( pImage2Tmp, imageFormat2, pImage2, IMAGE_FORMAT_ABGR8888, width2, height2, 0, 0 );
+
+	int sizeInBytes = ImageLoader::SizeInBytes( IMAGE_FORMAT_ABGR8888 );
+	bool isDifferent = false;
+	for( int i = 0; i < width1 * height1 * sizeInBytes; i++ )
+	{
+		int d;
+		d = pImage2[i] - pImage1[i];
+		pDiff[i] = d > 0 ? d : -d;
+		if( d != 0 )
+		{
+			isDifferent = true;
+		}
+	}
+
+	if( !isDifferent )
+	{
+		printf( "Files are the same %s %s : not generating %s\n", pFileName[0], pFileName[1], pFileName[2] );
+		exit( -1 );
+	}
+	else
+	{
+		printf( "Generating diff: %s!\n", pFileName[2] );
+	}
+
+	ImageFormat dstImageFormat;
+	// get rid of this until we get the formats matching
+//	if( sizeInBytes == 3 )
+//	{
+//		dstImageFormat = IMAGE_FORMAT_RGB888;
+//	}
+//	else
+	{
+		dstImageFormat = IMAGE_FORMAT_RGBA8888;
+	}
+	
+	CUtlBuffer outBuffer;
+	if ( !TGAWriter::WriteToBuffer( pDiff, outBuffer, width1, height1, dstImageFormat, dstImageFormat ) )
+	{
+		printf( "error writing %s to buffer\n", pFileName[2] );
+		exit( -1 );
+	}
+	
+	if ( !g_pFullFileSystem->WriteFile( pFileName[2], NULL, outBuffer ) )
+	{
+		fprintf( stderr, "unable to write %s\n", pFileName[2] );
+		return -1;
+	}
+
+	return 0;	
+}
diff --git a/utils/tgadiff/tgadiff.vpc b/utils/tgadiff/tgadiff.vpc
new file mode 100644
index 0000000..16c63b4
--- /dev/null
+++ b/utils/tgadiff/tgadiff.vpc
@@ -0,0 +1,25 @@
+//-----------------------------------------------------------------------------
+//	TGADIFF.VPC
+//
+//	Project Script
+//-----------------------------------------------------------------------------
+
+$Macro SRCDIR		"..\.."
+$Macro OUTBINDIR	"$SRCDIR\..\game\bin"
+
+$Include "$SRCDIR\vpc_scripts\source_exe_con_base.vpc"
+
+$Project "Tgadiff"
+{
+	$Folder	"Source Files"
+	{
+		$File	"tgadiff.cpp"
+	}
+
+	$Folder	"Link Libraries"
+	{
+		$Lib bitmap
+		$Lib mathlib
+		$Lib tier2
+	}
+}