godot/thirdparty/etc2comp/EtcDifferentialTrys.h
Ferenc Arn 6a9c990da7 Add ETC1/ETC2 compression support though etc2comp.
Remove rg-etc1 code. Also updated travis to use ubuntu 14.04.

Fixes #8457.
2017-05-31 18:59:00 -05:00

98 lines
2.1 KiB
C++

/*
* Copyright 2015 The Etc2Comp Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "EtcColorFloatRGBA.h"
namespace Etc
{
class DifferentialTrys
{
public:
static const unsigned int MAX_RADIUS = 2;
DifferentialTrys(ColorFloatRGBA a_frgbaColor1,
ColorFloatRGBA a_frgbaColor2,
const unsigned int *a_pauiPixelMapping1,
const unsigned int *a_pauiPixelMapping2,
unsigned int a_uiRadius,
int a_iGrayOffset1, int a_iGrayOffset2);
inline static int MoveAwayFromEdge(int a_i, int a_iDistance)
{
if (a_i < (0+ a_iDistance))
{
return (0 + a_iDistance);
}
else if (a_i > (31- a_iDistance))
{
return (31 - a_iDistance);
}
return a_i;
}
class Try
{
public :
static const unsigned int SELECTORS = 8; // per half
int m_iRed;
int m_iGreen;
int m_iBlue;
unsigned int m_uiCW;
unsigned int m_auiSelectors[SELECTORS];
float m_fError;
};
class Half
{
public:
static const unsigned int MAX_TRYS = 125;
void Init(int a_iRed, int a_iGreen, int a_iBlue,
const unsigned int *a_pauiPixelMapping,
unsigned int a_uiRadius);
// center of trys
int m_iRed;
int m_iGreen;
int m_iBlue;
const unsigned int *m_pauiPixelMapping;
unsigned int m_uiRadius;
unsigned int m_uiTrys;
Try m_atry[MAX_TRYS];
Try *m_ptryBest;
};
Half m_half1;
Half m_half2;
bool m_boolSeverelyBentColors;
};
// ----------------------------------------------------------------------------------------------------
//
} // namespace Etc