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utils/pfmcomp/pfmcomp.cpp

@@ -0,0 +1,53 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+#include <tier0/platform.h>
+#include "bitmap/float_bm.h"
+#include "mathlib/mathlib.h"
+#include <tier2/tier2.h>
+
+
+
+
+
+void main(int argc,char **argv)
+{
+	InitCommandLineProgram( argc, argv );
+	if ((argc<2) || (argc>3))
+	{
+		printf("format is %s imagefile.pfm [scalefactor]\n",argv[0]);
+	}
+	else
+	{
+		FloatBitMap_t cmap;
+		cmap.LoadFromPFM(argv[1]);
+		if (argc==3)										// scale factor specified
+		{
+			float scale_factor=atof(argv[2]);
+			for(int y=0;y<cmap.Height;y++)
+				for(int x=0;x<cmap.Width;x++)
+					for(int c=0;c<3;c++)
+						cmap.Pixel(x,y,c) *= scale_factor;
+		}
+		FloatBitMap_t save_orig(&cmap);
+		cmap.CompressTo8Bits(8.0);
+		char fname[1024];
+		strcpy(fname,argv[1]);
+		char *dot=strstr(fname,".pfm");
+		if (! dot)
+			dot=fname+strlen(fname);
+		strcpy(dot,"_compressed.tga");
+		cmap.WriteTGAFile(fname);
+
+#ifdef WRITE_OUT_COMPARISON_IMAGES
+		// now, write out comparison images
+		cmap.Uncompress(8.0);
+		cmap.RaiseToPower(1.0/2.2);
+		strcpy(dot,"_ref_comp.tga");
+		cmap.WriteTGAFile(fname);
+		save_orig.RaiseToPower(1.0/2.2);
+		strcpy(dot,"_ref_orig.tga");
+		save_orig.WriteTGAFile(fname);
+#endif
+
+	}
+}
+