135 lines
3.4 KiB
C++
135 lines
3.4 KiB
C++
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Copyright (C) Microsoft Corporation, 2000.
|
||
|
|
//
|
||
|
|
// PixRef.cpp
|
||
|
|
//
|
||
|
|
// Direct3D Reference Device - Pixel Buffer Referencing
|
||
|
|
//
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
#include "pch.cpp"
|
||
|
|
#pragma hdrstop
|
||
|
|
|
||
|
|
extern int g_DXTBlkSize[];
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// PixelAddress - Form character address of locations within buffers using base
|
||
|
|
// pointer, pitch and type.
|
||
|
|
//
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
//
|
||
|
|
// common internal version
|
||
|
|
//
|
||
|
|
char*
|
||
|
|
PixelAddress(
|
||
|
|
int iX, int iY, int iZ, int iSample,
|
||
|
|
BYTE* pBits, int iYPitch, int iZPitch, int cSamples, RDSurfaceFormat SType )
|
||
|
|
{
|
||
|
|
// initialize return value to start of scan line (pitch is always in bytes)
|
||
|
|
BYTE* pPixAddr = pBits + iY*iYPitch + iZ*iZPitch;
|
||
|
|
|
||
|
|
// bump along scan line depending on surface type to point to pixel data
|
||
|
|
switch ( SType )
|
||
|
|
{
|
||
|
|
default:
|
||
|
|
_ASSERTf(0, ("Unknown RDSurfaceFormat value %08x", SType));
|
||
|
|
return NULL;
|
||
|
|
case RD_SF_NULL:
|
||
|
|
break;
|
||
|
|
|
||
|
|
case RD_SF_B8G8R8A8:
|
||
|
|
case RD_SF_B8G8R8X8:
|
||
|
|
case RD_SF_U8V8L8X8:
|
||
|
|
case RD_SF_Z24S8:
|
||
|
|
case RD_SF_Z24X8:
|
||
|
|
case RD_SF_S8Z24:
|
||
|
|
case RD_SF_X8Z24:
|
||
|
|
case RD_SF_Z24X4S4:
|
||
|
|
case RD_SF_X4S4Z24:
|
||
|
|
case RD_SF_Z32S0:
|
||
|
|
case RD_SF_U8V8W8Q8:
|
||
|
|
case RD_SF_U10V11W11:
|
||
|
|
case RD_SF_U16V16:
|
||
|
|
case RD_SF_R10G10B10A2:
|
||
|
|
case RD_SF_R8G8B8A8:
|
||
|
|
case RD_SF_R8G8B8X8:
|
||
|
|
case RD_SF_R16G16:
|
||
|
|
case RD_SF_U11V11W10:
|
||
|
|
case RD_SF_U10V10W10A2:
|
||
|
|
case RD_SF_U8V8X8A8:
|
||
|
|
case RD_SF_U8V8X8L8:
|
||
|
|
pPixAddr += (iX*cSamples*4 + iSample*4);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case RD_SF_B5G6R5:
|
||
|
|
case RD_SF_B5G5R5X1:
|
||
|
|
case RD_SF_B5G5R5A1:
|
||
|
|
case RD_SF_P8A8:
|
||
|
|
case RD_SF_L8A8:
|
||
|
|
case RD_SF_U8V8:
|
||
|
|
case RD_SF_U5V5L6:
|
||
|
|
case RD_SF_Z16S0:
|
||
|
|
case RD_SF_Z15S1:
|
||
|
|
case RD_SF_S1Z15:
|
||
|
|
case RD_SF_B4G4R4A4:
|
||
|
|
case RD_SF_B4G4R4X4:
|
||
|
|
case RD_SF_YUY2:
|
||
|
|
case RD_SF_UYVY:
|
||
|
|
case RD_SF_B2G3R3A8:
|
||
|
|
pPixAddr += (iX*cSamples*2 + iSample*2);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case RD_SF_B8G8R8:
|
||
|
|
pPixAddr += (iX*cSamples*3 + iSample*3);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case RD_SF_PALETTE8:
|
||
|
|
case RD_SF_L8:
|
||
|
|
case RD_SF_A8:
|
||
|
|
case RD_SF_B2G3R3:
|
||
|
|
case RD_SF_L4A4:
|
||
|
|
pPixAddr += (iX*cSamples*1 + iSample*1);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case RD_SF_PALETTE4:
|
||
|
|
pPixAddr += (iX>>1);
|
||
|
|
break;
|
||
|
|
|
||
|
|
// For the DXT texture formats, obtain the address of the
|
||
|
|
// block from whih to decompress the texel from
|
||
|
|
case RD_SF_DXT1:
|
||
|
|
case RD_SF_DXT2:
|
||
|
|
case RD_SF_DXT3:
|
||
|
|
case RD_SF_DXT4:
|
||
|
|
case RD_SF_DXT5:
|
||
|
|
pPixAddr = pBits + iZ*iZPitch + (iY >> 2)*iYPitch + (iX>>2) *
|
||
|
|
g_DXTBlkSize[(int)SType - (int)RD_SF_DXT1];
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return (char *)pPixAddr;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// external versions
|
||
|
|
//
|
||
|
|
char*
|
||
|
|
PixelAddress(
|
||
|
|
int iX, int iY, int iZ,
|
||
|
|
BYTE* pBits, int iYPitch, int iZPitch, RDSurfaceFormat SType )
|
||
|
|
{
|
||
|
|
return PixelAddress( iX, iY, iZ, 0, pBits, iYPitch, iZPitch, 1, SType );
|
||
|
|
}
|
||
|
|
|
||
|
|
char*
|
||
|
|
PixelAddress(
|
||
|
|
int iX, int iY, int iZ, int iSample, RDSurface2D* pRT )
|
||
|
|
{
|
||
|
|
return PixelAddress( iX, iY, iZ, iSample,
|
||
|
|
pRT->GetBits(), pRT->GetPitch(), 0 /* pRT->GetSlicePitch() */,
|
||
|
|
pRT->GetSamples(), pRT->GetSurfaceFormat() );
|
||
|
|
}
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
// end
|