Fix warnings on Windows and support the treat warnings as errors option.

BPTCEncoder/src/BC7Compressor.cpp

@@ -605,7 +605,7 @@ static inline float frand() {
     uint32 fltAsInt;
     float flt;
   } fltUnion = { (127 << 23) | m };
-  return fltUnion.flt - 1.0;
+  return fltUnion.flt - 1.0f;
 }
 
 bool BC7CompressionMode::AcceptNewEndpointError(double newError, double oldError, float temp) const {

CLTool/CMakeLists.txt

@@ -54,11 +54,11 @@ ADD_EXECUTABLE(
 	${SOURCES}
 )
 
-# Make sure that if we're using boost libraries for threading then we add this linker path.
-# Personally, I believe this is a bug in CMAKE but I'm not exactly sure.
-#IF( THREAD_API MATCHES "Boost" )
-#	SET_TARGET_PROPERTIES(tc PROPERTIES LINK_FLAGS "/LIBPATH:\"${Boost_LIBRARY_DIRS}\"")
-#ENDIF()
+# Add flag for link time code generation. This was used to build the libpng libraries, so we should
+# probably also include it for this project as well...
+IF( MSVC )
+  SET_TARGET_PROPERTIES(tc PROPERTIES LINK_FLAGS "/LTCG")
+ENDIF()
 
 TARGET_LINK_LIBRARIES( tc BPTCEncoder )
 TARGET_LINK_LIBRARIES( tc TexCompIO )

CMakeLists.txt

@@ -68,9 +68,15 @@ IF(MSVC)
 
 	SET(MSVC_LIB_DIR "${MSVC_INSTALL_PATH}/lib/${MSVC_ARCHITECTURE_STRING}/${MSVC_VERSION_STRING}")
 	SET(CMAKE_LIBRARY_PATH "${CMAKE_LIBRARY_PATH};${MSVC_LIB_DIR}")
+
+  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+	SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+
 ELSEIF(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
+
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -fms-extensions")
   SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -fms-extensions")
+
 ENDIF(MSVC)
 
 IF(TREAT_WARNINGS_AS_ERRORS)

IO/include/FileStream.h

@@ -79,7 +79,7 @@ class FileStream {
   int32 Write(const uint8 *buf, uint32 bufSz);
 
   // Returns where in the filestream we are. Returns -1 on error.
-  int64 Tell();
+  int32 Tell();
   
   enum ESeekPosition {
     eSeekPosition_Beginning,

IO/src/FileStreamWin32.cpp

@@ -197,7 +197,7 @@ int32 FileStream::Write(const uint8 *buf, uint32 bufSz) {
   return amtWritten;
 }
 
-int64 FileStream::Tell() {
+int32 FileStream::Tell() {
   HANDLE fp = m_Impl->GetFileHandle();
   if(NULL == fp) {
     return -1;

IO/src/ImageFile.cpp

@@ -231,7 +231,7 @@ unsigned char *ImageFile::ReadFileData(const CHAR *filename) {
 
   // Figure out the filesize.
   fstr.Seek(0, FileStream::eSeekPosition_End);
-  uint64 fileSize = fstr.Tell();
+  uint32 fileSize = fstr.Tell();
 
   // Allocate data for file contents
   unsigned char *rawData = new unsigned char[fileSize];

IO/src/ImageWriterPNG.h

@@ -55,7 +55,7 @@ class ImageWriterPNG : public ImageWriter {
 
   virtual bool WriteImage();
  private:
-	uint64 m_StreamPosition;
+	uint32 m_StreamPosition;
 	uint32 m_TotalBytesWritten;
 	friend class PNGStreamWriter;
 };