mirror of
https://github.com/nillerusr/source-engine.git
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896 lines
23 KiB
C++
896 lines
23 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//
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//===========================================================================//
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#ifndef PIXELWRITER_H
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#define PIXELWRITER_H
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#ifdef _WIN32
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#pragma once
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#endif
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#ifdef _WIN32
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#define FORCEINLINE_PIXEL FORCEINLINE
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#elif POSIX
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#define FORCEINLINE_PIXEL inline
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#else
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#error "implement me"
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#endif
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#include "bitmap/imageformat.h"
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#include "tier0/dbg.h"
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#include "mathlib/compressed_vector.h"
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#include "mathlib/ssemath.h"
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//-----------------------------------------------------------------------------
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// Color writing class
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//-----------------------------------------------------------------------------
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class CPixelWriter
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{
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public:
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FORCEINLINE void SetPixelMemory( ImageFormat format, void* pMemory, int stride );
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FORCEINLINE void *GetPixelMemory() { return m_pBase; }
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// this is no longer used:
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#if 0 // defined( _X360 )
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// set after SetPixelMemory()
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FORCEINLINE void ActivateByteSwapping( bool bSwap );
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#endif
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FORCEINLINE void Seek( int x, int y ) RESTRICT;
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FORCEINLINE void* SkipBytes( int n ) RESTRICT;
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FORCEINLINE void SkipPixels( int n );
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FORCEINLINE void WritePixel( int r, int g, int b, int a = 255 );
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FORCEINLINE void WritePixelNoAdvance( int r, int g, int b, int a = 255 ) RESTRICT;
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FORCEINLINE void WritePixelSigned( int r, int g, int b, int a = 255 );
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FORCEINLINE void WritePixelNoAdvanceSigned( int r, int g, int b, int a = 255 );
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FORCEINLINE void ReadPixelNoAdvance( int &r, int &g, int &b, int &a );
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// Floating point formats
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FORCEINLINE void WritePixelNoAdvanceF( float r, float g, float b, float a = 1.0f ) RESTRICT;
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FORCEINLINE void WritePixelF( float r, float g, float b, float a = 1.0f );
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// SIMD formats
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FORCEINLINE void WritePixel( FLTX4 rgba ) RESTRICT;
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FORCEINLINE void WritePixelNoAdvance( FLTX4 rgba );
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#ifdef _X360
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// here are some explicit formats so we can avoid the switch:
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FORCEINLINE void WritePixelNoAdvance_RGBA8888( FLTX4 rgba );
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FORCEINLINE void WritePixelNoAdvance_BGRA8888( FLTX4 rgba );
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// as above, but with m_pBits passed in to avoid a LHS
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FORCEINLINE void WritePixelNoAdvance_BGRA8888( FLTX4 rgba, void *pBits ) RESTRICT;
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// for writing entire SIMD registers at once when they have
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// already been packed, and when m_pBits is vector-aligned
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// (which is a requirement for write-combined memory)
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// offset is added to m_pBits (saving you from the obligatory
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// LHS of a SkipBytes)
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FORCEINLINE void WriteFourPixelsExplicitLocation_BGRA8888( FLTX4 rgba, int offset );
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#endif
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FORCEINLINE unsigned char GetPixelSize() RESTRICT { return m_Size; }
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FORCEINLINE bool IsUsingFloatFormat() RESTRICT const;
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FORCEINLINE unsigned char *GetCurrentPixel() { return m_pBits; }
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private:
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enum
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{
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PIXELWRITER_USING_FLOAT_FORMAT = 0x01,
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PIXELWRITER_USING_16BIT_FLOAT_FORMAT = 0x02,
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PIXELWRITER_SWAPBYTES = 0x04,
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};
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unsigned char* m_pBase;
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unsigned char* m_pBits;
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unsigned short m_BytesPerRow;
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unsigned char m_Size;
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unsigned char m_nFlags;
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signed short m_RShift;
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signed short m_GShift;
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signed short m_BShift;
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signed short m_AShift;
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unsigned int m_RMask;
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unsigned int m_GMask;
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unsigned int m_BMask;
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unsigned int m_AMask;
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#ifdef _X360
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ImageFormat m_Format;
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public:
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inline const ImageFormat &GetFormat() { return m_Format; }
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private:
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#endif
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};
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FORCEINLINE_PIXEL bool CPixelWriter::IsUsingFloatFormat() RESTRICT const
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{
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return (m_nFlags & PIXELWRITER_USING_FLOAT_FORMAT) != 0;
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}
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FORCEINLINE_PIXEL void CPixelWriter::SetPixelMemory( ImageFormat format, void* pMemory, int stride )
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{
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m_pBits = (unsigned char*)pMemory;
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m_pBase = m_pBits;
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m_BytesPerRow = (unsigned short)stride;
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m_nFlags = 0;
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#ifdef _X360
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m_Format = format;
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#endif
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switch ( format )
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{
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case IMAGE_FORMAT_R32F: // NOTE! : the low order bits are first in this naming convention.
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m_Size = 4;
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m_RShift = 0;
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m_GShift = 0;
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m_BShift = 0;
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m_AShift = 0;
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m_RMask = 0xFFFFFFFF;
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m_GMask = 0x0;
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m_BMask = 0x0;
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m_AMask = 0x0;
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m_nFlags |= PIXELWRITER_USING_FLOAT_FORMAT;
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break;
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case IMAGE_FORMAT_RGBA32323232F:
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m_Size = 16;
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m_RShift = 0;
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m_GShift = 32;
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m_BShift = 64;
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m_AShift = 96;
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m_RMask = 0xFFFFFFFF;
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m_GMask = 0xFFFFFFFF;
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m_BMask = 0xFFFFFFFF;
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m_AMask = 0xFFFFFFFF;
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m_nFlags |= PIXELWRITER_USING_FLOAT_FORMAT;
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break;
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case IMAGE_FORMAT_RGBA16161616F:
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m_Size = 8;
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m_RShift = 0;
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m_GShift = 16;
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m_BShift = 32;
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m_AShift = 48;
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m_RMask = 0xFFFF;
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m_GMask = 0xFFFF;
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m_BMask = 0xFFFF;
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m_AMask = 0xFFFF;
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m_nFlags |= PIXELWRITER_USING_FLOAT_FORMAT | PIXELWRITER_USING_16BIT_FLOAT_FORMAT;
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break;
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case IMAGE_FORMAT_RGBA8888:
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_RGBA8888:
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#endif
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m_Size = 4;
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m_RShift = 0;
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m_GShift = 8;
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m_BShift = 16;
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m_AShift = 24;
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m_RMask = 0xFF;
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m_GMask = 0xFF;
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m_BMask = 0xFF;
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m_AMask = 0xFF;
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break;
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case IMAGE_FORMAT_BGRA8888: // NOTE! : the low order bits are first in this naming convention.
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_BGRA8888:
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#endif
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m_Size = 4;
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m_RShift = 16;
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m_GShift = 8;
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m_BShift = 0;
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m_AShift = 24;
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m_RMask = 0xFF;
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m_GMask = 0xFF;
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m_BMask = 0xFF;
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m_AMask = 0xFF;
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break;
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case IMAGE_FORMAT_BGRX8888:
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_BGRX8888:
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#endif
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m_Size = 4;
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m_RShift = 16;
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m_GShift = 8;
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m_BShift = 0;
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m_AShift = 24;
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m_RMask = 0xFF;
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m_GMask = 0xFF;
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m_BMask = 0xFF;
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m_AMask = 0x00;
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break;
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case IMAGE_FORMAT_BGRA4444:
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m_Size = 2;
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m_RShift = 4;
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m_GShift = 0;
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m_BShift = -4;
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m_AShift = 8;
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m_RMask = 0xF0;
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m_GMask = 0xF0;
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m_BMask = 0xF0;
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m_AMask = 0xF0;
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break;
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case IMAGE_FORMAT_BGR888:
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m_Size = 3;
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m_RShift = 16;
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m_GShift = 8;
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m_BShift = 0;
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m_AShift = 0;
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m_RMask = 0xFF;
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m_GMask = 0xFF;
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m_BMask = 0xFF;
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m_AMask = 0x00;
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break;
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case IMAGE_FORMAT_BGR565:
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m_Size = 2;
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m_RShift = 8;
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m_GShift = 3;
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m_BShift = -3;
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m_AShift = 0;
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m_RMask = 0xF8;
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m_GMask = 0xFC;
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m_BMask = 0xF8;
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m_AMask = 0x00;
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break;
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case IMAGE_FORMAT_BGRA5551:
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case IMAGE_FORMAT_BGRX5551:
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m_Size = 2;
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m_RShift = 7;
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m_GShift = 2;
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m_BShift = -3;
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m_AShift = 8;
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m_RMask = 0xF8;
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m_GMask = 0xF8;
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m_BMask = 0xF8;
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m_AMask = 0x80;
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break;
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// GR - alpha format for HDR support
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case IMAGE_FORMAT_A8:
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m_Size = 1;
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m_RShift = 0;
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m_GShift = 0;
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m_BShift = 0;
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m_AShift = 0;
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m_RMask = 0x00;
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m_GMask = 0x00;
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m_BMask = 0x00;
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m_AMask = 0xFF;
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break;
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case IMAGE_FORMAT_UVWQ8888:
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m_Size = 4;
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m_RShift = 0;
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m_GShift = 8;
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m_BShift = 16;
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m_AShift = 24;
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m_RMask = 0xFF;
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m_GMask = 0xFF;
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m_BMask = 0xFF;
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m_AMask = 0xFF;
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break;
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case IMAGE_FORMAT_RGBA16161616:
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#if defined( _X360 )
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case IMAGE_FORMAT_LINEAR_RGBA16161616:
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#endif
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m_Size = 8;
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if ( !IsX360() )
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{
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m_RShift = 0;
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m_GShift = 16;
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m_BShift = 32;
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m_AShift = 48;
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}
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else
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{
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m_RShift = 48;
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m_GShift = 32;
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m_BShift = 16;
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m_AShift = 0;
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}
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m_RMask = 0xFFFF;
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m_GMask = 0xFFFF;
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m_BMask = 0xFFFF;
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m_AMask = 0xFFFF;
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break;
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case IMAGE_FORMAT_I8:
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// whatever goes into R is considered the intensity.
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m_Size = 1;
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m_RShift = 0;
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m_GShift = 0;
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m_BShift = 0;
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m_AShift = 0;
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m_RMask = 0xFF;
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m_GMask = 0x00;
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m_BMask = 0x00;
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m_AMask = 0x00;
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break;
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case IMAGE_FORMAT_RGB888:
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m_Size = 3;
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m_RShift = 0;
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m_GShift = 8;
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m_BShift = 16;
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m_AShift = 0;
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m_RMask = 0xFF;
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m_GMask = 0xFF;
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m_BMask = 0xFF;
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m_AMask = 0x0;
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break;
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// FIXME: Add more color formats as need arises
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default:
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{
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static bool format_error_printed[NUM_IMAGE_FORMATS];
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if ( !format_error_printed[format] )
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{
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Assert( 0 );
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Msg( "CPixelWriter::SetPixelMemory: Unsupported image format %i\n", format );
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format_error_printed[format] = true;
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}
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m_Size = 0; // set to zero so that we don't stomp memory for formats that we don't understand.
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m_RShift = 0;
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m_GShift = 0;
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m_BShift = 0;
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m_AShift = 0;
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m_RMask = 0x00;
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m_GMask = 0x00;
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m_BMask = 0x00;
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m_AMask = 0x00;
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}
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break;
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}
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}
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#if 0 // defined( _X360 )
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FORCEINLINE void CPixelWriter::ActivateByteSwapping( bool bSwap )
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{
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// X360TBD: Who is trying to use this?
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// Purposely not hooked up because PixelWriter has been ported to read/write native pixels only
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Assert( 0 );
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if ( bSwap && !(m_nFlags & PIXELWRITER_SWAPBYTES ) )
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{
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m_nFlags |= PIXELWRITER_SWAPBYTES;
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// only tested with 4 byte formats
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Assert( m_Size == 4 );
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}
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else if ( !bSwap && (m_nFlags & PIXELWRITER_SWAPBYTES ) )
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{
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m_nFlags &= ~PIXELWRITER_SWAPBYTES;
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}
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else
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{
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// same state
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return;
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}
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// swap the shifts
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m_RShift = 24-m_RShift;
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m_GShift = 24-m_GShift;
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m_BShift = 24-m_BShift;
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m_AShift = 24-m_AShift;
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}
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#endif
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//-----------------------------------------------------------------------------
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// Sets where we're writing to
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void CPixelWriter::Seek( int x, int y ) RESTRICT
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{
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m_pBits = m_pBase + y * m_BytesPerRow + x * m_Size;
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}
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//-----------------------------------------------------------------------------
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// Skips n bytes:
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void* CPixelWriter::SkipBytes( int n ) RESTRICT
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{
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m_pBits += n;
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return m_pBits;
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}
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//-----------------------------------------------------------------------------
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// Skips n pixels:
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void CPixelWriter::SkipPixels( int n )
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{
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SkipBytes( n * m_Size );
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}
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//-----------------------------------------------------------------------------
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// Writes a pixel without advancing the index PC ONLY
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void CPixelWriter::WritePixelNoAdvanceF( float r, float g, float b, float a ) RESTRICT
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{
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Assert( IsUsingFloatFormat() );
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// X360TBD: Not ported
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Assert( IsPC() );
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if (PIXELWRITER_USING_16BIT_FLOAT_FORMAT & m_nFlags)
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{
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float16 fp16[4];
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fp16[0].SetFloat( r );
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fp16[1].SetFloat( g );
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fp16[2].SetFloat( b );
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fp16[3].SetFloat( a );
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// fp16
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unsigned short pBuf[4] = { 0, 0, 0, 0 };
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pBuf[ m_RShift >> 4 ] |= (fp16[0].GetBits() & m_RMask) << ( m_RShift & 0xF );
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pBuf[ m_GShift >> 4 ] |= (fp16[1].GetBits() & m_GMask) << ( m_GShift & 0xF );
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pBuf[ m_BShift >> 4 ] |= (fp16[2].GetBits() & m_BMask) << ( m_BShift & 0xF );
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pBuf[ m_AShift >> 4 ] |= (fp16[3].GetBits() & m_AMask) << ( m_AShift & 0xF );
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memcpy( m_pBits, pBuf, m_Size );
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}
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else
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{
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// fp32
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int pBuf[4] = { 0, 0, 0, 0 };
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pBuf[ m_RShift >> 5 ] |= (FloatBits(r) & m_RMask) << ( m_RShift & 0x1F );
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pBuf[ m_GShift >> 5 ] |= (FloatBits(g) & m_GMask) << ( m_GShift & 0x1F );
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pBuf[ m_BShift >> 5 ] |= (FloatBits(b) & m_BMask) << ( m_BShift & 0x1F );
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pBuf[ m_AShift >> 5 ] |= (FloatBits(a) & m_AMask) << ( m_AShift & 0x1F );
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memcpy( m_pBits, pBuf, m_Size );
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}
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}
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//-----------------------------------------------------------------------------
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// Writes a pixel, advances the write index
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void CPixelWriter::WritePixelF( float r, float g, float b, float a )
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{
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WritePixelNoAdvanceF(r, g, b, a);
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m_pBits += m_Size;
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}
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//-----------------------------------------------------------------------------
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// Writes a pixel, advances the write index
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void CPixelWriter::WritePixel( int r, int g, int b, int a )
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{
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WritePixelNoAdvance(r,g,b,a);
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m_pBits += m_Size;
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}
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//-----------------------------------------------------------------------------
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// Writes a pixel, advances the write index
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void CPixelWriter::WritePixelSigned( int r, int g, int b, int a )
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{
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WritePixelNoAdvanceSigned(r,g,b,a);
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m_pBits += m_Size;
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}
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//-----------------------------------------------------------------------------
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// Writes a pixel without advancing the index
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//-----------------------------------------------------------------------------
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FORCEINLINE_PIXEL void CPixelWriter::WritePixelNoAdvance( int r, int g, int b, int a ) RESTRICT
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{
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Assert( !IsUsingFloatFormat() );
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if ( m_Size <= 0 )
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{
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return;
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}
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if ( m_Size < 5 )
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{
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unsigned int val = (r & m_RMask) << m_RShift;
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val |= (g & m_GMask) << m_GShift;
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val |= (m_BShift > 0) ? ((b & m_BMask) << m_BShift) : ((b & m_BMask) >> -m_BShift);
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val |= (a & m_AMask) << m_AShift;
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switch( m_Size )
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{
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default:
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Assert( 0 );
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return;
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case 1:
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{
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m_pBits[0] = (unsigned char)((val & 0xff));
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return;
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}
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case 2:
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{
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((unsigned short *)m_pBits)[0] = (unsigned short)((val & 0xffff));
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return;
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}
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case 3:
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{
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if ( IsPC() || !IsX360() )
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{
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|
((unsigned char *)m_pBits)[0] = (unsigned char)((val & 0xffff));
|
|
m_pBits[2] = (unsigned char)((val >> 16) & 0xff);
|
|
}
|
|
else
|
|
{
|
|
m_pBits[0] = (unsigned char)(((val >> 16) & 0xff));
|
|
m_pBits[1] = (unsigned char)(((val >> 8 ) & 0xff));
|
|
m_pBits[2] = (unsigned char)(val & 0xff);
|
|
}
|
|
return;
|
|
}
|
|
case 4:
|
|
{
|
|
((unsigned int *)m_pBits)[0] = val;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
else // RGBA32323232 or RGBA16161616 -- PC only.
|
|
{
|
|
AssertMsg(!IsX360(), "Unsupported lightmap format used in WritePixelNoAdvance(). This is a severe performance fault.\n");
|
|
|
|
int64 val = ( ( int64 )(r & m_RMask) ) << m_RShift;
|
|
val |= ( ( int64 )(g & m_GMask) ) << m_GShift;
|
|
val |= (m_BShift > 0) ? ((( int64 )( b & m_BMask)) << m_BShift) : (((int64)( b & m_BMask)) >> -m_BShift);
|
|
val |= ( ( int64 )(a & m_AMask) ) << m_AShift;
|
|
|
|
switch( m_Size )
|
|
{
|
|
case 6:
|
|
{
|
|
if ( IsPC() || !IsX360() )
|
|
{
|
|
((unsigned int *)m_pBits)[0] = val & 0xffffffff;
|
|
((unsigned short *)m_pBits)[2] = (unsigned short)( ( val >> 32 ) & 0xffff );
|
|
}
|
|
else
|
|
{
|
|
((unsigned int *)m_pBits)[0] = (val >> 16) & 0xffffffff;
|
|
((unsigned short *)m_pBits)[2] = (unsigned short)( val & 0xffff );
|
|
}
|
|
return;
|
|
}
|
|
case 8:
|
|
{
|
|
if ( IsPC() || !IsX360() )
|
|
{
|
|
((unsigned int *)m_pBits)[0] = val & 0xffffffff;
|
|
((unsigned int *)m_pBits)[1] = ( val >> 32 ) & 0xffffffff;
|
|
}
|
|
else
|
|
{
|
|
((unsigned int *)m_pBits)[0] = ( val >> 32 ) & 0xffffffff;
|
|
((unsigned int *)m_pBits)[1] = val & 0xffffffff;
|
|
}
|
|
return;
|
|
}
|
|
default:
|
|
Assert( 0 );
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef _X360
|
|
// There isn't a PC port of these because of the many varied
|
|
// pixel formats the PC deals with. If you write SSE versions
|
|
// of all the various necessary packers, then this can be made
|
|
// to work on PC.
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Writes a pixel, advances the write index
|
|
//-----------------------------------------------------------------------------
|
|
FORCEINLINE_PIXEL void CPixelWriter::WritePixel( FLTX4 rgba ) RESTRICT
|
|
{
|
|
WritePixelNoAdvance(rgba);
|
|
m_pBits += m_Size;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Writes a pixel without advancing the index
|
|
// rgba are four float values, each on the range 0..255 (though they may leak
|
|
// fractionally over 255 due to numerical errors earlier)
|
|
//-----------------------------------------------------------------------------
|
|
FORCEINLINE_PIXEL void CPixelWriter::WritePixelNoAdvance( FLTX4 rgba ) RESTRICT
|
|
{
|
|
Assert( !IsUsingFloatFormat() );
|
|
|
|
switch (m_Size)
|
|
{
|
|
case 0:
|
|
return;
|
|
case 4:
|
|
{
|
|
AssertMsg((reinterpret_cast<unsigned int>(m_pBits) & 0x03) == 0,"Unaligned m_pBits in WritePixelNoAdvance!");
|
|
switch ( m_Format )
|
|
{
|
|
// note: format names are low-order-byte first.
|
|
case IMAGE_FORMAT_RGBA8888:
|
|
case IMAGE_FORMAT_LINEAR_RGBA8888:
|
|
WritePixelNoAdvance_RGBA8888(rgba);
|
|
break;
|
|
|
|
case IMAGE_FORMAT_BGRA8888: // NOTE! : the low order bits are first in this naming convention.
|
|
case IMAGE_FORMAT_LINEAR_BGRA8888:
|
|
WritePixelNoAdvance_BGRA8888(rgba);
|
|
break;
|
|
|
|
|
|
default:
|
|
AssertMsg1(false, "Unknown four-byte pixel format %d in lightmap write.\n", m_Format);
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
AssertMsg1(false, "WritePixelNoAdvance on unsupported 360 %d-byte format\n", m_Size);
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
// here are some explicit formats so we can avoid the switch:
|
|
FORCEINLINE void CPixelWriter::WritePixelNoAdvance_RGBA8888( FLTX4 rgba )
|
|
{
|
|
// it's easier to do tiered convert-saturates here
|
|
// than the d3d color convertor op
|
|
|
|
// first permute
|
|
const static fltx4 permReverse = XMVectorPermuteControl(3,2,1,0);
|
|
fltx4 N = XMVectorPermute(rgba, rgba, permReverse);
|
|
|
|
N = __vctuxs(N, 0); // convert to unsigned fixed point 0 w/ saturate
|
|
N = __vpkuwus(N, N); // convert to halfword saturate
|
|
N = __vpkuhus(N, N); // convert to byte saturate
|
|
N = __vspltw(N, 0); // splat w-word to all four
|
|
|
|
__stvewx(N, m_pBits, 0); // store whatever word happens to be aligned with m_pBits to that word
|
|
}
|
|
|
|
FORCEINLINE void CPixelWriter::WritePixelNoAdvance_BGRA8888( FLTX4 rgba )
|
|
{
|
|
WritePixelNoAdvance_BGRA8888( rgba, m_pBits );
|
|
}
|
|
|
|
FORCEINLINE void CPixelWriter::WritePixelNoAdvance_BGRA8888( FLTX4 rgba, void * RESTRICT pBits ) RESTRICT
|
|
{
|
|
// this happens to be in an order such that we can use the handy builtin packing op
|
|
// clamp to 0..255 (coz it might have leaked over)
|
|
static const fltx4 vTwoFiftyFive = {255.0f, 255.0f, 255.0f, 255.0f};
|
|
fltx4 N = MinSIMD(vTwoFiftyFive, rgba);
|
|
|
|
// the magic number such that when mul-accummulated against rbga,
|
|
// gets us a representation 3.0 + (r)*2^-22 -- puts the bits at
|
|
// the bottom of the float
|
|
static CONST XMVECTOR PackScale = { (1.0f / (FLOAT)(1 << 22)), (1.0f / (FLOAT)(1 << 22)), (1.0f / (FLOAT)(1 << 22)), (1.0f / (FLOAT)(1 << 22))}; // 255.0f / (FLOAT)(1 << 22)
|
|
static const XMVECTOR Three = {3.0f, 3.0f, 3.0f, 3.0f};
|
|
|
|
N = __vmaddfp(N, PackScale, Three);
|
|
N = __vpkd3d(N, N, VPACK_D3DCOLOR, VPACK_32, 3); // pack to X word
|
|
N = __vspltw(N, 0); // splat X
|
|
|
|
// this is a nasty thing to work around the April XDK bug in __stvewx
|
|
{
|
|
void * RESTRICT copyOfPBits = pBits;
|
|
__stvewx(N, copyOfPBits, 0);
|
|
}
|
|
|
|
}
|
|
|
|
// for writing entire SIMD registers at once
|
|
FORCEINLINE void CPixelWriter::WriteFourPixelsExplicitLocation_BGRA8888 ( FLTX4 rgba, int offset )
|
|
{
|
|
Assert( (reinterpret_cast<unsigned int>(m_pBits) & 15) == 0 ); // assert alignment
|
|
XMStoreVector4A( m_pBits + offset , rgba );
|
|
}
|
|
|
|
|
|
#endif
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Writes a signed pixel without advancing the index
|
|
//-----------------------------------------------------------------------------
|
|
|
|
FORCEINLINE_PIXEL void CPixelWriter::WritePixelNoAdvanceSigned( int r, int g, int b, int a )
|
|
{
|
|
Assert( !IsUsingFloatFormat() );
|
|
|
|
if ( m_Size <= 0 )
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ( m_Size < 5 )
|
|
{
|
|
int val = (r & m_RMask) << m_RShift;
|
|
val |= (g & m_GMask) << m_GShift;
|
|
val |= (m_BShift > 0) ? ((b & m_BMask) << m_BShift) : ((b & m_BMask) >> -m_BShift);
|
|
val |= (a & m_AMask) << m_AShift;
|
|
signed char *pSignedBits = (signed char *)m_pBits;
|
|
|
|
if ( IsPC() || !IsX360() )
|
|
{
|
|
switch ( m_Size )
|
|
{
|
|
case 4:
|
|
pSignedBits[3] = (signed char)((val >> 24) & 0xff);
|
|
// fall through intentionally.
|
|
case 3:
|
|
pSignedBits[2] = (signed char)((val >> 16) & 0xff);
|
|
// fall through intentionally.
|
|
case 2:
|
|
pSignedBits[1] = (signed char)((val >> 8) & 0xff);
|
|
// fall through intentionally.
|
|
case 1:
|
|
pSignedBits[0] = (signed char)((val & 0xff));
|
|
// fall through intentionally.
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch ( m_Size )
|
|
{
|
|
case 4:
|
|
pSignedBits[0] = (signed char)((val >> 24) & 0xff);
|
|
pSignedBits[1] = (signed char)((val >> 16) & 0xff);
|
|
pSignedBits[2] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[3] = (signed char)(val & 0xff);
|
|
break;
|
|
case 3:
|
|
pSignedBits[0] = (signed char)((val >> 16) & 0xff);
|
|
pSignedBits[1] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[2] = (signed char)(val & 0xff);
|
|
break;
|
|
case 2:
|
|
pSignedBits[0] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[1] = (signed char)(val & 0xff);
|
|
break;
|
|
case 1:
|
|
pSignedBits[0] = (signed char)(val & 0xff);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int64 val = ( ( int64 )(r & m_RMask) ) << m_RShift;
|
|
val |= ( ( int64 )(g & m_GMask) ) << m_GShift;
|
|
val |= (m_BShift > 0) ? ((( int64 )( b & m_BMask)) << m_BShift) : (((int64)( b & m_BMask)) >> -m_BShift);
|
|
val |= ( ( int64 )(a & m_AMask) ) << m_AShift;
|
|
signed char *pSignedBits = ( signed char * )m_pBits;
|
|
|
|
if ( IsPC() || !IsX360() )
|
|
{
|
|
switch( m_Size )
|
|
{
|
|
case 8:
|
|
pSignedBits[7] = (signed char)((val >> 56) & 0xff);
|
|
pSignedBits[6] = (signed char)((val >> 48) & 0xff);
|
|
// fall through intentionally.
|
|
case 6:
|
|
pSignedBits[5] = (signed char)((val >> 40) & 0xff);
|
|
pSignedBits[4] = (signed char)((val >> 32) & 0xff);
|
|
// fall through intentionally.
|
|
case 4:
|
|
pSignedBits[3] = (signed char)((val >> 24) & 0xff);
|
|
// fall through intentionally.
|
|
case 3:
|
|
pSignedBits[2] = (signed char)((val >> 16) & 0xff);
|
|
// fall through intentionally.
|
|
case 2:
|
|
pSignedBits[1] = (signed char)((val >> 8) & 0xff);
|
|
// fall through intentionally.
|
|
case 1:
|
|
pSignedBits[0] = (signed char)((val & 0xff));
|
|
break;
|
|
default:
|
|
Assert( 0 );
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch( m_Size )
|
|
{
|
|
case 8:
|
|
pSignedBits[0] = (signed char)((val >> 56) & 0xff);
|
|
pSignedBits[1] = (signed char)((val >> 48) & 0xff);
|
|
pSignedBits[2] = (signed char)((val >> 40) & 0xff);
|
|
pSignedBits[3] = (signed char)((val >> 32) & 0xff);
|
|
pSignedBits[4] = (signed char)((val >> 24) & 0xff);
|
|
pSignedBits[5] = (signed char)((val >> 16) & 0xff);
|
|
pSignedBits[6] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[7] = (signed char)(val & 0xff);
|
|
break;
|
|
case 6:
|
|
pSignedBits[0] = (signed char)((val >> 40) & 0xff);
|
|
pSignedBits[1] = (signed char)((val >> 32) & 0xff);
|
|
pSignedBits[2] = (signed char)((val >> 24) & 0xff);
|
|
pSignedBits[3] = (signed char)((val >> 16) & 0xff);
|
|
pSignedBits[4] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[5] = (signed char)(val & 0xff);
|
|
break;
|
|
case 4:
|
|
pSignedBits[0] = (signed char)((val >> 24) & 0xff);
|
|
pSignedBits[1] = (signed char)((val >> 16) & 0xff);
|
|
pSignedBits[2] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[3] = (signed char)(val & 0xff);
|
|
break;
|
|
case 3:
|
|
pSignedBits[0] = (signed char)((val >> 16) & 0xff);
|
|
pSignedBits[1] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[2] = (signed char)(val & 0xff);
|
|
break;
|
|
case 2:
|
|
pSignedBits[0] = (signed char)((val >> 8) & 0xff);
|
|
pSignedBits[1] = (signed char)(val & 0xff);
|
|
break;
|
|
case 1:
|
|
pSignedBits[0] = (signed char)(val & 0xff);
|
|
break;
|
|
default:
|
|
Assert( 0 );
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
FORCEINLINE_PIXEL void CPixelWriter::ReadPixelNoAdvance( int &r, int &g, int &b, int &a )
|
|
{
|
|
Assert( !IsUsingFloatFormat() );
|
|
|
|
int val = m_pBits[0];
|
|
if ( m_Size > 1 )
|
|
{
|
|
if ( IsPC() || !IsX360() )
|
|
{
|
|
val |= (int)m_pBits[1] << 8;
|
|
if ( m_Size > 2 )
|
|
{
|
|
val |= (int)m_pBits[2] << 16;
|
|
if ( m_Size > 3 )
|
|
{
|
|
val |= (int)m_pBits[3] << 24;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
val <<= 8;
|
|
val |= (int)m_pBits[1];
|
|
if ( m_Size > 2 )
|
|
{
|
|
val <<= 8;
|
|
val |= (int)m_pBits[2];
|
|
if ( m_Size > 3 )
|
|
{
|
|
val <<= 8;
|
|
val |= (int)m_pBits[3];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
r = (val>>m_RShift) & m_RMask;
|
|
g = (val>>m_GShift) & m_GMask;
|
|
b = (val>>m_BShift) & m_BMask;
|
|
a = (val>>m_AShift) & m_AMask;
|
|
}
|
|
|
|
#endif // PIXELWRITER_H;
|