hwUnlitShader/MNormalMapConverter.h

hwUnlitShader/MNormalMapConverter.h
#ifndef MAYA_API_MNormalMapConverter
#define MAYA_API_MNormalMapConverter
// MNormalMapConverter.h
//-
// ==========================================================================
// Copyright (C) 1995 - 2006 Autodesk, Inc. and/or its licensors. All
// rights reserved.
//
// The coded instructions, statements, computer programs, and/or related
// material (collectively the "Data") in these files contain unpublished
// information proprietary to Autodesk, Inc. ("Autodesk") and/or its
// licensors, which is protected by U.S. and Canadian federal copyright
// law and by international treaties.
//
// The Data is provided for use exclusively by You. You have the right
// to use, modify, and incorporate this Data into other products for
// purposes authorized by the Autodesk software license agreement,
// without fee.
//
// The copyright notices in the Software and this entire statement,
// including the above license grant, this restriction and the
// following disclaimer, must be included in all copies of the
// Software, in whole or in part, and all derivative works of
// the Software, unless such copies or derivative works are solely
// in the form of machine-executable object code generated by a
// source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
// AUTODESK DOES NOT MAKE AND HEREBY DISCLAIMS ANY EXPRESS OR IMPLIED
// WARRANTIES INCLUDING, BUT NOT LIMITED TO, THE WARRANTIES OF
// NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR
// PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE, OR
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// DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES, EVEN IF AUTODESK
// AND/OR ITS LICENSORS HAS BEEN ADVISED OF THE POSSIBILITY
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// ==========================================================================
//+
class MNormalMapConverter
{
public:
enum OutFormatType
{
RGBA,
HILO
};
MNormalMapConverter(){};
~MNormalMapConverter(){};
// These functions assume the that file texture is square, and
// that its dimensions are exponents of 2.
//
// Convert the heightfield texture to its corresponding normal map texture
//
bool convertToNormalMap(
unsigned char* inImagePtr,
unsigned int width,
unsigned int height,
OutFormatType outputPixelFormat,
float bumpScale = 1.0,
unsigned char* outImagePtr = NULL );
// Convert the normal map texture to its corresponding heightfield texture
//
bool convertToHeightMap(
unsigned char* inImagePtr,
unsigned int width,
unsigned int height,
OutFormatType outputPixelFormat,
float heightScale = 1.0,
unsigned char* outImagePtr = NULL );
protected:
// Convert the heightfield to the normal map texture in place
// (replace the input texture with the normal map version)
//
bool convertToNormalMap_InPlace(
unsigned char* inImagePtr,
unsigned int width,
unsigned int height,
OutFormatType outputPixelFormat,
float bumpScale );
};
#endif // MAYA_API_MNormalMapConverter