154 lines
6.9 KiB
C++
154 lines
6.9 KiB
C++
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Copyright (C) Microsoft Corporation, 1998.
|
||
|
|
//
|
||
|
|
// MapLegcy.cpp
|
||
|
|
//
|
||
|
|
// Direct3D Reference Rasterizer - Mapping Legacy Modes to Current Functionality
|
||
|
|
//
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
#include "pch.cpp"
|
||
|
|
#pragma hdrstop
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// MapLegacyTextureFilter - Map filter state from renderstate to per-stage state.
|
||
|
|
// This is invoked when a texture is bound via the TEXTUREHANDLE renderstate,
|
||
|
|
// indicating that we are in 'legacy' texture mode. The rasterizer always
|
||
|
|
// refers to per-stage filtering control state, so in legacy mode the filtering
|
||
|
|
// controls in the renderstate are mapped into the filtering controls associated
|
||
|
|
// with the texture object bound to D3DRS_TEXTUREHANDLE.
|
||
|
|
//
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
void
|
||
|
|
RefDev::MapLegacyTextureFilter( void )
|
||
|
|
{
|
||
|
|
// first check if anisotropic filtering is enabled (indicated by the
|
||
|
|
// limit value being set to > 1) - if so then aniso filter will be used
|
||
|
|
// for linear mag filter or 'linear within map' min filter
|
||
|
|
BOOL bAnisoEnabled = ( m_dwRenderState[D3DRENDERSTATE_ANISOTROPY] > 1 );
|
||
|
|
|
||
|
|
// D3D legacy filter specifications are (XXXMIP)YYY where XXX is the
|
||
|
|
// mip filter and YYY is the filter used within an LOD
|
||
|
|
|
||
|
|
// map MAG filter - legacy support is point or linear (and maybe aniso)
|
||
|
|
switch ( m_dwRenderState[D3DRENDERSTATE_TEXTUREMAG] )
|
||
|
|
{
|
||
|
|
default:
|
||
|
|
case D3DFILTER_NEAREST:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MAGFILTER] = D3DTEXF_POINT;
|
||
|
|
break;
|
||
|
|
case D3DFILTER_LINEAR:
|
||
|
|
// select based on aniso enable
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MAGFILTER] =
|
||
|
|
bAnisoEnabled ? D3DTEXF_ANISOTROPIC : D3DTEXF_LINEAR;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
// map MIN and MIP filter at the same time - legacy support
|
||
|
|
// has them intermingled...
|
||
|
|
switch ( m_dwRenderState[D3DRENDERSTATE_TEXTUREMIN] )
|
||
|
|
{
|
||
|
|
case D3DFILTER_NEAREST:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MINFILTER] = D3DTEXF_POINT;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MIPFILTER] = D3DTEXF_NONE;
|
||
|
|
break;
|
||
|
|
case D3DFILTER_MIPNEAREST:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MINFILTER] = D3DTEXF_POINT;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MIPFILTER] = D3DTEXF_POINT;
|
||
|
|
break;
|
||
|
|
case D3DFILTER_LINEARMIPNEAREST:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MINFILTER] = D3DTEXF_POINT;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MIPFILTER] = D3DTEXF_LINEAR;
|
||
|
|
break;
|
||
|
|
case D3DFILTER_LINEAR:
|
||
|
|
// select min filter based on aniso enable
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MINFILTER] =
|
||
|
|
bAnisoEnabled ? D3DTEXF_ANISOTROPIC : D3DTEXF_LINEAR;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MIPFILTER] = D3DTEXF_NONE;
|
||
|
|
break;
|
||
|
|
case D3DFILTER_MIPLINEAR:
|
||
|
|
// select min filter based on aniso enable
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MINFILTER] =
|
||
|
|
bAnisoEnabled ? D3DTEXF_ANISOTROPIC : D3DTEXF_LINEAR;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MIPFILTER] = D3DTEXF_POINT;
|
||
|
|
break;
|
||
|
|
case D3DFILTER_LINEARMIPLINEAR:
|
||
|
|
// select based on aniso enable
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MINFILTER] =
|
||
|
|
bAnisoEnabled ? D3DTEXF_ANISOTROPIC : D3DTEXF_LINEAR;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_MIPFILTER] = D3DTEXF_LINEAR;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// MapLegacyTextureBlend - Maps legacy (pre-DX6) texture blend modes to DX6
|
||
|
|
// texture blending controls. Uses per-stage program mode (first stage only).
|
||
|
|
// This mapping is done whenever the legacy TBLEND renderstate is set, and
|
||
|
|
// does overwrite any previously set DX6 texture blending controls.
|
||
|
|
//
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
void
|
||
|
|
RefDev::MapLegacyTextureBlend( void )
|
||
|
|
{
|
||
|
|
// disable texture blend processing stage 1 (this also disables subsequent stages)
|
||
|
|
m_TextureStageState[1].m_dwVal[D3DTSS_COLOROP] = D3DTOP_DISABLE;
|
||
|
|
|
||
|
|
// set texture blend processing stage 0 to match legacy mode
|
||
|
|
switch ( m_dwRenderState[D3DRENDERSTATE_TEXTUREMAPBLEND] )
|
||
|
|
{
|
||
|
|
default:
|
||
|
|
case D3DTBLEND_DECALMASK: // unsupported - do decal
|
||
|
|
case D3DTBLEND_DECAL:
|
||
|
|
case D3DTBLEND_COPY:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLOROP] = D3DTOP_SELECTARG1;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAOP] = D3DTOP_SELECTARG1;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG1] = D3DTA_TEXTURE;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case D3DTBLEND_MODULATEMASK: // unsupported - do modulate
|
||
|
|
case D3DTBLEND_MODULATE:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLOROP] = D3DTOP_MODULATE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG2] = D3DTA_DIFFUSE;
|
||
|
|
// a special legacy alpha operation is called for that depends
|
||
|
|
// on the format of the texture
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAOP] = D3DTOP_LEGACY_ALPHAOVR;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG2] = D3DTA_DIFFUSE;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case D3DTBLEND_MODULATEALPHA:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLOROP] = D3DTOP_MODULATE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG2] = D3DTA_DIFFUSE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAOP] = D3DTOP_MODULATE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG2] = D3DTA_DIFFUSE;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case D3DTBLEND_DECALALPHA:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLOROP] = D3DTOP_BLENDTEXTUREALPHA;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG2] = D3DTA_DIFFUSE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAOP] = D3DTOP_SELECTARG2;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG2] = D3DTA_DIFFUSE;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case D3DTBLEND_ADD:
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLOROP] = D3DTOP_ADD;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_COLORARG2] = D3DTA_DIFFUSE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAOP] = D3DTOP_SELECTARG2;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG1] = D3DTA_TEXTURE;
|
||
|
|
m_TextureStageState[0].m_dwVal[D3DTSS_ALPHAARG2] = D3DTA_DIFFUSE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
// end
|