#ifndef _TCURGBA_HPP
#define _TCURGBA_HPP
/*-------------------------------------------------------------------------
* drawElements Quality Program Tester Core
* ----------------------------------------
*
* Copyright 2014 The Android Open Source Project
*
* 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.
*
*//*!
* \file
* \brief RGBA8888 color type.
*//*--------------------------------------------------------------------*/
#include "tcuDefs.hpp"
#include "deInt32.h"
#include "tcuVectorType.hpp"
#include <sstream>
namespace tcu
{
/*--------------------------------------------------------------------*//*!
* \brief RGBA8888 color struct
*//*--------------------------------------------------------------------*/
class RGBA
{
public:
enum
{
RED_SHIFT = 0,
GREEN_SHIFT = 8,
BLUE_SHIFT = 16,
ALPHA_SHIFT = 24
};
enum
{
RED_MASK = (1<<0),
GREEN_MASK = (1<<1),
BLUE_MASK = (1<<2),
ALPHA_MASK = (1<<3)
};
RGBA (void) { m_value = 0; }
RGBA (int r, int g, int b, int a)
{
DE_ASSERT(deInRange32(r, 0, 255));
DE_ASSERT(deInRange32(g, 0, 255));
DE_ASSERT(deInRange32(b, 0, 255));
DE_ASSERT(deInRange32(a, 0, 255));
m_value = ((deUint32)a << ALPHA_SHIFT) | ((deUint32)r << RED_SHIFT) | ((deUint32)g << GREEN_SHIFT) | ((deUint32)b << BLUE_SHIFT);
}
explicit RGBA (deUint32 val)
{
m_value = val;
}
explicit RGBA (const Vec4& v);
void setRed (int v) { DE_ASSERT(deInRange32(v, 0, 255)); m_value = (m_value & ~((deUint32)0xFFu << RED_SHIFT)) | ((deUint32)v << RED_SHIFT); }
void setGreen (int v) { DE_ASSERT(deInRange32(v, 0, 255)); m_value = (m_value & ~((deUint32)0xFFu << GREEN_SHIFT)) | ((deUint32)v << GREEN_SHIFT); }
void setBlue (int v) { DE_ASSERT(deInRange32(v, 0, 255)); m_value = (m_value & ~((deUint32)0xFFu << BLUE_SHIFT)) | ((deUint32)v << BLUE_SHIFT); }
void setAlpha (int v) { DE_ASSERT(deInRange32(v, 0, 255)); m_value = (m_value & ~((deUint32)0xFFu << ALPHA_SHIFT)) | ((deUint32)v << ALPHA_SHIFT); }
int getRed (void) const { return (int)((m_value >> (deUint32)RED_SHIFT) & 0xFFu); }
int getGreen (void) const { return (int)((m_value >> (deUint32)GREEN_SHIFT) & 0xFFu); }
int getBlue (void) const { return (int)((m_value >> (deUint32)BLUE_SHIFT) & 0xFFu); }
int getAlpha (void) const { return (int)((m_value >> (deUint32)ALPHA_SHIFT) & 0xFFu); }
deUint32 getPacked (void) const { return m_value; }
bool isBelowThreshold (RGBA thr) const { return (getRed() <= thr.getRed()) && (getGreen() <= thr.getGreen()) && (getBlue() <= thr.getBlue()) && (getAlpha() <= thr.getAlpha()); }
static RGBA fromBytes (const deUint8* bytes) { return RGBA(bytes[0], bytes[1], bytes[2], bytes[3]); }
void toBytes (deUint8* bytes) const { bytes[0] = (deUint8)getRed(); bytes[1] = (deUint8)getGreen(); bytes[2] = (deUint8)getBlue(); bytes[3] = (deUint8)getAlpha(); }
Vec4 toVec (void) const;
IVec4 toIVec (void) const;
bool operator== (const RGBA& v) const { return (m_value == v.m_value); }
bool operator!= (const RGBA& v) const { return (m_value != v.m_value); }
// Color constants. Designed as methods to avoid static-initialization-order fiasco.
static inline const RGBA red (void) { return RGBA(0xFF, 0x0, 0x0, 0xFF); }
static inline const RGBA green (void) { return RGBA(0x0, 0xFF, 0x0, 0xFF); }
static inline const RGBA blue (void) { return RGBA(0x0, 0x0, 0xFF, 0xFF); }
static inline const RGBA gray (void) { return RGBA(0x80, 0x80, 0x80, 0xFF); }
static inline const RGBA white (void) { return RGBA(0xFF, 0xFF, 0xFF, 0xFF); }
static inline const RGBA black (void) { return RGBA(0x0, 0x0, 0x0, 0xFF); }
private:
deUint32 m_value;
} DE_WARN_UNUSED_TYPE;
inline bool compareEqualMasked (RGBA a, RGBA b, deUint32 cmpMask)
{
RGBA mask((cmpMask&RGBA::RED_MASK)?0xFF:0, (cmpMask&RGBA::GREEN_MASK)?0xFF:0, (cmpMask&RGBA::BLUE_MASK)?0xFF:0, (cmpMask&RGBA::ALPHA_MASK)?0xFF:0);
deUint32 aPacked = a.getPacked();
deUint32 bPacked = b.getPacked();
deUint32 maskPacked = mask.getPacked();
return (aPacked & maskPacked) == (bPacked & maskPacked);
}
inline RGBA computeAbsDiff (RGBA a, RGBA b)
{
return RGBA(
deAbs32(a.getRed() - b.getRed()),
deAbs32(a.getGreen() - b.getGreen()),
deAbs32(a.getBlue() - b.getBlue()),
deAbs32(a.getAlpha() - b.getAlpha()));
}
inline RGBA blend (RGBA a, RGBA b, float t)
{
DE_ASSERT(t >= 0.0f && t <= 1.0f);
float it = 1.0f - t;
// \todo [petri] Handling of alpha!
return RGBA(
(int)(it*(float)a.getRed() + t*(float)b.getRed() + 0.5f),
(int)(it*(float)a.getGreen() + t*(float)b.getGreen() + 0.5f),
(int)(it*(float)a.getBlue() + t*(float)b.getBlue() + 0.5f),
(int)(it*(float)a.getAlpha() + t*(float)b.getAlpha() + 0.5f));
}
inline bool compareThreshold (RGBA a, RGBA b, RGBA threshold)
{
if (a == b) return true; // Quick-accept
return computeAbsDiff(a, b).isBelowThreshold(threshold);
}
inline RGBA max (RGBA a, RGBA b)
{
return RGBA(deMax32(a.getRed(), b.getRed()),
deMax32(a.getGreen(), b.getGreen()),
deMax32(a.getBlue(), b.getBlue()),
deMax32(a.getAlpha(), b.getAlpha()));
}
RGBA computeAbsDiffMasked (RGBA a, RGBA b, deUint32 cmpMask);
bool compareThresholdMasked (RGBA a, RGBA b, RGBA threshold, deUint32 cmpMask);
// Arithmetic operators (saturating if not stated otherwise).
inline RGBA operator+ (const RGBA& a, const RGBA& b)
{
return RGBA(deClamp32(a.getRed() + b.getRed(), 0, 255),
deClamp32(a.getGreen() + b.getGreen(), 0, 255),
deClamp32(a.getBlue() + b.getBlue(), 0, 255),
deClamp32(a.getAlpha() + b.getAlpha(), 0, 255));
}
inline RGBA operator- (const RGBA& a, const RGBA& b)
{
return RGBA(deClamp32(a.getRed() - b.getRed(), 0, 255),
deClamp32(a.getGreen() - b.getGreen(), 0, 255),
deClamp32(a.getBlue() - b.getBlue(), 0, 255),
deClamp32(a.getAlpha() - b.getAlpha(), 0, 255));
}
inline RGBA operator* (const RGBA& a, const int b)
{
return RGBA(deClamp32(a.getRed() * b, 0, 255),
deClamp32(a.getGreen() * b, 0, 255),
deClamp32(a.getBlue() * b, 0, 255),
deClamp32(a.getAlpha() * b, 0, 255));
}
inline std::ostream& operator<< (std::ostream& stream, RGBA c)
{
return stream << "RGBA(" << c.getRed() << ", " << c.getGreen() << ", " << c.getBlue() << ", " << c.getAlpha() << ")";
}
} // tcu
#endif // _TCURGBA_HPP