godot/thirdparty/etc2comp/EtcIndividualTrys.cpp
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

86 lines
2.9 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.
*/
/*
EtcIndividualTrys.cpp
Gathers the results of the various encoding trys for both halves of a 4x4 block for Individual mode
*/
#include "EtcConfig.h"
#include "EtcIndividualTrys.h"
#include <assert.h>
namespace Etc
{
// ----------------------------------------------------------------------------------------------------
// construct a list of trys (encoding attempts)
//
// a_frgbaColor1 is the basecolor for the first half
// a_frgbaColor2 is the basecolor for the second half
// a_pauiPixelMapping1 is the pixel order for the first half
// a_pauiPixelMapping2 is the pixel order for the second half
// a_uiRadius is the amount to vary the base colors
//
IndividualTrys::IndividualTrys(ColorFloatRGBA a_frgbaColor1, ColorFloatRGBA a_frgbaColor2,
const unsigned int *a_pauiPixelMapping1,
const unsigned int *a_pauiPixelMapping2,
unsigned int a_uiRadius)
{
assert(a_uiRadius <= MAX_RADIUS);
ColorFloatRGBA frgbaQuantizedColor1 = a_frgbaColor1.QuantizeR4G4B4();
ColorFloatRGBA frgbaQuantizedColor2 = a_frgbaColor2.QuantizeR4G4B4();
// quantize base colors
// ensure that trys with a_uiRadius don't overflow
int iRed1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntRed(15.0f), a_uiRadius);
int iGreen1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntGreen(15.0f), a_uiRadius);
int iBlue1 = MoveAwayFromEdge(frgbaQuantizedColor1.IntBlue(15.0f), a_uiRadius);
int iRed2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntRed(15.0f), a_uiRadius);
int iGreen2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntGreen(15.0f), a_uiRadius);
int iBlue2 = MoveAwayFromEdge(frgbaQuantizedColor2.IntBlue(15.0f), a_uiRadius);
m_half1.Init(iRed1, iGreen1, iBlue1, a_pauiPixelMapping1, a_uiRadius);
m_half2.Init(iRed2, iGreen2, iBlue2, a_pauiPixelMapping2, a_uiRadius);
}
// ----------------------------------------------------------------------------------------------------
//
void IndividualTrys::Half::Init(int a_iRed, int a_iGreen, int a_iBlue,
const unsigned int *a_pauiPixelMapping, unsigned int a_uiRadius)
{
m_iRed = a_iRed;
m_iGreen = a_iGreen;
m_iBlue = a_iBlue;
m_pauiPixelMapping = a_pauiPixelMapping;
m_uiRadius = a_uiRadius;
m_uiTrys = 0;
}
// ----------------------------------------------------------------------------------------------------
//
} // namespace Etc